This thesis records the results of one of the studies currently in progress on various aspects of the geology of the Coastal Andean Batholith of Peru. In much the same manner as its counterparts in the Patagonian Andes and the North American Rockies (fig 1), the Coastal Andean Batholith is a complex of many spatially related but temporally distinct intrusive episodes. A suite of rock types is present which ranges from ultrabasic to adamellitic in character. A study of the mafic plutonic rocks was chosen because in other batholithic associations equivalent rock types to those found in Peru have received scant attention and are improperly understood. This possibly reflects the comparatively small volumes that these rocks . occuply relative to the intermediate and acid rocks in batholithic environments. Too often, it seems, the basic representatives are dismissed as potential basalt which somehow became trapped during its upward migration whereupon it crystallised early in the batholithic sequence. Moreoever, where reference is made to the presence of basic rocks it is often as part of a regiqnal study. As a consequence. the general emphasis in such accounts inclines towards the descriptive rather than the interpretive.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:587857 |
| Date | January 1976 |
| Creators | Regan, Peter Frederick |
| Contributors | Pitcher, W. S. |
| Publisher | University of Liverpool |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
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