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Volume :16 Issue : 1 1989      Add To Cart                                                                    Download

Geophysics of the Arabian Gulf

Auther : WARIS E. K. WARS1

Department of Geology, University of Kuwait, P.O. Box 5969, Safat 13060, Kuwait

 

ABSTRACT

 

Among the marine basins around the Arabian Peninsula, the Arabian Gulf is geophysically the least studied. This paper describes the regional gravity field of the Gulf and reviews the limited seismic reflection data available in open files. The upper part of the sedimentary column has a simple structure and does not show any intense deformation. Continental convergence along the Zagros apparently has not yet affected these sediments. High resolution seismic records show the Holocene sediments forming a transparent unit lying over a highly eroded surface. The pre-Quaternary sediments exhibit a gentle dip and thickening northeastwards with at least two prominent unconformities of Late Cretaceous and Oligocene ages. Seismic data also suggest diapiric movement of salt beneath the sedimentary cover. The gravity field of the Arabian Gulf is dominated by the Zagros trend reflecting effects of the post-collision sedimentation and thickened mountain roots. Numerous north-trending, short wavelength anomalies superimposed on the broader pattern represent the pre-collision structures of the Arabian plate. A relative positive anomaly in the central Gulf is correlatable with a basement high.

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