Geology, Stratigraphic Devonian
Subject Source: Library of Congress Subject HeadingsScope Note: Created For = NAHSTE
Found in 4 Collections and/or Records:
Scope and Contents The Correspondence of Sir Archibald Geikie: American geologists sub-series consists of:
- 67 letters and postcards, alphabetically arranged (1878-1907).
Fleece shedding, staple length and fleece weight in experimental Wiltshire Horn - Scottish Blackface sheep crosses, 1959
Scope and Contents Notes for 4 lectures on the 'Volcanic History of Britain', given to the Royal Institution in 1886. Sir Archibald Geikie looked at the emergence of types of geological formations against a geological timeframe and how they have been affected by various processes, especially the action of volcanoes and materials produced by them, within the natural world. He used examples from numerous locations from different parts of the British Isles.
Scope and Contents Letter to Sir Archibald Geikie from Capt Clarence Edward Dutton discussing the fossiliferous Upper Cambrian metamorphosed sandstone shales found at Lake Superior and the Grand Canyon. At Lake Superior these beds overlie 1400 feet of unfossiliferous sandstone and shale, interspersed with layers of copper bearing metamorphosed volcanic ash. These are the same as the Huronian metamorphic beds at Lake Huron which are possibly of the Lower Cambrian age due to an unconformity (as identified by Alfred...
Dates: 05 May 1883