About This Item
- Full TextFull Text(subscription required)
- Pay-Per-View PurchasePay-Per-View
Purchase Options Explain
Share This Item
The AAPG/Datapages Combined Publications Database
Journal of Sedimentary Research (SEPM)
Abstract
The Development of a Lower Jurassic Carbonate Tidal Flat, Central High Atlas, Morocco. 1: Sedimentary History
Christopher J. Burgess (2), Christopher W. Lee
ABSTRACT
During the late Triassic and early Jurassic a shallow sea transgressed westwards along the High Atlas Trough. At the western extremity of this trough moderate thicknesses of carbonate tidal flat and shallow subtidal sediments accumulated. Analysis of these deposits has indicated a complex mosaic of facies analagous to Holocene sediments in the Persian Gulf and Shark Bay, Western Australia, and has allowed the preparation of paleogeographic and paleosalinity reconstructions which show a complex of inlets in which salinities became restricted. Sedimentation in the trough was controlled by a series of ancient faults trending ENE-WSW which moved in response to stresses created by plate movements in the Atlantic and Tethyan Oceans.
Generally arid climatic conditions increased salinities in intertidal areas and restricted faunal diversity. Sabkha conditions prevailed onshore, while algal mats and large bivalves flourished in intertidal areas. Limited coral, oolite and skeletal grainstones interfingered with mud in the subtidal areas, and in the Upper Pliensbachian Opisoma sp. formed lensoid reefs.
Pay-Per-View Purchase Options
The article is available through a document delivery service. Explain these Purchase Options.
Watermarked PDF Document: $14 | |
Open PDF Document: $24 |