Browse Items (2 total)

Hand Specimen This rock is made up of light grey sub-spherical ooids. Fine to medium sand grain size. A few lithic/biogenic fragments. Dark grey cement. Small hair-line white veins run through this rock. Thin-section Ooids made up of a greenish…

Hand Specimen Grey-buff colour rock made up of ooids, mainly medium grained and spherical. Some shell and lithic fragments. Well compacted and cemented by calcite, which fizzes with acid. Thin-section The ooids look brown. They are made up of…