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利用重力数据研究埃塞俄比亚西北部高原的地下构造线理

Investigating subsurface structural lineaments of the northwest Ethiopian plateau using gravity data.

作者信息

Kassa Muluken

机构信息

Department of Physics, College of Natural and Computational Sciences, Debre Tabor University, Debre Tabor, Ethiopia.

出版信息

Heliyon. 2024 Jul 31;10(15):e35520. doi: 10.1016/j.heliyon.2024.e35520. eCollection 2024 Aug 15.

DOI:10.1016/j.heliyon.2024.e35520
PMID:39170304
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11336693/
Abstract

This study provides advanced knowledge of the subsurface structural characteristics of the northwest Ethiopian plateau. With its complex geologic structure, the Northwest Ethiopian plateau is being studied for density boundary mapping using geophysical methods. However, its application to the mapping of geological structures such as faults and contacts which appear as lineaments in gravity data has not been studied so far. Thus, the goal of this research is to increase our understanding of the subsurface structural lineaments and their depth beneath the Ethiopian plateau in the northwest using global gravity model GGMplus2013. These subsurface structural lineaments and their depths were investigated using the LTHG, EHGA, and tilt depth techniques. The results indicate that the main subsurface structural lineaments identified in the study region are dipping between 3.2 and 8 km and are developing in the NE-SW, N-S, E-W, and NW-SE orientations.

摘要

本研究提供了埃塞俄比亚西北部高原地下结构特征的前沿知识。埃塞俄比亚西北部高原地质结构复杂，目前正在使用地球物理方法对其进行密度边界测绘研究。然而，到目前为止，尚未研究将其应用于重力数据中表现为线性构造的断层和接触带等地质构造的测绘。因此，本研究的目标是利用全球重力模型GGMplus2013，加深我们对埃塞俄比亚西北部高原地下结构线性构造及其深度的理解。利用LTHG、EHGA和倾斜深度技术对这些地下结构线性构造及其深度进行了研究。结果表明，研究区域内识别出的主要地下结构线性构造倾角在3.2至8公里之间，呈东北-西南、北-南、东-西和西北-东南方向发育。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d214/11336693/1b319716edd6/gr8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d214/11336693/d52b89961a11/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d214/11336693/5bbec625000a/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d214/11336693/24f3e9dfe42e/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d214/11336693/800fc281b42b/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d214/11336693/a74826ea5846/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d214/11336693/8b9d7ce5c1d7/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d214/11336693/650a759d16a5/gr7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d214/11336693/1b319716edd6/gr8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d214/11336693/d52b89961a11/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d214/11336693/5bbec625000a/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d214/11336693/24f3e9dfe42e/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d214/11336693/800fc281b42b/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d214/11336693/a74826ea5846/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d214/11336693/8b9d7ce5c1d7/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d214/11336693/650a759d16a5/gr7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d214/11336693/1b319716edd6/gr8.jpg

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Imaging Lithospheric Discontinuities Beneath the Northern East African Rift Using -to- Receiver Functions.利用远震到接收函数成像东非大裂谷北部下方的岩石圈间断面
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