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Massive Rawnsley Quartzite outlines the strucutre of this geological feature. Its basin shape is the remnant of a downfold (syncline) preserved by the resistant quartzite which forms jagged peaks along its edge.
Taken between 6:30 - 7:45 am at Falls Park in Sioux Falls, SD.
I wasn't planning to do a shoot while visiting, so didn't have anything but my phone. It was such a beautiful morning, I couldn't resist.
Usurped by Ay and Horemheb
Large traces of paint that remain on the statue hint at its original vivid colours
Quartzite
This dramatic statue is one of a pair that probably stood at Tutankhamun's mortuary temple. Originally Tutankhamun's name was carved on the belt but his successor, Ay, inscribed his name over Tutankhamun's. Soon after, Ay's name was replaced by that of his successor Horemheb.
Having done a Geology A-level I really should be able to identify this, but alas I am not too sure what it is.
God it was thirsty work walking along here with the sun pounding mercilessly down and the rock seeming to suck all the moisture out of the air. Hard work, but with views like this it would be churlish to complain
Crustose lichens on Baraboo Quartzite, photographed at Devil's Lake State Park in Wisconsin in late May, 2015.
Many of the rocks along both sides of the point are veined with quartzite. Photographed at Katherine Cove, Lake Superior Provincial Park, Ontario.
Many of the rocks along both sides of the point are veined with quartzite. Photographed at Katherine Cove, Lake Superior Provincial Park, Ontario.
$560 per ton - covers 80-120 SF per ton -
Quartzite is the most unique flagstone because of the metalic finish it has. It is mostly silver with some gold tones and is smooth. Very durable.
Colossal Quartzite Statue of Tutankhamun, Usurped by Ay and Horemheb
Taken at Tutankhamun: Treasures of the Golden Pharaoh
(November 2019 to May 2020)
At the Saatchi Gallery
d13164a. Completely rewelded quartizitic sandstone - no granular texture but still showing original bedding traces.
Quartzite from the Precambrian of South Dakota, USA.
The bedrock in southeastern South Dakota includes outcrops of pinkish, Paleoproterozoic-aged quartzites. A famous locality is Falls Park along the Big Sioux River in the city of Sioux Falls, South Dakota. These rocks are part of the Sioux Quartzite, a 1.65 to 1.70 billion year old succession of metamorphosed sandstones. Despite the metamorphism, original sedimentary features such as horizontal stratification, cross-bedding, and ripple marks are still preserved.
The Sioux Quartzite is an erosion-resistant unit in America’s midcontinent. It has formed a long-lived paleotopographic high since Precambrian times - the Sioux tectonic core. This high is part of a northeast-to-southwest trending series of paleotopographic highs & depressions known as the Transcontinental Arch, which extends from Arizona to Minnesota (see Carlson, 1999).
Quarries of Sioux Quartzite occur in southeastern South Dakota and southwestern Minnesota. The rocks have been used as building stone, road gravel, sidewalk and paving gravel, and erosion control material.
Stratigraphy: Sioux Quartzite, upper Paleoproterozoic, 1.65-1.70 Ga
Locality: unrecorded / undisclosed site at or near the town of Dell Rapids (possibly from a quarry), southeastern South Dakota, USA
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Reference cited:
Carlson (1999) - Transcontinental Arch - a pattern formed by rejuvenation of local features across central North America. Tectonophysics 305: 225-233.