Detrital garnets as provenance and correlation indicators in North Sea reservoir and stones

Saved in:
Authors:Morton, A. C.
Author Affiliations:Primary:
Br. Geol. Surv., Keyworth, United Kingdom
Other:
Shell UK Explor. & Prod., United Kingdom
Volume Title:Petroleum geology of north west Europe
Volume Authors:Brooks, James, editor; Glennie, Kenneth W.
Source:p.991-995; 3rd conference on Petroleum geology of North West Europe, London, United Kingdom, Oct. 26-29, 1986, edited by James Brooks and Kenneth W. Glennie. Publisher: Graham & Trotman, London, United Kingdom. ISBN: 0-86010-703-5
Publication Date:1987
Note:In English. 15 refs.; illus. incl. strat. cols., sketch maps
Summary:The value of heavy-mineral analysis in the study of provenance and correlation in North Sea reservoir sandstones is severely restricted by diagenetic processes, which have caused partial or total dissolution of many key mineral species. The problem may be counteracted by the study of the variations shown by a single, preferably stable, mineral. The garnet group is potentially useful in this respect, being widespread in North Sea reservoir sandstones, relatively stable in diagenesis and having a wide compositional range. Initial studies of garnet geochemistry by electron microprobe have shown that the technique is widely applicable in solving problems of provenance and correlation in North Sea reservoirs. Three examples are given: 1) the correlation and differentiation of sand units within the Middle Jurassic Brent group of the northern North Sea; 2) the distinction of two individual submarine fan systems within the Palaeocene Forties formation of the central North Sea; 3) a comparison of Upper Jurassic and Triassic sandstones of the Gannet area, central North Sea, demonstrating their close similarity consistent with the view that the Upper Jurassic was largely sourced by local Triassic rocks. (Author's abstract) [E.R.R.]
Subjects:Accessory minerals; Bajocian; Brent Group; Cenozoic; Clastic rocks; Correlation; Detrital sedimentation; Diagenesis; Economic geology; Electron probe data; Energy sources; Etive Formation; Garnet group; Heavy minerals; Indicators; Jurassic; Mesozoic; Middle Jurassic; Nesosilicates; Ness Formation; Orthosilicates; Paleocene; Paleogene; Provenance; Reservoir rocks; Sandstone; Sedimentary rocks; Sedimentation; Silicates; Solution; Source rocks; Tertiary; Atlantic Ocean; North Atlantic; North Sea; Forties Formation; Gannet
Abstract Numbers:88M/6316
Record ID:1988059880
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
Tags: Add Tag
No Tags, Be the first to tag this record!
Be the first to leave a comment!
You must be logged in first