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
