CRYSTALLIZATION OF TESCHENITE FROM LUGAR SILL AYRSHIRE

被引：7

作者：

PHILLIPS, WJ

机构：

[1] Department of Geology, University College of Wales, Llandinam Building, Aberystwyth

来源：

GEOLOGICAL MAGAZINE | 1968年 / 105卷 / 01期

关键词：

D O I：

10.1017/S0016756800046458

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Twelve stages in the crystallization of the teschenite are defined by the commencement or cessation of crystallization of particular minerals. Ocellar structures, outlined by tangentially arranged biotite flakes, developed in liquid pockets after the sill had begun to consolidate, due to the coalescence of crystalline masses. It is thought that these ocellar structures were formed by the growth of gas bubbles and that this caused the expansion and fracturing of the partially consolidated sill. It is argued that the separation of the gas phase was the result of a retrograde increase in the vapour pressure during crystallization. © 1968, Cambridge University Press. All rights reserved.

引用

页码：23 / &