Sedimentary Rocks/EPCC/LM5 A
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This document discusses different types of sedimentary rocks including clastic sedimentary rocks like breccia, conglomerate, sandstone, siltstone and shale formed from weathered debris. It also discusses chemical sedimentary rocks like limestone, evaporites including rock salt and gypsum, chert and coal. Finally, it mentions several sedimentary structures including cross bedded sandstone, graded bedding, mud cracks, ripple marks and trace fossils.
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Sedimentary rocks are formed by the lithification of sediments and include clastic rocks from weathered rock fragments, chemical rocks from mineral precipitation, and organic rocks from accumulated biological matter. Sedimentary rocks provide clues to past environments through their composition and structures, and often contain fossils that reveal the history of life. Important resources like coal and oil are found within sedimentary layers.
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Sedimentary rocks cover approximately 75% of the world's land area. They can provide information about past climate conditions, environments, sources of sediment, and history of sediment transport and deposition. Sedimentary rocks are classified based on their texture (grain size and shape) and mineral composition. Major textures are clastic (discrete fragments) and nonclastic (interlocking crystals). Common types include conglomerate, sandstone, siltstone, shale, limestone, dolostone, evaporites, and coal. Grain size, sorting, rounding and composition are used to interpret depositional environments and transport history.
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This document provides an overview of sedimentary rocks, including their classification and common types. It discusses how sedimentary rocks form from sediments produced by weathering and are later cemented. The document classifies sedimentary rocks into detrital rocks (formed from rock fragments), chemically formed rocks like limestone, and residual deposits like laterite and soils. Detrital rocks like sandstone and shale are the most abundant sedimentary rocks, comprising around 95% of sedimentary layers and 4% and 0.75% of the Earth's crust, respectively.
Sedimentary rocks
Sedimentary rocks form 75% of Earth's exposed surface. They are formed by the compaction and cementation of sediments such as rock fragments, mineral grains, and organic materials. Sedimentary rocks often form in layers, with older layers typically located at the bottom, although forces can sometimes overturn the layers. Sedimentary rocks are classified as detrital, chemical, or organic based on their formation process and composition.
Classification of sedimentary
Classification of sedimentary Rocks
************************************
Sedimentary rocks are formed by the accumulation of sediments. There are three basic types of sedimentary rocks.
1.Clastic
2.Chemical
3.Organic
for more notes/ppt please visit īvinoychakmalibrary.blogspot.in
Sedimentary & Metamorphic Rocks
Sedimentary rocks form through the compaction and cementation of sediments. There are three main types: clastic sedimentary rocks which form from fragments of other rocks; chemical sedimentary rocks which form from precipitation of minerals from solution; and organic sedimentary rocks which form from remains of plants and animals. Sedimentary rocks preserve features that reflect the environment of deposition such as layering, fossils, ripple marks, and mud cracks.
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Sedimentary rocks form from the compaction and cementation of sediments such as sand, mud, and minerals. There are two main types - clastic rocks which form from solid particle sediments, and chemical rocks which form from mineral precipitation. Common sedimentary rocks include conglomerate, sandstone, limestone, shale, and laterite. Sedimentary structures within the rocks like ripple marks, cross-bedding, and mudcracks provide clues about the depositional environment.
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Sedimentary rocks form 75% of Earth's exposed surface. They are formed by the compaction and cementation of sediments such as rock fragments, mineral grains, and organic materials. Sedimentary rocks often form in layers, with older layers typically located at the bottom, although forces can sometimes overturn the layers. Sedimentary rocks are classified as detrital, chemical, or organic based on their formation process and composition.
Classification of sedimentary
Classification of sedimentary Rocks
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Sedimentary rocks are formed by the accumulation of sediments. There are three basic types of sedimentary rocks.
1.Clastic
2.Chemical
3.Organic
for more notes/ppt please visit īvinoychakmalibrary.blogspot.in
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Sedimentary rocks form through the compaction and cementation of sediments. There are three main types: clastic sedimentary rocks which form from fragments of other rocks; chemical sedimentary rocks which form from precipitation of minerals from solution; and organic sedimentary rocks which form from remains of plants and animals. Sedimentary rocks preserve features that reflect the environment of deposition such as layering, fossils, ripple marks, and mud cracks.
