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Ebenezer Emmons
Ebenezer Emmons (May 16, 1799October 1, 1863), was a pioneering American geologist whose work includes the naming of the Adirondack Mountains in New York as well as a first ascent of Mount Marcy. Early life Emmons was born at Middlefield, Massachusetts, on May 16, 1799, son of Ebenezer and Mary (Mack) Emmons. Emmons entered Williams College at age 16 and graduated with a degree in medicine in 1818. He went on to study medicine at Albany, New York. After graduating, he practiced as a doctor in Berkshire County, Massachusetts. In 1824, he assisted Chester Dewey in preparing a geological map of Berkshire County, in which the first attempt was made to classify the rocks of the Taconic area. He eventually attended the Rensselaer School (now Rensselaer Polytechnic Institute) for geology. There, he was inspired by professor Amos Eaton, and graduated in the first class in 1826. While giving much of his time to natural science at Williams College, he also became a professor in chemistry a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PSM V48 D320 Ebenezer Emmons
PSM, an acronym, may refer to: Organizations * Sepaktakraw Association of Malaysia ( ms, Persatuan Sepaktakraw Malaysia; PSM), a national governing body in Malaysia. * Pakistan School Muscat, a Pakistani co-educational institute in Oman * Palestine Solidarity Movement, a student organization in the United States * Panhellenic Socialist Movement, a centre-left party in Greece * Parti Sosialis Malaysia, a socialist political party in Malaysia * PlayStation: The Official Magazine, a magazine originally known as PlayStation Magazine or PSM * Ponce School of Medicine, a post-graduate medical school located in Ponce, Puerto Rico * Power Systems Mfg, a subsidiary of Alstom, specializing in aftermarket gas turbine servicing for power generating industry. * ''Poznańska Spółdzielnia Mieszkaniowa'', a housing cooperative administering most of the Piątkowo, Poznań, Piątkowo district of Poznań, Poland * PSM3, a UK video game magazine specializing in Sony consoles * PSM Makassar, a footb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stratigraphy
Stratigraphy is a branch of geology concerned with the study of rock (geology), rock layers (Stratum, strata) and layering (stratification). It is primarily used in the study of sedimentary rock, sedimentary and layered volcanic rocks. Stratigraphy has three related subfields: lithostratigraphy (lithologic stratigraphy), biostratigraphy (biologic stratigraphy), and chronostratigraphy (stratigraphy by age). Historical development Catholic priest Nicholas Steno established the theoretical basis for stratigraphy when he introduced the law of superposition, the principle of original horizontality and the principle of lateral continuity in a 1669 work on the fossilization of organic remains in layers of sediment. The first practical large-scale application of stratigraphy was by William Smith (geologist), William Smith in the 1790s and early 19th century. Known as the "Father of English geology", Smith recognized the significance of Stratum, strata or rock layering and the importance ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Hall (paleontologist)
James Hall Jr. (September 12, 1811 – August 7, 1898) was an American geologist and paleontologist. He was a noted authority on stratigraphy and had an influential role in the development of paleontology in the United States. Early life James Hall was born in Hingham, Massachusetts, the oldest of four children. His parents, James Hall Sr. and Sousanna Dourdain Hall, had emigrated from England two years earlier. Hall developed an early interest in science and enrolled in Rensselaer Polytechnic Institute, a recently established college that emphasized student participation and focused on science. He was a student of Amos Eaton and Ebenezer Emmons, both notable geologists. Hall graduated with honors in 1832, received his master's degree in 1833, and remained at Rensselaer to teach chemistry and later geology. In 1836 a multi-year survey was established to collect information on the geology and natural history of New York. For purposes of the survey, the state was divided into f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taconic Mountains
The Taconic Mountains or Taconic Range () are a range 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. A physiographic region of the larger New England province, the range includes notable summits, including its high point, Mount Equinox in Vermont, and Mount Greylock, the highest point in Massachusetts.''Day Hiker's Guide to Vermont'' 5th ed. (2006). Green Mountain Club: Waterbury Center, VermontRaymo, Chet and Raymo, Maureen E. (1989). ''Written in Stone: A Geologic History of the Northeastern United States.'' Chester, Connecticut: Globe Pequot.Doll, Charles G. Centennial Geologic Map of Vermont' (1961). United States Geological Survey: Washington The Taconics contain several hundred miles of trails, including sections of the Appalachian Trail, and over sixty designated areas of land protected by federal, state, county, and municipal, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poesten Kill
The Poesten Kill is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed October 3, 2011 creek in upstate New York located entirely in Rensselaer County, which flows westerly from its source at Dyken Pond in the town of Berlin to its mouth at the Hudson River in the city of Troy. It has been used historically as a source of water for local inhabitants and farmers and became even more important as a source of water power during the Industrial Revolution, during which many mills and factories sprung up along its banks. Its name is derived from a local farmer and miller, Jan Barensten Wemple also known by the nickname "Wemp" or "Poest", that lived near the creek in the 1660s, and the Dutch word ''kill'', meaning creek at. Geography The Poesten Kill begins at Dyken Pond, a man-made body of water located in the Petersburg Mountains, about east of the Hudson River, which was created by the Manning Paper Company in 1902 in an eff ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Troy, New York
