Results 41 to 50 of about 5,319 (257)

Nature of metamorphism of low-temperature metamorphic rocks in the continent-ocean transition zone (by the example of Pensantain Sequence of Western Kamchatka)

Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2020
The nature of low-temperature metamorphic rocks in the continent-ocean transition zone has been studied on the example of metamorphosed Late Cretaceous volcanic-sedimentary deposits of Western Kamchatka (Pensantain Sequence).The Pensantain Sequence ...
Бадрединов ЗГ., Авченко О.В., Тарарин И.А., Ноздрачев Е.А.   +3 more
doaj   +1 more source

Magmatic evolution of the La Huerta Plutonic Complex, Jalisco: A 80–70 Ma record of arc magmatism along the Mexican Cordillera

Revista Mexicana de Ciencias Geológicas, 2023
The La Huerta Plutonic Complex (LHPC) forms part of the Cretaceous Mexican Cordillera, located between the well-documented ~80 Ma Puerto Vallarta Batholith (PVB) and the ~65 Ma Manzanillo Plutonic Complex (MPC).
Guillermo A. Ortiz-Joya, Peter Schaaf, Pedro Corona-Chávez, Gabriela N. Solís-Pichardo, Gerardo F. Arrieta-García, J. Teodoro Hernández-Treviño   +5 more
doaj   +1 more source

U-Pb SHRIMP zircon dating of Grenvillian metamorphism in Western Sierras Pampeanas (Argentina) : correlation with the Arequipa-Antofalla craton and constraints on the extent of the Precordillera Terrane [PDF]

, 2006
The Sierras Pampeanas of Argentina, the largest outcrop of pre-Andean crystalline basement in southern South America, resulted from plate interactions along the proto-Andean margin of Gondwana, from as early as Mesoproterozoic to Late Paleozoic times (e ...
C. Mark Fanning, Carlos W. Rapela, Carmen Galindo, Casquet, Casquet, Cesar Casquet, Corrievau, Damm, Edgardo Baldo, Galindo, Jose M. González-Casado, Juan A. Dahlquist, Kretz, Loewy, Martignole, McDonough, Pankhurst, Porcher, Powell, Ramos, Ramos, Ramos, Rapela, Rapela, Rivers, Robert J. Pankhurst, Thomas, Tosdal, Varela, Vavra, Vujovich, Wasteneys   +31 more
core   +4 more sources

Garnet-Amphibolites Mineralogy and thermobarometry in Aliabad-Damagh (south of Hamedan, Sanandaj-Sirjan Zone) [PDF]

پترولوژی, 2017
The garnet-amphibolites in Aliabad-Damagh area, occurs as layers and are enveloped by staurolite-schist. They composed predominantly of garnet, hornblende, feldspar (± muscovite and quartz) with titanite, epidote, ilmenite and graphite as accessory ...
Ali Akbar Baharifar, Kwan Nang Pang, Sun Lin Chung, Yoshiyuki Iizuka   +3 more
doaj   +1 more source

Lunar Mg suite: Thermobarometry and petrogenesis of parental magmas [PDF]

Journal of Geophysical Research: Planets, 2001
Using compilations of internally consistent thermodynamic data on minerals and advances in quantifying the energetics of crystalline solid solutions, we have recalculated the pressures and temperatures of equilibration of troctolite sample 76535 and a number of spinel cataclasites. The five phase assemblage (olivine + orthopyroxene + clinopyroxene + Cr‐
I. S. McCallum, J. M. Schwartz
openaire   +1 more source

Application of titanium-in-quartz thermobarometry to greenschist facies veins and recrystallized quartzites in the Hsüehshan range, Taiwan [PDF]

, 2013
The accuracy, reliability and best practises of Ti-in-quartz thermobarometry (TitaniQ) in greenschist facies rocks have not been established. To address these issues, we measured Ti concentrations in rutile-bearing samples of moderately deformed ...
Avouac, J.-P., Chan, Y.-C., Kidder, S.
core   +4 more sources

COMPLICATED THERMAL HISTORY OF THE LITHOSPHERIC MANTLE OF THE ANABAR REGION: RECONSTRUCTIONS BASED ON XENOCRYSTS FROM KIMBERLITES

Геодинамика и тектонофизика
The thermal history and thickness of the lithospheric mantlebeneath the kimberlite fields of the Eastern Anabar shield and adjacent territories of the Siberian craton were reconstructed based on the composition of clinopyroxene xenocrysts from the ...
А. M. Dymshits, E. A. Gladkochub, S. I. Kostrovitsky   +2 more
doaj   +1 more source

Garnet Chemical Zoning Based Thermobarometry: Method Evaluation and Applications in the Menderes Massif, Western Turkey

Geosciences, 2021
The garnet chemical zoning method (GZM) is a reliable thermodynamic approach for forward modeling pressure-temperature (P-T) paths using observed garnet and bulk rock compositions.
Thomas M. Etzel, Elizabeth J. Catlos
doaj   +1 more source

Amp-TB2: An Updated Model for Calcic Amphibole Thermobarometry [PDF]

Minerals, 2021
Amphibole (Amp) plays a crucial role in the study of several earth and planetary processes. One of its most common applications is in thermobarometry, especially for volcanic-magmatic systems. However, many thermobarometers require the input of melt composition, which is not always available in volcanic products (e.g., partially crystallized melts or ...
openaire   +1 more source

Thermobarometric constraints on the depth of exposure and conditions of plutonism and metamorphism at deep levels of the Sierra Nevada Batholith, Tehachapi Mountains, California [PDF]

, 1993
We present thermodynamic estimates of pressures, temperatures, and volatile activities in variably deformed, gabbroic to granitic, Cretaceous (115–100 Ma) batholithic and framework rocks of the Tehachapi Mountains, southernmost Sierra Nevada, California.
Pickett, David A., Saleeby, Jason B.
core   +1 more source