Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6440951 | Lithos | 2013 | 14 Pages |
Abstract
Our preferred tectonic setting for the genesis of the Maqsad chromitites is in the context of subduction initiation in a forearc environment. We would argue on the basis of their geochemistry that they have not formed beneath a spreading ridge, despite the superficial similarity between their cr# and those of MORBs. In the absence of podiform chromitites in modern ridge environments and from 'truly MORB ophiolites' we propose that the very occurrence of podiform chromitites is a tectonic indicator of a subduction-related environment.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geochemistry and Petrology
Authors
Hugh Rollinson, Jacob Adetunji,