Lebanon County is a county located in the U.S. state of Pennsylvania. As of the 2010 census, the population was 133,568. Its county seat is Lebanon. The county was formed from portions of Dauphin and Lancaster counties in 1813, with minor boundary revisions in 1814 and 1821. Lebanon County comprises the Lebanon, PA Metropolitan Statistical Area, which is also included in the Harrisburg-York-Lebanon, PA Combined Statistical Area.
sedimentary rocks change with heat and pressure and become metamorphic rock then rocks melt into magma.
Each kind of sedimentary rock turns into a different kind of metamorphic rock-limestone turns into travertine or marble, and shale turns into slate, and sandstone turns into quartzite.Even though slate is a metamorphic rock, it still looks a lot like a sedimentary rock-it is still in thin layers. A raw (uncut) diamond.hen sedimentary rocks like limestone or shale were under water, sometimes the weight of the water pressed them so hard that they actually changed the way their molecules locked together and became a different kind of rock. Metamorphosis means changes form, and that's why we call these metamorphic rocks.