Prince Madog Cruise 37/06, POL Coastal Observatory cruise 41, 13-15 December 2006

Marine Sciences

Knight, Phil J.

Proudman Occeanographic Laboratory

学科分类：海洋学与技术

来源: NERC Open Research Archive

【 摘 要 】

This report describes the results of a petrographic and X-ray diffraction study of a single pelite sample collected as part of the geological survey of the Fishguard, Wales 1:50k sheet 210. A Kubler Index of 0.41 from XRD analysis indicates that the pelite has just reached the low anchizone grade of low grade metamorphism. Backscattered scanning electron microscopy of a polished thin section of the pelite reveals evidence of sedimentary lamination, a penetrative cleavage and later Fe-oxide veining. Such findings are in keeping with previous illite crystallinity surveys of the Welsh Basin.