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Gigapans

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  1. Giant oolites from the Beck Spring Formation (ca. 723 Ma) very near Saratoga Springs in Death Valley, California. Data taken from this section and a discussion of the general Neoproterozoic geology of Death Valley can be found in a GSA Bulletin article by Corsetti and Kaufman (2003. To see these ooids uncut, clic...

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        $6.99 to $67.99
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        0.65 Gigapixels
        Added
        May 23, 2012
        Date Taken
        May 23, 2012
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  2. Archean conglomerate with detrital pyrite, indicative of a low-oxygen atmosphere. Sample is 16.5 cm across at its widest point, and was provided by Dr. Jay Kaufman of the University of Maryland.

  3. This sample was contributed by Dr. Jay Kaufman of Univeristy of Maryland. Writes Dr. Kaufman: "This slab, which is about 3.5" across, comes from the ca. 3.5 billion-year-old Barberton Mountainland greenstone belt. Lapilli form during volcanic eruptions into a wet atmosphere by accretion around a central nucleus of ...

  4. This sample was collected from the Ediacaran Period (ca. 550 Ma) Blueflower Formation in the Mackenzie Mountains of arctic Canada in 1994. The elephant skin is interpreted as the remains of a microbial mat on which, or beneath which, Ediacara organisms lived. This sample was contributed by Dr. Jay Kaufman of the Un...

  5. Ex-aragonite seafloor cements from the ca. 740 Ma upper Sete Lagoas Formation of the Bambui Group in south-central Brazil near Belo Horizonte. This sample was provided by Dr. Jay Kaufman of the University of Maryland.

  6. The sample is a tubestone stromatolite of the Neoproterozoic Noonday Formation, a post-glacial cap carbonate, from the Queen of Sheba mine in Death Valley. Notably, the inner tube, which appears here as the more resistant portion of the rock and likely rich in silica, co-exists with galena and other sulfide minerals, ...

  7. 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.

  8. Horizontal trace fossils from the terminal Ediacaran ca. 545 Ma upper Nama Group in southern Namibia. This sample was provided by Dr. Jay Kaufman of the University of Maryland.

  9. Roll up structures in a dolomitic microbialaminite from the ca. 740 Ma Rasthof Formation cap carbonate in the Otavi Group of northwestern Namibia. This thick cap carbonate lithofacies, which sits immediately atop the Chuos diamictite, starts with allodapic layers of transported carbonate (both limestone and dolomite) ...

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