Matches in SemOpenAlex for { <https://semopenalex.org/work/W1995418746> ?p ?o ?g. }
- W1995418746 endingPage "247" @default.
- W1995418746 startingPage "233" @default.
- W1995418746 abstract "As the Mendocino triple junction (MTJ) moves northwards up the North American margin, the tectonic regime changes from subduction to strike-slip. For the first few million years following triple junction migration, the San Andreas Fault system consists of several strike-slip faults distributing deformation over a region ~ 150 km wide. This same region is expected to be affected by a slab gap beneath North America, created by the northward removal of the subducting Gorda plate, and into which asthenospheric mantle is thought to rise to crustal depths. The onshore and offshore Mendocino Triple Junction Seismic Experiment (MTJSE) provides a continuous seismic velocity–reflectivity cross-section across the deforming zone from the Pacific ocean basin to the eastern edge of the California Coast Ranges. The accretionary complex rocks that make up most of the crustal thickness are underlain by a 5–10 km thick high-velocity(6.4–7.2 km s− 1) layer at the base of the crust that extends from the Pacific to at least 50 km, and probably 90 km east of the San Andreas Fault. The top of the lower crustal layer deepens from 7 km beneath the Pacific ocean basin at the west end of the profile to 23 km at the east end by a gentle (5°–10°) eastward dip punctuated by abrupt offsets at the San Andreas and Maacama fault zones. At each fault the top of the lower crust is offset by up to 4 km, down to the east. The Moho is similarly deformed beneath the faults, although by only 2 km. Such localized deformation of the Moho implies that these two strike-slip faults penetrate through the entire crust to the upper mantle. Good agreement between seismic velocity and seismic reflectivity in the vicinity of the faults gives confidence in these results, although details of the offset beneath the San Andreas Fault are better resolved than those under the Maacama Fault. Seismic velocities in the upper mantle show only a small change along the profile, from 8.1 km s− 1 beneath the Pacific to about 7.9 km s− 1 beneath the Coast Ranges. We infer that upwelling of asthenosphere into the slab gap is limited laterally, or a lithospheric lid is present in the slab gap by 2 Ma. Gravity data and crustal density structure show that most of the margin width is in local Airy isostasy with the changes in crustal thickness near the strike-slip faults corresponding closely to changes in surface topography. The crustal blocks defined by the strike-slip faults appear to be independently in isostatic equilibrium, provided that the mantle beneath the Coast Ranges has a somewhat lower density than that beneath the Pacific plate. The densities in the Coast Range upper mantle are consistent with limited temperature elevation, suggesting that the asthenospheric mantle is present beneath the depth of seismic energy penetration from our survey." @default.
- W1995418746 created "2016-06-24" @default.
- W1995418746 creator A5020200335 @default.
- W1995418746 creator A5025116322 @default.
- W1995418746 date "2000-01-01" @default.
- W1995418746 modified "2023-09-27" @default.
- W1995418746 title "Lithospheric evolution in the wake of the Mendocino triple junction: structure of the San Andreas Fault system at 2 Ma" @default.
- W1995418746 cites W1965333404 @default.
- W1995418746 cites W1976323751 @default.
- W1995418746 cites W1977633890 @default.
- W1995418746 cites W1986445528 @default.
- W1995418746 cites W1987625030 @default.
- W1995418746 cites W1988181283 @default.
- W1995418746 cites W1994146495 @default.
- W1995418746 cites W2003622563 @default.
- W1995418746 cites W2008695492 @default.
- W1995418746 cites W2013100935 @default.
- W1995418746 cites W2018500273 @default.
- W1995418746 cites W2023183048 @default.
- W1995418746 cites W2024953052 @default.
- W1995418746 cites W2026635643 @default.
- W1995418746 cites W2028077371 @default.
- W1995418746 cites W2033112114 @default.
- W1995418746 cites W2035364481 @default.
- W1995418746 cites W2041944985 @default.
- W1995418746 cites W2053609724 @default.
- W1995418746 cites W2053700473 @default.
- W1995418746 cites W2054820818 @default.
