Monument Rocks of the Smoky Chalk Member geology science earthscience Chalk Geology
Chalk Talks | Upland Limestone | National 5 The shallow tropical Cretaceous seas in which the Chalk formed was home to a rich sea-floor biota, including many siliceous Chalk is a soft, white, porous, sedimentary carbonate rock. It is a form of limestone composed of the mineral calcite and originally formed under the sea by Gypsum. Crumbly mineral in plaster, drywall, chalk & fertilizer. La Madera, NM Calcium carbonate is the main component of chalk. Under the microscope, it reveals complex crystal structures. These crystals ...