Results 51 to 60 of about 6,691 (288)

MANTLE TERRANES OF THE SIBERIAN CRATON: THEIR INTERACTION WITH PLUME MELTS BASED ON THERMOBAROMETRY AND GEOCHEMISTRY OF MANTLE XENOCRYSTS

open access: yesГеодинамика и тектонофизика, 2019
We have studied variations in the structure and composition of minerals from the pipes of the Yakutian kimberlite province (YKP) in different mantle terranes of the Siberian craton.
I. V. Ashchepkov   +7 more
doaj   +1 more source

Mineral chemistry, thermobarometry and tectonomagmatic setting of Late-Cretaceous volcanic rocks from the Kojid area (south of Lahijan, northern Alborz) [PDF]

open access: yesپترولوژی, 2018
The volcanic rocks of Kojid area (south of Lahijan) crop out in northern Alborz. They show mainly pillow structure with numerous cross-cutting dykes. Based on lithostratigraphic relationships and interpillow pelagic limestones, the volcanics are Late ...
morteza delavari   +2 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

open access: yesRevista 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   +5 more
doaj   +1 more source

Further evidence for early lunar magnetism from troctolite 76535 [PDF]

open access: yes, 2017
The earliest history of the lunar dynamo is largely unknown and has important implications for the thermal state of the Moon and the physics of dynamo generation.
Garrick-Bethell, Ian   +4 more
core   +1 more source

Using the elastic properties of zircon-garnet host-inclusion pairs for thermobarometry of the ultrahigh-pressure Dora-Maira whiteschists: problems and perspectives

open access: yesContributions to Mineralogy and Petrology, 2021
The ultrahigh-pressure (UHP) whiteschists of the Brossasco-Isasca unit (Dora-Maira Massif, Western Alps) provide a natural laboratory in which to compare results from classical pressure (P)–temperature (T) determinations through thermodynamic modelling ...
N. Campomenosi   +7 more
semanticscholar   +1 more source

High‐Resolution P‐T‐Time Paths Across Himalayan Faults Exposed Along the Bhagirathi Transect NW India: Implications for the Construction of the Himalayan Orogen and Ongoing Deformation

open access: yesGeochemistry, Geophysics, Geosystems, 2020
Pressure‐temperature (P‐T) conditions and high‐resolution paths from 11 garnet‐bearing rocks collected across Himalayan fault systems exposed along the Bhagirathi River (Uttarakhand, NW India) reveal the tectonic conditions responsible for their growth ...
Elizabeth J. Catlos   +5 more
doaj   +1 more source

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

open access: yesВестник 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.   +3 more
doaj   +1 more source

Late Cretaceous to Paleocene Metamorphism and Magmatism in the Funeral Mountains Metamorphic Core Complex, Death Valley, California [PDF]

open access: yes, 2007
Amphibolite-facies Proterozoic metasedimentary rocks below the low-angle Cenozoic Boundary Canyon Detachment record deep crustal processes related to Mesozoic crustal thickening and subsequent extension.
Colgan, Joseph P.   +4 more
core   +2 more sources

A new clinopyroxene thermobarometer for mafic to intermediate magmatic systems [PDF]

open access: yesEuropean Journal of Mineralogy, 2021
Clinopyroxene-only thermobarometry is one of the most practical tools to reconstruct crystallization pressures and temperatures of clinopyroxenes. Because it does not require any information of coexisting silicate melt or other co-crystallized mineral ...
X. Wang   +8 more
doaj   +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]

open access: yes, 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

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