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Mostrando ítems 11-20 de 1718
On-field Raman spectroscopy of Patagonian prehistoric rock art: Pigments, alteration products and substrata
(Elsevier, 2018-08)
An extensive in situ Raman spectroscopic campaign was performed on archaeological sites in three different provinces in Patagonia, Argentina (Neuquén, Río Negro and Chubut). 16 open air shelters located in different ...
Resistance to chemical attack of serra do barriga stock ornamental granites – Sobral/CEResistência ao ataque químico de granitos ornamentais do stock Serra do Barriga – Sobral/CE
(2020-01-01)
Here is presented results from resistance to chemical attack provided by four types of granitic stock Serra do Barriga, through the loss of luster, color variations, minerals alterations, beyond the influence of petrography. ...
Geology And Hydrothermal Alteration Of The Chapi Chiara Prospect And Nearby Targets, Southern Peru, Using Aster Data And Reflectance Spectroscopy
(SOC ECONOMIC GEOLOGISTS, INCLITTLETON, 2015)
Release of potassium from rock powder by the yeast Torulaspora globosa
(Brazilian Archives of Biology and Technology, 2012-08-01)
The alteration of minerals in rocks and the availability of elements for plant nutrition require long periods of time, and microorganisms are thought to induce the release of potassium and phosphate from rocks. In this ...
Evolução termal de potenciais reservatórios na porção leste da bacia do Parnaíba
(Universidade do Vale do Rio dos Sinos, 2018-06-07)
In the last few decades, the Parnaíba Basin is being subject of study since it was discovered its high potential on natural gas exploration. In this scope, the study area is located on the eastern part of the basin, northern ...
Evolução termal de potenciais reservatórios na porção leste da bacia do Parnaíba
(Universidade do Vale do Rio dos Sinos, 2018-06-07)
In the last few decades, the Parnaíba Basin is being subject of study since it was discovered its high potential on natural gas exploration. In this scope, the study area is located on the eastern part of the basin, northern ...
Sm-Nd Age of the Fazenda Brasileiro Gabbro, Bahia, Brazil: Example of Robust Behavior of the Sm-Nd Isotopic System Under Extreme Hydrothermal Alteration
(2003)
The Fazenda Brasileiro gold mineralization is hosted by a gabbroic sill, intrusive into metavolcanicmetasedimentary rocks of the Rio Itapicuru Greenstone Belt, São Francisco Craton. The 2.05 Ga old mineralization
is ...