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What is the rock cycle? There are three types of rocks — igneous, sedimentary, and metamorphic — that have formed over time in the Earth's different layers. A rock can begin as one type and can change ...

Dredged rock material in the Collection dates from the early part of the 1900s. The Collection has slowly evolved from individual bags of rock to thousands of wooden storage boxes full of rock, housed ...

One way to understand the Earth’s crust is to begin long ago and far away: surveying eons of geological time, attending to ancient eruptions, and describing igneous, sedimentary and metamorphic rock.

Menu Local Geology History, Resources, and Facilities Geologic History of Southwestern Ohio At the Limper Geology Museum, you will be able to explore a large collection of local rock, mineral, and ...