Thomas "Tom" Seward Lovering (May 12, 1896,St. Paul, Minnesota – April 9, 1991,Santa Barbara, California)[1] was an American geologist, known for his innovative field and laboratory research on relations between mineableore deposits and hydrothermal alteration ofwall rock.[2]
During WW I, Thomas S. Lovering volunteered for the U.S. Navy and was trained as a naval aviator, but the war ended before he was assigned to combat duty. In 1919 he matriculated at theUniversity of Minnesota School of Mines, where he graduated in 1922 with an E.M. (engineer of mines) degree. He then became a graduate student in geology at theUniversity of Minnesota. There he graduated in 1923 with an M.S. in geology and in 1924 with a Ph.D. ineconomic geology. At theUniversity of Minnesota, he learned from his professorsFrank F. Grout and John W. Gruner about the hydrothermal processes that form ores. For the academic year 1924–1925, Lovering was an instructor in theUniversity of Arizona's department of geology. In 1925 he joined theU.S. Geological Survey (USGS) to do research, under the supervision of Bert Sylvenus Butler (1877–1960), on mining districts inColorado'sFront Range. In 1934 Lovering resigned from the USGS and became an associate professor in theUniversity of Michigan's department of geology and mineralogy. From 1934 to 1942 he performed extensive laboratory investigations as a professor and during the summers he worked in Colorado for the USGS by investigating mining districts and participating in regional mapping projects in geology. In 1942 he took a leave of absence from the University of Michigan to rejoin the USGS full-time for war service during WW II. He worked in the USGS's Strategic Minerals Program and produced several reports on ore bodies in Colorado.[2] In 1943Prentice-Hall published his bookMinerals in World Affairs, which explains the importance of various essential minerals in terms of utilization, technology, geology, and international distribution.[3][4] After WW II ended, he resumed his professorship at the University of Michigan for the academic year but resigned in 1947 to accept a permanent position in the USGS's Mineral Deposits Branch. He continued this employment until 1966 when he retired at age 70.[2] In retirement he lived inLakewood, Colorado (near USGS regional headquarters) for about 10 years. During his retirement years, he held an appointment as research professor at the University of Arizona and lectured at theUniversity of Texas at Austin and theUniversity of Utah atSalt Lake City.[5] In 1976 he moved from Lakewood, Colorado to Santa Barbara, California, where he became a research associate at theUniversity of California, Santa Barbara.[1]
Lovering researched geochemistry of wall-rock alterations caused by magmatic hydrothermal effects, as typified in Colorado'sBoulder County tungsten and gold district and inUtah's East Tintic mining district. Some of his geological and hydrothermal alteration maps were widely used in Utah by private mining and exploration groups, leading to the discovery of ore deposits and the development of two major new mines.[2]
In 1949 Lovering was elected a member of theNational Academy of Sciences.[6] In 1965 theSociety of Economic Geologists (SEG) awarded him thePenrose Gold Medal.[2] In 1965 he also received theDaniel C. Jackling Award from the American Institute of Mining, and Metallurgical Engineers (AIMME).[7]
In October 1919, Thomas S. Lovering married Alexina Corinne Gray (1895–1969), and had a son, Thomas G. Lovering (1921–1996). After his first wife died, Thomas S. Lovering married Mildred Stewart, who died in 1983.[1]
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