File:Chlorellopsis colonata reef img 00227.jpg

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Description
English: W.H. Bradley 1929; plate 45-A; Polished transverse section of reef shown in Bradley photo 209; showing alternate algal and inorganic layers, the irregular light colored layers consists of the molds of Chlorellopsis coloniata and typical spongy algal deposit. The black and gray finely banded layers are of inorganic origin and owe their dark color to disseminated pyrite. Enlarged 3 diameters. Compare with the photomicrograph of thin section of part of the same reef shown in Bradley photo 242.

Wasatchian, Early Eocene; Tipton Member, Lake Gosiute, Green River Formation; NW 1/4 16, T.24 N., R. 101 W. Sweetwater County, Wyoming, USA

Department of Paleobotany, National Museum of Natural History, Smithsonian Institution, Washington, District of Columbia; collected 1923.
Date
Source USGS Denver Library Photographic Collection
Author Wilmot Hyde Bradley, 1925

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Public domain
This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.

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current20:15, 1 November 2024Thumbnail for version as of 20:15, 1 November 20247,207 × 4,555 (15.83 MB)Kevmin (talk | contribs)Uploaded a work by Wilmot Hyde Bradley, 1925 from [https://www.sciencebase.gov/catalog/items?q=Chlorellopsis&= USGS Denver Library Photographic Collection] with UploadWizard

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