A geophysical study of the granites and the sedimentary basins of the Xanthi area (N. Greece) |
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| Authors: | G N Tsokas G C Christofides C Papakonstantinou |
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| Institution: | (1) Geophysical Laboratory, Aristotelian University of Thessaloniki, 54006 Thessaloniki, Greece;(2) Department of Mineralogy-Petrology and Economic Geology, Faculty of Geology, Aristotelian University of Thessaloniki, 54006 Thessaloniki, Greece;(3) Richardson Oil Company, 1700 Lincoln St., 80203 Denver, Colorado, USA |
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| Abstract: | Intrusive features of varying size can be interpreted from the aeromagnetic map of the Xanthi area in N. Greece.The Xanthi pluton, which outcrops north of the city of Xanthi, seems to have the shape of a truncated pyramid. This feature has relatively large areal extent and reaches an approximate depth of 7 km. Another, relatively large magnetic body is buried under the sediments at the estuary of the Nestos River.3-D models of several smaller intrusions were constructed and the produced effect was compared to the observed. Some of these intrusions seem to be detached branches of the large Xanthi pluton.The basement in the outer part of the basin of the Nestos River seems to be buried at about 4 km depth. This figure is obtained by the  Multiple Source Werner Deconvolution estimates and it is in agreement with the results of former geophysical studies and deep industrial boreholes.A 3-D model of the Xanthi-Komotini basin suggests that this basin is about 0.4 km deep at its southern part. The depth at its northern boundary is about 1.8 km while the boundary itself is formed by the large Kavala-Xanthi-Komotini fault.The Tertiary basin of the Nestos River and the observed magmatism are consistent with the idea of an older extensional tectonic regime in the area. |
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| Keywords: | Rhodope Xanthi N Greece Nestos M S W D |
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