Crustal structure in high deformation zones: Insights from gravimetric and magnetometric studies in the Guacha Corral shear zone (Eastern Sierras Pampeanas, Argentina)
- Radice, Stefania
- Lince Klinger, Federico Gustavo
- Maffini, María Natalia
- Pinotti, Lucio Pedro
- Demartis, Manuel
- D'eramo, Fernando Javier
- Giménez, Mario Jorge
- Coniglio, Jorge Enrique
DOIAbstract
The Guacha Corral shear zone (GCSZ) is represented by mylonites that were developed under amphibolites facies conditions from migmatitic protoliths. In this contribution, geophysical, petrological and structural data were combined to determine the 3D geometry of the GCSZ. New gravimetric, magnetometric and structural studies, along an E-W profile, were integrated with existing magnetotelluric and seismological data from a representative regional database of the Eastern Sierras Pampeanas. The zonation of different fabrics across the GCSZ suggests that the pre-existing heterogeneities of the protoliths played a key role in governing the degree of metamorphism of different regions. The low gravity anomalies observed in the GCSZ suggest a trans...
Add to ORKG