Ivan P. Savov

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Richard J. Arculus, Osamu Ishizuka, Kara A. Bogus, Michael Gurnis, Rosemary HickeyVargas, Mohammed H. Aljahdali, Alexandre N. Bandini-Maeder, Andrew P. Barth, Philipp A. Brandl, Laureen Drab, Rodrigo do Monte Guerra, Morihisa Hamada, Fuqing Jiang, Kyoko Kanayama, Sev Kender, Yuki Kusano, He Li, Lorne C. Loudin, Marco Maffione, Kathleen M. Marsaglia, Anders(More)
Harzburgitic xenoliths cut by pyroxenite veins from Avachinsky volcano, Kamchatka, are derived from the sub-arc mantle and record element transfer from the slab to the arc. Olivine and orthopyroxene in the harzburgites have Li isotopic compositions (dLi = ?2.8 to ?5.6) comparable to estimates of the upper mantle (dLi * ?4 ± 2). The pyroxenite veins, which(More)
a Institute of Earthquake and Volcano Geology, Geological Survey of Japan, AIST, Central 7, 1-1-1, Higashi, Tsukuba, Ibaraki, 305-8567, Japan b Japan Agency for Marine-Earth Science and Technology, 2-15 Natsushima, Yokosuka, Kanagawa, 237-0061, Japan c Earth and Environment Department, Florida International University, Modesto Maidique Campus, AHC5-394,(More)
The use of volcanic ash layers for dating and correlation (tephrochronology) is widely applied in the study of past environmental changes. We describe the first cryptotephra (non-visible volcanic ash horizon) to be identified in the Amazon basin, which is tentatively attributed to a source in the Ecuadorian Eastern Cordillera (0-1°S, 78-79°W), some 500-600(More)
Serpentinization-fueled systems in the cool, hydrated forearc mantle of subduction zones may provide an environment that supports deep chemolithoautotrophic life. Here, we examine serpentinite clasts expelled from mud volcanoes above the Izu-Bonin-Mariana subduction zone forearc (Pacific Ocean) that contain complex organic matter and nanosized Ni-Fe alloys.(More)
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