Results 11 to 20 of about 715,720 (269)

Large Igneous Province Record Through Time and Implications for Secular Environmental Changes and Geological Time‐Scale Boundaries

open access: yesGeophysical Monograph Series, Page 1-26., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst   +8 more
wiley  

+23 more sources

Shear heating reconciles thermal models with the metamorphic rock record of subduction. [PDF]

open access: yesProc Natl Acad Sci U S A, 2018
Significance Thermal structure controls numerous aspects of subduction zone metamorphism, rheology, and melting. Many thermal models assume small or negligible coefficients of friction and underpredict pressure–temperature (P–T) conditions recorded by ...
Kohn MJ   +4 more
europepmc   +2 more sources

Geology of the Montigiu Nieddu metamorphic basement, NE Sardinia (Italy)

open access: yesJournal of Maps, 2020
A geological map at 1:10,000 scale is presented that shows the distribution of the metamorphic rock units in the area of Montigiu (Mt.) Nieddu (NE Sardinia). These units belong to the High-Grade Metamorphic Complex in the Inner Zone of the Variscan chain
Gabriele Cruciani   +3 more
doaj   +1 more source

Geothermal reservoir structure and heat flow characteristics of proterozoic metamorphic rock series of Dahongshan group in Honghe river basin

open access: yesCarsologica Sinica, 2022
Hot mineral water for development and utilization has been drilled from the metamorphic rock series of Dahongshan group of paleoproterozoic in the Gasa basin in the middle part of the Honghe river basin through geothermal geological survey, geophysical ...
Chuanwei LI   +4 more
doaj   +1 more source

Boron isotope record of peak metamorphic ultrahigh-pressure and retrograde fluid–rock interaction in white mica (Lago di Cignana, Western Alps)

open access: yesContributions to Mineralogy and Petrology, 2020
This study presents boron (B) concentration and isotope data for white mica from (ultra)high-pressure (UHP), subduction-related metamorphic rocks from Lago di Cignana (Western Alps, Italy).
R. Halama   +2 more
semanticscholar   +1 more source

Description and Dynamic Analyses of the 1935 Luchedu Rock Avalanche in Sichuan, China

open access: yesGeofluids, 2022
The Luchedu rock avalanche (LRA) that occurred in 1935 at the junction of Sichuan and Yunnan in Southwest China is a disaster chain of the rock slide, debris avalanche, and river blocking induced by heavy rainfall.
Jie Cui   +3 more
doaj   +1 more source

Provenance of sandstone layered in Injana Formation from Zawita and Dekala areas Northern of Iraq

open access: yesTikrit Journal of Pure Science, 2023
To interpret the provenance 0f Injana Formation,  20 sandstone samples of Injana Formation were collected  from Zawita and Dekala areas north Iraq (10 for each sections ), then  thin section have been done sildes.
Sarah A. Al-Ameri, Lafta S. Kadhim
doaj   +1 more source

TECTONOTHERMAL EVOLUTION OF THE ZAGAN METAMORPHIC CORE COMPLEX IN TRANSBAIKALIA AS A RESULT OF THE CRETACEOUS – PALEOCENE MONGOL-OKHOTSK POST-COLLISIONAL OROGEN DESTRUCTION

open access: yesГеодинамика и тектонофизика, 2023
Thermochronological reconstructions of the Zagan metamorphic core complex were carried out using samples from the central part of the core, mylonite zone detachment and lower nappe with U/Pb zircon dating, 40Ar/39Ar amphibole and mica dating, and apatite
M. M. Buslov   +3 more
doaj   +1 more source

Petrology and Tectonic Geophysics of Massive and Foliated Eclogites in the North Qilian Orogenic Belt: Changes in Mineral Composition, Oxygen Fugacity, and Fabric during Exhumation

open access: yesAdsorption Science & Technology, 2022
The North Qilian orogenic belt is a typical area of “cold” subduction of the early Paleozoic oceanic plate, forming a series of high pressure and low temperature metamorphic rock assemblages. Among them, eclogite is a kind of protolith, which is basaltic
Feng Wang, Daorong Zhou, Xunhua Zhang
doaj   +1 more source

GEOLOGICAL STUDY IN THE ILMENY STATE RESERVE DURING 2010–2020 [PDF]

open access: yesМинералогия, 2020
The paper presents the main results of isotopic-geochronological and mineralogicalgeochemical studies at the territory of the Ilmeny State Reserve over 2010–2020.
E.V. Medvedeva   +5 more
doaj   +1 more source

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