Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1130/B32029.1 |
Seismically enhanced hydrothermal plume advection through the process zone of the Compione extensional Fault, Northern Apennines, Italy | |
Lucca, Alessio1; Storti, Fabrizio1; Molli, Giancarlo1,2; Muchez, Philippe3; Schito, Andrea4; Artoni, Andrea5; Balsamo, Fabrizio1; Corrado, Sveva4; Mariani, Emma Salvioli5 | |
2019-03-01 | |
发表期刊 | GEOLOGICAL SOCIETY OF AMERICA BULLETIN
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ISSN | 0016-7606 |
EISSN | 1943-2674 |
出版年 | 2019 |
卷号 | 131页码:547-571 |
文章类型 | Article |
语种 | 英语 |
国家 | Italy; Belgium |
英文摘要 | Reconstructing the paleofluid evolution in mature fault zones, which typically have complex structural architectures, is a challenging task because reactivation of pre-existing deformation structures and dissolution-reprecipitation processes are very abundant. Understanding why specific structural elements are preferentially mineralized and what are the factors leading to rapid fluid migration and accumulation, bears geological and economic implications, especially in seismically active fault zones. We studied the Compione Fault on the Tyrrhenian Sea side of the Northern Apennines orogenic wedge, Italy, which is a segment of the 30-km-long Northern Lunigiana high-angle extensional fault system still active today. The Compione Fault propagated from the metamorphic basement and accumulated about 1.5 km of displacement. We used structural, petrographic, isotopic, microthermometric, compositional, and organic matter analyses to constrain fluid and host rock properties during fault zone evolution. This approach allowed us to quantify the thermal anomaly in the fault zone and to infer the processes responsible for such a disequilibrium. Specifically, we show that in the fault process zone ahead of the upper fault tip, which is twice as wide as the damage zone, seismic pumping caused suprahydrostatic fluid pressures and that local dilation promoted the nucleation of a highly permeable mesh of conjugate extensional shear fractures hosting calc-silicate mineralization. The thermal difference between hydrothermal minerals in the conjugate fracture mesh and the host rock is 60-90 degrees C. The mineralizing fluids were deeply sourced from metamorphic reactions. Propagation of the upper fault tip caused process zone folding and incorporation into the fault damage zones. As the upper fault tip breached through shallower structural levels, it favored mixing between deep and meteoric fluids. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000460031700011 |
WOS关键词 | LARDERELLO GEOTHERMAL-FIELD ; FELDSPAR MINERAL ASSEMBLAGES ; CRACK-SEAL VEIN ; FLUID-FLOW ; ALPI APUANE ; CONTINENTAL LITHOSPHERE ; CHEMICAL INTERACTION ; GARFAGNANA GRABENS ; AQUEOUS-SOLUTIONS ; PRESSURE SOLUTION |
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/24843 |
专题 | 地球科学 |
作者单位 | 1.Univ Parma, Dept Chem Life Sci & Environm Sustainabil, Nat & Expt Tecton Res Grp, I-143124 Parma, Italy; 2.Univ Pisa, Dept Earth Sci, Via S Maria 53, I-56126 Pisa, Italy; 3.Katholieke Univ Leuven, Dept Earth & Environm Sci, Celestijnenlaan 200E, B-3001 Heverlee, Belgium; 4.Roma Tre Univ, Dept Sci, Geol Sect, Lgo S Leonardo Murialdo 1, I-00146 Rome, Italy; 5.Univ Parma, Dept Chem Life Sci & Environm Sustainabil, I-43124 Parma, Italy |
推荐引用方式 GB/T 7714 | Lucca, Alessio,Storti, Fabrizio,Molli, Giancarlo,et al. Seismically enhanced hydrothermal plume advection through the process zone of the Compione extensional Fault, Northern Apennines, Italy[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2019,131:547-571. |
APA | Lucca, Alessio.,Storti, Fabrizio.,Molli, Giancarlo.,Muchez, Philippe.,Schito, Andrea.,...&Mariani, Emma Salvioli.(2019).Seismically enhanced hydrothermal plume advection through the process zone of the Compione extensional Fault, Northern Apennines, Italy.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,131,547-571. |
MLA | Lucca, Alessio,et al."Seismically enhanced hydrothermal plume advection through the process zone of the Compione extensional Fault, Northern Apennines, Italy".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 131(2019):547-571. |
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