陕西煤炭2026，Vol.45Issue(5)：98-103,6.DOI:10.20120/j.cnki.issn.1671-749x.2026.0516
马家滩矿区李新庄勘查区延安组聚煤及其构造特征分析
Coal accumulation and structural characteristics of Yan'an Formation in Lixinzhuang exploration area of Majiatan Mining District
摘要
Abstract
Located at the junction of the leading edge of the thrust belt and the rear thrust belt on the western margin of the Ordos Basin,Li Xinzhuang exploration area is characterized by well-developed faults,intense tectonic activities,complex strata deformation with severe repetition,and very complex geological structure.Based on the new drilling and high-precision 2D seismic data of this area in recent years,we believe that the sedimentary environment of the Yan'an Formation in the exploration area can be divided into two major categories:shallow lake delta system and fluvial sedimentary system,with the former being dominant.The exploration area is located in the middle section of the Majiataan structural belt and at the leading edge of the thrust and reverse fault system.The lateral faults play a regulatory role in the shortening of the strata,and the floor faults are the bridges for the replacement of faults and folds.Analyzing the coal accumulation characteristics and structural features of the Li Xinzhuang exploration area not only helps to understand the unique thrust and nappe system of the Majiataan area and even the entire thrust belt on the western margin of the Ordos Basin,but also has important significance for clarifying the distribution of underground mineral resources in this area and their orderly development and utilization.关键词
李新庄勘查区/煤炭资源/聚煤特征/构造特征Key words
Lixinzhuang exploration area/coal resources/coal accumulation characteristics/structural features分类
天文与地球科学引用本文复制引用
赵刚,杜斌,张小五,吴天才,杨小兵,虎晓金..马家滩矿区李新庄勘查区延安组聚煤及其构造特征分析[J].陕西煤炭,2026,45(5):98-103,6.基金项目
2025年度宁夏回族自治区新一轮找矿突破战略行动项目(D6400-20250106000003) （D6400-20250106000003）
