PHOTOMICROGRAPH

Phanerozoic-Clast Breccia

Water Well Cuttings Sample

Round grains are Cretaceous siderite spherules. The light brown grain below is Mississippian pelletal limestone. The light grains are quartz sand. The speckled grains are siltstones and mudstones (mostly Cretaceous)

field 6.4 x 4.2 mm
cross-polarized light