Structure-thermal evolution and erosion pattern in Central Zagros

Farahzadi, Esmail; Alavi, Seyed Ahmad; Ghassemi, Mohammad Reza; Sherkati, Shahram

doi:10.22071/gsj.2021.269573.1880

Document Type : Original Research Paper

Authors

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

https://doi.org/10.22071/gsj.2021.269573.1880

Abstract

Abstract
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.

Keywords

20.1001.1.10237429.1401.32.1.7.7

Main Subjects

Tectonics

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Scientific Quarterly Journal of Geosciences

Structure-thermal evolution and erosion pattern in Central Zagros

References

References

Volume 32, Issue 1 - Serial Number 123
Spring
March 2022
Pages 57-72

Structure-thermal evolution and erosion pattern in Central Zagros

References

References

Volume 32, Issue 1 - Serial Number 123SpringMarch 2022Pages 57-72

Volume 32, Issue 1 - Serial Number 123
Spring
March 2022
Pages 57-72