Orogenic-Type Polymetallic Mineralization Associated with Multistage Orogenesis in Northern North China Plate
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Beschreibung
This book focuses on the geological characteristics and genesis of several base metal deposits in the northern margin of the North China Plate, namely the Bainaimiao Cu-Au-Mo, the Huogeqi Cu-Pb-Zn, the Dongshengmiao Zn-Pb-Cu and the Jiashengpan Zn-Pb deposits. These deposits have geological and geochemical affinities with orogenic-type deposits, such as shear zone-controlled mineralization and carbon-rich low-salinitiy ore-forming fluids, and are characterized by multistage ore-forming histories. Remobilization of the pre-enriched (stratabound or porphyry-type) base metals took place as responses to orogenesis and metamorphism, leading to metal redistribution and the formation of orogenic-type orebodies. The formation of orogenic-type base metal deposits is enigmatic, and the case studies presented in this book provide insights into understanding the genesis of this type of deposits. In particular, pre-enrichment of base metals seems to be important, in terms of preconditioning for later shear zone-controlled mineralization, since base metals are believed to have limited solubilities in the low-salinity ore-fluids.
This book focuses on the geological characteristics and genesis of several base metal deposits in the northern margin of the North China Plate, namely the Bainaimiao Cu-Au-Mo, the Huogeqi Cu-Pb-Zn, the Dongshengmiao Zn-Pb-Cu and the Jiashengpan Zn-Pb deposits. These deposits have geological and geochemical affinities with orogenic-type deposits, such as shear zone-controlled mineralization and carbon-rich low-salinitiy ore-forming fluids, and are characterized by multistage ore-forming histories. Remobilization of the pre-enriched (stratabound or porphyry-type) base metals took place as responses to orogenesis and metamorphism, leading to metal redistribution and the formation of orogenic-type orebodies. The formation of orogenic-type base metal deposits is enigmatic, and the case studies presented in this book provide insights into understanding the genesis of this type of deposits. In particular, pre-enrichment of base metals seems to be important, in terms of preconditioning forlater shear zone-controlled mineralization, since base metals are believed to have limited solubilities in the low-salinity ore-fluids.
Focuses on the genesis of orogenic-type base metal deposits, which is poorly understood compared to other deposit types Broadens understanding of the base metal mineralization in the context of the multistage orogenesis in this area, from continent-arc collision, to continent-continent collision, to intraplate crustal shortening Shows importance of base metal pre-enrichment and syn-tectonic remobilization through case studies
Autor*in
Wenbo Li
Themen in »Orogenic-Type Polymetallic Mineralization Associated with Multistage Orogenesis in Northern North China Plate«
Inner Mongolia North China Craton Central Asian Orogenic Belt Paleo-Asian Ocean Shear Zone Metamorphic Fluid Multistage Mineralization Accretionary Orogeny Intraplate Orogeny Yanshanian Tectonism