The aim of the investigation was to study variations within two of the many plutons which make up the composite Coastal Batholith of Central Peru. The variations were believed to be the result of differentiation and the author wished to establish whether the process was solely operational prior to emplacement or took place 'in situ' during the period preceding the total consolidation of the magma. Response surface techniques were used on partial whole-rock chemical analyses from the Canas and Puscao plutons to establish the three dimensional nature of the chemical variations. The Canas pluton was selected because of its apparent homogeneity and lack of contamination by assimilation of country rock, which suggest that the magma solidified without differentiation once it had been emplaced. By contrast the Puscao pluton was chosen because it showed signs of large scale layering in the field and was believed to have been contaminated by xenolithic roof material. As a result of careful statistical assessment of the resulting analyses it was possible to isolate the various scales of variation within each pluton.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:587856 |
| Date | January 1973 |
| Creators | Taylor, William Proctor |
| Publisher | University of Liverpool |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
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