Sunday, March 17, 2019

031719


Ooid grainstone, a high-energy tropical shallow-water sand in which interparticle pores have been entirely filled with cement. Jurassic Smackover Formation, subsurface of South Alabama, thin-section photomicrograph, stained with Alizarin Red S, which stains calcite pink, blue areas are open pores filled with blue epoxy in this thin section preparation.

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