Geophysical Interpratation of Part of the Tuz Gölü Basin

Abstract

N.V. Turkse Shell carried out extensive exploration in the Tuz Gölü basin during 1970-1972. The area of geophysical activity extended east-west across the basin. The interpretation of 422 km of six-fold coverage reflection data is presented here as unmigrated time contour maps, and as a suite of interpreted VA R time-sections. In 1970, an experimental reconnaissance reflection survey was run over selected parts of the area. In 1971, this was followed by a reconnaissance reflection survey which was based on uphole surveys made at 5 km intervals along each line before production shooting started. In the western part of Tuz Gölü, where piercement structures had been observed on the early seismic lines, detail seismic lines were shot in 1972. The gravity method was also used to delineate probable salt diapir trends. This gravity data have been compiled with the previous Esso and M.T.A. data. The gravity data of the western Tuz Gölü were processed by Shell in The Hague, using the polynomial method of residual-regional separation. The relationship between some negative gravity anomalies, the indications of piercement structures and areas of topographic depression was investigated. The results of two aeromagnetic surveys carried out by Gulf and M.T.A. (Mineral Research and Exploration Institute) are also discussed in this paper.

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