Example image of eyePlorer eyePlorer map for 'Chalk': Calcite Limestone Mineral Sedimentary rock Coccolith Coccolithophore Chert Flint Calcium sulfate Talc Clay Cliff Erosion Downland Escarpment Hill Groundwater Marl Denehole England Chalk Group Cretaceous Europe Kent White cliffs of Dover Champagne (wine region) France Storage of wine Calcium carbonate Clay minerals Silt Diagenesis Carbonate rock Nodule (geology) Silicon dioxide Chalkboard Gypsum Sidewalk chalk Acid Agriculture PH Calcium oxide Tennis Titanium dioxide Gymnastics Magnesium carbonate Olympic weightlifting Rock climbing Tug of war Toothpaste