Geology of Ireland Geology of Ireland The geology of Ireland consists of the study of the rock formations in Ireland. The island contains rocks from every age from Proterozoic to Holocene and a large variety of different rock types is represented. The basalt columns of the Giant's Causeway together with geologically significant sections of the adjacent coast have been declared a World Heritage Site. The geological detail follows the major events in Ireland's past based on the geological timescale. The oldest known Irish rock is about 1.7 billion years old and is found on Inishtrahull Island off the north coast of Ulster. Outcrops
Cave-In-Rock, Illinois Logan Belt Gang terrorized Hardin County in the 1870s and 1880s, until Belt was assassinated. In the middle of the 1800s, church services were being held in the cave. This earliest Christian congregation eventually formed the Big Creek Baptist Church. Founded in 1807, it was the first church organized in southeastern Illinois. Cave-In-Rock incorporated in 1839, in the same year that Hardin County was created from a section of Pope County. According to the Illinois Department of Natural Resources, "in 1929, the State of Illinois acquired for a park that since has increased to . The well-wooded, hills and the