Charles Whitman Cross
Charles Whitman Cross , called Whitman Cross , (born September 1, 1854 in Amherst , Massachusetts , † April 20, 1949 in Chevy Chase , Maryland ) was an American geologist and petrographer .
Life
Cross attended Amherst College with a bachelor's degree in 1875 and studied from 1877 at the University of Göttingen and the University of Leipzig , where he received his doctorate in 1880 under Ferdinand Zirkel . He then worked for the US Geological Survey until his retirement in 1925 .
He worked for the US Geological Survey, especially in Colorado (mapping in the rugged San Juan Mountains, some with Esper S. Larsen ) and Wyoming (Leucite Hills) and Hawaii (Lava classification, while also Trachyt discovered on the islands) . A (chemical) classification system for igneous rocks is named after him and Joseph P. Iddings , Louis V. Pirsson and Henry Stephens Washington ( CIPW classification after the first letters of the authors' last names).
In 1918 he was President of the Geological Society of America . He was a member of the National Academy of Sciences (1908).
He had been married since 1895 and had a son. In retirement, he dedicated himself to growing roses and also created some commercially marketed rose varieties.
Scientific initial descriptions
The following igneous rocks were first scientifically described by Cross in 1897:
Fonts
- Igneous Rocks of the Leucite Hills and Pilot Butte, Wyoming, American Journal of Science, 4th ser., 4 (1897), pp. 115-141
- Lavas of Hawaii and Their Relations, US Geological Survey Professional Paper no.88, Washington, DC, 1915
- with Larsen: Geology and Petrology of the San Juan Region of South-western Colorado, US Geological Survey Professional Paper no.258, Washington, DC, 1956, online
literature
- Esper S. Larsen, Biographical Memoirs National Academy
- HS Yoder: Cross, Charles Whitman, Dictionary of Scientific Biography
References and comments
- ↑ Before that it was assumed that only basalt was found.
- ↑ Cross, Iddings, Pirsson, Washington: Quantitative Classification of Igneous Rocks, Based on Chemical and Mineral Characters, with systematic nomenclature, University of Chicago Press 1903
- ↑ Cross, Iddings, Pirsson, Washington, A Quantitative Chemicomineralogical Classification and Nomenclature of Igneous Rocks, Journal of Geology, 10 (1902), 555-690
personal data | |
---|---|
SURNAME | Cross, Charles Whitman |
ALTERNATIVE NAMES | Cross, Whitman |
BRIEF DESCRIPTION | American geologist and petrographer |
DATE OF BIRTH | September 1, 1854 |
PLACE OF BIRTH | Amherst , Massachusetts |
DATE OF DEATH | April 20, 1949 |
Place of death | Chevy Chase , Maryland |