Sedimentary and igneous trends on AFM diagrams.

Robinson, D. and Leake, B. E. 1975. Sedimentary and igneous trends on AFM diagrams. Geological Magazine 112 , pp. 305-307. 10.1017/S0016756800047051

Full text not available from this repository.

Abstract

It is pointed out that some chemically analysed sedimentary rock series when plotted on AFM diagrams (A = Na2O + K2O; F = total iron as FeO; M = MgO) partly mimic trends generally considered characteristic of igneous variation, especially the calc-alkali trend. Although the scatter in sedimentary rock plots is generally greater than that given by igneous rocks this is not necessarily so for calc-alkali suites often show considerable scatter. These observations should be considered when deducing the origin of highly metamorphosed gneisses and quartzo-feldspathic rocks that might be meta-arkoses, meta-granites or meta-volcanic rocks.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Earth and Environmental Sciences
Publisher:	Cambridge University Press
ISSN:	0016-7568
Last Modified:	16 Jul 2020 10:45
URI:	https://orca.cardiff.ac.uk/id/eprint/133107

Citation Data

Cited 4 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item