Stable isotope organic chemistry of ODP Leg 105 sites
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
1989
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| _version_ | 1867172221833707520 |
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| author | Macko, Stephen A |
| author_facet | Macko, Stephen A |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Stable carbon and nitrogen isotopic compositions as well as organic carbon and total nitrogen contents are reported for Site 645 in Baffin Bay and Sites 646 and 647 in the Labrador Sea. Both low-resolution analyses (1 sample/section) and high-resolution results (up to 7 samples/section) are presented. These records indicate that large-scale changes in productivity since the middle Miocene have occurred in Baffin Bay. Such changes are not evident in samples from the Labrador Sea. Isotopic records of all the sites are influenced strongly by rapidly changing influxes that combine terrigenous debris with planktonic production. In parts of the cores, relationships to other phenomena, such as ice stages, are present. However, these correlations are not common and indicate that these events were masked by the dynamic changes in sources of organic matter occurring in this complex system. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_744831 |
| institution | PANGAEA |
| language | en |
| publishDate | 1989 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Stable isotope organic chemistry of ODP Leg 105 sites Macko, Stephen A 105-645A; 105-645B; 105-645C; 105-645D; 105-645E; 105-645F; 105-645G; 105-646A; 105-646B; 105-647A; 105-647B; Baffin Bay; DRILL; Drilling/drill rig; Joides Resolution; Labrador Sea; Leg105; North Atlantic Ocean; Ocean Drilling Program; ODP Stable carbon and nitrogen isotopic compositions as well as organic carbon and total nitrogen contents are reported for Site 645 in Baffin Bay and Sites 646 and 647 in the Labrador Sea. Both low-resolution analyses (1 sample/section) and high-resolution results (up to 7 samples/section) are presented. These records indicate that large-scale changes in productivity since the middle Miocene have occurred in Baffin Bay. Such changes are not evident in samples from the Labrador Sea. Isotopic records of all the sites are influenced strongly by rapidly changing influxes that combine terrigenous debris with planktonic production. In parts of the cores, relationships to other phenomena, such as ice stages, are present. However, these correlations are not common and indicate that these events were masked by the dynamic changes in sources of organic matter occurring in this complex system. |
| title | Stable isotope organic chemistry of ODP Leg 105 sites |
| topic | 105-645A; 105-645B; 105-645C; 105-645D; 105-645E; 105-645F; 105-645G; 105-646A; 105-646B; 105-647A; 105-647B; Baffin Bay; DRILL; Drilling/drill rig; Joides Resolution; Labrador Sea; Leg105; North Atlantic Ocean; Ocean Drilling Program; ODP |
| url | https://doi.org/10.1594/PANGAEA.744831 |