Deformation-induced decomposition of enstatite in mantle peridotite and its role in partial melting and chromite ore formation

D. E. Saveliev; V. N. Puchkov; S. N. Sergeev; I. I. Misabirov

doi:10.1134/S1028334X17090161

Deformation-induced decomposition of enstatite in mantle peridotite and its role in partial melting and chromite ore formation

Авторлар: Saveliev D.E.¹, Puchkov V.N.¹, Sergeev S.N.², Misabirov I.I.²
Мекемелер:
1. Institute of Geology, Ufa Science Center
2. Institute of Problems of Metal Superplasticity, Ufa Science Center
Шығарылым: Том 476, № 1 (2017)
Беттер: 1058-1061
Бөлім: Geochemistry
URL: https://journals.rcsi.science/1028-334X/article/view/190826
DOI: https://doi.org/10.1134/S1028334X17090161
ID: 190826

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Аннотация

Deformed orthopyroxene grains are studied in detail in mantle peridotite. It is shown that deformation of enstatite is accompanied by its decomposition with the formation of low-temperature phases (pargasite, Fe-rich olivine) and restite represented by depleted enstatite, forsterite, and small newly formed chrome spinellide grains. The role of plastic deformation in initiation of partial melting of peridotite and in the formation new chrome spinellide grains is discussed.