The Catskill Mountains, also known as the Catskills, are a physiographic province and subrange of the larger Appalachian Mountains, located in southeastern New York. As a cultural and geographic region, the Catskills are generally defined as those areas close to or within the borders of the Catskill Park, a 700,000-acre (2,800 km2) forest preserve protected from many forms of development under New York state law.
The Devonian Catskill Group or the Catskill Clastic wedge is a unit of mostly terrestrial sedimentary rock found in Pennsylvania and New York. Minor marine layers exist in this thick rock unit. It is equivalent to the Hampshire Formation of Maryland, West Virginia, and Virginia.
The Ashokan Reservoir is a reservoir in Ulster County, New York. It is at the eastern end of the Catskill Park, and is one of several in the region created to provide the City of New York with water. It is the city's deepest reservoir at 190 feet (58 m) near the dam at the former site of Bishop Falls.
Esopus Creek is a 65.4-mile-long (105.3 km) tributary of the Hudson River that drains the east-central Catskill Mountains in the U.S. state of New York. From its source at Winnisook Lake on the slopes of Slide Mountain, the Catskills' highest peak, it flows across Ulster County to the Hudson at Saugerties. Many tributaries extend its watershed into neighboring Greene County and a small portion of Delaware County. Midway along its length, it is impounded at Olive Bridge to create Ashokan Reservoir, the first of several built in the Catskills as part of New York City's water supply system. Its own flow is supplemented 13 miles (21 km) above the reservoir by the Shandaken Tunnel, which carries water from the city's Schoharie Reservoir into the creek.
The Catskill Aqueduct, part of the New York City water supply system, brings water from the Catskill Mountains to Yonkers where it connects to other parts of the system.
Balsam Cap is a mountain located in Ulster County, New York. The mountain is part of the Catskill Mountains. Balsam Cap is flanked to the north by Friday Mountain, and to the southwest by Rocky Mountain.
Friday Mountain is a mountain located in Ulster County, New York. The mountain is part of the Catskill Mountains. Friday Mountain is flanked to the north by Cornell Mountain, and to the south by Balsam Cap.
Wittenberg Mountain, locally "the Wittenberg," is a mountain located in Ulster County, New York. The mountain is part of the Burroughs Range of the Catskill Mountains. Wittenberg is flanked to the southwest by Cornell Mountain and to the northeast by Terrace Mountain.
Ashokan High Point is a 3,081 feet (939 m) summit in the Catskill Mountains of New York. High Point is the loftiest part of a massif that includes the adjacent Mombaccus Mountain, Little Rocky and South Mountain. The summit can be accessed via the Kanape Brook Trail, which ascends from Ulster County Road 42 to the saddle between High Point and Mombaccus. This trail, named for 19th-century farmer John Canape, was formerly a wagon track connected to the present-day Freeman Avery Road on the south side of the mountain, providing a route between Watson Hollow and Samsonville in the days of the Catskills tanneries. The Gazetteer and Business Directory of Ulster County, N. Y. For 1871-2 referred to the peak as "Shokan Point". It was also known as "Samson," after the Catskill tannery owner for whom Samsonville was named, and is so identified on a 1942 United States Coast and Geodetic Survey benchmark at the summit. Nowadays, Samson Mountain is the name given to a nearby peak above the upper reaches of Rondout Creek.
The Lucas Formation is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period.
The Sonyea Group is a geologic group in the northern part of the Appalachian Basin. It preserves fossils dating back to the Devonian period.
The Java Formation is a geologic formation in Kentucky, New York, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia. It preserves fossils dating back to the Devonian period. The formation comprises the Pipe Creek Shale, Wiscoy Sandstone Member in New York, and Hanover Shale Member except in Tennessee.
The Cattaraugus Formation is a geologic formation in New York. It preserves fossils dating back to the Devonian period.
The Oswayo Formation is a geologic formation in New York. It preserves fossils dating back to the Devonian period.
The Littleton Formation is a geologic formation in New Hampshire. It preserves fossils dating back to the Devonian period. The formation is exposed on several of New Hampshire's most prominent mountains, including Mount Washington and the northern Presidential Range, Mount Moosilauke, and Mount Monadnock.
The Battery Point Formation is a geologic formation in Quebec. It preserves fossils dating back to the early Emsian to early Eifelian the lower Devonian period.
The York River Formation is a geologic formation in Quebec. It preserves fossils dating back to the Devonian period.
The Alexo Formation a stratigraphic unit of Late Devonian age. It is present on the western edge of the Western Canada Sedimentary Basin in the central Rocky Mountains and foothills of Alberta. The formation consists primarily of dolomite. It is locally fossiliferous and includes remains of marine animals such as brachiopods and conodonts.
The Southesk Formation is a stratigraphic unit of Late Devonian age. It is present on the western edge of the Western Canada Sedimentary Basin in the Rocky Mountains and foothills of Alberta and southeastern British Columbia. It was named for the Southesk River in Jasper National Park by D.J. McLaren in 1955.
The Wood Bay Series is a geologic formation found on the island of Spitsbergen, Svalbard in Norway. It preserves fossils dating back to the Pragian–Emsian stages of the Devonian period.
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