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98843 |
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Date: February 26, 2025 at 07:34:53
From: sher, [DNS_Address]
Subject: Ortigalita Fault-question |
URL: https://pubs.geoscienceworld.org/gsa/gsabulletin/article-abstract/84/11/3547/186415/Tesla-Ortigalita-Fault-Coast-Range-Thrust-Fault?redirectedFrom=PDF |
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Could this fault be capable of producing a magnitude 7.9 earthquake?
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Responses:
[98844] |
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98844 |
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Date: February 26, 2025 at 15:55:50
From: jordan, [DNS_Address]
Subject: Re: Ortigalita Fault-question |
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The Tesla-Ortigalita fault is a fault zone in
California's central Coast Ranges that's considered
capable of producing a major earthquake.
Location:
Located in the northeastern Diablo Range
About eight miles west of Los Banos
Approximately 25 miles from the western end of the PG&E
Cressey-Gallo 115 kV Power Line Project site
Fault type: A right-lateral strike-slip fault, Part of
the Ortigalita fault zone, and A major Holocene fault.
Earthquake potential:
Considered capable of generating a 6 to 7 Richter
Magnitude earthquake
Has a recurrence interval of 2,000 to 5,000 years
Sections of the fault have been active within the last
15,000 years
Other names:
The Tesla-Ortigalita fault has also been referred to as
the Ortigalita Thrust
The fault zone is characterized by predominantly dextral
late Pleistocene and Holocene strike-slip
Related information:
The fault contacts the Franciscan Complex and the Great
Valley sequence
The fault truncates older fault surfaces of the Coast
Range thrust-fault system
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