Open and closed compositional data in petrology |
| |
Authors: | E H Timothy Whitten |
| |
Institution: | (1) Lower Bonehill Farm, Widecombe-in-the-Moor, Near Newton Abbot., TQ13 7TD Devon, England |
| |
Abstract: | The nature of chemical and modal closed and open compositional data for igneous petrology is reviewed. Chemical analyses of Ben Nevis (Ontario) Archaean volcanic rocks support earlier assertions that major- and trace-element g/100 cc igneous-rock data usually comprise open compositional variables which, unlike traditional closed constant-sum weight percentages, are not constrained by closure. |
| |
Keywords: | percentage data constant sum weight-per-unit volume specific gravity |
本文献已被 SpringerLink 等数据库收录! |
|