DGRN: Extensão e Especialização
Cursos de Extensão e Especialização
DGRN: Laboratórios e Grupos
Laboratórios do DGRN
DGRN: Notícias
Notícias do DGRN
DGRN: Pesquisa
Linhas de Pesquisa
DGRN: Programa de Pós-Graduação
Programa de Pós-Graduação em Geociências
O Programa de Pós-Graduação em Geociências tem por finalidade a formação de recursos humanos capazes de contribuir para o desenvolvimento científico, educacional, históric
DGRN: Publicações
Artigos Acadêmicos
Distribution of gamma-ray elements in Cerro do Jarau impact structure and a proposal of geothermal modeling
Large meteorite impacts release kinetic energy that induces rock deformation, high temperatures and fluid circulation during the cratering process. To understand the correlation between rock deformation and fluid circulation, it is relevant to investigate
post-impact hydrothermal flux and its relation to the local geology. The Cerro do Jarau impact structure is a ~13.5 km diameter impact structure located in southern Brazil and formed on Cretaceous continental flood basalts of the Serra Geral Formation and
Evidence of crustal flexure induced by fluvial incisions
Fluvial erosion of the Earth's crust creates valleys ranging from hundreds of meters to a few kilometers wide. The resulting unloading is supported by the flexural rigidity of the continental lithosphere. As a result, the bending of the lithosphere around individual river valleys is usually imperceptible in the landscape, specially in tectonically quiescent environments.
Exchange processes between surface, atmosphere, and interior
This chapter will discuss exchange processes that control Titan's global chemistry and thus its habitability: e.g., impact cratering, cryovolcanism, degassing. We review the available work constraining the extent of exchange between Titan's ocean and surface. Cassini-Huygens observations provide a better picture of the composition and structure of the ice but do not reveal the extent of its tectonics or overturning, if any. Improved laboratory data are enabling models of the interior structure and overturning, coupled with transport from impacts.