- W1995418746 cites W2059102360 @default.
- W1995418746 cites W2062854128 @default.
- W1995418746 cites W2075566610 @default.
- W1995418746 cites W2083548076 @default.
- W1995418746 cites W2084836053 @default.
- W1995418746 cites W2093315690 @default.
- W1995418746 cites W2094625254 @default.
- W1995418746 cites W2098328952 @default.
- W1995418746 cites W2109572825 @default.
- W1995418746 cites W2123271949 @default.
- W1995418746 cites W2133071671 @default.
- W1995418746 cites W2144542802 @default.
- W1995418746 cites W2150159126 @default.
- W1995418746 cites W2152818636 @default.
- W1995418746 cites W2155409809 @default.
- W1995418746 cites W2168959606 @default.
- W1995418746 cites W2171309373 @default.
- W1995418746 cites W2482734072 @default.
- W1995418746 doi "https://doi.org/10.1046/j.1365-246x.2000.00010.x" @default.
- W1995418746 hasPublicationYear "2000" @default.
- W1995418746 type Work @default.
- W1995418746 sameAs 1995418746 @default.
- W1995418746 citedByCount "29" @default.
- W1995418746 countsByYear W19954187462012 @default.
- W1995418746 countsByYear W19954187462013 @default.
- W1995418746 countsByYear W19954187462014 @default.
- W1995418746 countsByYear W19954187462015 @default.
- W1995418746 countsByYear W19954187462018 @default.
- W1995418746 countsByYear W19954187462019 @default.
- W1995418746 crossrefType "journal-article" @default.
- W1995418746 hasAuthorship W1995418746A5020200335 @default.
- W1995418746 hasAuthorship W1995418746A5025116322 @default.
- W1995418746 hasBestOaLocation W19954187461 @default.
- W1995418746 hasConcept C106973953 @default.
- W1995418746 hasConcept C119477230 @default.
- W1995418746 hasConcept C127313418 @default.
- W1995418746 hasConcept C154200439 @default.
- W1995418746 hasConcept C165205528 @default.
- W1995418746 hasConcept C16942324 @default.
- W1995418746 hasConcept C175551986 @default.
- W1995418746 hasConcept C2776698055 @default.
- W1995418746 hasConcept C2777992645 @default.
- W1995418746 hasConcept C2777994876 @default.
- W1995418746 hasConcept C2778282194 @default.
- W1995418746 hasConcept C2991754643 @default.
- W1995418746 hasConcept C58097730 @default.
- W1995418746 hasConcept C67236022 @default.
- W1995418746 hasConcept C77928131 @default.
- W1995418746 hasConcept C8058405 @default.
- W1995418746 hasConceptScore W1995418746C106973953 @default.
- W1995418746 hasConceptScore W1995418746C119477230 @default.
- W1995418746 hasConceptScore W1995418746C127313418 @default.
- W1995418746 hasConceptScore W1995418746C154200439 @default.
- W1995418746 hasConceptScore W1995418746C165205528 @default.
- W1995418746 hasConceptScore W1995418746C16942324 @default.
- W1995418746 hasConceptScore W1995418746C175551986 @default.
- W1995418746 hasConceptScore W1995418746C2776698055 @default.
- W1995418746 hasConceptScore W1995418746C2777992645 @default.
- W1995418746 hasConceptScore W1995418746C2777994876 @default.
- W1995418746 hasConceptScore W1995418746C2778282194 @default.
- W1995418746 hasConceptScore W1995418746C2991754643 @default.
- W1995418746 hasConceptScore W1995418746C58097730 @default.
- W1995418746 hasConceptScore W1995418746C67236022 @default.
- W1995418746 hasConceptScore W1995418746C77928131 @default.
- W1995418746 hasConceptScore W1995418746C8058405 @default.
- W1995418746 hasIssue "1" @default.
- W1995418746 hasLocation W19954187461 @default.
- W1995418746 hasOpenAccess W1995418746 @default.
- W1995418746 hasPrimaryLocation W19954187461 @default.
- W1995418746 hasRelatedWork W1529429252 @default.