Dr. J. Mark Erickson has made significant contributions to the geological literature over his career. He has published over 60 papers in various journals, with topics ranging from gastropods and limulids to traces fossils, fish, and leaves. Many of his publications involved collaboration and co-authorship with students and other scholars. His work has been widely cited, with some papers receiving over 50 citations. Dr. Erickson has also advised over 60 student theses and co-authored numerous publications with his students. Overall, his research and mentorship have had a substantial influence on the fields of paleontology and geology.
This study examined the reproductive structures of Macrocystis pyrifera (giant kelp) found in a protected coastal site in New Zealand. It found that sporophylls, pneumatocyst-bearing blades, and apical scimitars all produced sori (reproductive tissue). Sporophylls had the largest sorus area but released the fewest spores. Apical scimitars released the most spores but sporophylls, blades, and scimitars all produced spores of equal viability. This reproductive plasticity across different frond parts may enhance reproductive output and dispersal, contributing to the next generation.
1) The document describes an experiment where an ice mixture simulating interstellar medium composition was ultraviolet irradiated at 12K and analyzed after warming.
2) 16 amino acids were detected in the residue, including some that are also found in meteorites. Chiral amino acids showed enantiomeric separation.
3) The results demonstrate that amino acids can be spontaneously generated in interstellar ice analogs upon ultraviolet irradiation, supporting the hypothesis that amino acids could have been delivered to Earth by comets or meteorites.
The Contributions of Dr. J. Mark Erickson to the Geological LiteratureBonnie Swoger
A scientist's record of scholarly publications serves as a lasting testament to their interests, commitments and passions. Dr J. Mark Erickson has over 45 scholarly publications demonstrating his longstanding commitment to undergraduate research, his exceptional scholarship, and his interest in the regional geology of both the North Country and North Dakota. Dr. Erickson's commitment to undergraduate research started long before it was fashionable, as seen by his first publications in The Compass, the journal of Sigma Gamma Epsilon. His bibliography includes publications in prestigious journals like Nature and the Journal of Paleontology, illustrating the high quality of his scholarship. Smaller organizations like the New York State Geological Association and the North Dakota Academy of Sciences also benefitted from his contributions. Dr. Erickson often chose to work with current and former students, co-authoring with them on many publications. In addition to Dr. Erickson's bibliography, his other vital contribution to the geological sciences is the group of scholars and students he taught and mentored during his time at St. Lawrence. Many of these students have gone on to have illustrious careers as geoscience scholars, thanks largely to the education they received from Dr. Erickson and St. Lawrence University.
Fossil records, comparative anatomy, and genetic information provide evidence for evolution by showing how species have changed over time. Fossils show how ancient species were different from modern species, while homologous and analogous structures in different species indicate common ancestry or adaptation to similar environments. Comparisons of DNA and protein sequences also reveal how closely related species are, supporting the idea that all life on Earth descended from common ancestors through the process of natural selection.
Origin of Life: by Chance or by Design?Tauqeer Ahmad
The document discusses the debate around whether life originated by chance or by design. It provides background on early theories from the 1930s proposing that life arose spontaneously through natural processes. It also summarizes key experiments, like Stanley Miller's 1953 experiment producing amino acids from simple gases. However, it notes that creating functional proteins randomly is overwhelmingly improbable. While some support for spontaneous abiogenesis came from early Mars missions, more recent data suggests the early Earth environment may not have been as reducing as previously believed. The document questions whether random reactions alone can explain the origin of life, given the huge amount of information stored in biological molecules, and suggests a super intelligence may be the best explanation.
The document discusses the origins and evolution of life on Earth from its earliest beginnings to present day. It describes early scientific theories on how life began, including spontaneous generation and biogenesis. Miller and Urey's experiment provided evidence that simple organic molecules could form from chemical reactions, and these molecules became the building blocks of cells. Fossil and geological evidence show that early life was prokaryotic and anaerobic, and evolved over billions of years from simple to more complex multicellular forms through natural selection and genetic changes within populations. The fossil record and comparative anatomy provide multiple lines of evidence that all life on Earth shares a common ancestor.
This study examined the reproductive structures of Macrocystis pyrifera (giant kelp) found in a protected coastal site in New Zealand. It found that sporophylls, pneumatocyst-bearing blades, and apical scimitars all produced sori (reproductive tissue). Sporophylls had the largest sorus area but released the fewest spores. Apical scimitars released the most spores but sporophylls, blades, and scimitars all produced spores of equal viability. This reproductive plasticity across different frond parts may enhance reproductive output and dispersal, contributing to the next generation.
