Results 11 to 20 of about 712,455 (341)

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

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

西南日本の熱変成超苦鉄質岩体中のかんらん石と輝石の組成変化に関する覚書 [PDF]

open access: yes, 2010
This short article presents some diagrams showing the compositional variations of primary and metamorphic olivine, orthopyroxene and clinopyroxene in peridotites and serpentinites from thermally metamorphosed ultramafic complexes in SW Japan. In contrast
Nozaka, Toshio
core   +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

Metamorphic Rock-Hosted Orogenic Gold Deposit Type as a Source of Langkowala Placer Gold, Bombana, Southeast Sulawesi [PDF]

open access: yes, 2011
DOI: 10.17014/ijog.v6i1.114In 2008, placer gold was discovered in Langkowala area (Bombana Regency), Southeast Sulawesi, Indonesia, and more than 60,000 traditional gold miners in the early 2009 have been operating by digging vertical pits and panning ...
Fadlin, F. (Fadlin)   +3 more
core   +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

Failure Mechanism of Anti-Dip Layered Soft Rock Slope under Rainfall and Excavation Conditions

open access: yesSustainability, 2023
The phenomenon of toppling deformation and failure is common in slopes with anti-dip structures, especially in soft metamorphic rock slopes. This paper aims to explore the instability mechanism of anti-dip layered soft metamorphic rock landslides. Taking
Jun Jia   +5 more
semanticscholar   +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

Late Precambrian U-Pb titanite age for peak regional metamorphism and deformation (Knoydartian orogeny) in the western Moine, Scotland [PDF]

open access: yes, 2003
There has been controversy over the number and timing of orogenies in the Precambrian Moine block in the Scottish Caledonides since the earliest radiometric dating in the 1960s. This work challenges a recent hypothesis, that this sector of the Laurentian
Evans, J.A., Tanner, P.W.G.
core   +1 more source

Detrital zircon SHRIMP U-Pb age study of the Cordillera Darwin Metamorphic Complex of Tierra del Fuego : sedimentary sources and implications for the evolution of the Pacific margin of Gondwana [PDF]

open access: yes, 2010
The Cordillera Darwin Metamorphic Complex in the southernmost Andes includes a basement of probable Palaeozoic age, a mid-Jurassic and younger volcano-sedimentary cover, and a suite of Jurassic granites, all of which were jointly metamorphosed during the
Calderon, M.   +6 more
core   +1 more source

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