Kansas Geological Survey, Open-file Report 2005-16, Figure 6
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Figure 6--Porous ooid grainstone (lithofacies 5), St. Louis Limestone, Wade Allen 36-1. A) Core photo of brownish ooid grainstone section, 5632-5637 ft core depth. B) Close up core photo of ooid grainstone, subtle cross stratification defined by thin interval composed of elongate skeletal particles with varying cementation, 5635.4 ft core depth. C and D) Thin section photomicrograph, radial concentric ooid grains with cemented by meniscus, rim calcite and usually unbroken, primary interpartical porosity preserved up to 20 percent, 5633.6 ft core depth. Polarized light with the 1st order red plate inserted. Little pressure solution observed.
Kansas Geological Survey, Energy Research
Updated Oct. 28, 2005
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