Rocks are naturally formed, consolidated material composed of grains of one or more minerals. Geologists group rocks into three categories depending on their origin: igneous, sedimentary and metamorphic.A mineral is defined as a naturally occurring, crystalline solid of definite chemical composition and a characteristic crystal structure. Igneous rocks are formed from solidification of molten material.eologists group rocks into three categories depending on their origin: igneous, sedimentary and metamorphic. A mineral is defined as a naturally occurring, crystalline solid of definite chemical composition and a characteristic crystal structure.
The rest of the first season and all of the second season were filmed in Wilmington, North Carolina. In January 2015, it was announced that the show will be moving production to Atlanta, Georgia for its third season.
For Back to the Future Part III, Hill Valley 1885 was filmed in Sonora, California. The producers were able to use the land rent-free as long as they left the buildings there. They agreed to leave everything except the Clock Tower.y 1955, as seen in the first two Back to the Future films, the area around the courthouse has developed into the downtown of Hill Valley. In front of the courthouse is a grass-covered town square, with stores, two movie theaters (Essex and Town), and cafes cafÃ©s on the surrounding. streets