Structures and magnetic fabric of Lavadores-Madalena pluton [Estruturas e fabric magnético no maciço granítico de Lavadores-Madalena]

• Type: Article in International Scientific Journal
• Date: 2014

Authors

Sant'Ovaia, H (Author) FCUP; Ribeiro, MA (Author) FCUP; Martins, HCB (Author) FCUP; Ferrao, F (Author) Other; Gomes, C (Author) Other; Noronha, F (Author) FCUP

Journal

Title: Comunicações Geológicas

Vol. 101

Pages: 313-317

ISSN: 0873-948X

Publisher: LNEG - Laboratório Nacional de Energia e Geologia

Indexing

ISI Web of Knowledge

Scopus - 5 Citations

Other information

Authenticus ID: P-00G-53C

Abstract (EN): The post-tectonic Lavadores-Madalena granite massif occurs in key sector for understanding the geodynamic variscan evolution of Porto-Tomar Shear Zone. Mapping, structural and magnetic fabric data indicate that this massif presents a magmatic flow conditioned by shear deformation. The geometry of the massif and its magnetic foliation fabric are consistent with the C-S geometry of the host rocks. In the studied area, the convergence of NNW-SSE to NS and WNW-ESE to NW-SE structures is materialized. Those convergences of structures have enhanced the root location of the Lavadores-Madalena massif. Studies of Anisotropy of Magnetic Susceptibility and Isothermal Remnant Magnetization of Lavadores- Madalena granite allowed considering it as a "magnetite-type. © 2014 LNEG ¿ Laboratório Nacional de Geologia e Energia IP.

Language: Portuguese

Type (Professor's evaluation): Scientific