United States Geological Survey
Organization
Found in 2 Collections and/or Records:
Correspondence from Captain Clarence Edward Dutton, 05 March 1880 - 06 June 1891
Sub-Series
Identifier: Coll-74/11/5
Scope and Contents
The Correspondence from Captain Clarence Edward Dutton sub-series consists of:
- 18 letters to Sir Archibald Geikie from Captain Clarence Edward Dutton of the United States Geological Survey (USGS) concerning geological observations in the United States and the organisation of the USGS (1880-1891)
Dates:
05 March 1880 - 06 June 1891
Letter to Sir Archibald Geikie from Capt Clarence Edward Dutton, 05 May 1883
Item
Identifier: Coll-74/11/5/14
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...
Dates:
05 May 1883
Additional filters:
- Subject
- California (United States) 1
- Cascade Range (United States) 1
- Fossils 1
- Geology 1
- Geology, Research 1
- Geology, Stratigraphic Cambrian 1
- Geology, Stratigraphic Devonian 1
- Huron, Lake (Michigan, United States and Ontario, Canada) 1
- Lake Superior, Michigan, USA 1
- Montreal (Quebec, Canada) 1
- Oregon (United States) 1
- Rocks, Metamorphic 1
- Rocks, Sedimentary 1
- Rocky Mountains 1
- Unconformities (Geology) 1
- Utah (United States) 1
- Volcanism 1
- silurian 1 + ∧ less
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