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Details of sandstone east of Lyons, that is correlated with the upper sandstone of the Dakota group at Bellvue; showing a hard quartzose layer resting on carbonaceous shaly sandstone. Boulder County, Colorado. 1922.

Dates

Date Taken
1922

Summary

Details of sandstone east of Lyons, that is correlated with the upper sandstone of the Dakota group at Bellvue; showing a hard quartzose layer resting on carbonaceous shaly sandstone. The lower dark colored material is full of small fragments of charcoal and impressions of twigs and variety of plant debris. Boulder County, Colorado. 1922. Plate 31-B in U.S. Geological Survey. Professional paper 149. 1927. Plate 3-A in U.S. Geological Survey. Bulletin 751. 1925.

Contacts

Data Owner :
U.S. Geological Survey
Photographer :
Lee, Willis Thomas

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lwt01739.jpg thumbnail 16.57 MB

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Identifiers

Type Scheme Key
name photoLibrary lwt01739
number photoLibrary 21414
batch photoLibrary btch268
number_in_book photoLibrary 1739

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