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.
Anything can happen in the Rock Cycle. 1  Igneous rocks can be subjected to heat, pressure, and the action of fluids to form metamorphic rocks. 2  Igneous rocks can be re-melted, forming a new generation of igneous rocks. 3  Sedimentary rocks can be weathered and eroded to form a new generation of sedimentary rocks. Sedimentary rocks may eventually be heated enough to melt, forming a new generation of igneous rocks (although technically they'd be metamorphic by the time they melted). Metamorphic rocks can be weathered and eroded to form sedimentary rocks.