Clochodrick Stone

Site of Special Scientific Interest · 55.8173, -4.5973

Also within

Renfrewshire County

Condition (NatureScot)

Favourable (1)
UnitFeatureConditionArea (ha)Assessed
F1 Quaternary of Scotland Favourable 2009-02-26

Geology & landscape

Geological Feature: Erratic · Rock Type: Basalt

Landscape processes: Glacial, Volcanic / Igneous

Description

CLOCHODRICK STONE The Clochodrick Stone, lying approximately 3 km north-east of Lochwinnoch, is an unusually large glacial erratic boulder composed of trachytoid, porphyritic olivine-basalt – a relatively rare alkaline volcanic rock type consisting of large crystals set in a mass of fine material. It is still in situ where a former glacier deposited it and it is nationally important as one of the best lowland examples representative of this type of glacial phenomenon.