Determination of the rate of emplacement of batholiths is complicated by the complexity of a process involving segregation, intrusion and congelation, and by a lack of knowledge of the nature of granite magma. Times of uprise and freezing of individual pulses are of the order of a million years, possibly much longer for segration; rates which are similar to that of sea floor spreading. The construction of a composite batholith takes some 50–70 m.y. and although distinct episodes may be recognized locally it is likely to be, overall, a sensibly continuous process for a single, linear, consanguineous batholith such as that of coastal Peru.

This content is PDF only. Please click on the PDF icon to access.

First Page Preview

First page PDF preview
You do not currently have access to this article.