| Abstract: | The Kap Kobenhavn Formation crops out in Greenland at 80??N latitude and marks the most northerly onshore Pliocene locality known. The sands and silts that comprise the formation were deposited in marginal marine and shallow marine environments. An abundant and diverse vertebrate and invertebrate fauna and plant megafossil flora provide age and paleoclimatic constraints. The age estimated for the Kap Kobenhavn ranges from 2.0 to 3.0 million years old. Winter and summer bottom water paleotemperatures were estimated on the basis of the ostracode assemblages. The marine ostracode fauna in units B1 and B2 indicate a subfrigid to frigid marine climate, with estimated minimum sea bottom temperatures (SBT) of -2??C and estimated maximum SBT of 6-8??C. Sediments assigned to unit B2 at locality 72 contain a higher proportion of warm water genera, and the maximum SBT is estimated at 9-10??C. The marginal marine fauna in the uppermost unit B3 (locality 68) indicates a cold temperate to subfrigid marine climate, with an estimated minimum SBT of -2??C and an estimated maximum SBT ranging as high as 12-14??C. These temperatures indicated that, on the average, the Kap Kobenhavn winters in the late Pliocene were similar to or perhaps 1-2??C warmer than winters today and that summer temperatures were 7-8??C warmer than today. -from Authors |
| Genre: | Article |
| ProdID: | 70014904 |
| Citation Author: | Brouwers, E. M.; Jorgensen, N. O.; Cronin, T. M. |
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| Citation End Page: | 267 |
| Citation Issue: | 3 |
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| Citation Language: | English |
| Citation Larger Work Title: | Micropaleontology |
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| Citation Number Of Pages: | 23 |
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| Citation Search Results Text: | Climatic significance of the ostracode fauna from the Pliocene Kap Kobenhavn Formation, north Greenland; 1991; Article; Journal; Micropaleontology; Brouwers, E. M.; Jorgensen, N. O.; Cronin, T. M. |
| Citation Start Page: | 245 |
| Citation Volume: | 37 |
| Citation Year: | 1991 |
| Type: | citation/reference |
| Text: | Climatic significance of the ostracode fauna from the Pliocene Kap Kobenhavn Formation, north Greenland; 1991; Article; Journal; Micropaleontology; Brouwers, E. M.; Jorgensen, N. O.; Cronin, T. M. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Tue, 1 Jan 1991 00:00 -0600 |
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