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Sedimentary rocks form from the compaction and cementation of sediments such as sand, mud, and minerals. There are two main types - clastic rocks which form from solid particle sediments, and chemical rocks which form from mineral precipitation. Common sedimentary rocks include conglomerate, sandstone, limestone, shale, and laterite. Sedimentary structures within the rocks like ripple marks, cross-bedding, and mudcracks provide clues about the depositional environment.
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Sedimentary rocks are formed by the accumulation and compaction or cementation of sediments. There are three main types - clastic sedimentary rocks which are composed of rock fragments transported by water, wind or ice; chemical sedimentary rocks which form from minerals precipitating from water; and organic sedimentary rocks which are formed from the remains of organisms. Sedimentary rocks can be further classified based on sediment size and include conglomerates, sandstones, shales, evaporites, and coal. They often exhibit layering, ripples, mud cracks, fossils, and concretions.
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This chapter discusses sedimentary rocks and the processes involved in their formation. It describes how clastic and chemical sediments are formed from weathering and precipitation, respectively, and how they are transported, deposited, and lithified into sedimentary rocks. Clastic sediments like gravel, sand, silt and clay are sorted by size and shape during transport. Chemical sediments form through inorganic precipitation or biochemical processes. Sedimentary structures and fossils within the rocks provide clues about the depositional environment. Compaction and cementation convert sediments into solid sedimentary rocks such as sandstone, siltstone, mudstone, conglomerate and various chemical rocks.
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This document summarizes key information about sedimentary rocks, including their formation processes (mechanical, organic, chemical), structural features (stratification, lamination, cross-bedding), and common types (limestone, sandstone, shale, laterite). Sedimentary rocks form from the deposition and consolidation of sediments and make up 70-80% of the Earth's surface. Their formation involves compaction, cementation, and crystallization. Structural features provide clues to depositional environments. Common types are described along with their compositions and uses.
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Sedimentary rocks form from the compaction and cementation of sediments. There are three main types: detrital (clastic) rocks that form from lithified rock fragments and minerals, chemical rocks that precipitate directly from solution, and organic rocks that accumulate from biological debris. Sedimentary rocks provide clues about past environments and climates based on their composition, structures like cross-bedding and ripples, and any fossil content. Important resources like coal and oil are also found within sedimentary basins.
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Clastic sedimentary rocks are classified based on grain size into conglomerate, sandstone, siltstone, shale and mudstone.
Conglomerates contain rounded gravel size clasts (>2mm) in a finer matrix. They form from erosion of other rocks. Sandstones contain quartz and feldspar grains between 0.06-2mm. Shales and mudstones have the finest grains (<0.06mm) composed of clay minerals and quartz silt. Shales are fissile while mudstones are non-fissile. Clastic rocks form from weathering and erosion of older rocks transported by rivers, glaciers, wind or ocean currents.
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Sedimentary rocks are formed by the consolidation and cementation of sediments. Sediments are deposited under water by processes like weathering and erosion of pre-existing rocks. They are then transported by agents such as water, ice, or wind before being deposited. Over time and with sufficient pressure and cementation, sediments lithify to form sedimentary rocks. Sedimentary rocks can be clastic rocks composed of fragments, or non-clastic chemical and organic rocks formed through precipitation or organic processes. Common sedimentary rock types include conglomerates, sandstones, shales, limestones, dolomites, gypsum, halite, and coal.
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Sedimentary rocks are formed by the lithification of sediments and include clastic sedimentary rocks such as sandstone and shale that are formed from fragments of pre-existing rocks transported by water, wind or ice. They also include chemical sedimentary rocks such as limestone that are formed via precipitation from solution. Sedimentary structures within these rocks provide clues about the depositional environment, and sedimentary rocks are classified based on their mineral composition, grain size, sorting and rounding. Common sedimentary rocks used in construction include sandstone, limestone and shale.
