Crockham Quarry

Site of Special Scientific Interest · 50.6148, -3.6346

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Also within

Devon County

Condition (Natural England)

Favourable (2)
UnitFeatureConditionArea (ha)Assessed
SX844807 — Favourable 11.14 2009-02-10
SX845807 — Favourable 2.54 2009-02-10

Geology & landscape

Mining / Industrial: Quarry · Geological Period: Carboniferous

Description

Crockham Quarry SSSI Description The site comprises the western exposures of a large working quarry developed in coarse greenstone. One of the main interests here is the exposure of the lower contact between a coarse, variably hydrothermally altered metadolerite and cleaved Lower Carboniferous argillites. The argillite is the only mildly adinolized and exhibits excellent thermal spotting and the development of prismatic andalusite. Elsewhere wedges of metasediment within the greenstone body are highly argillized due to later hydrothermal activity.