 |
|||||||||||||||||||||||
 |
|
|
|
|||||
|
 |
 |
Biography of Thomas Chrowder ChamberlinName: Thomas Chrowder ChamberlinBirth Date: September 25, 1843 Death Date: November 15, 1928 Place of Birth: Mattoon, Illinois, United States Nationality: American Gender: Male Occupations: geologist Thomas Chrowder Chamberlin Thomas Chrowder Chamberlin (1843-1928), the leading American geologist of his time, was known primarily as a glacialist and as an outstanding contributor to theoretical geology, particularly for his "planetesimal" theory of the origin of the planets.Thomas Chamberlin was born on Sept. 25, 1843, in Mattoon, III., the son of a Methodist minister. In 1866 Chamberlin received a bachelor of arts degree from Beloit College and the next year married Alma Wilson. After a year of graduate study at the University of Wisconsin he became professor of natural sciences at the State Normal School, Whitewater, Wis. (1870-1873).Chamberlin then went to Beloit College as professor of geology and began his career as a student of earth history. The glacial deposits around Beloit revealed dramatically that the climatic conditions in past ages differed sharply from current conditions. Chamberlin followed this obvious fact into a consideration of earth climates through the known range of geological time and …showed first 150 words…
…showed last 150 words…bear upon the problem. His theory grew out of efforts to test the long-standing nebular hypothesis. Chamberlin proposed that a star crossing close to the path of the sun caused a partial disruption of the sun. Materials were expelled and formed into great and small masses. Swarms of the minute particles solidified into what Chamberlin called "planetesimals." These in turn were drawn into the larger masses, which, moving in elliptical orbits, formed the planets of the solar system. Further Reading The only full-length study of Chamberlin is George L. Collie and Hiram D. Densmore, Thomas C. Chamberlin and Rollin D. Salisbury: A Beloit College Partnership (1932). For Chamberlin's life and work see Carroll Lane Fenton and Mildred Adams Fenton, Giants of Geology (1952; 1945 ed. entitled The Story of the Great Geologists). A summary of Chamberlin's survey of Wisconsin in 1876 is included in George P. Merrill, The First Hundred Years of American Geology (1924). |