yesterday water worn pebbles from a field by the river Cole
and today three beer glasses in a hedge
(I recently broke two so I needed the replacements)
Worcestershire and Warwickshire geological map
I live between Marston and Coleshill on the upper trias
see also Geology of Great Britain, UK - Introduction and maps
and Great Packington is on
18 Permian - Sandstone and Conglomerate
nb 19 Coal Measures which underlie the industrialisation of the midlands
RHAETIC - LoveToKnow Article on RHAETIC: "In England the Rhaetic formation occurs as a thin but constant series of beds at the base of the Lias and above the Keuper marts. The upper part, often called the White Lias, is a series of thin bedded shales, limestone and marls, 1 to 25 ft. thick; the lower portion ,consists mainly of dark shales, sometimes with very perfect lamination paper shales.
Below there are beds of grey and tea-green marls which are now usually regarded as the topmost Keuper beds,"
marl or bog lime, soil, essentially clay mixed with carbonate of lime, highly valued as a dressing or fertilizer. It crumbles rapidly and easily. Marl in which the lime is in the form of invertebrate shells is called shell marl
In geology, keuper refers to the third or uppermost subdivision of the Triassic system. The name is a local miners term of German origin;