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DOI | 10.1130/B35296.1 |
Physical and chemical strain-hardening during faulting in poorly lithified sandstone: The role of kinematic stress field and selective cementation | |
Pizzati, Mattia1; Balsamo, Fabrizio1; Storti, Fabrizio1; Iacumin, Paola2 | |
2020-05-01 | |
发表期刊 | GEOLOGICAL SOCIETY OF AMERICA BULLETIN |
ISSN | 0016-7606 |
EISSN | 1943-2674 |
出版年 | 2020 |
卷号 | 132期号:5-6页码:1183-1200 |
文章类型 | Article |
语种 | 英语 |
国家 | Italy |
英文摘要 | In this work, we report the results of a multidisciplinary study describing the structural architecture and diagenetic evolution of the Rocca di Neto extensional fault zone developed in poorly lithified sandstones of the Crotone Basin, Southern Italy. The studied fault zone has an estimated displacement of similar to 90 m and consists of: (1) a low-deformation zone with subsidiary faults and widely spaced deformation bands; (2) an similar to 10-m-wide damage zone, characterized by a dense network of conjugate deformation bands; (3) an similar to 3-m-wide mixed zone produced by tectonic mixing of sediments with different grain size; (4) an similar to 1-m-wide fault core with bedding transposed into foliation and ultracomminute black gouge layers. Microstructural investigations indicate that particulate flow was the dominant early-stage deformation mechanism, while cataclasis became predominant after porosity loss, shallow burial, and selective calcite cementation. The combination of tectonic compaction and preferential cementation led to a strain-hardening behavior inducing the formation of "inclined conjugate deformation band sets" inside the damage zone, caused by the kinematic stress field associated with fault activity. Conversely, conjugate deformation band sets with a vertical bisector formed outside the damage zone in response to the regional extensional stress field. Stable isotope analysis helped in constraining the diagenetic environment of deformation, which is characterized by mixed marine-meteoric signature for cements hosted inside the damage zone, while it progressively becomes more meteoric moving outside the fault zone. This evidence supports the outward propagation of fault-related deformation structures in the footwall damage zone. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000530917400019 |
WOS关键词 | RIO-GRANDE RIFT ; CATACLASTIC DEFORMATION BANDS ; CALABRIAN ARC ; CROTONE BASIN ; CALCITE CEMENTATION ; POROUS SANDSTONES ; SHEAR ZONES ; FLUID-FLOW ; PETROPHYSICAL PROPERTIES ; NATIONAL-PARK |
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/279457 |
专题 | 地球科学 |
作者单位 | 1.Univ Parma, Nat & Expt Tecton Res Grp, Dept Chem Life Sci & Environm Sustainabil, I-43124 Parma, Italy; 2.Univ Parma, Dept Chem Life Sci & Environm Sustainabil, I-43124 Parma, Italy |
推荐引用方式 GB/T 7714 | Pizzati, Mattia,Balsamo, Fabrizio,Storti, Fabrizio,et al. Physical and chemical strain-hardening during faulting in poorly lithified sandstone: The role of kinematic stress field and selective cementation[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2020,132(5-6):1183-1200. |
APA | Pizzati, Mattia,Balsamo, Fabrizio,Storti, Fabrizio,&Iacumin, Paola.(2020).Physical and chemical strain-hardening during faulting in poorly lithified sandstone: The role of kinematic stress field and selective cementation.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,132(5-6),1183-1200. |
MLA | Pizzati, Mattia,et al."Physical and chemical strain-hardening during faulting in poorly lithified sandstone: The role of kinematic stress field and selective cementation".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 132.5-6(2020):1183-1200. |
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