Geology Reference
In-Depth Information
(a)
(b)
Figure 10.7
(a) Mode 1 (tensile) primary cooling joints in grey diorite marked
out by pink granophyre intruded while both magmas were rheologically in a
fluid-like state (note cuspate contact). (b) Type II shear joint comprising quartz-
pegmatite displacing an earlier sheared quartz vein in deformed granite, Peru.
