干旱区生态环境知识资源中心(Arid): The Hydrothermal Alteration of the Cordon de Inacaliri Volcanic Complex in the Framework of the Hidden Geothermal Systems within the Pabelloncito Graben (Northern Chile)

Arid

DOI	10.3390/min11111279
	The Hydrothermal Alteration of the Cordon de Inacaliri Volcanic Complex in the Framework of the Hidden Geothermal Systems within the Pabelloncito Graben (Northern Chile)
	Maza, Santiago Nicolas; Collo, Gilda; Morata, Diego; Cuna-Rodriguez, Carolina; Taussi, Marco; Renzulli, Alberto
通讯作者	Morata, D (corresponding author), Univ Chile, Fac Ciencias Fis & Matemat, Dept Geol, Plaza Ercilla 803, Santiago 8370450, Chile. ; Morata, D (corresponding author), Univ Chile, Fac Ciencias Fis & Matemat, Andean Geothermal Ctr Excellence CEGA, Plaza Ercilla 803, Santiago 8370450, Chile.
来源期刊	MINERALS
EISSN	2075-163X
出版年	2021
卷号	11 期号:11
英文摘要	Detailed mineralogical analyses in areas with surface hydrothermal alteration zones associated with recent volcanism (< 1 Ma) in the Central Andean Volcanic Zone could provide key information to unravel the presence of hidden geothermal systems. In the Cordon de Inacaliri Volcanic Complex, a geothermal field with an estimated potential of ~1.08 MWe & BULL;km(-)(2) has been recently discovered. In this work, we focus on the hydrothermal alteration zones and discharge products of this area, with the aim to reconstruct the geological processes responsible for the space-time evolution leading to the geothermal records. We identified (1) discharge products associated with acid fluids that could be related to: (i) acid-sulfate alteration with alunite + kaolinite + opal CT + anatase, indicating the presence of a steam-heated blanket with massive fine-grained silica (opal-CT), likely accumulated in mud pots where the intersection of the paleowater table with the surface occurred; (ii) argillic alteration with kaolinite + hematite + halloysite + smectite + I/S + illite in the surrounding of the acid-sulfate alteration; and (2) discharge products associated with neutral-alkaline fluids such as: (i) discontinuous pinnacle-like silica and silica deposits with laterally developed coarse stratification which, together with remaining microorganisms, emphasize a sinter deposit associated with alkaline/freshwater/brackish alkaline-chlorine water bodies and laterally associated with (ii) calcite + aragonite deriving from bicarbonate waters. The scarce presence of relics of sinter deposits, with high degree crystallinity phases and diatom remnants, in addition to alunite + kaolinite + opal CT + anatase assemblages, is consistent with a superimposition of a steam-heated environment to a previous sinter deposit. These characters are also a distinguishing feature of paleosurface deposits associated with the geothermal system of the Cordon de Inacaliri Volcanic Complex. The presence of diatoms in heated freshwater bodies at 5100 m a.s.l. in the Atacama Desert environment could be related with the last documented deglaciation in the area (~20-10 ka), an important factor in the recharge of the hidden geothermal systems of the Pabelloncito graben.
英文关键词	clay minerals surface hydrothermal alteration steam heated active geothermal system diatoms Cerro Pabellon Andean Cordillera Chile
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000726823300001
WOS关键词	SILICEOUS SINTER DIAGENESIS ; OPAL-A ; LOW-TEMPERATURE ; ATACAMA DESERT ; HOT-SPRINGS ; EVOLUTION ; DEPOSITS ; ORIGIN ; ZONE ; MINERALOGY
WOS类目	Geochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing
WOS研究方向	Geochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/373721
作者单位	[Maza, Santiago Nicolas; Morata, Diego] Univ Chile, Fac Ciencias Fis & Matemat, Dept Geol, Plaza Ercilla 803, Santiago 8370450, Chile; [Maza, Santiago Nicolas; Morata, Diego] Univ Chile, Fac Ciencias Fis & Matemat, Andean Geothermal Ctr Excellence CEGA, Plaza Ercilla 803, Santiago 8370450, Chile; [Collo, Gilda] Ctr Invest Ciencias Tierra, CONICET, Consejo Nacl Invest Cient & Tecn, X5016GCA, Cordoba, Argentina; [Collo, Gilda] Univ Nacl Cordoba, Fac Filosofia & Humanidades, Dept Geog, X5016GCA, Cordoba, Argentina; [Cuna-Rodriguez, Carolina] Univ Mayor San Andres, Fac Ciencias Puras & Nat, Carrera Biol,POB 10077, La Paz, Bolivia; [Taussi, Marco; Renzulli, Alberto] Univ Urbino Carlo Bo, Dipartimento Sci Pure & Applicate, Via Ca Suore 2-4, I-61029 Urbino, Italy
推荐引用方式 GB/T 7714	Maza, Santiago Nicolas,Collo, Gilda,Morata, Diego,et al. The Hydrothermal Alteration of the Cordon de Inacaliri Volcanic Complex in the Framework of the Hidden Geothermal Systems within the Pabelloncito Graben (Northern Chile)[J],2021,11(11).
APA	Maza, Santiago Nicolas,Collo, Gilda,Morata, Diego,Cuna-Rodriguez, Carolina,Taussi, Marco,&Renzulli, Alberto.(2021).The Hydrothermal Alteration of the Cordon de Inacaliri Volcanic Complex in the Framework of the Hidden Geothermal Systems within the Pabelloncito Graben (Northern Chile).MINERALS,11(11).
MLA	Maza, Santiago Nicolas,et al."The Hydrothermal Alteration of the Cordon de Inacaliri Volcanic Complex in the Framework of the Hidden Geothermal Systems within the Pabelloncito Graben (Northern Chile)".MINERALS 11.11(2021).