Geology of Ohio terrestrial environment since the Permian. For instance, the main subdivisions of the Pennsylvanian: the Pottsville Group, Alleghany Group, Conemaugh Group and Monongahela Group, along with the Early Permian Dunkard Group, are each more terrestrial than the last. The region was situated inland, experiencing terrestrial erosion as the Proto-North American continent of Laurasia collided with Gondwana to form the supercontinent Pangaea. Rocks from the end of Paleozoic are best exposed in road cuts along I-77, between Canton and Marietta, I-77 from Cambridge to Bridgeport and cliffs on the Ohio River north of Marietta to East Liverpool. For 245 million years, spanning
PANGAEA (data library) Marine Environmental Sciences (MARUM), Bremen in Germany. The system is used by various international research projects from public funding as data repository and by the World Data Center for Marine Environmental Sciences (WDC-MARE) as long-term archive. The system was initially developed since 1987 and is operational on the Internet since 1995. The MediaWiki software is used to operate a wiki as PANGAEA manual and reference. PANGAEA is also listed in re3data.org. PANGAEA (data library) PANGAEA - Data Publisher for Earth & Environmental Science is a digital data library and a data publisher for earth system science. Data can be georeferenced