A Geoscience Digital Image Library

TitleStromatolite Mound in the Galeros Formation, seen in Grand Canyon National Park, Coconino County, Arizona
DescriptionView of the Galeros Formation stromatolite mound in Grand Canyon National Park, Arizona. The Galeros Formation is made up of argillaceous shale with minor limestone, dolomite, siltstone, and sandstone. The presence of the stromatolites indicates a possible littoral or intertidal environment; some siltstones do contain ripple marks and mud cracks.
ChronostratigraphyMiddle to Late Proterozoic (Late Riphean)
LithostratigraphyGaleros Formation
Geologic provinceColorado Plateau
LocationUSA ▹ Arizona ▹ Coconino. Near Grand Canyon. Grand Canyon National Park.
PhotographerJoseph Hartman. 1986.
CollectionJoseph Hartman P06208.
Key wordsGrand Canyon National Park, Galeros, stromatolite
Tech details654 KB. Outcrop. Kodachrome, TIFF format.
GeoDIL number1407