|Born||24 December 1895|
|Doctoral advisor||Arthur R. Barwick|
Marguerite Thomas Williams (born Marguerite Thomas; December 24, 1895 – August 17, 1991) was an American geologist. She was the first African American to earn a doctorate in geology in the United States.
Early years and education
Marguerite Thomas was the sixth of six children born to Henry C. and Clara E. Thomas. She attended Washington Normal School #2, now known as the University of the District of Columbia. She graduated from the two-year teacher-training program at the Normal School for Colored Girls in June 1916, with a scholarship to Howard University. Dr. Kelly Miller of Howard University delivered the address to the graduates and a song, written by Thomas for the occasion, was sung. She went on to earn a Bachelor of Arts degree from Howard University in 1923 where she was mentored by African American biologist Ernest Everett Just. While earning her Bachelor's degree, Thomas worked as an elementary school teacher. After finishing her degree, she returned to the Normal School to teach as an assistant professor and work with the school's theater group.
Thomas was granted a leave from the Miner Teachers College (Normal School for Colored Girls) to pursue her master's degree in geology at Columbia University, which she completed in 1930. After completing her master's degree, Thomas married Dr. Otis James Williams, D.D.S., and took his name.
In 1942, she completed her PhD dissertation, The History of Erosion in the Anacostia Drainage Basin, at Catholic University of America in Washington, D.C. This made her the first African American to earn a doctorate in geology in the United States. Her dissertation was later published by the Catholic University of America Press.
In her dissertation, Williams sought to explore the factors that eventually lead to the erosion observed in the Anacostia River. Little had been done in terms of examining the upper and lower regions of the river and the basin sedimentation. The flooding of Bladensburg, Maryland, precipitated the erosion and necessitated investigation. She concluded that, in addition to natural erosion, human activities, including deforestation, agriculture and urbanization, accelerated the process.
Williams spent most of her career teaching courses on geology and the social sciences. After gaining her PhD in 1942, she was promoted to full professor at Miner Teachers College. For a decade, from 1923-1933, she was Chair of the Division of Geography at the Miner Teachers College (Normal School for Colored Girls). In addition to teaching and serving as chair, she also taught at Howard University during the 1940s. She retired in 1955.
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- Warren, Winifred (2000). Black Women Scientists in the United States. Bloomington: Indiana University Press. p. 267. ISBN 0253336031.
- Titcomb, Caldwell (30 March 1997). "The Earliest Ph.D. Awards to Blacks in the Natural Sciences". The Journal of Blacks in Higher Education. ProQuest 195551578.
- Williams, Marguerite Thomas (1942). A History of Erosion in the Anacostia Drainage Basin. Maryland and Washington, DC: Catholic University of America Press. OCLC 608253240.
- Williams, M.T. (1942). A History of Erosion in the Anacostia Drainage Basin. OP31248 University Microfilms International, The Taylor Family Digital Library
- "The Faces of Science: African Americans in the Sciences". Archived from the original on 25 October 2006. Retrieved 8 March 2014.
- "Women's History Month: Marguerite Thomas Williams". udc.edu. University of District Columbia. Retrieved 5 February 2018.