Low-Temperature thermochronology: techniques and Interpretation

• Grant number: 21/13819-4
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: January 01, 2022
• End date: December 31, 2022
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Geology
• Principal Investigator: Mauricio Parra Amézquita
• Grantee: Juliana de Fátima Gomes Pinho
• Host Institution: Instituto de Geociências (IGC). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 18/15613-1 - Topographic construction along the northeastern Andes and the origin of the Transcontinental Amazon Basin, AP.JP2

Abstract

Low-temperature thermochronology comprehends a set of radioisotopic dating techniques widely used in geosciences to understand the timing and rates of processes operating at shallow depths in the Earth, at temperatures lower than ~300°C. Inherent to the relatively low temperature required to disturb and reset thermochronometric radioisotopic systems, these techniques have flourished in a wide spectrum of geological applications in which the mechanisms of cooling of rocks can be inferred. Examples of such applications include magmatic cooling, tectonic or erosional exhumation, landscape development by fluvial incision or glacial erosion, mineralizations emplacement, studies of the age of fault movements, among others. The aim of the Scientific Initiation scholarship is to train students in various aspects of low-temperature thermochronometry, including theoretical fundaments, sample preparation, apatite-fission-track analyses, and modeling and interpretation of thermochronometic data. (AU)