This natural sandstone formation is made of tiny quartz crystals that cemented together grains of quartz sand. The concretion is on display at the National...
DescriptionSandstone concretion.jpg Sandstone Concretion sometimes takes a strange shape Date December 2008 Source Own work Author Brocken Inaglory...
Commons Attribution-Share Alike 2.0 Generic license. Attribution: Sandstone with Concretions by Anne Burgess You are free: to share – to copy, distribute and...
Commons Attribution-Share Alike 2.0 Generic license. Attribution: Concretions in sandstone by Jonathan Wilkins You are free: to share – to copy, distribute...
DescriptionGogotte sandstone concretion (5784278101).jpg This reminded us of the Michelin Man. Date Taken on 28 May 2011, 12:52 Source Gogotte sandstone concretion Author...
BY-SA 4.0 Creative Commons Attribution-Share Alike 4.0 truetrue English Vaqueros Formation sandstone with concretions heading: 346.6784973496197 degree...
DescriptionConcretion in the Dakota Sandstone (Lower Cretaceous) (Dinosaur Ridge, Colorado, USA).jpg English: Concretion in structurally tilted Dakota Sandstone...
jpg English: Concretion & quartz veins in sandstone in the Precambrian of North Carolina, USA. This is an outcrop of Thunderhead Sandstone in the Great...
Manskirsch architectural style: modern art made from material: concrete made from material: sandstone part of: art of sculpture depicts: ball creator: Johann...
refer to en.wikipedia. 2010-04-18 03:01 Jstuby 1500×1000 (461508 bytes) [[Concretion]]s of the [[Llewellyn Formation]] in the south wall of the Bear Valley...
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