A mid-Cretaceous association of shell beds and organic-rich shale: bivalve exploitation of a nutrient-rich, anoxic sea-floor environment
- Henderson, Robert A.
DOIAbstract
The Toolebuc Formation (Late Albian) is a thin (<40m), very widely distributed unit marking the maximum deepening of the Cretaceous epicontinental sea recorded by the infill of the Great Artesian Basin, eastern Australia. It consists of organic-rich shale, with TOC ranging to 35%, and limestone as laminae and thin beds comprised of Inoceramus sutherlandi McCoy and, less commonly, Aucellina hughendenensis Etheridge. Finely interlayered organic-rich shale and coquina are typical of the formation, resulting in a distinctively black-and-white, thinly bedded to laminated rock. Inoceramus valves are commonly disturbed by breakage, reorientation, and imbrication, and, in many cases, have disintegrated into prism horizons. Sedimentary laminae show ...
Add to ORKG