Geology Reference
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(b)
(c)
Figure 2.1.
Sheet structure (b) exposed in granite hill in the Pindo, Galicia, Spain, and showing increase in
radius of sheet fractures with depth; (c) on granite bornhardt in the western Sahara, Mauritania
(Peel, 1941).
of the partings, which are, therefore, small displacement faults. Sheet structure is used to denote
the massive slabs defined by the sheeting fractures.
2.2
DESCRIPTION AND CHARACTERISTICS
Sheet structure consists of thick arcuate slabs defined by sheet fractures (Figs 2.1 and
2.3)
.
The
slabs are up to 10 m thick, and are arbitrarily defined as being more than about 0.2 m thick (slabs
