The Edinburgh Geologist
Issue no 27

Editor: Andrew Highton

Published November 1993

Cover illustration: the cover shows Pterichthyodes milleri, a Middle Old Red Sansdtone fish collected from the Achanarras quarry, Caithness. From the Royal Museum of Scotland collection (RSM 1897.55.3). BGS photograph MNS 3884, reproduced with the permission of the Director of the Geological Survey. IPR/26-2C British Geological Survey. © NERC. All rights reserved.

Contents

page

Editorial

1

The Old Red Sandstone by John Hampton

4

Geology from a bicycle: Yellowstone National Park by Joanne Cavill

12

Strange Earth No 12: Flexible sandstone by Bill Baird

17

Strange Earth No 13: Singing sands by Bill Baird

18

Strange Earth No 14: Tektites by Bill Baird

20

Gold Exploration in Britain by Mike Gallagher and Don Cameron

23

Youngest Oil by Mike Cotterill

25

Invasion of the Biocrats by Mike Cotterill

26

Book Reviews:

Geology of Scotland - GY Craig  review by Mike Browne

32

A Directory of Mineral and Gemstone Locations in Scotland  review by Bill Baird 

34

Addition to The Proceedings of the Edinburgh Gological Society No 20 for 156th Session: List of Council for 1989-90 

36

The Proceedings of the Edinburgh Geological Society for the 157th Session 1990-91

38