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Lawrence Alexander Hardie (January 13, 1933 – December 17, 2013) was an American geologist, sedimentologist, and geochemist. For nearly 50 years, he mentored students and pursued research as a Professor at Johns Hopkins University (JHU) in Baltimore MD in the Department of Earth and Planetary Sciences. He authored or co-authored numerous scientific papers and several books. He made seminal contributions to our understanding of evaporites, dolomitization, cyclical deposition of carbonate sediments, and plate tectonic driven changes in seawater chemistry.〔2003 Annual Report of the Society for Sedimentary Geology (SEPM). http://www.sepm.org/CM_Files/SocietyRecords/2003.pdf〕 In the latter, he proposed that changes in the seafloor spreading rates at mid-ocean ridges have altered the composition of seawater throughout earth history, producing oscillations in the mineralogy of carbonate and evaporite precipitates.〔Johns Hopkins Magazine, February 2002, Vol. 54, No. 1. http://pages.jh.edu/~jhumag/0202web/wholly.html#sea〕 Specifically citing these scientific contributions, the Society for Sedimentary Geology (SEPM) awarded him the Francis J. Pettijohn Medal in 2003.〔 == Early life and education == He was born in Durban, Natal, South Africa, on January 13, 1933.〔 He attended the University of Natal, Durban, originally to pursue an undergraduate degree in chemistry. He was inspired to study geology after attending lectures by eminent South African geologist Lester Charles King.〔Johns Hopkins University, Department of Earth & Planetary Sciences, Department News Archive, December 20, 2013. http://eps.jhu.edu/about/archive/〕 In addition to his new found passion for geology, soccer was a big part of Lawrence's life during this time.〔 As a student, he was selected as a member of the South African Universities "All Star" team four times. He earned a B.Sc. degree in Geology and Chemistry in 1955, and a B.Sc. (Hons.) degree in Geology in 1956. In 1957, he was hired by Dr. King as an Instructor and began by teaching beginning classes in geology. At the same time he started to work on his Master's thesis on the origin of the Table Mountain Sandstone. He earned an M.Sc. in Geology in 1959 under the guidance of Drs. Peter Matthews and Joseph Frankel. In 1960, he was awarded a Fellowship by the South African Council for Scientific and Industrial Research to spend an academic year in the U.S. He went to Johns Hopkins University and began working with sedimentologist Dr. Francis J. Pettijohn and geochemist Dr. Hans Eugster, in a newly built geochemistry laboratory.〔〔JHU University News, January 28, 2014. http://hub.jhu.edu/2014/01/28/lawrence-hardie-eps〕 There he conducted experimental work on evaporite minerals. Near the end of his second semester, he was offered a full-time graduate fellowship to earn a Ph.D. He briefly returned to South Africa to marry Glenys Kathleen Smith in Durban.〔 Upon graduating with a Ph.D. in 1965, he was offered a position as an assistant professor at Hopkins.〔 Both Lawrence and Glenys became U.S. citizens and they had two children, Deborah and Russell.〔 Lawrence shared his love of the natural world and of science with his children. Deborah obtained a degree in mathematics at JHU, and Russell studied engineering at nearby Loyola University Maryland. His son Russell is currently a professor in the department of Electrical and Computer Engineering at the University of Dayton and credits his father as his inspiration for pursuing a career in academia.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Lawrence Alexander Hardie」の詳細全文を読む スポンサード リンク
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