Shale
Shale is a fine-grained sedimentary rock formed from compacted silt and clay-sized particles. It is characterized by being fissile, meaning it splits easily into thin layers, and laminated, consisting of many thin layers. Shale is composed mainly of clay-sized mineral grains such as clay minerals, quartz, and feldspar. It forms through the compaction and consolidation of silt and clay over time. Shale is classified based on its mineral composition and has a variety of uses including in brick and tile manufacturing.
Stratified rocks
Stratified rocks are formed from layers of sediment or volcanic material that build up over time. The layers can range significantly in thickness from millimeters to meters and come in different shapes. Examples of stratified rocks include sedimentary rocks with clear layering as well as some igneous rocks, such as granite, that form distinct layers when they cool and harden on the Earth's surface.
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Organic rocks and fossil fuels
Organic and chemical sedimentary rocks form through different processes. Organic sedimentary rocks, like coal and limestone, form from the remains of living organisms that accumulate and are compressed over time. Chemical sedimentary rocks, like salt deposits and dolostone, form through chemical reactions and precipitation when conditions favor dissolved chemicals in water to solidify and settle as layers of sediment. Fossil fuels like coal, oil, and natural gas were formed from the remains of ancient organisms that lived hundreds of millions of years ago during the Carboniferous Period and became buried and compressed over long periods of time.
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This document summarizes the three main types of sedimentary rocks: clastic sedimentary rocks which are formed by weathering processes breaking down other rocks into particles; chemical sedimentary rocks which are formed by precipitation of dissolved substances like halite and limestone; and organic sedimentary rocks which are formed from the remains of living organisms like coal and petroleum. Examples of each rock type are provided along with their typical properties.
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Sedimentary rocks cover approximately 75% of the world's land area. They can provide information about past climate conditions, environments, sources of sediment, and history of sediment transport and deposition. Sedimentary rocks are classified based on their texture (grain size and shape) and mineral composition. Major textures are clastic (discrete fragments) and nonclastic (interlocking crystals). Common types include conglomerate, sandstone, siltstone, shale, limestone, dolostone, evaporites, and coal. Grain size, sorting, rounding and composition help interpret the depositional environment.
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This document summarizes key information about sedimentary rocks, including their formation processes (mechanical, organic, chemical), structural features (stratification, lamination, cross-bedding), and common types (limestone, sandstone, shale, laterite). Sedimentary rocks form from the deposition and consolidation of sediments and make up 70-80% of the Earth's surface. Their formation involves compaction, cementation, and crystallization. Structural features provide clues to depositional environments. Common types are described along with their compositions and uses.
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Sedimentary rocks form from the compaction and cementation of sediments. There are three main types: detrital (clastic) rocks that form from lithified rock fragments and minerals, chemical rocks that precipitate directly from solution, and organic rocks that accumulate from biological debris. Sedimentary rocks provide clues about past environments and climates based on their composition, structures like cross-bedding and ripples, and any fossil content. Important resources like coal and oil are also found within sedimentary basins.
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Clastic sedimentary rocks are classified based on grain size into conglomerate, sandstone, siltstone, shale and mudstone.
Conglomerates contain rounded gravel size clasts (>2mm) in a finer matrix. They form from erosion of other rocks. Sandstones contain quartz and feldspar grains between 0.06-2mm. Shales and mudstones have the finest grains (<0.06mm) composed of clay minerals and quartz silt. Shales are fissile while mudstones are non-fissile. Clastic rocks form from weathering and erosion of older rocks transported by rivers, glaciers, wind or ocean currents.
Sedimentary rocks
Sedimentary rocks are formed by the consolidation and cementation of sediments. Sediments are deposited under water by processes like weathering and erosion of pre-existing rocks. They are then transported by agents such as water, ice, or wind before being deposited. Over time and with sufficient pressure and cementation, sediments lithify to form sedimentary rocks. Sedimentary rocks can be clastic rocks composed of fragments, or non-clastic chemical and organic rocks formed through precipitation or organic processes. Common sedimentary rock types include conglomerates, sandstones, shales, limestones, dolomites, gypsum, halite, and coal.
