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Geological Features and Pospecting Model of the Pb‐Zn Deposits Occurring in Abag Region along the Sino‐Mongolian Border
Author(s) -
LI Qiangfeng,
NIE Fengjun
Publication year - 2014
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.12383_10
Subject(s) - beijing , chinese academy of sciences , china , library science , citation , mineral resource classification , history , political science , geology , geochemistry , archaeology , computer science
The Pb-Zn deposits occurring in Abag region along the Sino-Mongolian border, which is located at south of the Sino-Mongolian border in middle-east of Inner Mongolia, and the central geographic coordinates is 114°15′-115°15′ 00′′E, 45°15′00′′N. The deposit concentrated region is about 80km in length and 30km wide, which has many medium to small scale Pb-Zn-Cu-Bi(Ag-Au)deposits and Cu, Pb, Zn, Sn, Bi mineralization spot such as Hardat Tolgoi deposit, Gaoerqi deposit, Moruogeqin deposit, Ganzhuershande deposit and Azar hada deposit. Pb-Zn (Ag, Au) deposit has produced in Niqiuhe formation, and has same ore-forming geological background and same type deposit. Exposed strata in the area were Tongshan formation, Niqiuhe formation, Baoligaomiao formation and Abaga formation. Intrusive rocks in the area were mainly Late Carboniferous and Early Permian Syenogranite and feldspar granite. The Late Carboniferous Syenogranite contacted with the Niqiuhe formation by a irregular contact zone, the inner and outer contact zones showed lead-zinc mineralization. Niqiuhe formation was developed with folds, complex structural features. Angles of late filling ore bodies were different in different tectonic positions. NE, NW and EW direction faults in this area were developed, different direction faults can be filled by late ore fluid resulted in the formation of ore bodies. Basalt which covered ore bodies was distributed in a wide range.