Results 51 to 60 of about 6,489 (209)

Petrología de Alcántara (Cáceres) [PDF]

open access: yes, 1984
Trataremos en este apartado algunas características fundamentales de tipo petrogenético, basándonos principalmente en las relaciones texturales de las rocas estudiadas, y muy especialmente de las unidades de mayor importancia cuantitativa: granitos ...
Ruíz García, Casilda
core   +1 more source

STRATIGRAPHY AND DIAGENESIS OF THE THAMAMA‐B RESERVOIR ZONE AND ITS SURROUNDING DENSE ZONES IN ABU DHABI OILFIELDS AND EQUIVALENT OMAN OUTCROPS

open access: yesJournal of Petroleum Geology, Volume 47, Issue 4, Page 395-430, October 2024.
We review published studies characterizing the Thamama‐B reservoir zone in the upper Kharaib Formation (late Barremian) in Abu Dhabi oilfields and at outcrops in Oman. Available data for oxygen and carbon isotope compositions, fluid inclusion measurements, cement abundance and formation water composition are interpreted in terms of a paragenetic model ...
S. N. Ehrenberg   +6 more
wiley   +1 more source

Petrología de Cañaveral(Cáceres) [PDF]

open access: yes, 1987
La escasez de afloramientos graníticos no permite hacer grandes generalizaciones sobre la historia petrogenética de este grupo de rocas. Cualquier esquema petrogenético ha de referirse necesariamente a los utilizados en las hojas de Garrovillas y Casar ...
Ruíz García, Casilda
core   +1 more source

Carboniferous Barrovian to Permian Buchan‐type metamorphic cycles in the Mongolian Altai Zone: Implication for pressure cycles in accretionary orogens

open access: yesJournal of Metamorphic Geology, Volume 42, Issue 7, Page 979-1033, September 2024.
Abstract In the Altai Accretionary Wedge, several periods of Barrovian‐ and Buchan‐type metamorphic cycles were dated from Ordovician to Permian. However, the timing and link between these cycles are not clear, and their causes are debated. In order to contribute to the understanding of Barrovian‐ to Buchan‐type evolution of the accretionary wedges, we
Carmen Aguilar   +8 more
wiley   +1 more source

O Grupo Canastra em sua área-tipo, região de Tapira, sudoeste do estado de Minas Gerais

open access: yesGeologia USP. Série Científica, 2012
Este trabalho teve como objetivo apresentar os resultados do mapeamento geológico realizado na região de Tapira, parte Sul da Faixa Brasília. Esta região, que é a área-tipo do Grupo Canastra, mostrou grandes complexidades tectônica e estratigráfica ao ...
Carlos Humberto da Silva   +4 more
doaj   +1 more source

Morphostructural analysis applied for susceptibility assessment of environmental degradation by linear hydraulic erosions in the countryside of São Paulo State [PDF]

open access: yesGeologia USP. Série Científica, 2015
The Westside of the State of São Paulo, in Brazil, is known by its strong agricultural vocation and erosion problems. The natural conditions and the occupation dynamic were propitious to the emergence of this kind of environmental degradation in the ...
Márcia Sayuri Morinaga   +1 more
doaj   +1 more source

How the Sima de los Huesos was won

open access: yesThe Anatomical Record, Volume 307, Issue 7, Page 2225-2245, July 2024.
Abstract Although the first discovery of a human fossil in the Sima de los Huesos took place in 1976, systematic excavations did not begin there until 1984. Since then, this site has been continuously excavated in month‐long camps. The site is dated by different radiometric techniques to between 430,000 and 300,000 years ago.
Juan‐Luis Arsuaga   +10 more
wiley   +1 more source

COMPARAÇÃO DA DINÂMICA EVOLUTIVA, A LONGO E CURTO PRAZO, ENTRE O PLANALTO DE POÇOS DE CALDAS E O PLANALTO DE SÃO PEDRO DE CALDAS

open access: yesRevista Brasileira de Geomorfologia, 2014
Este trabalho utiliza metodologias que permitem o estudo de evolução da paisagem a longo-prazo (termocronologia por traço de fissão em apatita - TFA) e curto-prazo (análise morfométrica da rede de drenagem, pelo índice de relação declividade – extensão ...
Daniel Henrique de Souza   +3 more
doaj   +1 more source

Conglomerats, gresos, argiles i calcàries de Montgat [PDF]

open access: yes, 2004
Inventari d'espais d'interès geològic a Catalunya. Generalitat de Catalunya. Departament de Medi Ambient i Habitatge.
Gómez Gras, David Manuel   +2 more
core   +1 more source

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