The Grand Canyon is a steep-sided canyon carved by the Colorado River in Arizona, United States. The Grand Canyon is 277 miles (446 km) long, up to 18 miles (29 km) wide and attains a depth of over a mile.
A petroglyph is an image created by removing part of a rock surface by incising, picking, carving, or abrading, as a form of rock art. Outside North America, scholars often use terms such as "carving", "engraving", or other descriptions of the technique to refer to such images. Petroglyphs, estimated to be 20,000 years old are classified as protected monuments and have been added to the tentative list of UNESCO's World Heritage Sites. Petroglyphs are found worldwide, and are often associated with prehistoric peoples. The word comes from the Greek prefix petro-, from πέτρα petra meaning "stone", and γλύφω glýphō meaning "carve", and was originally coined in French as pétroglyphe.
The New River is a river which flows through the U.S. states of North Carolina, Virginia, and West Virginia before joining with the Gauley River to form the Kanawha River at the town of Gauley Bridge, West Virginia. Part of the Ohio River watershed, it is about 360 miles (580 km) long.
Cuyahoga Valley National Park is an American national park that preserves and reclaims the rural landscape along the Cuyahoga River between Akron and Cleveland in Northeast Ohio.
A fossil track or ichnite is a fossilized footprint. This is a type of trace fossil. A fossil trackway is a sequence of fossil tracks left by a single organism. Over the years, many ichnites have been found, around the world, giving important clues about the behaviour of the animals that made them. For instance, multiple ichnites of a single species, close together, suggest 'herd' or 'pack' behaviour of that species.
The Silurian Tuscarora Formation — also known as Tuscarora Sandstone or Tuscarora Quartzite — is a mapped bedrock unit in Pennsylvania, Maryland, West Virginia, and Virginia, US.
The Dakota is a sedimentary geologic unit name of formation and group rank in Midwestern North America. The Dakota units are generally composed of sandstones, mudstones, clays, and shales deposited in the Mid-Cretaceous opening of the Western Interior Seaway. The usage of the name Dakota for this particular Albian-Cenomanian strata is exceptionally widespread; from British Columbia and Alberta to Montana and Wisconsin to Colorado and Kansas to Utah and Arizona. It is famous for producing massive colorful rock formations in the Rocky Mountains and the Great Plains of the United States, and for preserving both dinosaur footprints and early deciduous tree leaves.
The Hamilton Group is a Devonian-age geological group which is located in the Appalachian region of the United States. It is present in New York, Pennsylvania, Maryland, Ohio, West Virginia, northwestern Virginia and Ontario, Canada, and is mainly composed of marine shale with some sandstone.
The Marcellus Formation or the Marcellus Shale is a Middle Devonian age unit of sedimentary rock found in eastern North America. Named for a distinctive outcrop near the village of Marcellus, New York, in the United States, it extends throughout much of the Appalachian Basin.
The Prehistory of West Virginia spans ancient times until the arrival of Europeans in the early 17th century. Hunters ventured into West Virginia's mountain valleys and made temporary camp villages since the Archaic period in the Americas. Many ancient human-made earthen mounds from various mound builder cultures survive, especially in the areas of Moundsville, South Charleston, and Romney. The artifacts uncovered in these areas give evidence of a village society with a tribal trade system culture that included limited cold worked copper. As of 2009, over 12,500 archaeological sites have been documented in West Virginia.
Elbe Sandstone describes sandstones that naturally occur in North Bohemia and those parts of Saxony within the area around Dresden. It is named after the River Elbe, which cuts through the sandstone region in a transverse valley, the Elbe Valley Zone. It reaches the surface most strikingly in the Elbe Sandstone Mountains, which are divided into the regions of Saxon Switzerland on German soil and Bohemian Switzerland on Czech territory. The term Elbe Sandstone is used in both geological and economic contexts.
The 20th century in ichnology refers to advances made between the years 1900 and 1999 in the scientific study of trace fossils, the preserved record of the behavior and physiological processes of ancient life forms, especially fossil footprints. Significant fossil trackway discoveries began almost immediately after the start of the 20th century with the 1900 discovery at Ipolytarnoc, Hungary of a wide variety of bird and mammal footprints left behind during the early Miocene. Not long after, fossil Iguanodon footprints were discovered in Sussex, England, a discovery that probably served as the inspiration for Sir Arthur Conan Doyle's The Lost World.
St. Clara Female Academy was a 19th-century American parochial school, a Roman Catholic institution, in Wisconsin. After a series of changes, it is now known as Dominican University.
Euclid Creek is a 43-mile (69 km) long stream located in Cuyahoga and Lake counties in the state of Ohio in the United States. The 11.5-mile (18.5 km) long main branch runs from the Euclid Creek Reservation of the Cleveland Metroparks to Lake Erie. The west branch is usually considered part of the main branch, and extends another 16 miles (26 km) to the creek's headwaters in Beachwood, Ohio. The east branch runs for 19 miles (31 km) and has headwaters in Willoughby Hills, Ohio.
The Stadium Square Historic District is a historic district located in Cleveland Heights, Ohio, in the United States. The district contains properties along the north and south sides of Superior Park Drive between S. Taylor and S. Compton Roads, as well as Taylor Tudor properties on S. Taylor Road at Superior Park Drive. The 6.92-acre (0.0280 km2) site contains residential homes and mixed-use structures, all built beginning in 1926. Cleveland Heights proposed constructing a football stadium on the site in 1927. The stadium was never built, and the historic district takes its name from the original name given the commercial complex. The Stadium Square Historic District is a largely undisturbed example of early 20th century Tudor Revival architecture.
