Wehrlite xenoliths and petrogenetic implications, Hosséré Do Guessa volcano, Adamawa plateau, Cameroon
Published in Open Geosciences
Wehrlite xenoliths and petrogenetic implications, Hosséré Do Guessa volcano, Adamawa plateau, Cameroon
Thermodynamic Modeling of the Formation of Corundum-Bearing Metasomatic Rocks in the Belomorian Mobile Belt, Fennoscandi...
Published in Petrology
bstractThe mineral zoning of corundum-bearing rocks of the Belomorian mobile belt, whose genesis remains controversial, has been studied at one of the typical occurrences: Khitoostrov. Based on the estimates of the P–T parameters of the formation of corundum-bearing rocks by the multiequilibrium thermobarometry method, pseudosections were construct...
On the origin of vesuvianite-rich rodingites from the Western Carpathians, Slovakia
Rodingite represents a particular metasomatic rock type that occurs as dykes or lenses in association with serpentinized ultramafic rocks and typically consists of Ca-rich, often hydrated silicate minerals. Rodingites have been recognized as a source of information on fluid compositions and their circulation in both ocean floor and subduction envir...
Metasomatic Epidote in Amphibolite-Replacing Rocks: An Indicator of Tectonic Processes Related to the Exhumation of Rock...
Published in Geochemistry International
Abstract—The dominant rocks in the area between the village of Kovda and township of Zelenoborskii in northern Karelia, Russia, are amphibole–biotite and biotite plagiomigmatites, which develop after amphibolites. These plagiomigmatites contain epidote that replaces the amphibole and biotite and is found in reaction relations with these minerals. T...
Halogen heterogeneity in the subcontinental lithospheric mantle revealed by I/Br ratios in kimberlites and their mantle ...
Published in American Mineralogist
To investigate halogen heterogeneity in the subcontinental lithospheric mantle (SCLM), we measured the concentrations of Cl, Br, and I in kimberlites and their mantle xenoliths from South Africa, Greenland, China, Siberia, Canada, and Brazil. The samples can be classified into two groups based on halogen ratios: a high-I/Br group (South Africa, Gre...
Ca-metasomatism of lawsonite eclogite-facies metasediment evidence high-pressure intra-slab C-O-H-S fluid transfer
International audience
An evolutionary system of mineralogy, Part V: Aqueous and thermal alteration of planetesimals (~4565 to 4550 Ma)
Published in American Mineralogist
Part V of the evolutionary system of mineralogy explores phases produced by aqueous alteration, metasomatism, and/or thermal metamorphism—relicts of ancient processes that affected virtually all asteroids and that are preserved in the secondary mineralogy of meteorites. We catalog 166 historical natural kinds of minerals that formed by alteration i...
Potassium distribution and isotope composition in the lithospheric mantle in relation to global Earth’s reservoirs
Published in Geochimica et cosmochimica acta
Recent analytical advances have provided means to measure potassium (K) isotopes in various terrestrial materials, but little is known about K distribution and stable isotope composition in the lithospheric mantle because of: (a) common low K abundances, (b) potential contamination and alteration, (c) diversity of mantle rocks and minerals hosting ...
Metamorphic origin of anastomosing and wavy laminas overprinting putative microbial deposits from the 3.22 Ga Moodies Gr...
Anastomosing branching and wavy laminae in quartz-rich sandstones of the 3.22 Ga Moodies Group in the Barberton Greenstone Belt (BGB), South Africa, have been extensively described as fossilized microbial mats developed in terrestrial to marine transitional environments. Petrological and geochemical characteristics of a ~ 350 m thick Moodies succes...
Metamorphism of the Central Bundelkhand Greenstone Complex, Indian Shield: Mineral Compositions, Paragenesises, and P–T ...
Published in Petrology
AbstractThe paper presents data acquired on epigenetic processes in rocks of the Meso- to Neoarchean greenstone complex of the Bundelkhand Craton of the Indian Shield. The study was focused on felsic and mafic metavolcanic and mafic–ultramafic rocks of the Central Bundelkhand Greenstone Complex (CBGC). The rocks contain metamorphic mineral assembla...