Troy is a city in the U.S. state of New York and the county seat of Rensselaer County. The city is located on the western edge of Rensselaer County and on the eastern bank of the Hudson River. Troy has close ties to the nearby cities of Albany and Schenectady, forming a region popularly called the Capital District. The city is one of the three major centers for the Albany metropolitan statistical area, which has a population of 1,170,483. At the 2020 census, the population of Troy was 51,401. Troy's motto is ''Ilium fuit, Troja est'', which means "Ilium was, Troy is". Today, Troy is home to Rensselaer Polytechnic Institute, the oldest private engineering and technical university in the US, founded in 1824. It is also home to Emma Willard School, an all-girls high school started by Emma Willard, a women's education activist, who sought to create a school for girls equal to their male counterparts. Due to the confluence of major waterways and a geography that supported water power ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vermont
Vermont () is a state in the northeast New England region of the United States. Vermont is bordered by the states of Massachusetts to the south, New Hampshire to the east, and New York to the west, and the Canadian province of Quebec to the north. Admitted to the union in 1791 as the 14th state, it is the only state in New England not bordered by the Atlantic Ocean. According to the 2020 U.S. census, the state has a population of 643,503, ranking it the second least-populated in the U.S. after Wyoming. It is also the nation's sixth-smallest state in area. The state's capital Montpelier is the least-populous state capital in the U.S., while its most-populous city, Burlington, is the least-populous to be a state's largest. For some 12,000 years, indigenous peoples have inhabited this area. The competitive tribes of the Algonquian-speaking Abenaki and Iroquoian-speaking Mohawk were active in the area at the time of European encounter. During the 17th century, Fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Edmond Logan
Sir William Edmond Logan, FRSE FRS FGS (20 April 1798 – 22 June 1875), was a Canadian-born geologist and the founder and first director of the Geological Survey of Canada. Life William Edmond Logan was born into a well-to-do Montreal family in 1798, the third son of William Logan, a baker and owner of real estate, and Janet Edmond, both originally from Scotland. Logan was sent to Edinburgh to receive an education. As was common at the time for young men of means, he learned languages (French, Spanish, some Gaelic and German), music (flute), and became an accomplished artist. In the 1830s, Logan became fascinated with geology while managing a copper-smelting works near Swansea, Wales, on behalf of his uncle, Hart Logan. His self-taught talent for the subject soon brought his geological maps and interpretations to the attention of the most eminent geologists of Great Britain, and it was their later recommendations that clinched Logan's appointment as the founding director of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ordovician
The Ordovician ( ) is a geologic period and System (geology), system, the second of six periods of the Paleozoic Era (geology), Era. The Ordovician spans 41.6 million years from the end of the Cambrian Period million years ago (Mya) to the start of the Silurian Period Mya. The Ordovician, named after the Celtic Britons, Welsh tribe of the Ordovices, was defined by Charles Lapworth in 1879 to resolve a dispute between followers of Adam Sedgwick and Roderick Murchison, who were placing the same Rock (geology), rock beds in North Wales in the Cambrian and Silurian systems, respectively. Lapworth recognized that the fossil fauna in the disputed Stratum, strata were different from those of either the Cambrian or the Silurian systems, and placed them in a system of their own. The Ordovician received international approval in 1960 (forty years after Lapworth's death), when it was adopted as an official period of the Paleozoic Era by the International Union of Geological Sciences, Intern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adam Sedgwick
Adam Sedgwick (; 22 March 1785 – 27 January 1873) was a British geologist and Anglican priest, one of the founders of modern geology. He proposed the Cambrian and Devonian period of the geological timescale. Based on work which he did on Welsh rock strata, he proposed the Cambrian period in 1835, in a joint publication in which Roderick Murchison also proposed the Silurian period. Later in 1840, to resolve what later became known as the Great Devonian Controversy about rocks near the boundary between the Silurian and Carboniferous periods, he and Murchison proposed the Devonian period. Though he had guided the young Charles Darwin in his early study of geology and continued to be on friendly terms, Sedgwick was an opponent of Darwin's theory of evolution by means of natural selection. He strongly opposed the admission of women to the University of Cambridge, in one conversation describing aspiring female students as "nasty forward minxes." Life and career Sedgwick was b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambrian
The Cambrian Period ( ; sometimes symbolized C with bar, Ꞓ) was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran Period 538.8 million years ago (mya) to the beginning of the Ordovician Period mya. Its subdivisions, and its base, are somewhat in flux. The period was established as "Cambrian series" by Adam Sedgwick, who named it after Cambria, the Latin name for 'Cymru' (Wales), where Britain's Cambrian rocks are best exposed. Sedgwick identified the layer as part of his task, along with Roderick Murchison, to subdivide the large "Transition Series", although the two geologists disagreed for a while on the appropriate categorization. The Cambrian is unique in its unusually high proportion of sedimentary deposits, sites of exceptional preservation where "soft" parts of organisms are preserved as well as their more resistant shells. As a result, our understanding of the Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potsdam Sandstone
The Potsdam Sandstone, more formally known as the Potsdam Group, is a geologic unit of mid-to-late Cambrian age found in Northern New York and northern Vermont and Quebec and Ontario. A well-cemented sandstone of nearly pure quartz, in the 19th century it was widely used in construction and in refractory linings for iron furnaces.James CarlPotsdam Sandstone: Composition and Qualities Potsdam Public Museum website, accessed July 29, 2011 Name and type locality The Potsdam Sandstone is named for its type locality in Potsdam, New York, where in 1838 Ebenezer Emmons described it in outcrops along the Raquette River.Geologic Unit: Potsdam Geolex Database, accessed Augu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
