Rodríguez-Escudero, Emilio, Martínez-Díaz, José J., Giner-Robles, Jorge L., Tsige, Meaza, Cuevas-Rodríguez, Jaime (2020) Pulverized quartz clasts in gouge of the Alhama de Murcia fault (Spain): Evidence for coseismic clast pulverization in a matrix deformed by frictional sliding. Geology, 48 (3) 283-287 doi:10.1130/g47007.1
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Pulverized quartz clasts in gouge of the Alhama de Murcia fault (Spain): Evidence for coseismic clast pulverization in a matrix deformed by frictional sliding | ||
| Journal | Geology | ||
| Authors | Rodríguez-Escudero, Emilio | Author | |
| Martínez-Díaz, José J. | Author | ||
| Giner-Robles, Jorge L. | Author | ||
| Tsige, Meaza | Author | ||
| Cuevas-Rodríguez, Jaime | Author | ||
| Year | 2020 (March 1) | Volume | 48 |
| Issue | 3 | ||
| Publisher | Geological Society of America | ||
| DOI | doi:10.1130/g47007.1Search in ResearchGate | ||
| Generate Citation Formats | |||
| Mindat Ref. ID | 144112 | Long-form Identifier | mindat:1:5:144112:7 |
| GUID | 0 | ||
| Full Reference | Rodríguez-Escudero, Emilio, Martínez-Díaz, José J., Giner-Robles, Jorge L., Tsige, Meaza, Cuevas-Rodríguez, Jaime (2020) Pulverized quartz clasts in gouge of the Alhama de Murcia fault (Spain): Evidence for coseismic clast pulverization in a matrix deformed by frictional sliding. Geology, 48 (3) 283-287 doi:10.1130/g47007.1 | ||
| Plain Text | Rodríguez-Escudero, Emilio, Martínez-Díaz, José J., Giner-Robles, Jorge L., Tsige, Meaza, Cuevas-Rodríguez, Jaime (2020) Pulverized quartz clasts in gouge of the Alhama de Murcia fault (Spain): Evidence for coseismic clast pulverization in a matrix deformed by frictional sliding. Geology, 48 (3) 283-287 doi:10.1130/g47007.1 | ||
| In | (2020, March) Geology Vol. 48 (3) Geological Society of America | ||
| Abstract/Notes | Abstract The fault gouge of the Alhama de Murcia fault (southeast Spain) shows a texture that resembles a mylonite, including a prominent foliation, S-C fabric, and isoclinal folds. It also embeds a large number of isolated pulverized quartz clasts (PQCs). Structural analysis indicates that the gouge fabric was mainly developed by slow frictional sliding along phyllosilicate-lined Riedel shear bands during continued shearing. In contrast, the PQCs show tensile fracture network features that are typically reported in seismically pulverized rocks found along seismogenic faults. This suggests that quartz-clast pulverization was due to a transient dilatational mechanism rather than shearing. We propose that the PQCs are the result of a rapid confined stress drop related to transient tensile stresses during coseismic ruptures that interrupt creep faulting along the gouge zone. The present study suggests that there is probably a large amount of evidence for paleoseismicity in fault rocks that is currently overlooked. | ||
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