Document Type : Original Research Paper


1 Ph.D.‌ Student‌, Faculty‌ of Earth Science, Shahid Beheshti University,‌ Tehran,‌ Iran

2 Professor, Faculty of Earth Science,‌ Shahid ‌Beheshti University,‌ Tehran,‌ Iran

3 Professor, Research Institute for Earth Science, Geological Survey of Iran (GSI), Tehran, Iran

4 P.h.D., Exploration Directorate of National Oil Company, Tehran, Iran


Understanding the history of uplift and folding in an area helps inferring the history of hydrocarbon genesis,‌migration ‌and‌ trapping and reducing exploratory drilling risks.‌Thermal model along with structural cross sections help understanding of this history and future plannings for new exploration. In this paper we have used 3Dseismic reflective lines and geological‌ maps to construct a regional balanced cross section and restore it in several stages. Combining of this cross section and a thermal model produced using vitrinite reflectance and apatite fission track, the history of exhumation and regional erosion is evaluated. Based on the results,‌‌unlike the Hormuz Series,‌the thickness of the Paleozoic sequence is equal throughout the region. This shows that the sedimentary-tectonic events have been the same in this period. The apatite fission track data indicate that the average time of rocks cooling is between14and24 million years ago‌ (Late Oligocene-Middle Miocene).‌‌Based on the burial history graph, exhumation rate of the basement decrease from High Zagros to Abadan plain that show the basement in the northern part is involved in deformation earlier than in the southern part of the region. This involvement has affected the formation of structure,‌change of the sedimentary facies and the regional erosion pattern.


Main Subjects

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