The Neogene stratigraphy of the glaciated European margin from Lofoten to Porcupine

Preface ] Introduction ] Unified Stratigraphy ] Pre-Neogene Framework ] Miocene to Lower Pliocene ] Lower Pliocene To Holocene ] High-Resolution Stratigraphy ] Key Geoseismic Sections ]

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WP1 - NORTH SEA FAN-VōRING

Geoseismic panel 3

This high-resolution seismic profile across the VÝring Plateau shows the distribution, geometry and thickness of the Cenozoic sedimentary succession overlying the Eocene basalts that form the VÝring Marginal High. The calibration with ODP site 642 is indicated. Additionally, a correlation to DSDP site 338 is also shown, although the provisional nature of the latter has precluded its incorporation in the WP1 Neogene stratigraphic-range chart (Fig. 11).

In this profile, the Kai Formation varies from about 70Ė350ms TWTT. It displays an internal seismic signature of low- to medium-amplitude reflectors that onlap the southwestern part of the VÝring Marginal High. They also show evidence of downlap onto Oligocene strata on top of the high, where they also exhibit a mounded form. Significantly, perhaps, in the area of DSDP site 338, the Base Kai Unconformity appears erosive. These characteristics suggest a deep-water contouritic origin for the Kai Formation.

The overlying Naust Formation has a uniform thickness of about 100ms TWTT on this part of the VÝring Plateau, and drapes the underlying relief. Consequently, the base of the Naust Formation here appears relatively conformable, although low-angle truncation cannot be discounted. This is the most distal, hemipelagic part of the prograding wedge of glacigenic sediments that has built out from the Mid Norwegian mainland. 

 


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Geoseismic Panel 1 ] Geoseismic Panel 2 ] [ Geoseismic Panel 3 ]

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Preface ] Introduction ] Unified Stratigraphy ] Pre-Neogene Framework ] Miocene to Lower Pliocene ] Lower Pliocene To Holocene ] High-Resolution Stratigraphy ] Key Geoseismic Sections ]


This page was Last updated 17 September 2002