Author: Publisher:
ISBN:
Category : Faults (Geology)
Languages : en
Pages : 90
Book Description
Paleoseismic and Archaeologic Investigation of the Northern San Gregorio Fault, Seal Cove, San Mateo County, California
Author: U.S. Geological Survey Open-file Report
Author: National Earthquake Hazards Reduction Program, Summaries of Technical Reports Volume XXXV
Author: Publisher:
ISBN:
Category : Earthquake hazard analysis
Languages : en
Pages : 472
Book Description
Earth Sciences and Archaeology
Author: Paul GoldbergPublisher: Springer Science & Business Media
ISBN: 1461511836
Category : Social Science
Languages : en
Pages : 519
Book Description
This volume brings together contributions from an experienced group of archaeologists and geologists whose common objective is to present thorough and current reviews of the diverse ways in which methods from the earth sciences can contribute to archaeological research. Many areas of research are addressed here, including artifact analysis and sourcing, landscape reconstruction and site formation analysis, soil micromorphology and geophysical exploration of buried sites.
Paleoseismic and Geoarchaeologic Investigations of the Northern San Andreas Fault, Fort Ross State Historic Park, California
Author: Publisher:
ISBN:
Category : Archaeological geology
Languages : en
Pages : 42
Book Description
Paleoseismic Investigations of the Northern San Andreas Fault at the Vedanta Site, Marin County, California
Author: Nelson Timothy HallPublisher:
ISBN:
Category : Faults (Geology)
Languages : en
Pages : 144
Book Description
Paleoseismic Investigation of the Northern Strand of the Nephi Segment of the Wasatch Fault Zone at Santaquin, Utah
Author: Christopher B. DuRossPublisher: Utah Geological Survey
ISBN: 1557917892
Category : CD-ROMs
Languages : en
Pages : 39
Book Description
This CD contains a 33 page report, appendix, and plate. This study presents the results of fault-trench excavations near Santaquin, Utah, and includes discussion of (1) previous paleoseismic investigations on the Nephi segment, (2) the geology of the Santaquin trench site and excavations (3) paleoseismic results, including the timing of the most recent surface-faulting earthquake, fault displacement and slip rate, and surface-faulting earthquake recurrence and (4) implications for the segmentation of the southern Wasatch fault zone.
Paleoseismic Studies of the Northern San Andreas Fault at Vedanta Marsh Site, Olema, California
Author: Hongwei ZhangPublisher:
ISBN:
Category : Faults (Geology)
Languages : en
Pages : 686
Book Description
The northern San Andreas fault (SAF) ruptured in 1906 and generated the Great San Francisco Earthquake. This study involves collection and interpretation of paleoseismic data from the North Coast segment of the norther SAF at Vedanta marsh, Olema, California, to determine the timing of prehistoric large earthquakes, coseismic slips, and earthquake recurrence on this fault segment. These important parameters will test the existing earthquake models and add new data to the San Francisco Bay Area earthquake probability analysis. Late Holocene sediments deposited at Vedanta marsh preserve a continuous record of prehistoric earthquakes. Excavations into the marsh provided exposure of the sediments across the SAF zone. Well-defined marsh stratigraphy and abundant in situ organic material allow the determination of the first long, high-resolution, event-by-event record of earthquakes for the northern SAF. Evidence for twelve earthquakes, including the 1906 earthquake, have been identified from the main fault zone based on fault outward splays, fault upward termination, fissures, colluvial wedges, and soft-sediment deformation. All of these features occurred since the deposition of a unit that is approximately 3000 years old. The age of eleven pre-1906 seismic events are well bracketed by radiocarbon dates and age modeling using the OxCal radiocarbon analysis program. The average recurrence interval at the Vedanta site is ~ 250 years. However, individual recurrence intervals are quite irregular, ranging from as short as 53 years to as long as 605 years. From comparisons with other sites on the northern SAF, I interpret four pre-1906 events may have ruptured the entire North Coast segment, including earthquakes in the following ranges: AD 1670 - 1740; AD 1290 - 1380; AD 1100 - 1165; and AD 650 -710. A buried paleochannel had been right-laterally offset 7.8 - 8.3 m by coseismic slip of the 1906 and the penultimate earthquakes. Historical record of the 1906 coseismic slip measured near the excavation site was ~ 5 m. If we assume 5 m of 1906 slip at the marsh site, then the coseismic slip of the penultimate event is between 2.8 - 3.3 m. Timing (AD 1670 - 1740) and coseismic slip of the penultimate event indicate that the northern SAF may rupture in sequences of closely timed earthquakes on shorter segments, and does not support the assumption that the fault has failed as a single, long rupture similar to 1906 in mid 1600s.
Paleoseismic Investigations of the San Andreas Fault on the San Francisco Peninsula, California: Text and figures
Author: Nelson Timothy HallPublisher:
ISBN:
Category : Earthquake hazard analysis
Languages : en
Pages : 178
Book Description
Paleoseismology of an Apparent Offset Stream, San Andreas Fault, Doda Ranch, Northern California
Author: Christopher J. CrosbyPublisher:
ISBN:
Category : Earthquakes
Languages : en
Pages : 56
Book Description