1) The document describes an experiment where an ice mixture simulating interstellar medium composition was ultraviolet irradiated at 12K and analyzed after warming.
2) 16 amino acids were detected in the residue, including some that are also found in meteorites. Chiral amino acids showed enantiomeric separation.
3) The results demonstrate that amino acids can be spontaneously generated in interstellar ice analogs upon ultraviolet irradiation, supporting the hypothesis that amino acids could have been delivered to Earth by comets or meteorites.
The Contributions of Dr. J. Mark Erickson to the Geological LiteratureBonnie Swoger
A scientist's record of scholarly publications serves as a lasting testament to their interests, commitments and passions. Dr J. Mark Erickson has over 45 scholarly publications demonstrating his longstanding commitment to undergraduate research, his exceptional scholarship, and his interest in the regional geology of both the North Country and North Dakota. Dr. Erickson's commitment to undergraduate research started long before it was fashionable, as seen by his first publications in The Compass, the journal of Sigma Gamma Epsilon. His bibliography includes publications in prestigious journals like Nature and the Journal of Paleontology, illustrating the high quality of his scholarship. Smaller organizations like the New York State Geological Association and the North Dakota Academy of Sciences also benefitted from his contributions. Dr. Erickson often chose to work with current and former students, co-authoring with them on many publications. In addition to Dr. Erickson's bibliography, his other vital contribution to the geological sciences is the group of scholars and students he taught and mentored during his time at St. Lawrence. Many of these students have gone on to have illustrious careers as geoscience scholars, thanks largely to the education they received from Dr. Erickson and St. Lawrence University.
Fossil records, comparative anatomy, and genetic information provide evidence for evolution by showing how species have changed over time. Fossils show how ancient species were different from modern species, while homologous and analogous structures in different species indicate common ancestry or adaptation to similar environments. Comparisons of DNA and protein sequences also reveal how closely related species are, supporting the idea that all life on Earth descended from common ancestors through the process of natural selection.
Origin of Life: by Chance or by Design?Tauqeer Ahmad
The document discusses the debate around whether life originated by chance or by design. It provides background on early theories from the 1930s proposing that life arose spontaneously through natural processes. It also summarizes key experiments, like Stanley Miller's 1953 experiment producing amino acids from simple gases. However, it notes that creating functional proteins randomly is overwhelmingly improbable. While some support for spontaneous abiogenesis came from early Mars missions, more recent data suggests the early Earth environment may not have been as reducing as previously believed. The document questions whether random reactions alone can explain the origin of life, given the huge amount of information stored in biological molecules, and suggests a super intelligence may be the best explanation.
The document discusses the origins and evolution of life on Earth from its earliest beginnings to present day. It describes early scientific theories on how life began, including spontaneous generation and biogenesis. Miller and Urey's experiment provided evidence that simple organic molecules could form from chemical reactions, and these molecules became the building blocks of cells. Fossil and geological evidence show that early life was prokaryotic and anaerobic, and evolved over billions of years from simple to more complex multicellular forms through natural selection and genetic changes within populations. The fossil record and comparative anatomy provide multiple lines of evidence that all life on Earth shares a common ancestor.
Studying the history of life on Earth provides important insights into how life has evolved over billions of years (1). Examining fossils and other evidence allows us to understand how early organisms developed and how more complex life forms like plants and animals emerged (2). Understanding the evolutionary relationships between different species helps explain how we are all related and dependent on one another (3).
Discusses the Cycle of Air, the three squares from the Step Diagram that apply to Air—Invertebrates, Vertebrates, Man. The Evolutionary Timeline. Extinction Events. Darwin’s Theory. Ecosystem Roles. Nature’s Eccentricity and Conundrums. Evolution by Ecosystem. Emotions and the Body Kesdjan
The document discusses the history of life on Earth from its origins to early multicellular life. It describes early scientific theories on the beginning of life and experiments providing evidence against spontaneous generation. Modern scientists believe life began through natural chemical reactions forming organic molecules, as supported by the Miller-Urey experiment. Early life was prokaryotic and anaerobic, with eukaryotes and complex cells developing later through endosymbiosis. Fossils provide evidence of the progression and environments of early life. Radiometric dating allows determining the absolute ages of fossils.
