Mahoney, J. ; Macdougall, J. D. ; Lugmair, G. W. ; Murali, A. V. ; Sankar Das, M. ; Gopalan, K. (1982) Origin of the Deccan Trap flows at Mahabaleshwar inferred from Nd and Sr isotopic and chemical evidence Earth and Planetary Science Letters, 60 (1). pp. 47-60. ISSN 0012-821X
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/001282...
Related URL: http://dx.doi.org/10.1016/0012-821X(82)90019-X
Abstract
The Deccan flows at Mahabaleshwar are divisible into a lower and an upper group, based on Nd and Sr isotopic ratios, which define two correlated trends. This distinction is supported by incompatible element ratios and bulk compositions. The data reflect contamination in a dynamic system of magmas from an LIL-depleted, εJUV ≥+8 mantle by two different negative εJUV endmembers, one undoubtedly continental crust, the other either continental crust or enriched mantle. The depleted mantle source, anomalously high in (87Sr/86Sr), may have been in the subcontinental lithosphere or a region of rising Indian Ocean MORB mantle.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 13520 |
| Deposited On: | 12 Nov 2010 15:25 |
| Last Modified: | 01 Jun 2011 11:45 |
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