Geography & Geosciences (Previous name for currents schools of Earth & Environmental Sciences and ...): Recent submissions
Now showing items 16-20 of 157
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Mid-crustal geodynamics of the southern central zone, Damara Orogen, Namibia
(University of St Andrews, 1997-12) - ThesisTwo areas of well exposed mid-crustal structures in the axial zone of the Pan-African Damaran orogenic belt show that basement has formed domes which have amoeboid forms on the scale of tens of km with steep sided overturned ... -
A petrogenetic study of harrisite in the Isle of Rhum Pluton, Scotland
(University of St Andrews, 1975-03) - ThesisThere is textural evidence in the Rhum pluton for crystallization of layered ultrabasic rocks ('harrisite') under conditions of massive olivine supersaturation. Some of these rocks are comb layered. This field, petrographic ... -
Petrological studies of Devonian rocks in Scotland and cretaceous rocks in Canada
(University of St Andrews, 1985-07) - ThesisSedimentological, petrological and geochemical studies have been carried out to analyse the process of calcretization and to understand the influence of environment of deposition on sandstone diagenesis. The sediments ... -
Testing for compositional convection in silicate melts : crystal growth experiments and a petrographic study of a differentiated ring dyke
(University of St Andrews, 1994-07) - ThesisConvection in magma chambers, driven by compositional density differences, is thought to be a major process in fractionation of liquid from crystals in the differentiation of magmas. Compositional convection has been tested ... -
A petrological investigation of the xenolithic ultrabasic dykes of the Cuillins and the Strathaird Peninsula, Isle of Skye
(University of St Andrews, 1966) - ThesisThe Tertiary ultrabasic dykes of the Cuillins and the Strathaird peninsula are studied and classified on the bases of their content of cognate xenoliths and textures. Two principal types are, recognised, the Coire Lagan ...