Astrobiology Comic (Issue 1)για παιδιά Γυμνασίου.pdfΜαυρουδης Μακης
This document provides a summary of the history of exobiology and astrobiology at NASA. It discusses how the fields have evolved over the past 50 years from early speculation about life on other planets to the establishment of NASA's Exobiology program in 1960 and the expanded Astrobiology Program in the 1990s. The summary also highlights some of the key figures and experiments that helped shape our understanding of the potential for life elsewhere, such as the Miller-Urey experiment which demonstrated how organic molecules could form in conditions similar to the early Earth.
Astronomy - State of the Art - Life in the UniverseChris Impey
Astronomy - State of the Art is a course covering the hottest topics in astronomy. In this section, the potential for life in the universe is covered, including extreme life on Earth, the Drake equation and SETI
The document describes the synthesis and characterization of a manganese catalyst with the ligand BPMP (bis(2-pyridylmethyl)piperazine) for alcohol oxidation reactions. The BPMP ligand was synthesized according to a published procedure and then reacted with manganese(II) triflate to form the complex [Mn(BPMP)(OTf)2]. X-ray crystallography showed the manganese atom had a distorted trigonal prismatic coordination geometry. Testing showed the heterogeneous catalyst could efficiently oxidize various benzylic alcohols and cinnamyl alcohol to the corresponding aldehydes without over-oxidation.
This document discusses the origin and evolution of the white shark (Carcharodon carcharias) based on new fossil evidence from the Pisco Formation in Peru. The authors provide three key points:
1. New fossil specimens from the Pisco Formation show an evolutionary transition between the broad-toothed shark Carcharodon (Cosmopolitodus) hastalis and C. carcharias, supporting the hypothesis that C. carcharias evolved from C. hastalis. A new species, C. hubbelli, is described that demonstrates traits of both species.
2. Recalibration of the Pisco Formation using zircon dating and strontium isotope analysis suggests that
All good things come in threes - species delimitation through shape analysis ...Liz Adams
The authors noticed errors in previously published otolith area values from a study on species delimitation through shape analysis of saccular, lagenar, and utricular otoliths in four Poecilia species. The errors were a factor of 1000, but do not affect the analyses, results, or conclusions of the study. Corrected tables of otolith area values for the four Poecilia species are provided.
A paleontologist is studying the history of group of stratigraphic fo.pdfdhavalbl38
A paleontologist is studying the history of group of stratigraphic fossils the arthropods. Use the
diagram below to answer the questions. The pictures of the organisms represent of two different
species that your research team has assigned to the various stratigraphic layers. Which of the
fossils has been assigned to the wrong layer? The paleontologist\'s graduate student was unsure
which rock layer was the most in important to date so she dated all of them with the results as
follows: A: 100 mya, B: 50 mya, C: 10 mya, D: 300 mya When did species 1 go extinct? When
did species 2 go extinct? If found a non-fossilized organic sample in the soil above the rock
layers, how might my approach to determining its age be different than for the fossilized
remains?
Solution
a) Species in the igneous rock has been assigned to the wrong layer.
Because, Igneous rocks do not contain fossils as they form from the molten rocks. These rocks
form when the molten rocks become cools and eventually solidify.
Instead of this, fossils are generally found in sedimentary rocks which is formed in layers by the
depositing and pressing of sediments on top of each other.
b) i) species 1 went extinct after 100 million years.
ii) Species 2 went extinct after 50 million years.
c) If I found a non-fossilized organic sample in the soil above the rock layers then I can use
carbon dating or radiometric dating. It is the process of determining the percentage of the
radioactive isotope in the sample and using the half life data to ultimately determine the age of
the sample.
Basic data of radiocarbon dating-
Carbon 14 is an isotope of carbon which is naturally formed in the atmosphere. All plants and
animals when they are alive, have regular intake carbon. When an animal or plant dies it no
longer takes in carbon of any form. That plant or animal most often decays and its constituent
parts break down and are eaten by scavengers, or they decay, or are washed away etc. Instead of
these events if the animal or plant is encased in some sediment, or frozen, or desiccated, or
otherwise preserved quickly so that its structure and constituent parts are preserved. Scientists
have ways of counting the carbon 14 atoms in a sample and then they find out the total number
of carbon atoms and figure out how old the material is.
In this way fairly new organic material’s age is also determined..
The document provides an overview of the field of astrobiology, including its history and goals. It discusses the search for life on Mars, Europa and beyond Earth. The goals of astrobiology include understanding the origin and distribution of life, characterizing habitable environments in the solar system and beyond, and determining how life emerges and evolves in different environments. Both long term goals like searching for life on other worlds and short term goals like Mars exploration are mentioned.
