Chemical composition of ultrabasites and gabbro from rift zones of the Indian Ocean

Results of petrographic studies of ultrabasites and gabbro from rift zones of the Indian Ocean are discussed using materials of Cruise 36 of R/V Vityaz. Rocks sampled from two sites 2700 km apart are close to each other in their composition. Petrographically ultrabasic rocks are divided into four subgroups: I - dunite; II - harzburgite, serpentinite; III - plagioclase lherzolite; and IV - metamorphically altered rocks. Petrographic description and chemical composition of basic rock varieties are presented as well as description of rock-forming minerals and their optical properties. Formation of pyroxene and plagioclase is shown to be related to autometasomatosis. Formation of ultrabasite in rift zones is related to complicated processes.

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Cite this as

Chernysheva, Victoria I (1969). Dataset: Chemical composition of ultrabasites and gabbro from rift zones of the Indian Ocean. https://doi.org/10.1594/PANGAEA.754346

DOI retrieved: 1969

Additional Info

Field Value
Imported on November 30, 2024
Last update November 30, 2024
License CC-BY-3.0
Source https://doi.org/10.1594/PANGAEA.754346
Author Chernysheva, Victoria I
Given Name Victoria I
Family Name Chernysheva
Source Creation 1969
Publication Year 1969
Resource Type application/zip - filename: Chernysheva-1969
Subject Areas
Name: Oceans

Related Identifiers
Title: Ultrabasite and gabbro from the rift zones of the Arabian-Indian and Western Indian underwater ridges
Type: DOI
Relation: IsSupplementTo
Year: 1969
Source: Oceanology
Authors: Chernysheva Victoria I .