Skip to Main Content
Book Chapter

Type II Shelf Margin, Høgsnyta, Norway: Attached Slope Turbidite System

By
Piret Plink-Björklund
Piret Plink-Björklund
Earth Sciences Centre, Geology, Göteborg University
,
Gothenburg, Sweden:Present address:Colorado School of Mines, Golden, Colorado, USA
Search for other works by this author on:
Ron Steel
Ron Steel
Department of Geological Sciences, University of Texas
,
Austin, Texas, USA
Search for other works by this author on:
Published:
January 01, 2008

Abstract

Høgsnyta is one of the l-by-5-km (0.6-by-3.0-mi)-scale mountainside outcrops that expose shelf-margin clinoform complexes in the Eocene Central Basin of Spitsbergen. The shelf-margin clinoforms have been documented in two approximately 30-km (18-mi)- long transects: Grøndalen-Reindalen transect and Van Keulenfjorden transect. The Høgsnyta shelf margin at Reindalen is exposed on a dip-parallel, steep mountainside as a wedge-shaped turbidite sandstone body. It is 70 m (230 ft) thick at the shelf edge, thins downslope, and pinches out above the base of slope, approximately 5 km (3 mi) from the shelf edge. The height of the clinoform complex of approximately 200 m (656 ft) gives a direct estimate for the paleowater depth. The outcrop also exposes older marine mudstones below the studied shelf-margin clinoform complex. The shelf includes younger clinoform complexes, as well as a younger coastal-plain succession above the shelf-margin complex. The Høgsnyta turbidite system is a slope-turbidite apron, attached to a fluvial, shelf-edge delta system. Fluvial distributary channels fed into delta-front sheets or into slope channels; the slope channels terminated with slope lobes on the upper and middle slope, or with turbidite sheets on the lower slope. The internal architecture of the Høgsnyta shelf-margin clinoform complex reflects deposition in a fourth-order sea-level cycle that includes: (1) shelf-margin progradation during the falling stage, (2) lower slope aggradation during the early lowstand, (3) intralowstand flooding back onto the shelf edge, and (4) shelf-margin progradation during the late lowstand. The Spitsbergen data shows that sands were distributed beyond the shelf edge during falling stage

You do not currently have access to this article.

Figures & Tables

Contents

AAPG Studies in Geology

Atlas of Deep-Water Outcrops

Tor H. Nilsen
Tor H. Nilsen
Desceased
Search for other works by this author on:
Roger D. Shew
Roger D. Shew
University of North Carolina
Wilmington, North Carolina
Search for other works by this author on:
Gary S. Steffens
Gary S. Steffens
Shell International E&P
Houston, Texas
Search for other works by this author on:
Joseph R. J. Studlick
Joseph R. J. Studlick
Maersk Oil America Inc.
Houston, Texas
Search for other works by this author on:
American Association of Petroleum Geologists
Volume
56
ISBN electronic:
9781629810331
Publication date:
January 01, 2008

GeoRef

References

Related

Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal