Upload
elvin-terry
View
213
Download
0
Tags:
Embed Size (px)
Citation preview
Point Reyes National Seashore
By: Jeremy Jack
History of Park
• Point Reyes National Seashore was established by President John F. Kennedy in 1962.
• It was established to preserve and protect the wilderness, natural ecosystems, and cultural resources along the diminishing undeveloped coastline of the western United States.
How Was It Formed?• Point Reyes is a peninsula that is a unique piece of
continental crust attached to western Marin County in northern California
• It was not formed at its current location, but was “transported” via plate tectonic movement from somewhere near the vicinity of the Monterey Bay some 15 million years ago
• It continues to travel in a northwestwardly direction on the Pacific Plate an average of two inches per year
Where is Point Reyes?• Point Reyes is in Marin County, California, near
San Francisco. If you bicycled from Bloomfield Township, it would take 9 days and 13 hours
• It’s a peninsula that is geologically separated from the rest of Marin County and almost all of the continental United States by a rift zone of the San Andreas Fault.
• It’s practically an island!
Park History• Coast Miwok Indians were the first human inhabitants of the Peninsula.
Over 120 known village sites exist within the park. The ancient home of the Coast Miwok people, the dramatic landscape of the Point Reyes peninsula with its wave battered cliffs, remained undiscovered by European explorers until the late 1500's.
• Point Reyes has dark, surging waters and treacherous crags. It has commanded fear and respect from generations of sailors. These treacherous waters conceal the remains of many ships that crashed
• Lighthouse and lifesaving station were constructed in 1800’s to alert ships' crews of the trecherous point and to save the passengers of those ships that didn't safely navigate past the point
special land forms• Bay Mouth Bar -• Drowned River Valley• Fault• Fault• Fault Line• Lagoon• Estuary• Landslide• Marine-built Terrace• Marshland• Offset Stream• Sag Pond• Sandspit• Sea arch• Sea caves• Sea Cliff• Sea Stack• Tafone• Waterfall Beach
Animals• Rough-skinned newt, the California newt, the slender salamander, and
arboreal salamander, Bullfrog ,tree frog, red-legged frog, Ernestina• snowy plover northern spotted owl.• Fairy Shrimp, Tadpole Shrimp, Water Fleas, & Clam Shrimp Barnacles, Fish Parasites, &
Copepods Barnacles, Fish Parasites, & Copepods Shrimp, Crab, Lobsters, & Krill• Coho Salmon & Steelhead Trout• Orb Weaver Spider Dragonflies Myrtle's Silver spot butterfly• Bobcat Tule Elk sea lions seals dear Mountain Beaver• California red-sided garter snake
Rocks
• The lighthouse on the Point Reyes headlands is built upon a formation of rock called Point Reyes Conglomerate
• The basement rock of Point Reyes Peninsula is granite.
• Shale, chert, graywacke and pillow lava are common members of this complex
Plants
• Five-finger fern, California maiden-hair, wood fern, bracken
• Purple needle, California fescue, California oatgrass
• Fly Agaric Gemmed Puffball• Douglas-fir • California poppies
How land is changing• Geologically, Point Reyes is a land in motion. The Point
Reyes National Seashore rides high on the eastern edge of the Pacific plate, which creeps northwestward about two inches a year. The slower moving North American plate travels westward. In Olema Valley, near Bear Valley Visitor Center, the North American and Pacific plates grind together along the San Andreas Fault Zone. This fault zone contains many large and small faults running parallel and at odd angles to one another. Because neither plate can move freely, tremendous pressures build up. From time to time this pressure becomes too great and the surface actually moves. This is what happened in the earthquake of 1906 when the Peninsula leaped 20 feet northwestward
Point Reyes Pictures and Diagrams
Animals at Point Reyes
Rough-skinned newt Bull frogErnestin Snowy polver
Myrtle's Silver spot butterflyMountain Beaver California red-sided garter snake
Plants at Point Reyes
California poppies Purple needle
Douglas-fir
oatgrass bracken
Rock Pictures
Conglomerate
Conglomerate granitepillow lava
Bibliography
• "Point Reyes National Seashore - Ranching History at Point Reyes (U.S. National Park Service)." U.S. National Park Service - Experience Your America. Web. 28 May 2010. <http://www.nps.gov/pore/historyculture/people_ranching.htm>.
• "Point Reyes National Seashore." Wikipedia, the Free Encyclopedia. Web. 28 May 2010. <http://en.wikipedia.org/wiki/Point_Reyes_National_Seashore>.
• American Chronicle | The Anomaly of Point Reyes Geology." American Chronicle. Web. 28 May 2010. <http://www.americanchronicle.com/articles/view/30357>.
• Point Reyes National Seashore Activities and Attractions near Classic Point Reyes Lodging and Restaurant in Olema, CA." Point Reyes Lodging, Classic Point Reyes Hotel and Conference Lodge near Point Reyes National Seashore, Olema, CA. Web. 28 May 2010. <http://www.pointreyesseashore.com/seashorepark.htm>.