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John W. Valley
John Williams Valley (born February 28, 1948, in Winchester, Massachusetts) is an American geochemist and petrologist. He is an expert on stable isotope geochemistry, especially as applied to understanding the evolution of the Earth's crust. Biography Valley grew up in Lexington, Massachusetts, and started collecting rocks when he was four years old. He studied geology at Dartmouth College (AB 1970) and at the University of Michigan The University of Michigan (U-M, U of M, or Michigan) is a public university, public research university in Ann Arbor, Michigan, United States. Founded in 1817, it is the oldest institution of higher education in the state. The University of Mi ... (MS 1977, PhD 1980) He was an assistant professor at Rice University (1980-1983) before moving to the University of Wisconsin, Madison, where he was an assistant professor (1983-1985), associate professor (1985-1989), and full professor from 1989 until his retirement in 2019 as professor emeritus. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Winchester, Massachusetts
Winchester is a town in Middlesex County, Massachusetts, United States, located 8.2 miles (13.2 km) north of downtown Boston as part of the Greater Boston metropolitan area. It is also one of the List of Massachusetts locations by per capita income, wealthiest municipalities in Massachusetts. The population was 22,970 at the 2020 United States Census. History Native Americans in the United States, Native Americans inhabited the area that would become Winchester for thousands of years prior to European colonization of the Americas. At the time of contact, the area was inhabited by the Naumkeag people, from whom the land that would become Winchester was purchased for the settlement of Charlestown in 1639. From the 17th century until the middle of the 19th century, parts of Arlington, Massachusetts, Arlington, Medford, Massachusetts, Medford, Cambridge, Massachusetts, Cambridge, and Woburn, Massachusetts, Woburn comprised what is now Winchester. In the early years of the settl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
