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April 18, 2006, will mark the 100th anniversary of the “Great San Francisco Earthquake.” On that day in 1906, the earth ruptured for about 300 miles (500 km) along the San Andreas Fault in northern California, both on land and where it extends offshore. The earthquake and fires that followed caused catastrophic damage to cities and towns throughout the San Francisco Bay region and had a dramatic impact on the culture and history of California. The event also initiated national interest in the study of earthquakes and disaster prevention.

Although the very mention of the San Andreas Fault instills concerns about great earthquakes, perhaps less thought is given to the glorious and scenic landscapes the fault has been responsible for creating. The San Andreas Fault extends across California for nearly 800 miles between its southern terminus beneath the Salton Sea to where it runs offshore at Cape Mendicino in the north. Along its path, the fault cuts through desert landscapes, grasslands, forested coastal mountain ranges, rural rangeland, and even some urban areas. Along much of its route, the fault cuts through land held in the public trust, including national parks, national forests, open-space, local parks, water districts and reservoirs, and is locally overlain by roads, bridges, dams, homes, and other manmade features.

This field guide to the San Andreas Fault in the San Francisco Bay region not only presents detailed information on the geologic diversity of the landscape but also describes aspects of the cultural history and past and ongoing land-management practices along the fault zone. The San Andreas Fault is a prominent natural landmark feature in Point Reyes National Seashore, a unit within the National Park System. National parks are observatories for the natural world, and whether it be a mountain range, volcanoes, a river canyon, or a great fault system, geology is an underlying theme for most national parks. A primary mission of the National Park Service is to provide visitors with useful information and guided interpretations about the natural and cultural history of the landscape.

The National Park Service relies on the organizations like the U.S. Geological Survey to provide scientific information to help make informed decisions and to help educate the public. This field guide is an example of collaboration between the two Federal agencies. Our hope is that this guidebook will help enrich public understanding and encourage exploration of our natural and cultural heritage.

Don Neubacher
Park Superintendent
Point Reyes National Seashore
National Park Service ... Read more

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The book presents an introduction to the mechanical genesis of tectonic faults in the brittle crust of the Earth. In the first chapters mechanical concepts of rock (such as brittleness, stresses in a discontinuum, effective stress, buoyancy, poro-thermo-elasticiy, fracture modes and the corresponding failure and slip conditions) are discussed. The book focuses on the critical re-assessment of Coulomb-Mohr's theory of sliding deformation in rocks. The book concludes with a discourse on similarity and self-similarity of fault structures and a critical examination of the feasibility of scaled model experiments. Mathematical formalism is restricted to a minimum and is replaced, wherever possible, by the extremely useful graphic method of Mohr's stress circle which is introduced in a separate chapter. The book includes illustrative geological and geotechnical examples. ... Read more

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This digital document is an article from Atlantic Geology, published by Atlantic Geoscience Society on November 1, 2003. The length of the article is 5795 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

Citation Details
Title: Structural transect through Silurian turbidites of the Fredericton Belt southwest of Fredericton, New Brunswick: the role of the Fredericton Fault in late Iapetus convergence.
Author: Adrian F. Park
Publication: Atlantic Geology (Refereed)
Date: November 1, 2003
Publisher: Atlantic Geoscience Society
Volume: 39Issue: 3Page: 227(11)

Distributed by Thomson Gale ... Read more

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Chapters: Chaman Fault, Geological Survey of Pakistan, Chitarwata Formation, Iranian Plate, Tectonics Zones of Pakistan, Stratigraphic Names in Pakistan. Source: Wikipedia. Pages: 22. Not illustrated. Free updates online. Purchase includes a free trial membership in the publisher's book club where you can select from more than a million books without charge. Excerpt: The Chaman Fault is a major, active geological fault in Pakistan and Afghanistan that runs for over 850 km. Tectonically, it is actually a system of related geologic faults that separates the Eurasian Plate from the Indo-Australian Plate. It is a terrestrial, primarily transform, left-lateral strike-slip fault. The slippage rate along the Chaman fault system as the Indo-Australian Plate moves northward (relative to the Eurasian Plate) has been estimated at 10 mm/yr or more. In addition to its primary transform aspect, the Chaman fault system has a compressional component as the edge of the Indian Plate is subducted under the edge of the Eurasian Plate. This type of plate boundary is sometimes called a transpressional boundary. From the south, the Chaman fault starts at the triple junction where the Arabian Plate, the Eurasian Plate and the Indo-Australian Plate meet, which is just off the Makran Coast of Pakistan. The fault tracks northeast across Balochistan and then north-northeast into Afghanistan, runs just to the west of Kabul, and then northeastward across the right-lateral-slip Herat fault, up to where it merges with the Pamir fault system north of the 38º parallel. The Ghazaband and Ornach-Nal faults are often included as part of the Chaman fault system. South of the triple junction, where the fault zone lies undersea and extends southwest to approximately 10ºN 57ºE, it is known as the Owen Fracture Zone. While there is general agreement that the fault is slipping at a rate of at least 10 mm/yr, there is a report of volcanic rocks in Pakistan dated to ...More: http://booksllc.net/?id=23809814 ... Read more

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Reflects advances in understanding of fold and thrust belts. The book presents results of research, discussing techniques in interpreting the geometry and kinematics of thrust structures; causes and mechanisms of deformation; and regional styles and tectonics of selected thrust belts. ... Read more