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Sökning: onr:"swepub:oai:DiVA.org:nrm-1924" > Provenance of Trias...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003688naa a2200397 4500
001oai:DiVA.org:nrm-1924
003SwePub
008161123s2016 | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-19242 URI
0247 a https://doi.org/10.1016/j.marpetgeo.2016.10.0052 DOI
040 a (SwePub)nrm
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Fleming, E.J.4 aut
2451 0a Provenance of Triassic sandstones on the southwest Barents Shelf and the implication for sediment dispersal patterns in northwest Pangaea.
264 1b Elsevier BV,c 2016
338 a print2 rdacarrier
520 a Thick Triassic siliciclastic units form major reservoir targets for hydrocarbon exploration on the Barents Shelf; however, poor reservoir quality, possibly associated with variation in provenance, remains a key risk factor in the area. In this study, sandstone dispersal patterns on the southwest Barents Shelf are investigated through petrographic and heavy mineral analysis, garnet and rutile geochemistry and zircon U-Pb geochronology. The results show that until the Early Norian Maximum Flooding Surface, two contrasting sand types were present: (i) a Caledonian Sand Type, characterised by a high compositional maturity, a heavy mineral assemblage dominated by garnet and low chrome-spinel:zircon (CZi) values, predominantly metapelitic rutiles and mostly Proterozoic and Archaean detrital zircon ages, interpreted to be sourced from the Caledonides, and (ii) a Uralian Sand Type, characterised by a low compositional maturity, high CZi values, predominantly metamafic rutiles and Carboniferous zircon ages, sourced from the Uralian Orogeny. In addition, disparity in detrital zircon ages of the Uralian Sand Type with contiguous strata on the northern Barents Shelf reveals the presence of a Northern Uraloid Sand Type, interpreted to have been sourced from Taimyr and Severnaya Zemlya. As such, a coincidental system is inferred which delivered sand to the Northern Barents Shelf in the late Carnian/early Norian. Following the Early Norian Maximum Flooding Surface, a significant provenance change occurs. In response to Late Triassic/Early Jurassic hinterland rejuvenation, supply from the Uralian Orogen ceased and the northern Scandinavian (Caledonian) source became dominant, extending northwards out on to the southwest Barents Shelf. The data reveal a link between reservoir quality and sand type and illustrate how provenance played an important role in the development of clastic reservoirs within the Triassic of the Barents Shelf.
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskapx Geologi0 (SwePub)105042 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Geology0 (SwePub)105042 hsv//eng
653 a The changing Earth
653 a Den föränderliga jorden
7001 a Flowerdew, Michael4 aut
7001 a Smyth, H.R.4 aut
7001 a Scott, R.A.4 aut
7001 a Morton, A.C.4 aut
7001 a Omma, J.E.4 aut
7001 a Frei, D.4 aut
7001 a Whitehouse, Martin J.,d 1962-u Naturhistoriska riksmuseet,Enheten för geovetenskap,Nordsim4 aut0 (Swepub:nrm)martwhit
7102 a Naturhistoriska riksmuseetb Enheten för geovetenskap4 org
7730 t Marine and Petroleum Geologyd : Elsevier BVg 78, s. 516-535q 78<516-535x 0264-8172x 1873-4073
8564 u http://www.sciencedirect.com/science/article/pii/S0264817216303439
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-1924
8564 8u https://doi.org/10.1016/j.marpetgeo.2016.10.005

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