Reginald Aldworth Daly

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Reginald Aldworth Daly
Reginald Aldworth Daly
Born	March 18, 1871
Died	September 19, 1957
Nationality	Canadian
Fields	geology
Institutions	Harvard University
Notable awards	Penrose Medal in 1935 William Bowie Medal in 1946

Reginald Aldworth Daly (March 18, 1871 – September 19, 1957) was a Canadian geologist. He was a professor at Harvard University from 1912 until 1942, after working as a field geologist for the Canadian International Boundary Commission.

He examined the rocks along a 400 miles stretch at the 49th parallel, which led him to formulate a theory of the origins of igneous rocks, and published his seminal work Igneous Rocks and Their Origin in 1914. According to Bill Bryson's "A Short History of Nearly Everything," he was an early proponent of both Arthur Holmes' Continental drift theory and the impact theory of lunar creation.

Daly was awarded the Penrose Medal in 1935 and the William Bowie Medal in 1946. Craters on Mars and the Moon are named in his honor, and his Cambridge house (the Reginald A. Daly House) is now a National Historic Landmark.

[edit] Bibliography

• Daly, R A (1935), “Densities of Rocks Calculated from Their Chemical Analyses.”, Proc. Natl. Acad. Sci. U.S.A. 21 (12): 657-63, 1935 Dec, PMID:16588027, <http://www.ncbi.nlm.nih.gov/pubmed/16588027> 
• Daly (1933), THE DEPTHS OF THE EARTH., vol. 77 (published 1933 Jan 27), pp. 95-102, PMID:17797838, doi:10.1126/science.77.1987.95, <http://www.ncbi.nlm.nih.gov/pubmed/17797838> 
• Daly (1931), GARDINER ON CORAL REEFS., vol. 74 (published 1931 Dec 4), pp. 566-567, PMID:17807633, doi:10.1126/science.74.1927.566, <http://www.ncbi.nlm.nih.gov/pubmed/17807633> 
• Daly, R A (1920), “A General Sinking of Sea-Level in Recent Time.”, Proc. Natl. Acad. Sci. U.S.A. 6 (5): 246-50, 1920 May, PMID:16586806, <http://www.ncbi.nlm.nih.gov/pubmed/16586806> 
• Daly, R A (1917), “Low-Temperature Formation of Alkaline Feldspars in Limestones.”, Proc. Natl. Acad. Sci. U.S.A. 3 (11): 659-65, 1917 Nov, PMID:16576265, <http://www.ncbi.nlm.nih.gov/pubmed/16576265> 
• Daly, R A (1916), “A New Test of the Subsidence Theory of Coral Reefs.”, Proc. Natl. Acad. Sci. U.S.A. 2 (12): 664-70, 1916 Dec, PMID:16586654, <http://www.ncbi.nlm.nih.gov/pubmed/16586654> 
• Daly (1901), “NOTES ON OCEANOGRAPHY.”, Science 13 (337): 951-954, 1901 Jun 14, PMID:17733661, doi:10.1126/science.13.337.951, <http://www.ncbi.nlm.nih.gov/pubmed/17733661> 
• Daly (1901), SCIENTIFIC EXPEDITION TO ICELAND, GREENLAND AND LABRADOR., vol. 13 (published 1901 Feb 1), pp. 192, PMID:17816318, doi:10.1126/science.13.318.192, <http://www.ncbi.nlm.nih.gov/pubmed/17816318>