Understanding biology from natural history: Lake Tana and its fishesLeo Nagelkerke
The document discusses the role of natural history in understanding speciation and evolution, using the example of fish species in Lake Tana, Ethiopia. It describes how earlier experts incorrectly identified the fish diversity, but later analysis by Nagelkerke and Sibbing identified 15 distinct Labeobarbus species. The main questions examined are the status and origin of the current diversity, the processes that shaped it, and the minimum knowledge needed for sustainable exploitation. The document emphasizes that evolutionary biology relies on constructing historical narratives to explain unique phenomena, and that perfect knowledge is not required for conservation if the right knowledge is identified.
The document discusses Earth's four subsystems which include the lithosphere, hydrosphere, biosphere, and atmosphere. It describes how minerals have definite chemical compositions and crystalline structures. The document also provides examples of activities that involve interactions between Earth's subsystems like volcanic eruptions which impact the geosphere and atmosphere.
The document discusses the geologic time scale and the emergence of early life on Earth. It summarizes that the geologic time scale is divided into eons such as the Phanerozoic and Proterozoic. Early theories estimated the age of the Earth, while radioactive dating methods later revealed the Earth to be billions of years old. Stromatolites are among the earliest fossils, dating back over 3 billion years ago, and provided evidence that life began on the early Earth.
This document summarizes key points in a debate between creationism and evolution. It discusses public opinion on teaching evolution in schools, the history of creationism and evolution theories, evidence from radioactive dating and astronomy that contradicts a young Earth, and how the geologic record supports evolution over a global flood. Creationist claims are addressed and rebutted using scientific evidence.
This document discusses the origin and evolution of life. It begins by defining key properties of organisms, such as being complex, made of cells, and able to perform vital functions. It then explores early theories on the origins of life, including spontaneous generation and the cell theory. The document discusses the primordial soup hypothesis and experiments by Oparin and Miller supporting organic molecule formation from early Earth conditions. Finally, it analyzes fixist and evolutionist theories on the diversity of organisms, including Lamarckism on adaptation and inheritance of acquired traits, and Darwinism on natural selection.
The fossil was found in location F. Using the law of superposition, the fossil is older than fossils found in locations A, C, and D, but younger than fossils in locations H and I. Volcanic ash layers near location F were dated to 5 million years old (B) and 24 million years old (E). Therefore, the fossil is between 5 and 24 million years old, dating it to the Miocene epoch. The exact age cannot be determined.
The document summarizes a study that examined differences in decomposition and insect activity on pig carrion placed in sunlit versus shaded locations during winter in Canberra, Australia. 8 pig carcasses were placed in cages either in full sun or full shade and observed over approximately 3 months. No significant difference was found in temperature or decomposition rate between sunlit and shaded carrion. However, the insect populations and species present did vary strongly, with more insects and larger populations observed on the sunlit carrion. Forensic entomology methods were used to analyze the insect data and determine estimates of the post mortem interval.
Rocks, fossils, and ice cores help us paint a picture of Earth's history through various methods. The law of superposition and index fossils found in sedimentary rock layers allow us to relatively and absolutely date the formations. Ice cores provide information about past climate conditions over thousands of years by examining factors like carbon dioxide levels, volcanic ash deposits, and tree ring widths that indicate precipitation levels during each year of growth. Together, these natural records allow scientists to reconstruct Earth's environmental history.
Here are a few tips to help manage your citations:
- Focus on quality over quantity. Make sure each citation directly supports your argument. Remove citations that are not essential.
- Consider grouping related citations together in a single paragraph to reduce clutter.
- Use citation management software like Zotero or Mendeley to organize your references as you write. This prevents duplication and makes formatting citations effortless.
- Consult your style guide for the proper way to cite sources when there are more than 3 authors. Many guides allow you to shorten citations after the first use.
- Check with your instructor on their preferences. Page limits may influence how many citations are appropriate. Focus on the most influential sources.
Man
Going Beyond Anecdotes: Assessing Student Learning During Reference TransactionsBonnie Swoger
By Bonnie Swoger and Kim Hoffman
At SUNY Geneseo, we wanted to know what students learned during reference transactions, beyond counts of reference questions or user satisfaction surveys. Building on library instruction assessment techniques, students answered a survey after each reference transaction that simply asked “What did you learn today from your meeting with the librarian?”
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Similar to The Contributions of Dr. J. Mark Erickson to the geological literature presentation
Studying the history of life on Earth provides important insights into how life has evolved over billions of years (1). Examining fossils and other evidence allows us to understand how early organisms developed and how more complex life forms like plants and animals emerged (2). Understanding the evolutionary relationships between different species helps explain how we are all related and dependent on one another (3).
