Matches in SemOpenAlex for { <https://semopenalex.org/work/W189968382> ?p ?o ?g. }
- W189968382 abstract "Seismic refraction data from the Lesser Antilles Seismic Project of April 1972 are analysed to delineate the crustal layers beneath the Lesser Antilles Island Arc, Grenada Trough, Tobago Trough and Barbados Ridge. First arrival travel times from 23 of the LASP recording stations are analysed by the classical reversed-profile, modified ‘plus-minus’ and time-term methods of interpretation. Two crustal layers of velocities about 6.2km s(^-1) and 7.0km s(^-1) are found beneath the Lesser Antilles ridge. It is suggested that the upper layer is of largely andesitic composition and that the lower layer represents the old oceanic crust which has been intruded with basic magma from the upper mantle beneath the arc. The presence of two crustal layers is common to most island arcs. Shear-wave velocities and Poisson's ratio for the upper crust beneath the arc are estimated, and these suggest that no large magma chambers are present above about 5km. The crust of the Tobago Trough is shown to consist of a layer of velocity 7.0km s (^-1), overlain by a thick pile of sediments and ? metamorphics, This structure shows closer affinities to 'Atlantic' crust than to 'Caribbean' crust. The results from the Grenada Trough are shown to be consistent with previous interpretations of the crustal structure. These results indicate that there may have been an earlier period of subduction at a site some distance west of the present Lesser Antilles subduction zone. This may be related to the possible formation of the Aves Ridge as an active island arc in late Cretaceous – early Tertiary times." @default.
- W189968382 created "2016-06-24" @default.
- W189968382 creator A5035691827 @default.
- W189968382 date "1974-01-01" @default.
- W189968382 modified "2023-09-26" @default.
- W189968382 title "A seismic refraction survey of the earth's crust beneath the lesser antilles" @default.
- W189968382 cites W1969072660 @default.
- W189968382 cites W1973565608 @default.
- W189968382 cites W1975370972 @default.
- W189968382 cites W1978866236 @default.
- W189968382 cites W1983094364 @default.
- W189968382 cites W1987194631 @default.
- W189968382 cites W1989459712 @default.
- W189968382 cites W1989796301 @default.
- W189968382 cites W1991156767 @default.
- W189968382 cites W1994492813 @default.
- W189968382 cites W2004763235 @default.
- W189968382 cites W2005419403 @default.
- W189968382 cites W2005451324 @default.
- W189968382 cites W2011380707 @default.
- W189968382 cites W2021582824 @default.
- W189968382 cites W2023754185 @default.
- W189968382 cites W2024732062 @default.
- W189968382 cites W2026247016 @default.
- W189968382 cites W2032394574 @default.
- W189968382 cites W2039078861 @default.
- W189968382 cites W2043546840 @default.
- W189968382 cites W2046944338 @default.
- W189968382 cites W2051156251 @default.
- W189968382 cites W2051362795 @default.
- W189968382 cites W2056259282 @default.
- W189968382 cites W2056938420 @default.
- W189968382 cites W2066711037 @default.
- W189968382 cites W2069225122 @default.
- W189968382 cites W2071539591 @default.
- W189968382 cites W2072894233 @default.
- W189968382 cites W2072929359 @default.
- W189968382 cites W2076871586 @default.
- W189968382 cites W2079962154 @default.
- W189968382 cites W2084530568 @default.
- W189968382 cites W2086516157 @default.
- W189968382 cites W2087396156 @default.
- W189968382 cites W2099259100 @default.
- W189968382 cites W2107706395 @default.
- W189968382 cites W2111606901 @default.
- W189968382 cites W2120954655 @default.
- W189968382 cites W2123810804 @default.
- W189968382 cites W2123965239 @default.
- W189968382 cites W2129254529 @default.
- W189968382 cites W2133065510 @default.
- W189968382 cites W2133303366 @default.
- W189968382 cites W2137844457 @default.
- W189968382 cites W2144945637 @default.
- W189968382 cites W2145847545 @default.
- W189968382 cites W2158705317 @default.
- W189968382 cites W2158851292 @default.
- W189968382 cites W2161775724 @default.
- W189968382 cites W2166026905 @default.
- W189968382 cites W2166167505 @default.
- W189968382 cites W2168053212 @default.
- W189968382 cites W2291089043 @default.
- W189968382 cites W2402778113 @default.
- W189968382 cites W2413111754 @default.
- W189968382 cites W2476767164 @default.
- W189968382 cites W2495689540 @default.
- W189968382 cites W2562751932 @default.
- W189968382 cites W622642992 @default.
- W189968382 cites W3113137291 @default.
- W189968382 hasPublicationYear "1974" @default.
- W189968382 type Work @default.
- W189968382 sameAs 189968382 @default.
- W189968382 citedByCount "0" @default.
- W189968382 crossrefType "dissertation" @default.
- W189968382 hasAuthorship W189968382A5035691827 @default.
- W189968382 hasConcept C111461898 @default.
- W189968382 hasConcept C127313418 @default.
- W189968382 hasConcept C139719470 @default.
- W189968382 hasConcept C151730666 @default.
- W189968382 hasConcept C154200439 @default.
- W189968382 hasConcept C162324750 @default.
- W189968382 hasConcept C165205528 @default.
- W189968382 hasConcept C2776698055 @default.
- W189968382 hasConcept C32239851 @default.
- W189968382 hasConcept C32277403 @default.
- W189968382 hasConcept C58097730 @default.
- W189968382 hasConcept C63379926 @default.
- W189968382 hasConcept C67236022 @default.
- W189968382 hasConcept C77928131 @default.
- W189968382 hasConcept C8058405 @default.
- W189968382 hasConceptScore W189968382C111461898 @default.
- W189968382 hasConceptScore W189968382C127313418 @default.
- W189968382 hasConceptScore W189968382C139719470 @default.
- W189968382 hasConceptScore W189968382C151730666 @default.
- W189968382 hasConceptScore W189968382C154200439 @default.
- W189968382 hasConceptScore W189968382C162324750 @default.
- W189968382 hasConceptScore W189968382C165205528 @default.
- W189968382 hasConceptScore W189968382C2776698055 @default.
- W189968382 hasConceptScore W189968382C32239851 @default.
- W189968382 hasConceptScore W189968382C32277403 @default.
- W189968382 hasConceptScore W189968382C58097730 @default.