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Mantle Branch Structure in the South‐Central Segment of the Da Hinggan Mts., Inner Mongolia and Its Ore‐controlling Role
Author(s) -
Shuyin NIU,
Aiqun SUN,
Baode WANG,
Fengjun NIE,
Sihong JIANG,
Ji'an SHAO,
Lijun GUO,
Jianming LIU
Publication year - 2009
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/j.1755-6724.2009.00137.x
Subject(s) - mantle (geology) , geology , mineralization (soil science) , geochemistry , tectonics , orogeny , inner mongolia , mesozoic , seismology , geomorphology , structural basin , china , geography , archaeology , soil science , soil water
Mantle branch structure is the third tectonic unit of multiple evolution of a mantle branch. It is not only the main mechanism of intercontinental orogeny, but also an important ore‐forming and ore‐control structure. Studies on geotectonic evolution, regional geological characteristics and oreforming and ore‐control structures have shown that since the Mesozoic the Da Hinggan Mts. region has entered a typical intercontinental orogenic stage, and it is closely related to mantle branch activities. The south‐central segment of the Da Hinggan Mts. is a typical mantle branch structure and possesses obvious magmatic‐metamorphic complexes in the core, detachment slip beds in the periphery and overlapped fault depression basins. Moreover, all of these are the principal factors leading to ore formation and ore control in the region. This paper also further explores the mechanism of mineralization in the south‐central segment of the Da Hinggan, summaries the rules of mineralization, puts forward the models of mineralization and points out future ore‐exploring orientation.