海洋地质前沿2026，Vol.42Issue(6)：1-10,10.DOI:10.16028/j.1009-2722.2025.177
里海地区重力场及断裂构造特征研究
Gravity field and fault structure characteristics of the Caspian Sea Region
摘要
Abstract
To explore the characteristics of fault structures in the Caspian Sea region,the Bouguer gravity anom-aly(BGA)data from the region were systematically processed,based on which a BGA map of the area was pro-duced.In addition,using edge detection technology for potential fields,corresponding edge recognition informa-tion was acquired.The Bouguer and residual gravity anomalies were analyzed in detail based on previous geolo-gical and geophysical researches,and the regional fault structure framework and tectonic units in the Caspian Sea area were clarified.Results show that the gravity anomalies in the Caspian Sea region exhibit distinct zonation.Bounded by the Nebitdag-Makhachkala-Kizlyar line,the northeastern part of the boundary shows relatively minor macroscopic gravity variations,whereas the western and southern parts of the boundary exhibit more intense changes in gravity field.Based on the regional gravity anomaly features,eight first-order faults(F1-F8)in the Caspian Sea region were recognized.Showing substantial scale and continuity,these faults exert a fundamental control on the tectonic framework of the Caspian Sea region.Five first-order tectonic units were delineated:the Russian Platform,the Ural Fold System,the South Turan Fold System,the Scythian Fold System,and the Tethy-an Fold System.This work provided a geological and geophysical support for petroleum exploration in the Caspi-an Sea region.关键词
中亚地区/里海/重力异常/断裂构造/构造单元Key words
Central Asia/Caspian Sea/gravity anomaly/fault structure/tectonic unit分类
海洋科学引用本文复制引用
高静雯,张春灌,马杰,张波,陆启松,李峰塬..里海地区重力场及断裂构造特征研究[J].海洋地质前沿,2026,42(6):1-10,10.基金项目
国家自然科学基金(42172224) （42172224）