Sedimentary rocks
Sedimentary rocks are formed by the lithification of sediments and include clastic sedimentary rocks such as sandstone and shale that are formed from fragments of pre-existing rocks transported by water, wind or ice. They also include chemical sedimentary rocks such as limestone that are formed via precipitation from solution. Sedimentary structures within these rocks provide clues about the depositional environment, and sedimentary rocks are classified based on their mineral composition, grain size, sorting and rounding. Common sedimentary rocks used in construction include sandstone, limestone and shale.
Shale
Shale is a fine-grained sedimentary rock formed from compacted silt and clay-sized particles. It is characterized by being fissile, meaning it splits easily into thin layers, and laminated, consisting of many thin layers. Shale is composed mainly of clay-sized mineral grains such as clay minerals, quartz, and feldspar. It forms through the compaction and consolidation of silt and clay over time. Shale is classified based on its mineral composition and has a variety of uses including in brick and tile manufacturing.
Stratified rocks
Stratified rocks are formed from layers of sediment or volcanic material that build up over time. The layers can range significantly in thickness from millimeters to meters and come in different shapes. Examples of stratified rocks include sedimentary rocks with clear layering as well as some igneous rocks, such as granite, that form distinct layers when they cool and harden on the Earth's surface.
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Understanding the sedimentary rocks - Geotalk 2 (MGSS)
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Organic and chemical sedimentary rocks form through different processes. Organic sedimentary rocks, like coal and limestone, form from the remains of living organisms that accumulate and are compressed over time. Chemical sedimentary rocks, like salt deposits and dolostone, form through chemical reactions and precipitation when conditions favor dissolved chemicals in water to solidify and settle as layers of sediment. Fossil fuels like coal, oil, and natural gas were formed from the remains of ancient organisms that lived hundreds of millions of years ago during the Carboniferous Period and became buried and compressed over long periods of time.
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The document discusses different types of sedimentary and metamorphic rocks. It states that sandstone forms from cementation, conglomerate forms from compaction, coal forms from organic material, and limestone forms from organic material or liquid solutions. Sedimentary rocks can contain fossils. Metamorphic rocks form from existing rocks undergoing changes from heat and pressure, and examples given are shale transforming to slate and limestone transforming to marble.
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Fossils are the preserved remains or traces of ancient organisms that can be used to identify the age of rocks. There are several ways fossils can form including mummification in dry places, preservation in amber or tar seeps, freezing, petrification through mineral replacement, carbon imprints, or as molds and casts. Trace fossils are fossilized tracks or burrows that reveal animal behaviors. Index fossils and key beds containing distinctive fossils are used to date rock layers and correlate locations. Together fossils provide evidence of plate tectonics through the past distribution of organisms.
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Sedimentary rocks form through the compaction and cementation of sediments. There are three main types: clastic rocks like shale and sandstone form from fragments of pre-existing rocks; chemical rocks like rock salt form through precipitation from solution; and organic rocks like coal form from the remains of plants and animals. Clastic rocks specifically form through the weathering of parent rocks, transportation of fragments by wind/water, deposition, and cementation as minerals fill the spaces between fragments.
Es7
The document discusses three main types of sedimentary rocks: clastic rocks, chemical rocks, and organic rocks. Clastic rocks like shale, sandstone, and conglomerate form from fragments of pre-existing rocks. Chemical rocks such as rock salt and limestone form via precipitation from solution. Organic rocks including coal form from the remains of plants and animals. The key processes involved in forming clastic sedimentary rocks are weathering of source rocks, transport of fragments by wind/water, deposition, and cementation by minerals like silica.
Sedimentary rocks
This document defines and describes different types of sedimentary rocks. It explains that sedimentary rocks form from the accumulation and lithification of sediments such as sand, silt, clay, and minerals or organic matter. There are three main types of sedimentary rocks: clastic rocks, which form from mechanical weathering debris; chemical rocks, which form from precipitation of minerals from solution; and organic rocks, which form from accumulation of plant and animal debris. Examples of different sedimentary rocks are provided along with brief descriptions of their formation processes.
