Number of the records: 1
Depositional history of a condensed shallow marine reservoir succession: stratigraphy and detrital zircon geochronology of the Jurassic Sto Formation, Barents Sea
- 1.
SYSNO ASEP 0488624 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Depositional history of a condensed shallow marine reservoir succession: stratigraphy and detrital zircon geochronology of the Jurassic Sto Formation, Barents Sea Author(s) Klausen, T. G. (NO)
Müller, R. (NO)
Sláma, Jiří (GLU-S) SAI, RID, ORCID
Olaussen, S. (NO)
Rismyhr, B. (NO)
Helland-Hansen, W. (NO)Source Title Journal of the Geological Society. - : Geological Society Publishing House - ISSN 0016-7649
Roč. 175, č. 1 (2018), s. 130-145Number of pages 16 s. Publication form Print - P Language eng - English Country GB - United Kingdom Keywords binary alloys ; deposition ; erosion ; geochronology ; lead ; lead alloys ; sea level ; silicate minerals ; uranium alloys ; zircon Subject RIV DB - Geology ; Mineralogy OECD category Geology Institutional support GLU-S - RVO:67985831 UT WOS 000419796900010 EID SCOPUS 85040522432 DOI https://doi.org/10.1144/jgs2017-024 Annotation The Early to Middle Jurassic Sto Formation (Toarcian to Bajocian) was deposited in a relatively shallow (10 s of meter deep) epicontinental sea in northern Pangea and represents one of the most prolific reservoir intervals in the Barents Sea basin. It comprises a condensed, predominantly shallow marine succession characterized by long hiatuses and erosional reworking with several horizons of extraformational pebble grade conglomerate. Six distinct facies associations describe sedimentological environments ranging from transgressive, tidal, fluvial and regressive shoreface. Deposits are interpreted and correlated within three sequence stratigraphic units (SI to SIII) which reflect variations in relative sea-level during an overall transgression of the basin. Interpreted depositional systems show subtle variations in petrographic character, but provenance analyses reveal different sedimentary sources. Thirteen core samples distributed geographically and stratigraphically were analysed for detrital zircon U-Pb geochronology. Data show that the Southwestern Barents Sea Basin (SWBSB) was dominated by mixing of reworked material and coarse grained sediment supply from extrabasinal source areas including a Caledonian provenance in the southwest and a Fennoscandian provenance to the southeast. Intra-basinal erosion of underlying strata with Triassic zircon grains dominate in northern parts of the basin. Workplace Institute of Geology Contact Jana Popelková, popelkova@gli.cas.cz, Tel.: 226 800 273 Year of Publishing 2019
Number of the records: 1