The Berkshires are a highland geologic region located in the western parts of Massachusetts and Connecticut. The term "Berkshires" is normally used by locals in reference to the portion of the Vermont-based Green Mountains that extend south into western Massachusetts; the portion extending further south into northwestern Connecticut is locally referred to as either the Northwest Hills or Litchfield Hills.
The Taconic Mountains or Taconic Range are a physiographic section of the larger New England province and part of the Appalachian Mountains, running along the eastern border of New York State and adjacent New England from northwest Connecticut to western Massachusetts, north to central western Vermont. The range includes notable summits such as Mount Equinox and Mount Greylock, the highest point in Massachusetts. Currently local residents, consistent with the prominent 19th century geologist, T. Nelson Dale, consider the Mount Greylock Massif as a subsidiary of the main Taconic Range to the west.
The Acadian orogeny is a long-lasting mountain building event which began in the Middle Devonian, reaching a climax in the early Late Devonian. It was active for approximately 50 million years, beginning roughly around 375 million years ago, with deformational, plutonic, and metamorphic events extending into the Early Mississippian. The Acadian orogeny is the third of the four orogenies that created the Appalachian orogen and subsequent basin. The preceding orogenies consisted of the Potomac and Taconic orogeny, which followed a rift/drift stage in the Late Neoproterozoic. The Acadian orogeny involved the collision of a series of Avalonian continental fragments with the Laurasian continent. Geographically, the Acadian orogeny extended from the Canadian Maritime provinces migrating in a southwesterly direction toward Alabama. However, the Northern Appalachian region, from New England northeastward into Gaspé region of Canada, was the most greatly affected region by the collision.
The Taconic orogeny was a mountain building period that ended 440 million years ago and affected most of modern-day New England. A great mountain chain formed from eastern Canada down through what is now the Piedmont of the East coast of the United States. As the mountain chain eroded in the Silurian and Devonian periods, sediments from the mountain chain spread throughout the present-day Appalachians and midcontinental North America.
The Devonian Catskill Formation 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.
Taconic State Park is located in Columbia and Dutchess County, New York abutting Massachusetts and Connecticut within the Taconic Mountains. The state park is located off New York State Route 344 south of Interstate 90 and 110 miles (180 km) north of New York City. It features camping, hiking, bicycling, hunting, cross county skiing and other recreational opportunities.
The Ordovician Juniata Formation is a mapped bedrock unit in Pennsylvania and Maryland. It is a relative slope-former occurring between the two prominent ridge-forming sandstone units: the Tuscarora Formation and the Bald Eagle Formation in the Appalachian Mountains.
The South Taconic Trail is a 15.7 mi (25.3 km) hiking trail in the Taconic Mountains of southwest Massachusetts and adjacent New York. The trail extends from Shagroy Road in Millerton, New York, north along the ridgecrest of the southern Taconic Range and the border of New York and Massachusetts, and ends at the Catamount Ski Area on Massachusetts Route 23 700 feet (210 m) east of the New York border in Egremont, Massachusetts. The Appalachian Trail, which traverses an adjacent ridgeline in the same mountain range, parallels the South Taconic Trail 3 mi (4.8 km) to the east. The trails are connected to one another via shorter trails.
Berlin Mountain, 2,818 feet (859 m), is a prominent peak in the Taconic Mountains of western New England and is located adjacent to Massachusetts's border with New York State. It is the highest point in Rensselaer County, and the highest mountain in New York outside the Adirondacks and Catskills. The summit and west side of the mountain are located in New York; the east side lies within Williamstown, Massachusetts. The mountain is a bald, notable for its grassy summit and expansive views of the Hudson River Valley to the west. The 37-mile (60 km) Taconic Crest Trail traverses the mountain. Several other hiking trails approach the summit from the east. Much of the upper slopes and summit are within protected conservation land.
Misery Mountain, 2,671 feet (814 m), with at least ten well-defined summits, is a prominent 6 mi (9.7 km) long rideline in the Taconic Mountains of western Massachusetts and adjacent New York. The west side of the mountain is located in New York; the east side and high point lie within Massachusetts. The summit ridge is part meadow and part wooded with red spruce, balsam fir, and northern hardwood tree species. It is notable for its views of the Hudson River Valley to the west. The 35 mi (56 km) Taconic Crest Trail traverses the crest of the ridgeline, but does not cross the summit.