Clastic and Non-Clastic Sediments
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Three Types of Rocks
There are three main types of rocks: sedimentary, igneous, and metamorphic. Sedimentary rocks form from the accumulation of sediments or organic matter. Igneous rocks form from the cooling of molten rock material either below or above the Earth's surface. Metamorphic rocks were once sedimentary or igneous rocks that were altered by heat, pressure, and chemical processes underground.
sedimentaryrocks-190716154658.pdf
Sedimentary rocks form through the compaction and cementation of sediments. There are two main types - clastic sedimentary rocks, which form from eroded fragments of pre-existing rocks, and chemical sedimentary rocks, which form through precipitation or biochemical processes. Sedimentary rocks are classified based on their mineral composition, grain size, sorting, and rounding. Sedimentary structures within the rocks provide clues about the depositional environment.
Shales
The document summarizes key information about shales, argillite, and siltstone. It discusses the rock cycle and how these sedimentary rocks form. Shales form through compaction of fine particles in slow-moving water. Their composition includes clay minerals, quartz, and feldspar. Shales exhibit fissility and laminations. Argillite is a metamorphosed shale or siltstone with increased induration. Siltstone contains silt-sized particles cemented together. These mudrocks are economically important raw materials.
Sediments are solid fragments of rocks, minerals.pptx
Sediments are solid fragments that are deposited over time by various processes and can become sedimentary rocks. There are three main types of sediments - clastic formed from rock fragments, chemical formed from mineral precipitation, and biological formed from organic material. Sedimentary rocks provide information about Earth's history and make up 75% of the Earth's surface.
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Sedimentary rocks form from the consolidation of sediments and are divided into clastic, chemical, and biochemical types. Clastic rocks like sandstone and shale form from weathered fragments transported by wind, water, or ice. Chemical rocks like limestone precipitate directly from solution. Biochemical rocks such as coal form from the remains of living organisms. Sedimentary structures and fossils within rocks provide clues about depositional environments. Sedimentary rocks are economically important resources for construction materials, energy, and industrial minerals.
Defining basalt and sandstone.
Sandstone is a sedimentary rock composed of sand-sized grains of minerals and rock fragments bound together by a cement, such as silica or calcium carbonate. It forms under both marine and terrestrial environments. Sandstone has been widely used as a building material in structures like temples, homes, and monuments due to its hardness yet ability to be carved. It is also used for grindstones, statues, and filtering pollutants from water due to its porous nature. Major deposits of sandstone can be found around the world, including in the United States, South Africa, and Europe.
Field assignment part 1
The Chesapeake Bay was formed when rising sea levels flooded the Susquehanna River valley around 10,000 years ago. Parts of the bay contain cliffs composed of deposits from receding waters millions of years ago that are famous for fossilized shark teeth. The bay is generally shallow with an average depth of 21 feet, including tributaries, and over 24% is less than 6 feet deep.
vdocument.in_unit-1-introduction-to-sedimentology-and-stratigraphy.pptx
Sediments form through the weathering and erosion of rocks, followed by transportation and deposition. There are three main types of sediments: mechanical (clastic), chemical, and organic. Sedimentary rocks form through the compaction and cementation of sediments via the process of diagenesis. Sedimentology involves the study of sediment formation and depositional environments, while stratigraphy examines the temporal and spatial relationships between sedimentary strata. Key methods used in sedimentology include facies analysis, particle size and shape analysis, lithological analysis, and stratigraphic mapping and description.
Sediment and sedimentary rocksssssssssssssssssssssss begin here
This document provides an overview of sedimentary rocks and the processes involved in their formation. It discusses the four main types of sedimentary rocks: clastic, chemical, biochemical, and organic. For clastic sedimentary rocks specifically, it outlines the five stages of formation - weathering, erosion, transportation, deposition, and lithification. It also describes common sedimentary structures like stratification, cross-bedding and ripple marks that provide clues about depositional environments. Finally, it lists some examples of terrestrial and marine sedimentary environments.
