By: magic-gigapans
Image: Robin Rohrback, Mid-Atlantic Geo-Image Collection
License: Creative Commons Non Commercial ⧉

Uploaded: 13 May 2020
Last Updated: 28 May 2020

265 megapixels
18,060 x 14,656 pixels
60.2 in X 48.9 in at 300dpi

A phosphatic (up to 16 wt. %) columnar stromatolite from the ca. 740 Ma Salitre Formation of the Una Group in central Brazil. These stromatolites are similar to those found in post-glacial cap carbonate lithofacies. This sample was provided by Dr. Jay Kaufman of the University of Maryland.