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Middle–Late Triassic magmatism in the Hutouya Fe–Cu–Pb–Zn deposit, East Kunlun Orogenic Belt, NW China: Implications for geodynamic setting and polymetallic mineralization
- Source :
- Ore Geology Reviews. 113:103088
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- The Hutouya Pb–Zn mining district in the Qiman Tagh region in NW China is a zoned skarn district with inner Fe–Sn–Cu–Co ores and outer Pb–Zn skarn mineralization. Temporal coincidence of 40Ar/39Ar plateau age of ore-stage phlogopite (226.9 ± 1.5 Ma) with weighted mean LA–ICP–MS U–Pb ages of zircons (230.3 ± 3.7 and 221.6 ± 1.3 Ma) and 40Ar/39Ar plateau ages of biotite (229.6 ± 2.3 and 224.7 ± 2.6 Ma) in the spatially-associated monzogranite strongly suggest a genetic relationship between skarn formation in the Hutouya metallogenic district and intrusion of the monzogranite suite. Major and REE analyses indicate the Hutouya monzogranites are A-type granites that belong to the high-K calc–alkaline series. Hafnium isotope data are consistent with a crust–mantle mixing source. Geochemical characteristics of the Middle–Late Triassic Indosinian (235–204 Ma) granitoids associated with mineralization in the Qiman Tagh region are consistent with an origin as post-collisional, mantle-derived magmas that underplated the lower crust in the East Kunlun orogen in an extensional setting, causing lower crustal melting and subsequent mixing and assimilation that produced magmas fertile for mineralization.
- Subjects :
- Mineralization (geology)
020209 energy
Geochemistry
Geology
Genetic relationship
Crust
Skarn
02 engineering and technology
engineering.material
010502 geochemistry & geophysics
01 natural sciences
Intrusion
Geochemistry and Petrology
Magmatism
0202 electrical engineering, electronic engineering, information engineering
engineering
Phlogopite
Economic Geology
Biotite
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 01691368
- Volume :
- 113
- Database :
- OpenAIRE
- Journal :
- Ore Geology Reviews
- Accession number :
- edsair.doi...........a0a6703af2c34e2ac491a49e42fc0a84