The behaviour of trace elements in the evolution of carbonatites

Saved in:
Authors:Hamilton, D. L.; Bedson, P.; Esson, J.
Author Affiliations:Primary:
Univ. Manchester, Dep. Geol., Manchester, United Kingdom
Volume Title:Carbonatites; genesis and evolution
Volume Authors:Bell, Keith, editor
Source:Carbonatites; genesis and evolution, edited by Keith Bell, p.405-427. Publisher: Unwin Hyman, London, United Kingdom. ISBN: 0-04-445068-0
Publication Date:1989
Note:In English. 7 refs.; illus. incl. 4 tables
Summary:Distribution coefficients (KD) of the trace elements Ba, Ce, Cr, Cu, Eu, Gd, Hf, La, Lu, Sm, Ta, Yb and Zr between phonolite/sodium-rich carbonate, and nephelinite/calcium-rich carbonate liquid pairs have been determined in the P-T range 1-6 kbar and 1250 degrees C. The enrichment of most of these elements into the carbonate liquid is favoured by high P, low T, and increased polymerization of the silicate conjugate melt. At P-T conditions experienced by a carbonated alkali-rich magma in the upper mantle, most of the above elements would be concentrated into the carbonate melt of any carbonate/silicate immiscible pair of liquids by a factor greater than or equal to 10. [R.E.S.]
Subjects:Alkalic composition; Carbonatites; Composition; Enrichment; Experimental studies; Genesis; High pressure; Igneous rocks; Low temperature; P-T conditions; Polymerization; Pressure; Temperature; Trace elements
Abstract Numbers:90M/2158
Record ID:1989078445
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
Tags: Add Tag
No Tags, Be the first to tag this record!
Be the first to leave a comment!
You must be logged in first