Results 41 to 50 of about 438 (161)

Late Cambrian Syn‐Intrusive Thickening of the Ikh Mongol Arc Domains in the Mongolian Collage

Tectonics, Volume 44, Issue 1, January 2025.
Abstract Structural analysis, U–Pb monazite and xenotime dating, Ar–Ar dating of biotite and amphibole and thermodynamic modeling of peak metamorphic assemblages allow constraining the tectono‐thermal evolution of the migmatite‐magmatite domain on the southern periphery of Precambrian Zavkhan Block. The main subvertical metamorphic fabric resulted from
Vít Peřestý, Igor Soejono, Karel Schulmann, Gilles Ruffet, Andrew Kylander‐Clark, Jiří Sláma, Pavla Štípská, Petra Maierová, Pavel Hanžl, Carmen Aguilar, Adam Kašpar   +10 more
wiley   +1 more source

Tidal versus fluvial point bars: Key features from the integration of outcrop, core and wireline log information of Triassic examples

The Depositional Record, Volume 10, Issue 5, Page 793-820, November 2024.
Abstract The Triassic red beds of the Tabular Cover of the Iberian Meseta are an excellent reservoir outcrop analogue, a direct consequence of high‐quality exposures, which offer exceptional three‐dimensional outcrops, as well as a wide variability of depositional environments.
Luis Miguel Yeste, Marc Gil‐Ortiz, Fernando García‐García, César Viseras, Neil David Mcdougall, Patricia Cabello, Luca Caracciolo   +6 more
wiley   +1 more source

Petrologia do Maciço Alcalino de Itapirapuã, SP [PDF]

, 2017
The alkaline rock complex of Itapirapua covers an area of approximately 4 km², with irregular shape, and elongated NW-SE. It was intruded in a large body of granitic rocks. The alkaline intrusion consists exclusively of undersatured rocks, predominantly nepheline syenites with variable amounts of titaniferous garnet (melanite). Basic alkaline varieties
openaire   +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

Journal 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, J. E. Neilson, E. Gomez‐Rivas, N. H. Oxtoby, I.S.A.J. Jayachandran, Q. Adlan, V. C. Vahrenkamp   +6 more
wiley   +1 more source

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

Geologia 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, Luiz Sérgio Amarante Simões, Wellington Leonardo Damázio, Samuel Nunes Ferreira, George Luiz Luvizotto   +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]

Geologia 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, Jairo Roberto Jiménez-Rueda   +1 more
doaj   +1 more source

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

Journal 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, Pavla Štípská, Karel Schulmann, Andrew R. C. Kylander‐Clark, Ondrej Lexa, Turbold Sukhbaatar, Vít Peřestý, Yingde Jiang, Pavel Hanžl   +8 more
wiley   +1 more source

How the Sima de los Huesos was won

The 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, Ignacio Martínez, Ana Gracia‐Téllez, José‐Miguel Carretero, Alfonso Esquivel, Nuria García, Carlos Lorenzo, Rolf Quam, Arantza Aramburu, Nohemi Sala, Javier Trueba   +10 more
wiley   +1 more source

Un settembre molto idrogeologico

Acque Sotterranee, 2019
Nel settembre 2019 si sono avute molte occasioni di incontri e di riflessioni scientifiche per gli idrogeologi italiani. La rassegna degli eventi IAH o patrocinati da IAH che si sono svolti in questo periodo comincia con il congresso congiunto SIMP-SGI ...
Daniela Ducci, Paolo Fabbri, Marco Petitta, Sergio Rusi   +3 more
doaj   +1 more source

Volcanic Unrest After the 2021 Eruption of La Palma

Geophysical Research Letters, Volume 51, Issue 11, 16 June 2024.
Abstract La Palma, Canary Islands, had its largest historical eruption in 2021. From January 2022 to May 2023 there were >2,100 seismic events, primarily at depths ≤20 km, prompting us to update the deformation and modeling study, using interferometric synthetic aperture radar observations and a last generation interpretation tool.
José Fernández, Joaquin Escayo, Juan F. Prieto, Kristy F. Tiampo, Antonio G. Camacho, Eumenio Ancochea   +5 more
wiley   +1 more source