التفاصيل البيبلوغرافية
| العنوان: |
Seismogenic faulting in the Meruoca granite, NE Brazil, consistent with a local weak fracture zone. |
| المؤلفون: |
Moura AC; Universidade de Brasília, Campus Universitário Darcy Ribeiro, Instituto de Geociências, Brasília, DF, Brasil., De Oliveira PH; Departamento de Geologia, Universidade Federal do Rio Grande do Norte, Campus Universitário, Natal, RN, Brasil., Ferreira JM; Departamento de Geologia, Universidade Federal do Rio Grande do Norte, Campus Universitário, Natal, RN, Brasil., Bezerra FH; Departamento de Geologia, Universidade Federal do Rio Grande do Norte, Campus Universitário, Natal, RN, Brasil., Fuck RA; Universidade de Brasília, Campus Universitário Darcy Ribeiro, Instituto de Geociências, Brasília, DF, Brasil., Do Nascimento AF; Departamento de Geologia, Universidade Federal do Rio Grande do Norte, Campus Universitário, Natal, RN, Brasil. |
| المصدر: |
Anais da Academia Brasileira de Ciencias [An Acad Bras Cienc] 2014 Dec; Vol. 86 (4), pp. 1631-9. Date of Electronic Publication: 2014 Oct 24. |
| نوع المنشور: |
Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: |
English |
| بيانات الدورية: |
Publisher: Academia Brasileira De Ciencias Country of Publication: Brazil NLM ID: 7503280 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1678-2690 (Electronic) Linking ISSN: 00013765 NLM ISO Abbreviation: An Acad Bras Cienc Subsets: PubMed not MEDLINE |
| أسماء مطبوعة: |
Original Publication: Rio De Janeiro : Academia Brasileira De Ciencias |
| مستخلص: |
A sequence of earthquakes occurred in 2008 in the Meruoca granitic pluton, located in the northwestern part of the Borborema Province, NE Brazil. A seismological study defined the seismic activity occurring along the seismically-defined Riacho Fundo fault, a 081° striking, 8 km deep structure. The objective of this study was to analyze the correlation between this seismic activity and geological structures in the Meruoca granite. We carried out geological mapping in the epicentral area, analyzed the mineralogy of fault rocks, and compared the seismically-defined Riacho Fundo fault with geological data. We concluded that the seismically-defined fault coincides with ∼E-W-striking faults observed at outcrop scale and a swarm of Mesozoic basalt dikes. We propose that seismicity reactivated brittle structures in the Meruoca granite. Our study highlights the importance of geological mapping and mineralogical analysis in order to establish the relationships between geological structures and seismicity at a given area. |
| تواريخ الأحداث: |
Date Created: 20150116 Date Completed: 20150330 Latest Revision: 20150116 |
| رمز التحديث: |
20231215 |
| DOI: |
10.1590/0001-3765201420130031 |
| PMID: |
25590704 |
| قاعدة البيانات: |
MEDLINE |
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