Chamberlin , Thomas Chrowder
(1843–1928) American geologist
Chamberlin came from a farming background in Mattoon, Illinois. His discovery of fossils in a local limestone quarry aroused his interest in geology, which he pursued at the University of Michigan. He worked for the Wisconsin Geological Survey from 1873, serving as chief geologist for the period 1876–82. From 1881 until 1904 he was in charge of the glacial division of the US Geological Survey. After a period as president of the University of Wisconsin (1887–92) he became professor of geology at the University of Chicago (1892–1918).
Apart from his work on the geological surveys, Chamberlin's most significant work was in the field of glaciation. Early work on glaciation had assumed that there had been one great ice age but James Geikie, in his The Great Ice Age (1874–84), had begun collecting evidence that there had been several ice ages separated by nonglacial epochs. Chamberlin contributed the chapter on North America to Geikie's work. He showed that drift deposits are composed of at least three layers and went on to establish four major ice ages, which were named the Nebraskan, Kansan, Illinoian, and Wisconsin after the states in which they were most easily studied.
Together with the astronomer Forest Moulton, Chamberlin formulated, in 1906, the planetismal hypothesis on the origin of the planets in the solar system. They supposed that a star had passed close to the Sun causing matter to be pulled out of both. Within the gravitational field of the Sun this gaseous matter would condense into small planetesimals, and eventually into planets. The theory was published in The Two Solar Families (1928) but it has little support today as it cannot account for the distribution of angular momentum in the solar system.

Scientists. . 2011.

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  • Chamberlin,Thomas Chrowder — Cham·ber·lin (chāmʹbər lĭn), Thomas Chrowder. 1843 1928. American geologist who with the astronomer Forest Ray Moulton (1872 1952) proposed (1906) the planetismal hypothesis for the formation of the planets in the solar system. * * * …   Universalium

  • Chamberlin, Thomas Chrowder — ▪ American geologist born Sept. 25, 1843, Mattoon, Ill., U.S. died Nov. 15, 1928, Chicago  U.S. geologist and educator who proposed the planetesimal hypothesis, which held that a star once passed near the Sun, pulling away from it matter that… …   Universalium

  • Thomas Chrowder Chamberlin — Infobox Scientist name = PAGENAME box width = image size =150px caption = PAGENAME birth date = September 25,1843 birth place = Mattoon, Illinois death date = November 15, 1928 death place = Chicago residence = citizenship = nationality =… …   Wikipedia

  • Thomas Chrowder Chamberlin — um 1875 Thomas Chrowder Chamberlin (* 25. September 1843 in Mattoon, Illinois; † 15. November 1928 in Chicago) war ein US amerikanischer Geologe. Von 1873 bis 1882 war er Professor am Beloit College, Wisconsin. Er arbeitete auch für …   Deutsch Wikipedia

  • Chamberlin (surname) — Chamberlin is a surname, and may refer to Beth Chamberlin Clarence Duncan Chamberlin, an American aviator Donald D. Chamberlin, a computer scientist, co designer of the SQL database language Edson Joseph Chamberlin, railroads Edward Chamberlin,… …   Wikipedia

  • Chamberlin — ist der Familienname folgender Personen: Beth Chamberlin (* 1963), US amerikanische Schauspielerin Clarence Duncan Chamberlin (1893–1976), US amerikanischer Flieger Edward Hastings Chamberlin (1899–1967), US amerikanischer Nationalökonom Guy… …   Deutsch Wikipedia

  • Chamberlin — [chām′bər lin] Thomas Chrowder [krou′dər] 1843 1928; U.S. geologist * * * …   Universalium

  • Chamberlin — [chām′bər lin] Thomas Chrowder [krou′dər] 1843 1928; U.S. geologist …   English World dictionary

  • Chamberlin–Moulton planetesimal hypothesis — The Chamberlin–Moulton planetesimal hypothesis was proposed in 1905 by geologist Thomas Chrowder Chamberlin and astronomer Forest Ray Moulton to describe the formation of the solar system. It was proposed as a replacement for the Laplacian… …   Wikipedia

  • Chamberlin — biographical name Thomas Chrowder 1843 1928 American geologist …   New Collegiate Dictionary

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