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Conway Granite
Conway granite is a typically pink (or Mesoperthite, mesoperthitic) biotite granite."Conway Granite." Mineral Resources On-Line Spatial Data. U.S. Geological Survey. U.S. Department of the Interior. No date. Accessed 2011-03-30. It is amphibole-free and of coarse Particle size (general), particle size (with portions of the rock fine-grained or porphyritic). Conway granite has a relatively high concentration of thorium, at about 56 (±6) ppm; this amount is not enough to make the granite dangerously radioactive, but it is sufficient to make the rock a low-grade (almost certainly not economic, at least in the early years) source of thorium for a thorium fuel cycle. Geologist Edward Hitchcock nam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mesoperthite
Perthite is used to describe an intergrowth of two feldspars: a host grain of potassium-rich alkali feldspar (near K-feldspar, KAlSi3O8, in composition) includes exsolved lamella (materials), lamellae or irregular intergrowths of sodic alkali feldspar (near albite, NaAlSi3O8, in composition). Typically, the host grain is orthoclase or microcline, and the lamellae are albite. If sodic feldspar is the dominant phase, the result is an antiperthite and where the feldspars are in roughly equal proportions the result is a mesoperthite. The intergrowth forms by exsolution due to cooling of a grain of alkali feldspar with a composition intermediate between K-feldspar and albite. There is complete solid solution between albite and K-feldspar at temperatures near 700 °C and pressures like those within the crust of the Earth, but a miscibility gap is present at lower temperatures. If an alkali feldspar grain with an intermediate composition cools slowly enough, K-rich and more Na-rich f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Hampshire
New Hampshire is a state in the New England region of the northeastern United States. It is bordered by Massachusetts to the south, Vermont to the west, Maine and the Gulf of Maine to the east, and the Canadian province of Quebec to the north. Of the 50 U.S. states, New Hampshire is the fifth smallest by area and the tenth least populous, with slightly more than 1.3 million residents. Concord is the state capital, while Manchester is the largest city. New Hampshire's motto, " Live Free or Die", reflects its role in the American Revolutionary War; its nickname, "The Granite State", refers to its extensive granite formations and quarries. It is well known nationwide for holding the first primary (after the Iowa caucus) in the U.S. presidential election cycle, and for its resulting influence on American electoral politics, leading the adage "As New Hampshire goes, so goes the nation". New Hampshire was inhabited for thousands of years by Algonquian-speaking peoples s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Winnipesaukee
Lake Winnipesaukee () is the largest lake in the U.S. state of New Hampshire, located in the Lakes Region at the foothills of the White Mountains. It is approximately long (northwest-southeast) and from wide (northeast-southwest), covering — when Paugus Bay is included—with a maximum depth of . The center area of the lake is called The Broads. The lake contains at least 264 islands, half of which are less than in size, and is indented by several peninsulas, yielding a total shoreline of approximately . The driving distance around the lake is . It is above sea level. Winnipesaukee is the third-largest lake in New England after Lake Champlain and Moosehead Lake. Outflow is regulated by the Lakeport Dam in Lakeport, New Hampshire, on the Winnipesaukee River. History The Abenaki name ''Winnipesaukee'' (often spelled Winnipiseogee in earlier centuries) means either "smile of the Great Spirit" or "beautiful water in a high place". At the outlet of the lake, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Belknap Mountains
The Belknap Mountains are a small mountain range in the Lakes Region of New Hampshire in the United States. The range lies in the towns of Gilford, Gilmanton, and Alton in Belknap County. The highest peak, Belknap Mountain, with an elevation of above sea level, is the highest point in Belknap County. Belknap Mountain State Forest covers the central part of the range, including the summit and slopes of Belknap Mountain. The range extends for approximately in an arc that begins at New Hampshire Route 11A in Gilford and runs south, then curves east through the northern end of Gilmanton, before ending in the town of Alton, where it overlooks Alton Bay of Lake Winnipesaukee. The named summits in the range, from northwest to southeast, are Mount Rowe (), Gunstock Mountain (), Belknap Mountain, Straightback Mountain (), and Mount Major (). A cluster of several unofficially named summits with elevations ranging from are on the main crest of the range between Belknap Mountain an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saco River
The Saco River (Abenaki: ''Sαkóhki'') is a river in northeastern New Hampshire and southwestern Maine in the United States. It drains a rural area of of forests and farmlands west and southwest of Portland, emptying into the Atlantic Ocean at Saco Bay, from its source.U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed June 30, 2011 It supplies drinking water to roughly 250,000 people in thirty-five towns; and historically provided transportation and water power encouraging development of the cities of Biddeford and Saco and the towns of Fryeburg and Hiram. The name "Saco" comes from the Eastern Abenaki word '' ɑkohki', meaning "land where the river comes out". ''The Jesuit Relations'', ethnographic documents from the 17th century, refer to the river as ''Chouacoet''. Course The river rises at Saco Lake in Crawford Notch in the White Mountains and flows generally south-southeast through Bartlett and Conway in C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pemigewasset Wilderness
The Pemigewasset Wilderness is a federally designated Wilderness Area in the heart of New Hampshire's White Mountains. It is a part of the White Mountain National Forest. It is New Hampshire's largest wilderness area. The Wilderness Area consists of the upper watershed of the East Branch of the Pemigewasset River, and includes the Franconia, Twin, Zealand, and Hancock mountain ranges, but excludes the summits of the ranges and the trail along them. As a result of the region's rugged character, the Pemigewasset Wilderness is a popular recreation area; its large trail network receives heavy use, in the form of hiking, cross-country skiing, and others, throughout the year. The area is also noted for its ecological recovery from the logging era of the late nineteenth and early twentieth centuries. After years of unchecked clear-cutting, during which the zone had the largest logging railroad system in the White Mountains, the area's inclusion in the White Mountain Nationa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crawford Notch
