Is the Tinaquillo, Venezuela, "Pseudogabbro" metamorphic or magmatic?
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Abstract
The "pseudogabbro" associated with peridotite at Tinaquillo, Venezuela, is believed to be of magmatic rather than metamorphic origin principally because: (1) there are major mineralogic and compositional differences between the "pseudogabbro" and the most highly metamorphosed country rock; (2) rocks intermediate in compositional between peridotite and "pseudogabbro" are present; (3) augen of lamellar pyroxene which occur in the "pseudogabbro" but not in the country rock are of a kind found elsewhere rarely except in igneous rocks; (4) gabbroic rocks are associated with peridotite elsewhere in Venezuela and in the Carribbean region; (5) textural and structural features of the kind found in the Tinaquillo rocks are characteristic of alpine-type peridotite-gabbro complexes.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Is the Tinaquillo, Venezuela, "Pseudogabbro" metamorphic or magmatic? |
| Series title | Geological Society of America Bulletin |
| DOI | 10.1130/0016-7606(1961)72[1565:ITTVPM]2.0.CO;2 |
| Volume | 72 |
| Issue | 10 |
| Year Published | 1961 |
| Language | English |
| Publisher | Geological Society of America |
| Description | 5 p. |
| First page | 1565 |
| Last page | 1569 |
| Country | Venezuela |
| City | Tinaquillo |
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