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.
  Sedimentary rocks are formed by the lithification of the sediments  which accumulate from the erosion of â¦ preexisting rocks of all  types. They also included rocks form from animal and plant remains.   Metamorphic rocks are formed when sedimentary or igneous rocks are  heated and or squashed.1  How Limestone Changes to Marble Marble is a type of metamorphic rock highly prized by builders for its outward beauty. 2  Relatively rare, it forms from limestone, a common type of sedimentary rock. 3  How limestâ¦. Metamorphic rocks are formed when sedimentary or igneous rocks are  heated and or squashed. 1  How Limestone Changes to Marble Marble is a type of metamorphic rock highly prized by builders for its outward beauty.