Geology of lakeTahoeBy:Steven Meza
Lake Tahoe Facts• Lake Tahoe was formed by tectonic movements about 2 million years ago. The Tahoebasin went under and bet...
Lake Tahoe Vegetation• Pine trees common to the Tahoe basin include Jeffrey pine, ponderosa and sugarpines• There is a wid...
Green leaf Manzanita• Green leaf Manzanita scientific name Arctostaphylos patula Kingdom: Plantae andEricacecae family is ...
Snow Plant• Scientific name: Sarcodes sanguinea• Order: Ericales• Family: Ericaceae• Genus: Sarcodes• Species: S. sanguine...
Lake Tahoe Rocks:Granite Rocks• It is a type of intrusive, igneous rock, and felsic• Granite rocks form by coiling magma t...
Basalt Rocks• It is an aphanitic igneous rock contains feldspar and quartz and isone of the most common rocks in the world...
Northern Goshawk• Kingdom: Animalia• Phylum: Chordata• Class: Aves• Order: Falconiformes• (Family: Accipitridae• Genus: Ac...
Pika• Kingdom: Animalia• Phylum: Chordata• Class: Mammalia• Order: Lagomorpha• Family: Ochotonidae• Genus: Ochotona• Pika ...
Works cited• http://en.wikipedia.org/wiki/Pika• http://en.wikipedia.org/wiki/Northern_Goshawk• http://www.keeptahoeblue.or...
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Geology of lake tahoe

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Geology of lake tahoe

  1. 1. Geology of lakeTahoeBy:Steven Meza
  2. 2. Lake Tahoe Facts• Lake Tahoe was formed by tectonic movements about 2 million years ago. The Tahoebasin went under and between the Sierra crest in the west and east of the Carsonrange.• Between 155-300 million years ago the north American plate broke off from Pangaeaand drifted west towards a with the sierra Nevadas• Tectonic shifts also created volcanic activity about 4-25 million years ago which causemagma to through the faults which resulted in damming and gaps filling in the valley• The formation of Fallen leaf lake, Donner lake and Emerald Bay where formed bymovement of glaciers about ten thousand years ago during an ice age• Sources History of Tahoe, Geology of Tahoe and Sierra Nevada
  3. 3. Lake Tahoe Vegetation• Pine trees common to the Tahoe basin include Jeffrey pine, ponderosa and sugarpines• There is a wide range of vegetation that ranges from plants being up 10 thousand feethigh to 300 feet below the surface of the lake.• In the 1800’s lodging began in the basin and in 1859 60% of trees had been clear cut• The Three most common type of vegetation found in lake Tahoe are shrubassociation, subalpine forest, meadow association, and deciduous riparian• Source protecting plant communities in the Lake Tahoe Basin
  4. 4. Green leaf Manzanita• Green leaf Manzanita scientific name Arctostaphylos patula Kingdom: Plantae andEricacecae family is part of and generally found in the western mountain range• Its adaptation of the plant consist of well drained rocky slopes, and is often foundnear high elevations and forest.• They can withstand wet winters and dry summers usually 1-2 m tall• Source NRCS plant life
  5. 5. Snow Plant• Scientific name: Sarcodes sanguinea• Order: Ericales• Family: Ericaceae• Genus: Sarcodes• Species: S. sanguine• This plant get its life from an underground fungi and doesn’t use photosynthesis• It is often found near pine trees due to its dependency of fungi. It has no chlorophyllso it must get nutrients from fungi called mycorrhizae• The size ranges from 6-12 inches in height and is tube shaped and blume throughmay to july• Source U.S Forest Service•
  6. 6. Lake Tahoe Rocks:Granite Rocks• It is a type of intrusive, igneous rock, and felsic• Granite rocks form by coiling magma that is trapped under earth’ssurface• It is made up of quartz, feldspar and mica• Much of the earth’s continental crust in contains granite and most ofit came during the Precambrian age• Source: Wikipedia.org/granite
  7. 7. Basalt Rocks• It is an aphanitic igneous rock contains feldspar and quartz and isone of the most common rocks in the world• Has a fine grain size and often looks blacks or greyish and consist ofolivine and pyroxene• Created when lava flow sheets building in a plateau or is balloon upthat is formed when it comes in contact with water and it will haveflossy outside layer or fine grained• Source: rocks.com, Wikipedia
  8. 8. Northern Goshawk• Kingdom: Animalia• Phylum: Chordata• Class: Aves• Order: Falconiformes• (Family: Accipitridae• Genus: Accipiter• Species: A. gentilis• Live in the Tahoe basin all year long and prey on other birds and rodents• Has a long tail, short broad wings and can reach speeds up to 38 mph• There breeding habit include nesting through march and April and time forthe eggs to hatch ranges from 28-35 days and the young leave the nestusually after a month• Source Wikipedia , KeepTahoeBlue.org
  9. 9. Pika• Kingdom: Animalia• Phylum: Chordata• Class: Mammalia• Order: Lagomorpha• Family: Ochotonidae• Genus: Ochotona• Pika are often found in the basins rocky peaks and prefer the high elevations due totheir sensitivity to warm temperatures• The have adapted to the Tahoe winters buy using stacked up plants for their shelter .• They are herbivores and are diurnal and are very active during the daytime and veryactive before winter season.• Source Wikipedia , KeepTahoeBlue.org
  10. 10. Works cited• http://en.wikipedia.org/wiki/Pika• http://en.wikipedia.org/wiki/Northern_Goshawk• http://www.keeptahoeblue.org/abouttahoe/animals-plants• Protecting plant communities in the Lake Tahoe Basinhttp://eh2o.saic.com/tiimsWebsite/Content/BasinTopics/vegetation/default.html• http://en.wikipedia.org/wiki/Basalt• History of Tahoehttp://www.gotahoenorth.com/about-tahoe/tahoe-history-and-facts/history-of-tahoe• Geology of Lake Tahoe and Sierra Nevadahttp://donsnotes.com/tahoe/geology.html• NRCS Plant Guidehttp://www.plant-materials.nrcs.usda.gov/pubs/capmspg5871.pdf• US forest Servicehttp://www.fs.fed.us/wildflowers/plant-of-the-week/sarcodes_sanguinea.shtml• Rocks.com http://www.rocks-rock.com/basalt.html

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