Isotopes, Ice Ages, and Terminal Proterozoic Earth History
| Title: | Isotopes, Ice Ages, and Terminal Proterozoic Earth History |
| Author: |
Knoll, Andrew; Narbonne, Guy M.; Kaufman, Alan J.
Note: Order does not necessarily reflect citation order of authors. |
| Citation: | Kaufman, Alan J., Andrew H. Knoll, and Guy M. Narbonne. 1997. Isotopes, ice ages, and terminal Proterozoic earth history. Proceedings of the National Academy of Sciences of the United States of America 94, no. 13: 6600-6605. |
| Access Status: | At the direction of the depositing author this work is not currently accessible through DASH. |
| Full Text & Related Files: |
Knoll_IsotopesIceAges.pdf (371.6Kb; PDF) 
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| Abstract: | Detailed correlations of ancient glacial deposits, based on temporal records of carbon acid strontium isotopes in seawater, indicate four (and perhaps five) discrete ice ages in the terminal Proterozoic Eon. The close and repeated stratigraphic relationship between C-isotopic excursions and glaciogenic rocks suggests that unusually high rates of organic carbon burial facilitated glaciation by reducing atmospheric greenhouse capacity. The emerging framework of time and environmental change contributes to the improved resolution of stratigraphic and evolutionary pattern in the early fossil record of animals. |
| Published Version: | http://dx.doi.org/10.1073/pnas.94.13.6600 |
| Other Sources: | http://www.pnas.org/content/94/13/6600.full |
| Citable link to this page: | http://nrs.harvard.edu/urn-3:HUL.InstRepos:3119541 |
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