Field assignment
- 2. How LakeTahoe was Formed South Lake Tahoe was formed by the rise and fall of faulting. About 24 million years ago tremendous uplifting formed the Sierra Nevada block. Lava flowing from Mt. Pluto then formed a barrier, the Truckee River. Water from snowfall and streams flow into the basin then creating a lake. (“Geology”)
- 3. Glaucous Larkspur Grows in wet meadows and along streams. (“Blackwell”) Very similar to western Larkspur but the Glaucous Larkspur has larger palmately divided and lobed leaves since it grows along side wet meadows and streams(“Blackwell”)
- 4. JeffreyPine Many people believe that the Jeffrey Pine tree evolved from the Ponderosa Pine. Jeffrey pine has a shorter growing season and is found at higher elevations and on colder and drier sites than ponderosa pine. (“Jeffrey”)
- 5. Jeffrey pine has physiological features that allow it to survive those fire. Scientist still don’t know what causes this tree to survive fires. It could be its thick fire-retardant bark, the barks structure or its chemical composition (“Jeffrey”)
- 6. Golden-Mantled Ground Squirrel Its from the family of sciuridaes. Its lives in forest, meadows, fields, and Alpine (“Golden- mantled “). Diet consists of nuts, seeds, grasses, fruits, and carrion (“Lake”).
- 7. Black Bear Black bears vary from blonde to black. Cinnamon brown is the most common. Black bears are omnivores. Average weight is 300 pounds. Can sprint up to 35 mph (“Lake”)
- 8. Granite Rocks The peaks surrounding the lake tahoe basin are mountains of granite (“The”). Granite is an intrusive igneous rock, meaning that it is composed of formerly molten material that cooled below the surface (“Sierra”)
- 9. IgneousRocks Basalt Basalt is still molten when they reach the surface, and resulting rapid cooling rate does not allow for crystal growth, giving the rock a more uniform appearance (“Sierra”)
- 10. Sandstone sedimentaryrock Sandstone is a sedimentary rock composed of sand- sized grains of mineral, rock or organic material. It also contains a cementing material that binds the sand grains together (“Sandstone”)
- 11. Metamorphic Rocks 130 million years ago the increased pressure and temperature from the Colliding plates caused the rocks to melt and formed lava that moved to the surface of the earth. The lava started to cool slowly this allowed crystals to form and then made the Granitic Rock we see in the Sierra Nevada mountains. In time the Lava plumes moved down to the block of sedimentary rock that was under the shallow Sea. The lava pushed through the sedimentary rock to make Metamorphic rock (“Tahoe. (n.d.)”)
- 12. Geology of the Lake Tahoe Basin. (n.d.). . Retrieved August 4, 2014, from http://www.fs.usda.gov/detail/ltbmu/learning/?cid=stelpr db5109570 Blackwell, L. (2006, January 1). Great Basin. Google Books. Retrieved August 4, 2014, from http://books.google.com/books?id=MNCQlYQj15gC&pg=P A45&lpg=PA45&dq=glaucous+larkspur&source=bl&ots=S5 L3rjz9ro&sig=SBA6Wb5FTeKP2wns89EX0ByECtU&hl=en& sa=X&ei=dIXeU5iUM4ihogS5jILgCg&ved=0CDQQ6AEwBg #v=onepage&q=glaucous%20larkspur&f=false
- 13. Lake Tahoe Basin Mgt Unit - Home. (n.d.). Lake Tahoe Basin Mgt Unit - Home. Retrieved August 4, 2014, from http://www.fs.usda.gov/detail/ltbmu/home/?cid=fsm 9_046595 Jeffrey Pine Forest. (n.d.). . Retrieved August 4, 2014, from http://www.calalive.org/content/jeffrey-pine- forest Golden-mantled Ground Squirrel Spermophilus lateralis. (2007, January 1). eNature: FieldGuides: Species Detail. Retrieved August 4, 2014, from http://enature.com/fieldguides/detail.asp?recnum=M A0124
- 14. The Lake Tahoe Basin | Lake Tahoe California. (n.d.). The Lake Tahoe Basin. Retrieved August 4, 2014, from http://www.tahoevacationguide.com/laketahoe.html Sierra Nevada Physical Geography. (n.d.). Sierra Nevada. Retrieved August 4, 2014, from http://www.geog.ucsb.edu/~joel/g148_f09/readings/sierra_ nevada/sierra_nevada.html Sandstone. (n.d.). : Sedimentary Rock. Retrieved August 4, 2014, from http://geology.com/rocks/sandstone.shtml Tahoe. (n.d.). All Things Tahoe. Retrieved August 4, 2014, from http://www.allthingstahoe.com/Tahoe.html