Crustal Structure of Northern California
Author: Nicola Jane Godfrey
Publisher:
Published: 1997
Total Pages: 354
ISBN-13:
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Author: Nicola Jane Godfrey
Publisher:
Published: 1997
Total Pages: 354
ISBN-13:
DOWNLOAD EBOOKAuthor: Markus Dicke
Publisher:
Published: 1998
Total Pages: 188
ISBN-13:
DOWNLOAD EBOOKAuthor: Rufus Catchings
Publisher:
Published: 1983
Total Pages: 226
ISBN-13:
DOWNLOAD EBOOKAuthor: C. Prodehl
Publisher:
Published: 1979
Total Pages: 88
ISBN-13:
DOWNLOAD EBOOKA reinterpretation of seismic-refraction measurements made from 1961 to 1963 and a comparison with the crustal structure of central Europe.
Author: Wu-Nan Lin
Publisher:
Published: 1977
Total Pages: 394
ISBN-13:
DOWNLOAD EBOOKAuthor: Michael Emmanuel Pasyanos
Publisher:
Published: 1996
Total Pages: 562
ISBN-13:
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1998
Total Pages: 91
ISBN-13:
DOWNLOAD EBOOKA high level of seismicity at the Mendocino triple junction in Northern California reflects the complex active tectonics associated with the junction of the Pacific, North America, and Gorda plates. To investigate seismicity patterns and crustal structure, 6193 earthquakes recorded by the Northern California Seismic Network (NCSN) are relocated using a one-dimensional crustal velocity model. A near vertical truncation of the intense seismic activity offshore Cape Mendocino follows the strike of the Mattole Canyon fault and is interpreted to define the Pacific plate boundary. Seismicity along this boundary displays a double seismogenic layer that is attributed to interplate activity with the North America plate and Gorda plate. The interpretation of the shallow seismogenic zone as the North America - Pacific plate boundary implies that the Mendocino triple junction is situated offshore at present. Seismicity patterns and focal mechanisms for events located within the subducting Gorda pl ate are consistent with internal deformation on NE-SW and NW-SE trending rupture planes in response to north-south compression. Seismic sections indicate that the top of the Gorda plate locates at a depth of about 18 Km beneath Cape Mendocino and dips gently east-and southward. Earthquakes that are located in the Wadati-Benioff zone east of 236{sup o}E show a change to an extensional stress regime indicative of a slab pull force. This slab pull force and scattered seismicity within the contractional forearc region of the Cascadia subduction zone suggest that the subducting Gorda plate and the overriding North America plate are strongly coupled. The 1992 Cape Mendocino thrust earthquake is believed to have ruptured a blind thrust fault in the forearc region, suggesting that strain is accumulating that must ultimately be released in a potential M 8+ subduction earthquake.
Author: John Stafford Knapp
Publisher:
Published: 1982
Total Pages: 700
ISBN-13:
DOWNLOAD EBOOKAuthor: Tom Parsons
Publisher:
Published: 2002
Total Pages: 145
ISBN-13: 9780607986983
DOWNLOAD EBOOKAuthor: Stephan Mueller
Publisher: Elsevier
Published: 2013-10-22
Total Pages: 379
ISBN-13: 1483257053
DOWNLOAD EBOOKDevelopments in Geotectonics 8: The Structure of the Earth's Crust Based on Seismic Data covers the papers presented at an International Upper Mantle Committee (lUMC) symposium called ""Crustal Structure Based on Seismic Data"", held on July 30-31, 1971. The book focuses on the structure, composition, and characteristics of the earth's crust. The selection first offers information on the crustal structure of Central and Southeastern Europe by data of explosion seismology; structure of the earth's crust on the territory of the U.S.S.R.; and seismic studies of low-velocity layers and horizontal inhomogeneities within the crust and upper mantle on the territory of the U.S.S.R. The text also takes a look at the deep seismic investigations in the Baikal rift zone and crust of the arctic seas of Eurasia. Discussions focus on peculiarities of crustal structure, structure of the uppermost mantle, and method of investigation. The publication takes a look at the crustal structure of Japan as derived from explosion seismic data; crustal structure in the Matsushiro earthquake swarm area; and Soviet seismic studies of the earth's crust in the Pacific Ocean during the International Upper Mantle Project. The selection is a dependable source of information for readers interested in the structure of the earth's crust.