Discusses the Cycle of Air, the three squares from the Step Diagram that apply to Air—Invertebrates, Vertebrates, Man. The Evolutionary Timeline. Extinction Events. Darwin’s Theory. Ecosystem Roles. Nature’s Eccentricity and Conundrums. Evolution by Ecosystem. Emotions and the Body Kesdjan
The document discusses the history of life on Earth from its origins to early multicellular life. It describes early scientific theories on the beginning of life and experiments providing evidence against spontaneous generation. Modern scientists believe life began through natural chemical reactions forming organic molecules, as supported by the Miller-Urey experiment. Early life was prokaryotic and anaerobic, with eukaryotes and complex cells developing later through endosymbiosis. Fossils provide evidence of the progression and environments of early life. Radiometric dating allows determining the absolute ages of fossils.
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This document provides a summary of the history of exobiology and astrobiology at NASA. It discusses how the fields have evolved over the past 50 years from early speculation about life on other planets to the establishment of NASA's Exobiology program in 1960 and the expanded Astrobiology Program in the 1990s. The summary also highlights some of the key figures and experiments that helped shape our understanding of the potential for life elsewhere, such as the Miller-Urey experiment which demonstrated how organic molecules could form in conditions similar to the early Earth.
Astronomy - State of the Art - Life in the UniverseChris Impey
Astronomy - State of the Art is a course covering the hottest topics in astronomy. In this section, the potential for life in the universe is covered, including extreme life on Earth, the Drake equation and SETI
The document describes the synthesis and characterization of a manganese catalyst with the ligand BPMP (bis(2-pyridylmethyl)piperazine) for alcohol oxidation reactions. The BPMP ligand was synthesized according to a published procedure and then reacted with manganese(II) triflate to form the complex [Mn(BPMP)(OTf)2]. X-ray crystallography showed the manganese atom had a distorted trigonal prismatic coordination geometry. Testing showed the heterogeneous catalyst could efficiently oxidize various benzylic alcohols and cinnamyl alcohol to the corresponding aldehydes without over-oxidation.
This document discusses the origin and evolution of the white shark (Carcharodon carcharias) based on new fossil evidence from the Pisco Formation in Peru. The authors provide three key points:
1. New fossil specimens from the Pisco Formation show an evolutionary transition between the broad-toothed shark Carcharodon (Cosmopolitodus) hastalis and C. carcharias, supporting the hypothesis that C. carcharias evolved from C. hastalis. A new species, C. hubbelli, is described that demonstrates traits of both species.
2. Recalibration of the Pisco Formation using zircon dating and strontium isotope analysis suggests that
All good things come in threes - species delimitation through shape analysis ...Liz Adams
The authors noticed errors in previously published otolith area values from a study on species delimitation through shape analysis of saccular, lagenar, and utricular otoliths in four Poecilia species. The errors were a factor of 1000, but do not affect the analyses, results, or conclusions of the study. Corrected tables of otolith area values for the four Poecilia species are provided.
A paleontologist is studying the history of group of stratigraphic fo.pdfdhavalbl38
A paleontologist is studying the history of group of stratigraphic fossils the arthropods. Use the
diagram below to answer the questions. The pictures of the organisms represent of two different
species that your research team has assigned to the various stratigraphic layers. Which of the
fossils has been assigned to the wrong layer? The paleontologist\'s graduate student was unsure
which rock layer was the most in important to date so she dated all of them with the results as
follows: A: 100 mya, B: 50 mya, C: 10 mya, D: 300 mya When did species 1 go extinct? When
did species 2 go extinct? If found a non-fossilized organic sample in the soil above the rock
layers, how might my approach to determining its age be different than for the fossilized
remains?
Solution
a) Species in the igneous rock has been assigned to the wrong layer.
Because, Igneous rocks do not contain fossils as they form from the molten rocks. These rocks
form when the molten rocks become cools and eventually solidify.
Instead of this, fossils are generally found in sedimentary rocks which is formed in layers by the
depositing and pressing of sediments on top of each other.
b) i) species 1 went extinct after 100 million years.
ii) Species 2 went extinct after 50 million years.
c) If I found a non-fossilized organic sample in the soil above the rock layers then I can use
carbon dating or radiometric dating. It is the process of determining the percentage of the
radioactive isotope in the sample and using the half life data to ultimately determine the age of
the sample.
