Chemical composition of ultrabasite and gabbro from the rift zones of the Arabian-Indian and Western Indian ridges
Fuente:
PANGAEA
Guardado en:
| Autor principal: | |
|---|---|
| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
1969
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1867168556102189056 |
|---|---|
| author | Chernysheva, Victoria I |
| author_facet | Chernysheva, Victoria I |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Results of petrographic studies of ultrabasite and gabbro from the rift zones of the Indian Ocean ridges are discussed using materials of R/V Vityaz Cruise 36. 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, which concludes the magmatic phase proper in rock mass formation accompanied by activity of residual intragranular liquid. Formation of ultrabasite in the rift zones is related to complicated processes. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_754462 |
| institution | PANGAEA |
| language | en |
| publishDate | 1969 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Chemical composition of ultrabasite and gabbro from the rift zones of the Arabian-Indian and Western Indian ridges 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 ultrabasite and gabbro from the rift zones of the Indian Ocean ridges are discussed using materials of R/V Vityaz Cruise 36. 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, which concludes the magmatic phase proper in rock mass formation accompanied by activity of residual intragranular liquid. Formation of ultrabasite in the rift zones is related to complicated processes. |
| title | Chemical composition of ultrabasite and gabbro from the rift zones of the Arabian-Indian and Western Indian ridges |
| 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.754462 |