The Rock Cycle
The cycle in which rock is changed by geological processes into different types of rock is called the rock cycle. Rocks may follow various pathways in the rock cycle. As one rock type changes to another, several different things including time, heat, pressure, weathering, and erosion may alter a rocks identity. (Holt and Science Technology, page 94)
The rock cycle is an ongoing process, beginning as rocks are pushed up by tectonic forces, and eroded by wind. The concept of the rock cycle is attributed to James Hutton, the 18th century founder of modern geology. (www.learner.org)
The rock cycle is a group of changes. Igneous rock can change into sedimentary rock or into metamorphic rock. Sedimentary rock can change into metamorphic rock or igneous rock. Metamorphic rock can change into igneous or sedimentary rock. (www.cotf.edu)
images: bottom-(www.cotf.edu) and top-(www.rocksandminerals4u.com)
The rock cycle is an ongoing process, beginning as rocks are pushed up by tectonic forces, and eroded by wind. The concept of the rock cycle is attributed to James Hutton, the 18th century founder of modern geology. (www.learner.org)
The rock cycle is a group of changes. Igneous rock can change into sedimentary rock or into metamorphic rock. Sedimentary rock can change into metamorphic rock or igneous rock. Metamorphic rock can change into igneous or sedimentary rock. (www.cotf.edu)
images: bottom-(www.cotf.edu) and top-(www.rocksandminerals4u.com)