Erin Formation
The sandstones of the Erin Formation are generally well sorted and range from fine
to medium grained, the former grain size predominating. The sandstones are massive and alternate with subordinate
blue-grey arenaceous clays. Bands of siltetone, lignite and porcellanite are common. Numerous references have been
made to such sedimentary structures as current-bedding, graded-bedding, cross-bedding and slump structures in descriptions
of outcrops.
The thickness of the formation exceeds 4,000 feet in the centre of the Erin Syncline.
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THE GEOLOGICAL SOCIETY
OF TRINIDAD & TOBAGO
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