Contribution of the natural isotopes of uranium for evaluating weathering processes in hydrographic basins from Araxá (MG)

• Grant number: 18/25332-0
• Support Opportunities: Regular Research Grants
• Start date: April 01, 2019
• End date: June 30, 2021
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Geophysics
• Principal Investigator: Daniel Marcos Bonotto
• Grantee: Daniel Marcos Bonotto
• Host Institution: Instituto de Geociências e Ciências Exatas (IGCE). Universidade Estadual Paulista (UNESP). Campus de Rio Claro. Rio Claro , SP, Brazil

Abstract

The study of weathering processes in Brazil using the natural radionuclides from the uranium decay series (238U, 234U and 210Pb) have been conducted without adopting an integrated approache. Thus, they do not allow establish appropriate comparison of the results obtained as the methods utilized are very distinct in terms of procedures, theoretical background and constraints involved. This research project aims to provide information in this direction. The selected study area is the hydrothermal spa Araxá (MG) due to several reasons, among them, the presence of hydrographic basins of variable surface area that are characterized by lithologies exhibiting distinct radionuclides activity concentration as identified by the previous geochemical surveys held in the region. (AU)

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

BONOTTO, DANIEL MARCOS. U-isotopes and weathering rates in watersheds of Araxa city, Minas Gerais State, Brazil. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY, v. 246, p. 15-pg., 2022-05-01. (18/25332-0)

BONOTTO, DANIEL MARCOS; THOMAZINI, FABIO DE OLIVEIRA. Comparative study of mineral and surface waters of Araxa spa, Minas Gerais State, Brazil. ENVIRONMENTAL EARTH SCIENCES, v. 78, n. 17, SEP 2019. (18/25332-0)

BONOTTO, DANIEL MARCOS. Hydrogeochemical study of surface waters from Arax? city, Minas Gerais State, Brazil. JOURNAL OF GEOCHEMICAL EXPLORATION, v. 213, JUN 2020. (18/25332-0)

BONOTTO, DANIEL M.. Hydrochemical and radiometric evaluation of fresh and thermal waters from Araxa city (Minas Gerais, Brazil). ENVIRONMENTAL GEOCHEMISTRY AND HEALTH, AUG 2021. (18/25332-0, 14/50945-4)