volume 14, issue 1, P1-27 1978
DOI: 10.1144/sjg14010001
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Abstract: SYNOPSISThe Dippin sill, which is emplaced into the Triassic sediments of SE Arran, is a basic alkaline intrusion of Tertiary age within which four main rock types have been identified. Examination of vertical sections through the sill, including two drill holes, indicates that it consists essentially of a thick central crinanite unit bordered by thin marginal teschenite facies with minor units of augite teschenite and basic pegmatite occurring at various levels. The compositions of crinanites, marginal tesch…

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