An Education was created by singer Lynn Barber.
The Brightseat Formation is an exposure of marine sedimentary rock beds of Upper Cretaceous / Lower Paleocene age -LRB- 65 MY to 55.5 MY -RRB- , in Landover , Maryland .. Cretaceous. Cretaceous. Paleocene. Paleocene. The exposure is located at Brightseat Road between Sheriff and Landover Roads .. The site is currently owned by the Maryland-National Capital Park and Planning Commission .. Maryland-National Capital Park and Planning Commission. Maryland-National Capital Park and Planning Commission. It was given its name by R.R. Bennett and G.G. Collins in 1952 .. According to the Maryland Geologic Survey , the exposure consists of `` Gray to greenish-gray , micaceous , argillaceous , sparsely glauconitic , fine - to coarse-grained sand , locally indurated calcareous beds ; phosphatic pebbles ; thickness 0 to 20 feet . ''. Maryland Geologic Survey. Maryland Geologic Survey. micaceous. micaceous. argillaceous. argillaceous. glauconitic. glauconitic. calcareous. calcareous. phosphatic. phosphatic