Download A Streetcar to Subduction and Other Plate Tectonic Trips by by Clyde Wahrhaftig PDF

By Clyde Wahrhaftig

ISBN-10: 0875902340

ISBN-13: 9780875902340

ISBN-10: 1118664817

ISBN-13: 9781118664810

Published via the yankee Geophysical Union as a part of the Special courses Series.

It is tough to be ignorant of the earth in San Francisco. outfitted on rocky hills, town is surrounded on 3 facets through bay and ocean that may be noticeable from approximately all over inside of it. Precipitous cliffs face the town from around the Golden Gate, and the skyline to the north, east, and south is ruled by means of mountains. Occasional tremors from the San Andreas and comparable faults close by remind us that the earth here's energetic. till lately the rocks so abundantly uncovered in San Francisco baffled geologists. jumbled in with no obvious order and missing seen fossils, they defied rationalization. the idea of plate tectonics has replaced all that. we've got a proof for the starting place of the rocks of San Francisco, even though it is whatever yet simple.

Content:
Chapter 1 journey 1. A Streetcar to Subduction (pages 10–17):
Chapter 2 journey 2. To castle Mason and Subducted Sandstone (pages 17–19):
Chapter three journey three. Baker's seashore and fortress element: a visit to Melange and Serpentine (pages 19–25):
Chapter four journey four. A Sedentary Survey of the constitution of town (With facet journeys Afoot) (pages 25–38):
Chapter five journey five. Marin Headlands: Pillow Basalt and Chert (pages 38–45):
Chapter 6 journey 6. a ship journey to the Blueschist Facies: Angel Island and the Metamorphosed Franciscan (pages 45–55):
Chapter 7 journey 7. After Subduction is Over: A BART journey to a remodel Fault (pages 55–63):

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Additional resources for A Streetcar to Subduction and Other Plate Tectonic Trips by Public Transport in San Francisco

Example text

Beyond Baker, Buena Vista Park is to the south. The flower children attracteddrug pushers and other predatorsin the 1970's,and the vibes turned bad. The district is now being revitalized as a healthy and interestingshoppingarea. No. 6 turns left on Masonic, past some of the most interesting Queen Anne housesin the city (on the left), jogs on Frederick and Clayton to Parnassus,and at the east end of the University of California Medical Center it passesa chert outcrop (on the left). North (right) of the medicalcenter are spectacular viewsof the Golden Gate Bridge and the Marin County Mountains.

Its presentpopulationis about 700,000. By 1853 the city extended about a mile westand southof its point of origin, and by 1870 it covered the area east of Van Ness Avenue. Streets were laid out half way acrossthe peninsulaand through the Missiondistrict. By 1895, building had spread four mileswestand south from the original settlement. The earthquakeand fire of 1906 destroyedmost of the area east of Van Ness and north of Mission Bay, but the city wasquickly rebuilt and by 1915 extended to the ocean on both sides of Golden Gate Park.

It is in fault contactwith beyond expose only landslidedebrisfor 300 m. A wedgeof basaltabout (4) is chert west of the fault. The thin bedsof chert 230 m thick makesup the dark-greencliffsbetween and shale are in tight chevronfoldswith thebridgeand KirbyCoveandthinsnorthwestward saddles,sandstoneand shale underlie the valleys 40 lengthsand amplitudesof 2-4 m. Chert extendsto (5) but is not tightly folded. The easternmost basaltexposuresare thoroughly weathered. Justbeyond (5), take the dirt road d()wnhill to Kirby (love.

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A Streetcar to Subduction and Other Plate Tectonic Trips by Public Transport in San Francisco by Clyde Wahrhaftig


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