Crawford Notch is a major pass through the White Mountains of New Hampshire, located in Hart's Location. Roughly half of that town is contained in Crawford Notch State Park. The high point of the notch, at approximately above sea level, is at the southern end of the town of Carroll, near the Crawford Depot train station and Saco Lake, the source of the Saco River, which flows southward through the steep-sided notch. North of the high point of the notch, Crawford Brook flows more gently northwest to the Ammonoosuc River, a tributary of the Connecticut River. The notch is traversed by U.S. Route 302, which closely follows the Saco River southeast to North Conway and less closely follows the Ammonoosuc River northwest to Littleton. History Originally called White Mountain Notch, it became known to European settlers when found by Timothy Nash in 1771. The 1772 boundaries of Hart's Grant reflected its shape. It was named for the Crawford family, who were trail-builders and h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Franconia Notch
Franconia Notch (elev. ) is a major mountain pass through the White Mountains of New Hampshire. Dominated by Cannon Mountain to the west and Mount Lafayette to the east, it lies principally within Franconia Notch State Park and is traversed by the Franconia Notch Parkway (Interstate 93 and U.S. Route 3). The parkway required a special act of Congress to sidestep design standards for the Interstate highway system because it is only one lane in each direction. Kimberly A. Jarvis, ''From the Mountains to the Sea: Protecting Nature in Postwar New Hampshire'' (University of Massachusetts Press, 2020online review/ref> The notch was home to the Old Man of the Mountain, a rock formation which collapsed in 2003 but whose profile remains a symbol of the state of New Hampshire. The notch is located primarily in the town of Franconia but extends south into Lincoln. It is bordered to the east by Franconia Ridge, comprising Mount Lafayette (), Mount Lincoln (), and Little Haystack M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Mountains (New Hampshire)
The White Mountains are a mountain range covering about a quarter of the state of New Hampshire and a small portion of western Maine in the United States. They are part of the northern Appalachian Mountains and the most rugged mountains in New England. The range is heavily visited due to its proximity to Boston, New York City, and Montreal. Most of the area is public land, including the White Mountain National Forest and a number of state parks. Its most famous mountain is Mount Washington, which is the highest peak in the Northeastern U.S. and for 76 years held the record for fastest surface wind gust in the world ( in 1934). Mount Washington is part of a line of summits, the Presidential Range, that are named after U.S. presidents and other prominent Americans. The White Mountains also include the Franconia Range, Sandwich Range, Carter-Moriah Range and Kinsman Range in New Hampshire, and the Mahoosuc Range straddling the border between it and Maine. In all, there are 48 peaks ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Old Man Of The Mountain
The Old Man of the Mountain, also called the Great Stone Face and the Profile, was a series of five granite cliff ledges on Cannon Mountain in Franconia, New Hampshire, United States, that appeared to be the jagged profile of a human face when viewed from the north. The rock formation, above Profile Lake, was tall and wide. The Old Man of the Mountain is called "Stone Face" by the Abenaki and is a symbol within their culture. It is also a symbol to the Mohawk people. The first written mention of the Old Man was in 1805. It became a landmark and a cultural icon for the state of New Hampshire. It collapsed on May 3, 2003.New Hampshire Division of Parks and Recreation: Old Man of the Mountain Historic Site Accessed: 14 August 2012. After ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biotite
Biotite is a common group of phyllosilicate minerals within the mica group, with the approximate chemical formula . It is primarily a solid-solution series between the iron- endmember annite, and the magnesium-endmember phlogopite; more aluminous end-members include siderophyllite and eastonite. Biotite was regarded as a mineral ''species'' by the International Mineralogical Association until 1998, when its status was changed to a mineral ''group''. The term ''biotite'' is still used to describe unanalysed dark micas in the field. Biotite was named by J.F.L. Hausmann in 1847 in honor of the French physicist Jean-Baptiste Biot, who performed early research into the many optical properties of mica. Members of the biotite group are sheet silicates. Iron, magnesium, aluminium, silicon, oxygen, and hydrogen form sheets that are weakly bound together by potassium ions. The term "iron mica" is sometimes used for iron-rich biotite, but the term also refers to a flaky micaceou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conway, New Hampshire
Conway is a town in Carroll County, New Hampshire, United States. It is the most populous community in the county, with a population of 9,822 at the 2020 census, down from 10,115 at the 2010 census. The town is on the southeastern edge of the White Mountain National Forest. There are five villages in the town: Conway, North Conway, Center Conway, Redstone and Kearsarge. Additionally, it shares a portion of the village of Intervale with the neighboring town of Bartlett. Conway serves as the main economic and commercial hub for Carroll County. Tourism remains Conway's biggest economic engine, with numerous lodging and rental properties serving visitors to the eastern White Mountains and the Mount Washington Valley, while the technology sector makes up the second largest source of employment. Sites of interest in the town include natural sites such as Cathedral Ledge (popular with climbers), Echo Lake and Conway Lake, as well as several nearby ski resorts. The Conway Sceni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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