Matches in SemOpenAlex for { <https://semopenalex.org/work/W308782111> ?p ?o ?g. }
Showing items 1 to 65 of
65
with 100 items per page.
- W308782111 endingPage "726" @default.
- W308782111 startingPage "715" @default.
- W308782111 abstract "In The Geysers--Clear Lake area of northern California, a fragmented Upper Jurassic ophiolite overlain depositionally by the Great Valley sequence is juxtaposed over deformed and metomorphosed rocks of the Franciscan assemblage along the Coast Range thrust. The basal strata of the Great Valley sequence consist of thick breccias of mafic clasts, identical in composition to the upper part of the ophiolite. These breccias and their contact relations suggest that more than 1 km of the upper part of the ophiolite was locally eroded in early Tithonian time. On the basis of their radiolarian faunas, cherts in the Franciscan assemblage below the ophiolite range in age from Late Jurassic (early Tithonian) to Late Cretaceous (early Cenomanian). Of particular significance is an individual chert body (=The Geysers chert) of this age range. The early Cenomanian radiolarians, except for two occurrences associated with pelagic limestone, are significantly younger than those previously reported from the Franciscan assemblage. The existence of a sequence of Late Jurassic to Late Cretaceous radiolarian chert places critical constraints on subduction models for emplacement of the Franciscan assemblage beneath the Coast Range ophiolite and Great Valley sequence in The Geysers--Clear Lake area. From early Tithonian to post-early Cenomanian time, themore » Franciscan assemblage received pelagic sedimentation far from any site of subduction. By other data, blueschist metamorphism of subducted Franciscanstrata also occurred during this time. The radiolarian data from The Geysers area permit a correlation with Upper Cretaceous pelagic limestones in the Laytonville area northwest of The Geysers and also imply that the Great Valley sequence was never depositionally in contact with the Franciscan assemblage.« less" @default.
- W308782111 created "2016-06-24" @default.
- W308782111 creator A5031804795 @default.
- W308782111 creator A5069094651 @default.
- W308782111 date "1978-01-01" @default.
- W308782111 modified "2023-09-26" @default.
- W308782111 title "Significance of age relations above and below upper jurassic ophiolite in the Geysers-Clear Lake region, California" @default.
- W308782111 hasPublicationYear "1978" @default.
- W308782111 type Work @default.
- W308782111 sameAs 308782111 @default.
- W308782111 citedByCount "3" @default.
- W308782111 crossrefType "journal-article" @default.
- W308782111 hasAuthorship W308782111A5031804795 @default.
- W308782111 hasAuthorship W308782111A5069094651 @default.
- W308782111 hasConcept C112764850 @default.
- W308782111 hasConcept C12294951 @default.
- W308782111 hasConcept C127313418 @default.
- W308782111 hasConcept C151730666 @default.
- W308782111 hasConcept C17409809 @default.
- W308782111 hasConcept C23923706 @default.
- W308782111 hasConcept C27543578 @default.
- W308782111 hasConcept C58097730 @default.
- W308782111 hasConcept C62074269 @default.
- W308782111 hasConcept C77928131 @default.
- W308782111 hasConceptScore W308782111C112764850 @default.
- W308782111 hasConceptScore W308782111C12294951 @default.
- W308782111 hasConceptScore W308782111C127313418 @default.
- W308782111 hasConceptScore W308782111C151730666 @default.
- W308782111 hasConceptScore W308782111C17409809 @default.
- W308782111 hasConceptScore W308782111C23923706 @default.
- W308782111 hasConceptScore W308782111C27543578 @default.
- W308782111 hasConceptScore W308782111C58097730 @default.
- W308782111 hasConceptScore W308782111C62074269 @default.
- W308782111 hasConceptScore W308782111C77928131 @default.
- W308782111 hasIssue "6" @default.
- W308782111 hasLocation W3087821111 @default.
- W308782111 hasOpenAccess W308782111 @default.
- W308782111 hasPrimaryLocation W3087821111 @default.
- W308782111 hasRelatedWork W106656250 @default.
- W308782111 hasRelatedWork W1507211622 @default.
- W308782111 hasRelatedWork W1529922159 @default.
- W308782111 hasRelatedWork W1589874531 @default.
- W308782111 hasRelatedWork W2017961280 @default.
- W308782111 hasRelatedWork W2026596341 @default.
- W308782111 hasRelatedWork W2051490677 @default.
- W308782111 hasRelatedWork W2065099063 @default.
- W308782111 hasRelatedWork W2082012363 @default.
- W308782111 hasRelatedWork W2082363326 @default.
- W308782111 hasRelatedWork W2123506187 @default.
- W308782111 hasRelatedWork W2141415396 @default.
- W308782111 hasRelatedWork W2147372741 @default.
- W308782111 hasRelatedWork W2167888127 @default.
- W308782111 hasRelatedWork W2215963576 @default.
- W308782111 hasRelatedWork W2267287299 @default.
- W308782111 hasRelatedWork W2322800101 @default.
- W308782111 hasRelatedWork W2344812912 @default.
- W308782111 hasRelatedWork W403252761 @default.
- W308782111 hasRelatedWork W997373727 @default.
- W308782111 hasVolume "6" @default.
- W308782111 isParatext "false" @default.
- W308782111 isRetracted "false" @default.
- W308782111 magId "308782111" @default.
- W308782111 workType "article" @default.