Evaluation of methods for thermobarometry and P-T conditions inference for granulite facies rocks

• Grant number: 12/23665-5
• Support Opportunities: Scholarships in Brazil - Master
• Start date: March 01, 2013
• End date: February 28, 2015
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Geology
• Principal Investigator: Renato de Moraes
• Grantee: Renato Bezner Martinez
• Host Institution: Instituto de Geociências (IGC). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

The aim of the project is to evaluate and compare alternative thermobarometric methods for inference of P-T conditions of granulite facies metamorphism, such as Zr in rutile, zircon Ti, Ti in quartz and pseudosections. Granulites of Varginha - Três Pontas Nappe, MG, will be used as a target for this research. In the referred nappe mafic and aluminous migmatitic granulites occur and are present, respectively, the following mineral associations: diopside + plagioclase + garnet + rutile and rutile + orthoclase + quartz + garnet + kyanite. The absence of quartz and plagioclase in each association precludes the use of conventional thermobarometers, and alternative methods will be used to check if it is possible to establish metamorphic peak conditions.

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

MARTINEZ, Renato Bezner. Avaliação de métodos para cálculo e inferência de condições P-T em rochas da fácies Granulito: investigação das rochas das nappes Três Pontas-Varginha e Socorro-Graxupé. 2015. Master's Dissertation - Universidade de São Paulo (USP). Instituto de Geociências (IG/BT) São Paulo.