Pirajno,F., Ernst,R.E., Borisenko,A.S., Fedoseev,G. and Naumov,E.A.(2009): Intraplate magmatism in Central Asia and China and associated metallogeny. Ore Geology Reviews, 35, 114-136.

『中央アジアと中国のプレート内マグマ作用と関連する鉱化作用』


Abstract
 Large areas of central Asia and mainland China have been affected by intraplate anorogenic magmatism, linked to mantle activity from the Palaeoproterozoic to present day. This magmatism is manifested by layered mafic-ultramafic intrusions, flood basalts, bimodal volcanic rocks, dyke swarms, I- and A-type granitoids, alkaline complexes, carbonatites and kimberlites. In this paper we discuss a selection of these thermal events, namely East Asia Mesozoic-Cenozoic, Siberian Traps, Emeishan, Tarim (Bachu), Yakutsk and South China. Mineral systems that are associated with the Asian intraplate magmatic events include Ni-Cu-PGE in mafic-ultramafic intrisions, porphyry Cu-Mo and skarn deposits, polymetallic veins and auriferous lode deposits generally hosted in granitoids, rare earths and rare metals in alkaline complexes and diamondiferous kimberlites. The anorogenic intraplate igneous rocks originate from mantle sources or mixed mantle and crustal sources and are related, directly or indirectly, to deep mantle plumes or to asthenospheric upwellings that occur in response to lower crust and subcontinental lithosphere delamination linked to collision and subduction processes.

Keywords: Intraplate magmatism; Mantle plume; Mineral systems; Mafic-ultramafic intrusions; Alkaline complexes』

1. Introduction
2. Large igneous provinces of Central Asia and China
3. East Asia Mesozoic-Cenozoic intraplate events
 3.1. Metallogeny
4. Permo-Triassic (285-250 Ma) intraplate magmatism
 4.1. Greater Siberian Traps
  Eastern Kazakhstan
  Southeastern Altay and northwestern Mongolia
  Okhon-Selenga basin
  4.1.1. Metallogeny
  Kuznetsk Basin and Kolyvan-Tomsk fold zone (KTFZ)
 4.2. Emeishan event (260 Ma)
  4.2.1. Metallogeny
 4.3. Tarim (Bachu) event (〜280-275 Ma)
  4.3.1. Metallogeny
 4.4. Yakutsk event (380-360 Ma) Siberian Craton
  4.4.1. Metallogeny
 4.5. The 〜825-750 Ma event, South China and Alashan block
  4.5.1. Metallogeny
5. Intraplate magmatism metallogeny: discussion and conclusions
Acknowledgments
References


ホーム