Organic carbon variations in estuarine sediments |
| |
| Authors: | David J Shultz John A Calder |
| |
| Institution: | Department of Oceanography, Florida State University, Tallahassee, FL 32306, U.S.A. |
| |
| Abstract: | The δC13 value for sedimentary organic carbon in four estuaries of the Gulf of Mexico increases with radial distance from the river mouth. Mass balance calculations indicate that terrestrial organic carbon is limited to sediments within a relatively short distance from the river mouth. This distance is a function of the discharge rate of the river. For the Mississippi River, terrestrial organic carbon is limited to sediments within 69 km of the mouth of Pass à Loutre and 61 km of South Pass. These data indicate that the low δC13 (< ?22%.) values reported for Pleistocene sediments in the Gulf of Mexico may be the result of factors in addition to the postulated large influx of terrestrial organic carbon. |
| |
| Keywords: | To whom correspondence should be addressed |
| 本文献已被 ScienceDirect 等数据库收录！ |
