| dc.contributor.author |
Das, S.K. |
|
| dc.contributor.author |
Mukherji, S. |
|
| dc.date.accessioned |
2018-10-01T12:20:25Z |
|
| dc.date.available |
2018-10-01T12:20:25Z |
|
| dc.date.issued |
1997 |
|
| dc.identifier.citation |
Journal Of The Geological Society Of India, 50(1), 1997: 31-39 |
|
| dc.identifier.issn |
0016-7622 |
|
| dc.identifier.uri |
http://ore.immt.res.in/handle/2018/660 |
|
| dc.description.abstract |
The basic igneous complex of Mayurbhanj is a differentiated suite composed of harzburgite, gabbronorite, leucogabbronorite and anorthosite. EPMA of the coexisting oxides in the rock samples reveal that magnetite-ilmenite have re-equilibrated between 770 degrees C and less than 500 degrees C and fo(2) of 10(-16) to less than 10(-25). Ilmenite granules and thick lamellae have identical composition and approach pure FeTiO3. The chromian spinel-olivine geothermometry in harzburgite suggests a temperature of 1263 degrees C. The pyroxene geothermometric data in gabbroic rocks indicate equilibration temperature range of 819 degrees C to 1071 degrees C. The thermometric data indicate that the magnetite and ilmenite equilibrated at lower temperature than the coexisting pyroxenes for a particular rock sample. |
|
| dc.language |
en |
|
| dc.publisher |
Geological Society Of India |
|
| dc.relation.isreferencedby |
SCI |
|
| dc.rights |
Copyright [1997]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository. |
|
| dc.subject |
Geosciences |
|
| dc.title |
Geothermometric and oxygen fugacity studies of Mayurbhanj basic igneous complex |
|
| dc.type |
Journal Article |
|
| dc.affiliation.author |
CSIR-IMMT, Bhubaneswar 751013, Odisha, India |
|