Sedimentary depositional environments
This document discusses different sedimentary environments including terrestrial, marginal marine, and marine settings. Terrestrial environments include fluvial systems like braided rivers and meandering streams, alluvial fans, glacial deposits, lacustrine environments, and aeolian deposits in deserts. Marginal marine environments are located along the continental boundary and include beaches, barrier islands, lagoons, estuaries, and tidal flats. Marine environments discussed are coral reefs, continental shelf, continental slope, continental rise, and abyssal plain. Different sedimentary structures form in each environment providing clues to depositional conditions.
Rocks
Rocks form in three main types - igneous, sedimentary, and metamorphic - depending on their formation process. Igneous rocks form when magma cools and hardens, sedimentary rocks form through the compaction and cementation of sediments, and metamorphic rocks form through the alteration of existing rocks by heat, pressure, and chemical reactions. The main types of rocks each have distinguishing characteristics and provide clues about Earth's environmental history.
Rocks - Sedimentary
Sedimentary rocks form through the compaction and cementation of sediments. There are three main types: clastic rocks form from fragmented sediments like sand and gravel; chemical rocks form when dissolved minerals precipitate out of solution, like limestone and rock salt; and organic rocks form from the remains of once-living organisms, such as coal, petrified wood, and fossil-bearing limestone.
Rock formation
Sedimentary rock is formed from the compaction and lithification of layers of sediment over millions of years. Sandstone forms from quartz and feldspar minerals in sediment, and limestone forms from calcium carbonate from marine organisms. Igneous rock forms when magma cools and solidifies, such as granite. Metamorphic rock forms from the alteration of sedimentary or igneous rock under heat and pressure, changing the rock type, such as slate forming from shale and marble from limestone. Stone should be laid according to its natural bedding plane for maximum strength, or on its edge for overhanging features.
Lecture # 02, 03 316 geology and earth quake engineering 5th
The document discusses different types of rocks:
1. Igneous rocks form from cooling magma and include intrusive granitic rocks, extrusive volcanic rocks like basalt, and hypabyssal rocks.
2. Sedimentary rocks form through the lithification of sediments and include clastic rocks like sandstone, chemical rocks like limestone, and organic rocks like coal.
3. Metamorphic rocks form from the alteration of existing rocks under heat, pressure, and fluids, changing their texture and minerals. Foliated rocks include schist and gneiss, while non-foliated rocks include marble and quartzite.
Petrologi 8-sedimen
This document provides an overview of a semester 2 course on petrology from 2007-2008 taught by Hill Gendoet Hartono. The course covers sedimentary rocks, sediments, the rock cycle, types of sedimentary rocks including clastic rocks like sandstones and shales, and chemical rocks like limestones. It discusses the processes of weathering, erosion, transport, deposition, and lithification that form sedimentary rocks. Key concepts covered are sedimentary environments, plate tectonics settings, and the economic importance of sedimentary rocks.
Rocks
Rocks are composed of minerals and are classified based on their origin and formation process. The three main types of rocks are igneous, sedimentary, and metamorphic. Igneous rocks form from the cooling and solidification of magma either deep underground, near the surface, or on the surface. Sedimentary rocks form from the compaction and cementation of sediments. Metamorphic rocks form from the alteration of existing igneous and sedimentary rocks through heat, pressure, and chemical processes usually associated with tectonic activity. Rocks serve many important purposes and understanding their classification provides insight into the geological history of the earth's crust.
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Sediments are solid fragments of rocks, minerals.pptx
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Sediment and sedimentary rocksssssssssssssssssssssss begin here
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Lecture # 02, 03 316 geology and earth quake engineering 5th
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Metamorphic Rocks/EPCC/LM6
Metamorphism occurs when rocks undergo changes in temperature and pressure due to burial or intrusion. There are several types of metamorphism that produce different textures and minerals depending on factors like stress, fluids, time, and temperature/pressure conditions. Regional metamorphism results from tectonic forces building mountains and produces foliated rocks through recrystallization and deformation. Plate tectonics drives metamorphism through processes like subduction and burial that subject rocks to high pressures and temperatures.
Igneous Rocks/EPCC/LM4
Igneous rocks form from the cooling and solidification of magma or lava. They can be intrusive or extrusive, depending on where the magma cools. Intrusive igneous rocks cool slowly underground, resulting in large mineral grains, while extrusive rocks cool rapidly at the surface, resulting in small mineral grains or a glassy texture. The mineral assemblage and texture of an igneous rock provides clues about its composition and conditions of formation. Bowen's reaction series describes the order in which minerals crystallize as magma cools.