Mount Raimer, 2,572 feet (784 m), is a prominent peak in the Taconic Mountains of western Massachusetts and adjacent New York. The west side and summit are located in New York; the east slopes lie within Massachusetts. The summit ridge is part meadow and part wooded with red spruce, balsam fir, and northern hardwood tree species. It is notable for its views of the Hoosic River valley and Hudson River Valley. The 35 mi (56 km) Taconic Crest Trail traverses the mountain. Much of the upper slopes and summit are within protected conservation land. The mountain is the location of a defunct ski area.
Rounds Mountain, 2,257 feet (688 m), is a prominent peak in the Taconic Mountains of western Massachusetts and adjacent New York. The west side of the mountain and summit are located in New York; the east side is located within Massachusetts. The summit a bald; the slopes are wooded with northern hardwood tree species. It is notable for its views of the Hudson River Valley to the west and the Green River and Kinderhook Creek valleys of Hancock, Massachusetts to the east. The 35 mi (56 km) Taconic Crest Trail traverses the mountain. Much of the upper slopes and summit are within protected conservation land.
Brace Mountain is the peak of a ridge in the southern Taconic Mountains, near the tripoint of the U.S. states of New York, Connecticut and Massachusetts. Its 2,311-foot (704 m) main summit is located in New York; it is the highest point in that state's Dutchess County.
Alander Mountain, 2,239 feet (682 m), is a prominent peak of the south Taconic Mountains; it is located in southwest Massachusetts and adjacent New York. Part of the summit is grassy and open and part is covered with scrub oak and shrubs; the sides of the mountain are wooded with northern hardwood tree species. Views from the top include the southern Taconic Mountains, the Hudson River Valley including the Catskills. Several trails traverse Alander Mountain, most notably the 15.7 mi (25.3 km) South Taconic Trail, which passes just beneath the summit.
White Rock, 2,550 feet (780 m), is the high point on a 7 mi (11 km) ridgeline in the Taconic Mountains. The ridge is located in the tri-state corner of New York, Massachusetts, and Vermont in the towns of Petersburgh, Williamstown, and Pownal. The ridge has several distinct knobs; those with names are, from south to north: White Rocks, 2,365 feet (721 m); Smith Hill, 2,330 feet (710 m); White Rock, the high point 2,550 feet (780 m); and Bald Mountain 2,485 feet (757 m). The Snow Hole, located along the ridgeline between Bald Mountain and the White Rock, is a crevasse in which snow can be found well into the summer.
Holy Mount, 1,968 feet (600 m), is a prominent peak in the Taconic Mountains of western Massachusetts, formerly used as the location of religious ceremonies by a nearby Shaker community.
The Ebro is a river on the Iberian Peninsula. It is the second longest river in the Iberian peninsula after the Tagus and the second biggest by discharge volume and by drainage area after the Douro.
The Queenston Formation is a geological formation of Upper Ordovician age, which outcrops in Ontario, Canada and New York, United States. A typical outcrop of the formation is exposed at Bronte Creek just south of the Queen Elizabeth Way. The formation is a part of the Queenston Delta clastic wedge, formed as an erosional response to the Taconic Orogeny. Lithologically, the formation is dominated by red and grey shales with thin siltstone, limestone and sandstone interlayers. As materials, comprising the clastic wedge, become coarser in close proximity to the Taconic source rocks, siltstone and sandstone layers are predominant in New York.
The geology of New York is made up ancient Precambrian crystalline basement rock, forming the Adirondack Mountains and the bedrock of much of the state. These rocks experienced numerous deformations during mountain building events and much of the region was flooded by shallow seas depositing thick sequences of sedimentary rock during the Paleozoic. Fewer rocks have deposited since the Mesozoic as several kilometers of rock have eroded into the continental shelf and Atlantic coastal plain, although volcanic and sedimentary rocks in the Newark Basin are a prominent fossil-bearing feature near New York City from the Mesozoic rifting of the supercontinent Pangea.
