• Thumbnail for Esper Signius Larsen
    Esper Signius Larsen, Jr. (14 March 1879 – 8 March 1961) was an American geologist and petrologist who contributed to techniques for age estimation using...
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  • region to study copper deposits of the Ducktown type. In 1919, with Esper S. Larsen, Jr., he made geologic maps of the southern end of the San Luis Valley...
    7 KB (772 words) - 19:47, 18 August 2023
  • Thumbnail for Wildhorse Peak
    Retrieved 2021-07-08. Esper S. Larsen, Jr., Whitman Cross, Geology and Petrology of the San Juan Region Southwestern Colorado, 1956, U.S. Government Printing...
    5 KB (396 words) - 03:58, 28 June 2023
  • University, where he studied under Percy Bridgman and the mineralogist Esper S. Larsen, Jr. (1879–1961). In 1945 Van Valkenburg became employed at the National...
    7 KB (921 words) - 20:02, 29 January 2024
  • Arthur Holmes 1955 Maurice Gignoux 1954 Arthur Francis Buddington 1953 Esper S. Larsen, Jr. 1952 George Gaylord Simpson 1951 Pentti Eskola 1950 Morley Evans...
    5 KB (514 words) - 17:02, 9 February 2024
  • Thumbnail for Nicholas C. Creede
    Call, July 13, 1897 New York Sun, July 14, 1897 Emmons, William H.; Esper S. Larsen (1923). "Bulletin 718: Geology and Ore Deposits of the Creede District...
    39 KB (4,362 words) - 03:01, 20 February 2024
  • stage actor Emanuel Larsen (1823–1859), Danish painter Esper Signius Larsen, Jr. (1879–1961), American petrologist Frederick Niels Larsen (1932–2019), American...
    6 KB (764 words) - 05:31, 6 February 2024
  • Thumbnail for Tilleyite
    occurrence at the Crestmore Quarry in Riverside County, California in 1932 by Esper Larsen and Kingsley Dunham, and named after Cecil Edgar Tilley (1894-1973),...
    5 KB (382 words) - 14:14, 7 December 2023
  • Thumbnail for William Thomas Pecora
    concentrating on optical mineralogy and petrography under the professor Esper S. Larsen, Jr. Larsen encouraged Pecora to look for a thesis study area in the vicinity...
    15 KB (1,484 words) - 00:33, 19 March 2024
  • Eskola (1883–1964) Esperite: PbCa3Zn4(SiO4)4 – American petrologist Esper S. Larsen Jr. (1879–1961), Harvard University (Originally called calcium larsenite)...
    57 KB (5,326 words) - 10:17, 26 July 2024