Chemical composition of ultrabasites and gabbro from rift zones of the Indian Ocean
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
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PANGAEA
1969
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| _version_ | 1867171360435863552 |
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| author | Chernysheva, Victoria I |
| author_facet | Chernysheva, Victoria I |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_754346 |
| institution | PANGAEA |
| language | en |
| publishDate | 1969 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Chemical composition of ultrabasites and gabbro from rift zones of the Indian Ocean Chernysheva, Victoria I Archive of Ocean Data; ARCOD; Dredge; DRG; Vityaz (ex-Mars); Vityaz-33; Vityaz-36; VITYAZ4822-DR; VITYAZ5319-DR; VITYAZ5324-DR 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. |
| title | Chemical composition of ultrabasites and gabbro from rift zones of the Indian Ocean |
| topic | Archive of Ocean Data; ARCOD; Dredge; DRG; Vityaz (ex-Mars); Vityaz-33; Vityaz-36; VITYAZ4822-DR; VITYAZ5319-DR; VITYAZ5324-DR |
| url | https://doi.org/10.1594/PANGAEA.754346 |