Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1130/B31524.1 |
Geology of the Don Manuel igneous complex, central Chile: Implications for igneous processes in porphyry copper systems | |
Gilmer, Amy K.1; Sparks, R. S. J.1; Rust, Alison C.1; Tapster, Simon2; Webb, Adam D.3; Barfod, Dan N.4 | |
2017-07-01 | |
发表期刊 | GEOLOGICAL SOCIETY OF AMERICA BULLETIN |
ISSN | 0016-7606 |
EISSN | 1943-2674 |
出版年 | 2017 |
卷号 | 129 |
文章类型 | Article |
语种 | 英语 |
国家 | England; Chile; Scotland |
英文摘要 | The Don Manuel igneous complex and associated porphyry copper mineralization in the Andean Cordillera of central Chile demonstrate similarities between intrusive complexes associated with porphyry copper deposits and arc volcanoes that generate porphyritic volcanics. The Don Manuel igneous complex intrusions progressed from quartz monzonite through rhyolite and biotite tonalite to intermediate porphyritic and basaltic andesite dikes, which intrude the older units. Mineralization is associated with the biotite tonalite and intermediate porphyries, which also contain the greatest abundance of mafic enclaves. Zoning patterns within plagioclase phenocrysts suggest that the later intermediate porphyries comprise a hybridized suite formed by magma mixing. New zircon U-Pb ages and whole-rock Ar-Ar ages indicate that the Don Manuel igneous complex was emplaced between ca. 4 and 3.6 Ma. The time scale for the episodic intrusion of the Don Manuel igneous complex units is similar to observed episodicity of eruption and degassing events in active arc volcanoes. Observations from the Don Manuel igneous complex are consistent with the close spatial and temporal association of mineralization with episodic intrusion and interaction between silicic and mafic magmas during emplacement. The observations are also consistent with the hypothesis that mafic magma provides a source of sulfur for porphyry copper deposit formation. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000405373200010 |
WOS关键词 | SOUTHERN VOLCANIC ZONE ; MAFIC ALKALINE MAGMAS ; FLAT-SLAB SEGMENT ; TORRES-DEL-PAINE ; CU-MO DEPOSIT ; EL-TENIENTE ; ARC MAGMAS ; CENTRAL ANDES ; STRUCTURAL EVOLUTION ; SULFUR-RICH |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/24815 |
专题 | 地球科学 |
作者单位 | 1.Univ Bristol, Sch Earth Sci, Wills Mem Bldg, Bristol BS8 1RJ, Avon, England; 2.British Geol Survey, Nat Environm Res Council, Isotope Geosci Lab, Nottingham NG12 5GG, England; 3.BHP Billiton, Cerro El Plomo 6000, Santiago, RM, Chile; 4.Scottish Univ Environm Res Ctr, Nat Environm Res Council, Argon Isotope Facil, E Kilbride G75 0QF, Lanark, Scotland |
推荐引用方式 GB/T 7714 | Gilmer, Amy K.,Sparks, R. S. J.,Rust, Alison C.,et al. Geology of the Don Manuel igneous complex, central Chile: Implications for igneous processes in porphyry copper systems[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2017,129. |
APA | Gilmer, Amy K.,Sparks, R. S. J.,Rust, Alison C.,Tapster, Simon,Webb, Adam D.,&Barfod, Dan N..(2017).Geology of the Don Manuel igneous complex, central Chile: Implications for igneous processes in porphyry copper systems.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,129. |
MLA | Gilmer, Amy K.,et al."Geology of the Don Manuel igneous complex, central Chile: Implications for igneous processes in porphyry copper systems".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 129(2017). |
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