Protoliths and phase petrology of whiteschists [PDF]
Contributions to Mineralogy and Petrology, 2018 Whiteschists appear in numerous high- and ultrahigh-pressure rock suites and are characterized by the mineral assemblage kyanite+talc (+-quartz or coesite).
de Capitani, Christian +2 more
core +5 more sources
The protoliths of central Himalayan eclogites
GSA Bulletin, 2021 Abstract Eclogites represent the highest pressure conditions yet observed from rocks thrust to the surface in the central Himalaya. A detailed investigation of the protolith nature of these eclogites is needed to better understand pre-Himalayan geological history.
Guibin Zhang +7 more
openaire +4 more sources
A Protolith Reconstruction Model (PRM) for Metabasalt: Quantitative Protolith and Mass Transfer Estimation Based on Machine-learning Approach [PDF]
, 2021 Abstract Mass transfer in rocks provides a direct record of fluid–rock interaction within the Earth, including metamorphism, metasomatism, and hydrothermal alteration. However, mass transfer analyses are usually limited to local reaction zones where the protoliths are evident in outcrops (1–100 m in scale), from which regional mass transfer can
Satoshi Matsuno +3 more
openaire +1 more source
Large Igneous Provinces (LIPs) and Anoxia Events in “The Boring Billion”
Geophysical Monograph Series, Page 449-486., 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.
Shuan‐Hong Zhang +4 more
wiley +1 more source
Chemical identification of metamorphic protoliths using machine learning methods [PDF]
Computers & Geosciences, 2019 Abstract The fundamental origins of metamorphic rocks as sedimentary or igneous are integral to the proper interpretation of a terrane’s tectonic and geodynamic evolution. In some cases, the protolith class cannot be determined from field relationships, texture, and/or compositional layering.
Hasterok, D. +3 more
openaire +2 more sources
Sulfur loss from subducted altered oceanic crust and implications for mantle oxidation [PDF]
, 2020 © The Author(s), [year]. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Walters, J. B., Cruz-Uribe, A. M., & Marschall, H. R.
Cruz‐Uribe, Alicia M. +2 more
core +1 more source
Geochemistry and metallogeny of Neoproterozoic pyrite in oxic and anoxic sediments [PDF]
, 2018 The Neoproterozoic Dalradian Supergroup contains widespread diagenetic sulphides present as pyrite. The sulphides occur in both carbonaceous shales and glacial diamictites, that were deposited in relatively reducing and oxidising conditions respectively.
Armstrong, J. +5 more
core +2 more sources
The transition zone as a host for recycled volatiles: Evidence from nitrogen and carbon isotopes in ultra-deep diamonds from Monastery and Jagersfontein (South Africa) [PDF]
, 2017 Sublithospheric (ultra-deep) diamonds provide a unique window into the deepest parts of Earth's mantle, which otherwise remain inaccessible. Here, we report the first combined C- and N-isotopic data for diamonds from the Monastery and Jagersfontein ...
Gurney, J.J. +6 more
core +1 more source
Magnetic characteristics of the Ság-hegy volcanic complex, little Hungarian Plain [PDF]
, 2006 The Ság-hegy volcanic complex is located in the little Hungarian Plain Volcanic Field (LHPVF). An 39Ar/ 40Ar geochronolgy gave an isochron age of 5,42 ±0,06 My for the Ság- hegy (Wijbrans et al. 2004).
Auer, Andreas +5 more
core +2 more sources
Creep cavitation bands control porosity and fluid flow in lower crustal shear zones [PDF]
, 2015 Shear zones channelize fluid flow in Earth’s crust. However, little is known about deep crustal fluid migration and how fluids are channelized and distributed in a deforming lower crustal shear zone.
Fusseis, F +3 more
core +2 more sources