Basic data of radiocarbon dating-
Carbon 14 is an isotope of carbon which is naturally formed in the atmosphere. All plants and
animals when they are alive, have regular intake carbon. When an animal or plant dies it no
longer takes in carbon of any form. That plant or animal most often decays and its constituent
parts break down and are eaten by scavengers, or they decay, or are washed away etc. Instead of
these events if the animal or plant is encased in some sediment, or frozen, or desiccated, or
otherwise preserved quickly so that its structure and constituent parts are preserved. Scientists
have ways of counting the carbon 14 atoms in a sample and then they find out the total number
of carbon atoms and figure out how old the material is.
In this way fairly new organic material’s age is also determined..
The document provides an overview of the field of astrobiology, including its history and goals. It discusses the search for life on Mars, Europa and beyond Earth. The goals of astrobiology include understanding the origin and distribution of life, characterizing habitable environments in the solar system and beyond, and determining how life emerges and evolves in different environments. Both long term goals like searching for life on other worlds and short term goals like Mars exploration are mentioned.
Understanding biology from natural history: Lake Tana and its fishesLeo Nagelkerke
The document discusses the role of natural history in understanding speciation and evolution, using the example of fish species in Lake Tana, Ethiopia. It describes how earlier experts incorrectly identified the fish diversity, but later analysis by Nagelkerke and Sibbing identified 15 distinct Labeobarbus species. The main questions examined are the status and origin of the current diversity, the processes that shaped it, and the minimum knowledge needed for sustainable exploitation. The document emphasizes that evolutionary biology relies on constructing historical narratives to explain unique phenomena, and that perfect knowledge is not required for conservation if the right knowledge is identified.
The document discusses Earth's four subsystems which include the lithosphere, hydrosphere, biosphere, and atmosphere. It describes how minerals have definite chemical compositions and crystalline structures. The document also provides examples of activities that involve interactions between Earth's subsystems like volcanic eruptions which impact the geosphere and atmosphere.
The document discusses the geologic time scale and the emergence of early life on Earth. It summarizes that the geologic time scale is divided into eons such as the Phanerozoic and Proterozoic. Early theories estimated the age of the Earth, while radioactive dating methods later revealed the Earth to be billions of years old. Stromatolites are among the earliest fossils, dating back over 3 billion years ago, and provided evidence that life began on the early Earth.
This document summarizes key points in a debate between creationism and evolution. It discusses public opinion on teaching evolution in schools, the history of creationism and evolution theories, evidence from radioactive dating and astronomy that contradicts a young Earth, and how the geologic record supports evolution over a global flood. Creationist claims are addressed and rebutted using scientific evidence.
This document discusses the origin and evolution of life. It begins by defining key properties of organisms, such as being complex, made of cells, and able to perform vital functions. It then explores early theories on the origins of life, including spontaneous generation and the cell theory. The document discusses the primordial soup hypothesis and experiments by Oparin and Miller supporting organic molecule formation from early Earth conditions. Finally, it analyzes fixist and evolutionist theories on the diversity of organisms, including Lamarckism on adaptation and inheritance of acquired traits, and Darwinism on natural selection.
The fossil was found in location F. Using the law of superposition, the fossil is older than fossils found in locations A, C, and D, but younger than fossils in locations H and I. Volcanic ash layers near location F were dated to 5 million years old (B) and 24 million years old (E). Therefore, the fossil is between 5 and 24 million years old, dating it to the Miocene epoch. The exact age cannot be determined.
The document summarizes a study that examined differences in decomposition and insect activity on pig carrion placed in sunlit versus shaded locations during winter in Canberra, Australia. 8 pig carcasses were placed in cages either in full sun or full shade and observed over approximately 3 months. No significant difference was found in temperature or decomposition rate between sunlit and shaded carrion. However, the insect populations and species present did vary strongly, with more insects and larger populations observed on the sunlit carrion. Forensic entomology methods were used to analyze the insect data and determine estimates of the post mortem interval.
Rocks, fossils, and ice cores help us paint a picture of Earth's history through various methods. The law of superposition and index fossils found in sedimentary rock layers allow us to relatively and absolutely date the formations. Ice cores provide information about past climate conditions over thousands of years by examining factors like carbon dioxide levels, volcanic ash deposits, and tree ring widths that indicate precipitation levels during each year of growth. Together, these natural records allow scientists to reconstruct Earth's environmental history.
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Here are a few tips to help manage your citations:
- Focus on quality over quantity. Make sure each citation directly supports your argument. Remove citations that are not essential.
- Consider grouping related citations together in a single paragraph to reduce clutter.
- Use citation management software like Zotero or Mendeley to organize your references as you write. This prevents duplication and makes formatting citations effortless.
