MERCIAN Geologist

VOLUME 17 PART 2 AUGUST 2009 Geological Society Contents President Vice-President Profile – Tim Colman 70 Tim Colman John Travis From the Archives 71 Secretary Treasurer Janet Slatter Colin Bagshaw Geobrowser 72 Editorial Board The Record 74 Tony Waltham Andy Howard John Carney Tony Morris Jonathan D. Radley 75 Alan Filmer Gerry Slavin The geological evolution of Warwickshire Council David Bate Duncan Short Michael J. Czajkowski 86 Paul Guion Gerry Slavin Amber from the Baltic Richard Hamblin Ian Sutton Sue Miles Neil Turner Trevor D. Ford and Bernard O’Connor 93 Judy Rigby Geoff Warrington A vanished industry: coprolite mining Gerry Shaw John Wolfe Christopher J. Duffin 101 Correspondence Society Secretary, 100 Main Street, Records of warfare...embalmed in the everlasting Long Whatton, Loughborough LE12 5DG hills: a history of early coprolite research 01509 843297 [email protected] Mercian Geologist Editor, Peter Worsley 112 11 Selby Road, NG2 7BP The physical geology of beavers 0115 981 3833 [email protected] Mercian Geologist is printed by John Browns, Reports and is published by the East Midlands Geological Society. Members’ Evening, 2008 122 No part of this publication may be reproduced in printed or electronic medium without the prior consent of the Society. Nottingham’s Castle Rock: Tony Waltham 128 © 2009 East Midlands Geological Society Registered Charity No. 503617 Nag’s Head caves: Tony Waltham 129 Cave rock fall: Tony Waltham & Chris Rayner 130 Front cover: A newly cleared exposure alongside the railway at Colwick Woods, near Nottingham, with Great Fen Project: Tony Waltham 131 inter-bedded red shales and siltstones of the Gunthorpe Wollaton Hall Museum: Neil Turner 132 Formation, part of the Triassic Mercia Mudstone Group. The well-developed thin bedding reflects deposition Lecture – Salt terrains in Iran: Tony Waltham 133 from flash floods flowing into temporary lakes in a Crags of Sutton Knoll: Richard Hamblin 136 semi-arid alluvial basin, perhaps like parts of the Lake Book Reviews 138 Eyre Basin in modern Australia. Back cover: (clockwise from top) Chrome Hill reefs, Supplement Upper ; Ladybower Reservoir from Edge; Reynard’s Cave, Dovedale; Winnats Pass, Geological Setting of the Lead Mines in Castleton; Lud’s Church landslip fissure, Dane Valley. Lathkill Dale and the Wye Valley All cover photos by Tony Waltham. by Trevor D. Ford