Pre- and post-Messinian deformational styles along the northern Nile Delta Basin in the framework of the Eastern Mediterranean tectonic evolution

IF 1.6 4区地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS

Marine Geophysical Research Pub Date : 2023-11-11 DOI:10.1007/s11001-023-09530-3

Ahmed Shalaby, Mohammad Abdelfattah Sarhan

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引用次数: 1

Abstract

Abstract The present work is focused on the structural deformation styles of the pre- and post-Messinian sequences of the Nile Delta Basin. The structural interpretations presented in this study shed critical insight about the evolution of the Nile Delta Basin through pre- and post-Messinian times, provides high reliability about its origin and development in the context of the Eastern Mediterranean tectonic history. The explanation for the seismic data covering three different gas fields (Baltim Field, Temsah Field and North Sinai Field) extend along the northern offshore portion of the Nile Delta Basin revealed significant variations in the deformational styles between the pre- and the post-Messinian sequences. The pre-Messinian rocks were mainly compressed in northwest-southeast direction creating folding-related compressional deformations which gradually decline eastward. The post-Messinian sequence exhibits differences in the deformational models between the examined fields. In Baltim field, it shows extensional features caused by the bulk northeast-southwest extensional deformation. However, in Temsah and North Sinai fields, this post-Messinian succession exposes north–south compressional deformation. These interpreted deformational directions are extremely well-matched with the regional structure configuration of the Nile Delta Basin and the eastern Mediterranean regions.

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东地中海构造演化框架下北尼罗河三角洲盆地前后迈西尼亚期的变形样式

摘要本文对尼罗河三角洲盆地前、后墨西尼亚期层序的构造变形样式进行了研究。本研究提出的构造解释对尼罗河三角洲盆地在前后墨西尼亚时期的演化提供了重要的见解，为其在东地中海构造史背景下的起源和发展提供了高可靠性。对沿尼罗河三角洲盆地北部海上部分延伸的三个不同气田(Baltim气田、Temsah气田和North Sinai气田)的地震数据的解释揭示了前和后墨西尼亚序列之间变形风格的显著变化。前墨西尼亚期岩石主要受西北—东南方向的挤压作用，形成与褶皱相关的挤压变形，挤压变形向东逐渐减弱。后墨西尼亚层序的变形模式在各研究区之间存在差异。巴尔提姆油田表现出由大块东北-西南伸展变形引起的伸展特征。然而，在Temsah和北西奈地区，这种后墨西尼亚序列暴露出南北挤压变形。这些解释的变形方向与尼罗河三角洲盆地和地中海东部地区的区域构造形态非常吻合。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Marine Geophysical Research 地学-地球化学与地球物理

CiteScore

2.80

自引率

14.30%

发文量

审稿时长

>12 weeks

期刊介绍： Well-established international journal presenting marine geophysical experiments on the geology of continental margins, deep ocean basins and the global mid-ocean ridge system. The journal publishes the state-of-the-art in marine geophysical research including innovative geophysical data analysis, new deep sea floor imaging techniques and tools for measuring rock and sediment properties. Marine Geophysical Research reaches a large and growing community of readers worldwide. Rooted on early international interests in researching the global mid-ocean ridge system, its focus has expanded to include studies of continental margin tectonics, sediment deposition processes and resulting geohazards as well as their structure and stratigraphic record. The editors of MGR predict a rising rate of advances and development in this sphere in coming years, reflecting the diversity and complexity of marine geological processes.