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| Titel |
The Jurassic of Svalbard, Sedimentology, Stratigraphy and Paleontology |
| VerfasserIn |
Maayke Koevoets, Øyvind Hammer |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250087075
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| Publikation (Nr.) |
 EGU/EGU2014-1089.pdf |
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| Zusammenfassung |
| During the Mesozoic the landmass now known as Svalbard drifted from 45oN to 65oN. The
average global temperature was significantly higher, disabling the formation of icecaps at the
poles, resulting in a higher sea-level. At the time the location now known as Svalbard was
covered by a shallow ocean and mostly marine, organic rich, black shales, interrupted by
possibly deltaic sediments were deposited. These sediments are rich in invertebrate fossils. A
general description of the Agardhfjellet formation, spanning the middle to upper Jurassic,
was made by Dypvik in 1991. Wierzbowski (1989) described some ammonites in detail from
the Kimmeridgian. It is not known if the fauna extends further up or down in the
formation. Since 2004 the Museum of Natural History of Oslo has been active in
Spitsbergen Svalbard. Extensive and detailed sedimentological and stratigraphic
research was never conducted as the focus lay on vertebrate fossils. A detailed
sedimentological analysis, description and correlation to other Jurassic Formations
(such as the Kimmeridge Shales, Hekkingen Formation and draupne Formation)
is essential to better understand the circumstances where the black organic-rich
shales (a highly potential source rock) were deposited in and to be able to predict
their occurrences. Included in this description is taxonomy, taphonomy and the
stratigraphic development of invertebrate fauna to pinpoint the age of the sediments. |
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