- Consult your style guide for the proper way to cite sources when there are more than 3 authors. Many guides allow you to shorten citations after the first use.
- Check with your instructor on their preferences. Page limits may influence how many citations are appropriate. Focus on the most influential sources.
Man
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By Bonnie Swoger and Kim Hoffman
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The document summarizes the development of an integrated information literacy program in undergraduate chemistry at SUNY Geneseo's Milne Library. It provides examples of exercises given to freshmen, sophomores, and seniors to teach them how to locate and evaluate scientific literature using library resources. The program aims to introduce students to tools like SciFinder and Scopus at different levels of their chemistry education. Challenges to the program and ongoing improvements are also mentioned.
Preliminary Results Of The Fall 2008 Intd 105 AssessmentBonnie Swoger
The document summarizes preliminary results from a pretest and posttest assessment of students in an INTD 105 course. It analyzes student performance in meeting several goals and objectives related to demonstrating understanding of and ability to use the library website, catalog, databases, and resources. The results show improvements in many areas from the pretest to the posttest, such as increased understanding of services and ability to find appropriate materials, but ongoing challenges remain in some areas like determining availability of full text and selecting appropriate databases and search strategies.
Scientific researchers are one of the latest groups to experiment with blogs, wikis, and social networks. Researchers are using these tools to promote communication, to make new scientific discoveries, and to discover previous research. This program will look at web 2.0 tools aimed at the scientific community.
Using Environmental Geology to Teach Research Skills to UndergraduatesBonnie Swoger
The document discusses using environmental geology topics to teach undergraduate students research skills. It describes how students were given an in-class exercise to evaluate information from two articles on pharmaceuticals in water. Students then used SciFinder Scholar and internet sources to research the antibiotic sulfamethoxazole. They compared the types and reliability of information available from each source. The goal was to engage students in a real-world issue and have them practice skills like evaluating sources and developing search strategies to build their research abilities. Student feedback indicated the session helped them learn about credible sources and how to search databases for information.
Using Environmental Geology to Teach Research Skills to Undergraduates
The Contributions of Dr. J. Mark Erickson to the geological literature presentation
1. The Contributions Of
Dr. J. Mark Erickson To
The Geological Literature:
With Students And Scholars, From
The North Country To The
International Community
SLUGAC 8
Bonnie J. M. Swoger
Milne Library
SUNY Geneseo
6. JOURNAL OF
PA L E O N TO LOGY
1 971
Vo l . 41
No. 2
pp. 589-593
7. GASTROPODS
Erickson, J.M.,
1 971 , W i n d -
o r i e n te d
gastropod
shells as
i n d i c a to r s o f
p a l e ow i n d
d i r ec t i o n :
Journal of
Sedimentary
Re s e a r c h , v.
41 , n o . 2 , p .
589–593.
8. LIMULIDS
Holland
J r. , F. D . , E r i c k s o
n, J.M., and
O’Brien, D.E., 19
7 5 , C a s te r o l i m u l
u s : a n e w L a te
Cretaceous
generic link in
Limulid lineage:
Bulletins of
American
P a l e o n t o l o g y, v.
6 7 , n o . 2 87 , p .
2 3 5 – 24 9 .
New Genus: Casterolimulus
9. INSECTS
ON CLAMS
Erickson, J.M., 1
9 8 3 , Tr i c h o p te r o
domus
leonardi, a new
genus and
species of
p s yc h o my i i d
caddisfly
(Insecta:
Tr i c h o p te r a )
r e p r e s e n te d by
retreats from
the Paleocene
of North:
Journal of
P a l e o n t o l o g y, v.
57 , n o . 3 , p .
5 6 0 – 5 6 7.
New genus and species: Trichopterodomus leonardi
10. TRACE
FOSSILS
B j e r s te d t , T. W. ,
and
Erickson, J.M., 1
9 8 9 , Tr a c e
fossils and
bioturbation in
peritidal facies
o f t h e Po t s d a m -
Theresa
formations
(Cambrian-
Ordovician), Nor
t h we s t
Adirondacks:
P a l a i o s , v. 4 , n o .
3 , p . 2 0 3 – 2 24 .
11. FISH
C a r p e n te r, S . J . ,
Erickson, J.M.,
and
H o l l a n d , F. D . , 2
0 0 3 , M i g r a t i on
o f a L a te
C r et a c e o us
f i s h . : N a t u r e , v.
423, no.
6935, p. 70–
4, doi:
1 0 .1 0 3 8 / n a t ur
e 01 57 5 .
