Abstract Devolatilization of subducting lithologies liberates COH-fluids. These may become partially sequestered in peridotites the slab and overlying forearc mantle, affecting cycling volatiles fluid mobile elements subduction zones. Here we assess magnitudes, timescales mechanism channelized injection COH-fluids doped with $${\mathrm{Ca}}_{\mathrm{aq}}^{2+}$$ <mml:math xmlns:mml="http://www.w...

Introduction: On Earth δCl = ~0 ± 5 ‰ [1]. For lunar rocks elevated δCl values of up to 35 ‰ have been reported in apatites [1,2]. The initial study interpreted the elevated δCl in lunar rocks as a result of metal chlorides degassing in low-H2O environments [1]. Additional data [3,4] have shown high-δCl values in samples with apatite containing appreciable amounts of H2O (>2000 ppm). Metasomati...

Hibonite-(Fe), (Fe,Mg)Al12O19, is the Fe2+-dominant analog of hibonite CaAl12O19, discovered in a highly altered Ca-,Al-rich refractory inclusion from the Allende meteorite. It occurs as scattered micrometer-sized single crystals within an aggregate of hercynite (Fe,Mg)Al2O4, adjacent to nepheline, ilmenite, ferroan spinel, perovskite, and hibonite. The mean chemical composition determined by e...

Abstract We present mineralogical and geochemical compositions of mantle xenoliths from two Cenozoic basalt localities the northeastern North China Craton. These include lherzolite, harzburgite, websterite. They are generally fertile in major elements different typical cratonic lithosphere, which is consistent with previous hypotheses regarding craton destruction. The ratios 87Sr/86Sr (La/Yb)N ...

almabulage complex is located in the north of asadabad city, northwestern hamedan province, in sanandaj-sirjan structural zone. the complex includes several types of low-grade metamorphosed rocks with various protoliths as well as two intrusion having different chemical compositions of synogranite and gabbro. the synogranite intrusion rock has perthite and granophyric co-growths textures and au...

A person spends most of his life in rooms built from various building materials; therefore, the optimization human environment is an important and complex task that requires interdisciplinary approaches. Within framework new theory geomimetics science materials, concepts technogenic metasomatism, affinity microstructures, possibilities creating composites respond to operational loads can self-h...