EVIDENCE OF PERMO‐CARBONIFEROS GLACIATION IN THE BASAL MURBAT SANDSTONE FORMATION, SOUTHERN REGION, SULTANATE OF OMAN
作者:
H.A. Qidwai,
M.I. Khalifa,
Khalid A. Ba‐mkhalif,
期刊:
Journal of Petroleum Geology
(WILEY Available online 1988)
卷期:
Volume 11,
issue 1
页码: 81-88
ISSN:0141-6421
年代: 1988
DOI:10.1111/j.1747-5457.1988.tb00802.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
The most massive basal diamictite of the Murbat Sandstone Formation exhibits many sedimentary features which indicate its subglacial deposition. Some of the most important features are: (1)straited and grooved sandstone slivers within the diamictete;(2)striated and faceted clasts; (3)small stratified sandstone lenses within the diamictite; (4)“dropstones” or “out‐of‐size clasts” in the shale; and (5) the large lateraal and vertical extent of the diamictite.The overlying sequence of the Murbat Sandstone Formation consits of an alternating succession of conglaomerate and sandstone followed by silstone and shale, whose sedimentary structures, however, suggest their deposition in deeper‐water basins.The Murbat Sandstone Formation has been assigned to various ages ranging from Infra‐Cambrian to Ordovician by different workers, in view of its isolated occurence and the absence of flora and fauna. The Metal Mining Agency of Japan, however, has dated the Murbat Sandstone Formation as Permo‐Carboniferous, as it uncomfomably overlies Lower Carboniferous dikes of the crystalline Basement. The dikes have been dated b
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