12. LEAVES
Peppe, D.J., Erick
son, J.M., and
H i c k y, L . J . , 2 0 0 7 ,
Fossil Leaf
Spec ies From The
Fox Hills
Formation (Upper
Cretaceous:
North
Dakota, USA) and
their
Paleogeographic
Significance:
Journal of
P a l e o n t o l o g y, v.
81 , no. 3, p.
550–567, doi:
1 0 . 1 6 6 6 / 0 5 0 6 7. 1
.
14. Journal Publications
Compass of Sigma Gamma Epsilon 8
Journal of Paleontology 3
Bulletin of the Buffalo Society of Natural Sciences 2
Journal of Sedimentary Research 2
North Dakota Academy of Science Proceedings 2
Proceedings of the North Dakota Academy of Science 2
Bulletins of American Paleontology 1
Earth Science Curriculum Project Newsletter 1
Nature 1
Palaeontology 1
Palaios 1
The New phytologist 1
The Open Paleontology Journal 1
15. COLLABORATION AND CO-AUTHORSHIP
Number of Co-authors by year
4
3
2
1
0
1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 2015
16. CITATIONS: BRIEF DIGRESSION
Web of Science (Science Citation Index)
Scopus
Google Scholar
Used only selectively for this study
18. TOP CITED PUBLICATIONS
Publication Scopus Web of Google
Science Scholar
S. J. Carpenter, J. M. Erickson, K. C. Lohmann, M. R.
Owen, Journal of Sedimentary Petrology 58, 706–723
(1988). 20 35 57
S. J. Carpenter, J. M. Erickson, F. D. Holland, Nature 423, 70–
4 (2003). 22 22 30
D. J. Peppe, J. M. Erickson, L. J. Hickey, Journal of
Paleontology 81, 550–567 (2007). 6 7 8
D. J. Peppe et al., The New Phytologist 190, 724–39 (2011). 17 15 30
J. Erickson, T. Bouchard, Journal of Paleontology 77, 1002–
1010 (2003). 4 4 7
J. W. Hoganson, J. M. Erickson, Palaeontology 48, 709–721
(2005). 5 5 5
T. W. Bjerstedt, J. M. Erickson, Palaios 4, 203–224 (1989). 21 0 38
19. TOP CITING JOURNALS
Journal Frequency
Journal of Sedimentary Research 13
Palaeogeography Palaeoclimatology Palaeoecology 7
Canadian Journal of Fisheries and Aquatic Sciences 5
Journal of Vertebrate Paleontology 4
New Phytologist 4
Palaios 4
PLOS ONE 4
Geology 3
Ichnos 3
Neues Jahrbuch fur Geologie und Palaontologie 3
Sedimentology 3
Earth and Planetary Science Letters 2
Environmental Biology of Fishes 2
Journal of Archaeological Science 2
Journal of Paleontology 4
Lethaia 2
Marine Ecology 2
Proceedings of the Royal Society B: Biological Sciences 2
Sedimentary Geology 2
20. STUDENT PUBLICATIONS
63 Senior Theses, starting in 1974
Co-authored with many students
91 publications identified
Gross underestimate
Let’s add to the list
23. AND MORE…
Links to the Mendeley Groups (and lists of publications by Dr.
E, citing Dr. E or by Dr. E’s students) are available online at
my website, the Undergraduate Science Librarian
The Undergraduate Science Librarian:
http://theundergraduatesciencelibrarian.org
Information Culture
http://blogs.scientificamerican.com/information-culture/
Direct link:
http://bit.ly/contributions_of_DrE
Editor's Notes
Just prior to this, first publications with students, Matt Klett in 1974
Indexing the major journals.Dr. E didn’t chase impact factors or highly selective journals (although he certainly was published in some of the best), but also chose to publish in local or regional journals that fit his topics
120 citations over time.Few self citations, double edged sword – citations are one way that new research is discovered. New self citations in 2000s seemed to lead to a re-discovery of some of ericksons earlier workThis is a low number – why – grey literature
India, Canada, Britain, France, Denmark, Poland, and New Zealand. One reference on Wikipedia: Hoganson, J.W., and Erickson, J.M., 2005, A New Species of Ischyodus (Chondrichthyes: Holocephali: Callorhynchidae) From Upper Maastrichtian Shallow Marine Facies of the Fox Hills and Hell Creek Formations, Williston Basin, North Dakota, USA: Palaeontology, v. 48, no. 4, p. 709–721, doi: 10.1111/j.1475-4983.2005.00475.x.