There are six commonwealth-owned parks in Bucks County: 1  Five are owned and operated by the Pennsylvania Bureau of State Parks, part of the Pennsylvania Department of Conservation and Natural Resources (DCNR). 2  Bucks County Parks and Recreation operates an 18-bed youth hostel in the Nockamixon State Park Weisel estate.
lithosphere definition: Lithosphere is defined as the rock and crust surface that covers the Earth. (noun) An example of lithosphere is the Rocky Mountain range in western North America....
geosphere, lithosphere-the solid part of the earth consisting of the crust and outer mantle. crustal plate, plate-a rigid layer of the Earth's crust that is believed to drift slowly. sial-the granitelike rocks that form the outermost layer of the earth's crust; rich in silicon and aluminum.