Evolution of Fe redox state in serpentine during subduction

On the basis of Fe2+-Mg partition between coehisting garnet and clinopyroxene of eclogites in the Higasi-akaisi peridotite mass, both from the Gongen valley and from the main adit of the Akaisi mine, it is suggested that the crystallization temperatnre of the eclogites in this peridotite mass corresponds to that of lower amphibolite fades. The temperature thus estimated appears to be higher than that of surrounding metabasites, and eclogites enclosed therein. The chemical compositions of six pairs of gamet-clinopyroxene assemblage, including the new analyses of three pairs, are described in Table 1.

Peridotite

10.2465/ganko1941.59.1

Cite

Citations (2)

High Pressure Experimental Investigation of the Interaction between Partial Melts of Eclogite and Mantle Peridotite during Upwelling

AGU Fall Meeting Abstracts (2015)

Zsanett Pintér Anja Rosenthal D. J. Frost Catherine McCammon Heidi E. Höfer

Peridotite

Forsterite

Coesite

Source

Cite

Citations (2)

Subsolidus mineral assemblages in garnet-peridotite and eclogite compositions

International Kimberlite Conference Extended Abstracts: 2008 (2019)

M. J. O’Hara

Peridotite

10.29173/ikc897

Cite

Citations (0)

Variation in olivine crystal-fabrics and their seismic anisotropies in the Horoman peridotite complex, Hokkaido, Japan

Journal of Geodynamics (2023)

Kazuki Matsuyama Katsuyoshi Michibayashi

Peridotite

10.1016/j.jog.2023.102006

Cite

Citations (7)

Ultra-high pressure and associated minerals separated from eclogite and garnet peridotite sampled in the CCSD Main Hole

AGU Fall Meeting Abstracts (2004)

J. Yang Z. Zhang W. Bai Q. Fang Yunfei Ren

Peridotite

Source

Cite

Citations (0)

Ultrabasic-basic differentiation of mantle magmas and natural diamond-parental melts by evidence of physico-chemical experiments

Yu. А. Litvin Н. Е. Анашкина

Experimentally at 7 GPa phase relations in two sections of the system garnet peridotite–eclogite– carbonatite are studied in connection with the problem of physico-chemical conditions of differentiation of the upper mantle ultrabasic-basic magmas and formation of continuous series of peridotite–eclogite rocks as well as the syngenesis of diamond and primary inclusions of peridotitic and eclogitic parageneses. Diagrams of equilibrium and fractional crystallization of the boundary silicate multicomponent system peridotite–eclogite are constructed. As a result, a new effect of “peridotite–eclogite tunnel” is established. The tunnel provides formation of the continuous series of peridotite–eclogite rocks of the Earth’s upper mantle. Also, diagrams of equilibrium and fractional crystallization for the polythermal section peridotite30carbonatite70–eclogite35carbonatite65 are constructed. As a result, a combined action of the effects of peridotite–eclogite tunnel and carbonatization of peridotitic magnesian phases is recognized. The effects provide consecutive formation of the phases of peridotitic and eclogitic parageneses in the natural processes of diamond origin.

Peridotite

Ultramafic rock

Fractional crystallization (geology)

Source

Cite

Citations (1)

Effect of pressure on the kinetics of peridotite serpentinization

Physics and Chemistry of Minerals (2020)

Ruifang Huang Weidong Sun Xing Ding Yusheng Zhao M. Song

Peridotite

Pyroxene

Brucite