Magma and Volcanoes/EPCC/LM4
Magma is molten rock beneath Earth's surface that rises toward the surface due to being less dense than surrounding rock. Magma that reaches the surface erupts through volcanoes. There are different types of volcanoes that can have eruptions ranging from gentle lava flows to catastrophic explosions. The composition of magmas varies but is dominated by silica and results in three main types: basaltic, andesitic, and rhyolitic. Basaltic magma is erupted by most volcanoes and forms lava flows, while more viscous andesitic and rhyolitic magmas can lead to explosive eruptions due to gas bubbles rising slowly in the thick lava.
Weathering/EPCC/LM5
Weathering is the breaking down of rocks, soils and minerals through direct contact with the atmosphere. It occurs through both physical and chemical processes. Chemical weathering involves chemical reactions that transform rocks and minerals into new combinations, through processes like dissolution, hydrolysis, oxidation, and carbonation. The effectiveness of chemical weathering increases with greater surface area exposure and is influenced by factors like mineralogy, rock type, climate, and the presence of moisture and heat.
Rock Cycle/EPCC/LM3
The document discusses the rock cycle and how different types of rocks are formed. It defines rocks as aggregates of minerals and describes the three main types - igneous, sedimentary, and metamorphic - based on their mode of origin. The rock cycle describes how rocks can be transformed into different types through geological processes like crystallization, weathering and erosion, deposition, lithification, and metamorphism due to pressure and heat within the Earth. Plate tectonics also influence the rock cycle as rocks form at sites of volcanic activity, mountain building, and sediment deposition at plate boundaries.
Minerals/EPCC/LM2
Minerals are naturally occurring inorganic solids with a defined chemical composition and crystalline structure. Most minerals are made up of combinations of common elements like oxygen, silicon, aluminum, iron, calcium, and magnesium. Minerals form in different crystal structures and exhibit physical properties like cleavage, hardness, luster, and streak that can be used to identify them. There are several classes of minerals including silicates, carbonates, and sulfides, with silicate minerals making up over 90% of the Earth's crust. Important rock-forming minerals are quartz, feldspar, mica, amphibole, pyroxene and olivine in the silicate class and calcite in the carbonate class.
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Sedimentary Rocks/EPCC/LM5 A
- 3. Clastic Sedimentary Rocks Breccia Conglomerate Grain size is greater than 2 mm or granule size or larger
- 4. Clastic Sedimentary Rocks Sandstones Sandstone is a clastic sedimentary rock made up mainly of sand-size (1/16 to 2 millimeter diameter) weathering debris. Environments where large amounts of sand can accumulate include beaches, deserts, flood plains and deltas.
- 5. Clastic Sedimentary Rocks Siltstone is a clastic sedimentary rock that forms from silt-size (between 1/256 and 1/16 millimeter diameter) weathering debris.
- 6. Clastic Sedimentary Rocks Shale is a clastic sedimentary rock that is made up of clay-size (less then 1/256 millimeter in diameter) weathering debris. It typically breaks into thin flat pieces.
- 7. Chemical Sedimentary Rocks Limestone is a rock that is composed primarily of calcium carbonate. It can form organically from the accumulation of shell, coral, algal and fecal debris. It can also form chemically from the precipitation of calcium carbonate from lake or ocean water.
- 8. Chemical Sedimentary Rocks Evaporites Rock Salt and Rock Gypsum are chemical sedimentary rocks that forms from the evaporation of ocean or saline lake waters.
- 9. Chemical Sedimentary Rocks Chert is a microcrystalline or cryptocrystalline sedimentary rock material composed of silicon dioxide (SiO2). It breaks with a conchoidal fracture, often producing very sharp edges Coal is an organic sedimentary rock that forms mainly from plant debris.
- 10. Sedimentary Structures Cross bedded sandstone
- 12. Sedimentary Structures Mud Cracks Fossilized Mud Cracks