Matches in SemOpenAlex for { <https://semopenalex.org/work/W2083574074> ?p ?o ?g. }
Showing items 1 to 53 of
53
with 100 items per page.
- W2083574074 abstract "The continental rise, within the 200-mi (320 km) economic zone, represents both the largest accumulation of terrigenous sediment on this planet and perhaps the largest unexploited hydrocarbon repository. Several models have been presented for the origin of the rise; in the 1950s and 1960s, R. Dietz, M. Kay, C. Drake, M. Ewing, and others suggested a model of pyroclastics and turbidity-current deposition which produced a thick accumulation (eugeosyncline) of alternating coarse- and fine-grained sediment. This view of continental-rise sedimentation was proposed prior to the discovery that deep thermohaline circulation could play a significant geologic role at abyssal depths. This latter concept was first hypothesized by the writer, who presented a model for along-slope fine-sediment dispersal driven by thermohaline circulation. This view held that turbidity currents inject sediment into contour-following, near-bottom currents; only fine-grained material is wafted parallel with contours, whereas the coarser turbidite material largely bypasses the continental rise and is deposited on the abyssal plains. This concept is supported by the results of Leg 11 of the DSDP. The present sedimentary environment of the lower continental rise (3.5 to 5 km deep) in the western North Atlantic is now known to be dominated by vigorous near-bottom, contour-following currents (i.e., contour currents). Dense water originating in the Labrador, Norwegian, and Irminger Seas flows south and west through various fracture zones until it reaches the North American continental margin, where it is constrained to flow against the massive sedimentary apron of the continental rise. The obvious implication of the contour-current concept for petroleum interest is that there would be little or no deposition on the continental rise of sediments End_Page 467------------------------------ suitable for forming reservoir rock during the time that deep circulation has been an important process in the western North Atlantic. This process is thought to have begun about 50 m.y.B.P. There would be deposition only of fine-grained, relatively impermeable, potential source beds. It is concluded that Cenozoic sediments of the continental rise, at least off the east coast of North America, may not be a likely source for future hydrocarbon recovery. A few deep holes into the continental rise (preceded by complete seismic surveys) are needed to assess the potential of the underlying, deeply buried Paleozoic section. End_of_Article - Last_Page 468------------" @default.
- W2083574074 created "2016-06-24" @default.
- W2083574074 creator A5000690717 @default.
- W2083574074 date "1979-01-01" @default.
- W2083574074 modified "2023-10-14" @default.
- W2083574074 title "Sedimentation Processes and Hydrocarbon Potential of Continental Rise off North America: ABSTRACT" @default.
- W2083574074 doi "https://doi.org/10.1306/c1ea5a1c-16c9-11d7-8645000102c1865d" @default.
- W2083574074 hasPublicationYear "1979" @default.
- W2083574074 type Work @default.
- W2083574074 sameAs 2083574074 @default.
- W2083574074 citedByCount "1" @default.
- W2083574074 crossrefType "journal-article" @default.
- W2083574074 hasAuthorship W2083574074A5000690717 @default.
- W2083574074 hasConcept C114793014 @default.
- W2083574074 hasConcept C127313418 @default.
- W2083574074 hasConcept C151730666 @default.
- W2083574074 hasConcept C17409809 @default.
- W2083574074 hasConcept C178790620 @default.
- W2083574074 hasConcept C185592680 @default.
- W2083574074 hasConcept C201867031 @default.
- W2083574074 hasConcept C2777207669 @default.
- W2083574074 hasConcept C2816523 @default.
- W2083574074 hasConcept C29941650 @default.
- W2083574074 hasConcept C77928131 @default.
- W2083574074 hasConceptScore W2083574074C114793014 @default.
- W2083574074 hasConceptScore W2083574074C127313418 @default.
- W2083574074 hasConceptScore W2083574074C151730666 @default.
- W2083574074 hasConceptScore W2083574074C17409809 @default.
- W2083574074 hasConceptScore W2083574074C178790620 @default.
- W2083574074 hasConceptScore W2083574074C185592680 @default.
- W2083574074 hasConceptScore W2083574074C201867031 @default.
- W2083574074 hasConceptScore W2083574074C2777207669 @default.
- W2083574074 hasConceptScore W2083574074C2816523 @default.
- W2083574074 hasConceptScore W2083574074C29941650 @default.
- W2083574074 hasConceptScore W2083574074C77928131 @default.
- W2083574074 hasLocation W20835740741 @default.
- W2083574074 hasOpenAccess W2083574074 @default.
- W2083574074 hasPrimaryLocation W20835740741 @default.
- W2083574074 hasRelatedWork W1584270427 @default.
- W2083574074 hasRelatedWork W1973193541 @default.
- W2083574074 hasRelatedWork W1980766330 @default.
- W2083574074 hasRelatedWork W2023007887 @default.
- W2083574074 hasRelatedWork W2102153055 @default.
- W2083574074 hasRelatedWork W2149661997 @default.
- W2083574074 hasRelatedWork W2159679146 @default.
- W2083574074 hasRelatedWork W2321972690 @default.
- W2083574074 hasRelatedWork W2326818302 @default.
- W2083574074 hasRelatedWork W2330289240 @default.
- W2083574074 hasVolume "63" @default.
- W2083574074 isParatext "false" @default.
- W2083574074 isRetracted "false" @default.
- W2083574074 magId "2083574074" @default.
- W2083574074 workType "article" @default.