Carbon Isotope Geochemistry of the Orinoco Basin
Stable carbon isotope ratios have been used to study the sources of particulate organic carbon (POC) and total dissolved inorganic carbon in the Orinoco Basin. The isotopic composition of total dissolved inorganic carbon shows a range of from -8·1 to -23·0 ppt, an indication of dominance of biologic...
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| Veröffentlicht in: | Estuarine, coastal and shelf science coastal and shelf science, 1993-06, Vol.36 (6), p.541-547 |
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| container_title | Estuarine, coastal and shelf science |
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| creator | Tan, F.C. Edmond, J.M. |
| description | Stable carbon isotope ratios have been used to study the sources of particulate organic carbon (POC) and total dissolved inorganic carbon in the Orinoco Basin. The isotopic composition of total dissolved inorganic carbon shows a range of from -8·1 to -23·0 ppt, an indication of dominance of biological processes. The isotopic composition of POC exhibits a range of from -24·1 to -34·6 ppt with little seasonal variation. The isotopic evidence indicates that the POC is predominantly of terrestrial origin rather than a result of
in situ planktonic production. The similarity of isotopic composition of POC and coastal sediments suggests that riverine organic detritus has been transported 30-50 km offshore in a direction parallel to the Orinoco river channel. |
| doi_str_mv | 10.1006/ecss.1993.1033 |
| format | Article |
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in situ planktonic production. The similarity of isotopic composition of POC and coastal sediments suggests that riverine organic detritus has been transported 30-50 km offshore in a direction parallel to the Orinoco river channel.</description><subject>Coastal oceanography, estuaries. Regional oceanography</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>External geophysics</subject><subject>Isotope geochemistry</subject><subject>Isotope geochemistry. Geochronology</subject><subject>isotope ratios</subject><subject>Orinoco River</subject><subject>particulate organic carbon</subject><subject>Physics of the oceans</subject><subject>sources</subject><subject>total dissolved inorganic carbon</subject><subject>transport</subject><issn>0272-7714</issn><issn>1096-0015</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1993</creationdate><recordtype>article</recordtype><recordid>eNp1j0FLAzEQRoMoWKtXz3vwunWSbJLNUYvWQqEXPYdsMqGRdlOSRei_d5eKt56GGb43M4-QRwoLCiCf0ZWyoFrzseX8iswoaFkDUHFNZsAUq5WizS25K-V7nFLB2YzA0uYu9dW6pCEdsVphcjs8xDLkU5VCNeyw2ubYJ5eqV1tif09ugt0XfPirc_L1_va5_Kg329V6-bKpLeftUHPmA0jBZKNaLzV0gVknmFceKGDXCmiEVsyC71CB0IFyrjsElIrJoBs-J4vzXpdTKRmDOeZ4sPlkKJjJ10y-ZvI1k-8IPJ2Boy3O7kO2vYvln2paLbUUY6w9x3B8_idiNsVF7B36mNENxqd46cIv8stnUQ</recordid><startdate>19930601</startdate><enddate>19930601</enddate><creator>Tan, F.C.</creator><creator>Edmond, J.M.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>19930601</creationdate><title>Carbon Isotope Geochemistry of the Orinoco Basin</title><author>Tan, F.C. ; Edmond, J.M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a338t-32df06526478d690bf2ac52d7d010eb85045972a0dbe7059f1339be0e6726f943</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1993</creationdate><topic>Coastal oceanography, estuaries. Regional oceanography</topic><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>External geophysics</topic><topic>Isotope geochemistry</topic><topic>Isotope geochemistry. Geochronology</topic><topic>isotope ratios</topic><topic>Orinoco River</topic><topic>particulate organic carbon</topic><topic>Physics of the oceans</topic><topic>sources</topic><topic>total dissolved inorganic carbon</topic><topic>transport</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Tan, F.C.</creatorcontrib><creatorcontrib>Edmond, J.M.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Estuarine, coastal and shelf science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tan, F.C.</au><au>Edmond, J.M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Carbon Isotope Geochemistry of the Orinoco Basin</atitle><jtitle>Estuarine, coastal and shelf science</jtitle><date>1993-06-01</date><risdate>1993</risdate><volume>36</volume><issue>6</issue><spage>541</spage><epage>547</epage><pages>541-547</pages><issn>0272-7714</issn><eissn>1096-0015</eissn><coden>ECSSD3</coden><abstract>Stable carbon isotope ratios have been used to study the sources of particulate organic carbon (POC) and total dissolved inorganic carbon in the Orinoco Basin. The isotopic composition of total dissolved inorganic carbon shows a range of from -8·1 to -23·0 ppt, an indication of dominance of biological processes. The isotopic composition of POC exhibits a range of from -24·1 to -34·6 ppt with little seasonal variation. The isotopic evidence indicates that the POC is predominantly of terrestrial origin rather than a result of
in situ planktonic production. The similarity of isotopic composition of POC and coastal sediments suggests that riverine organic detritus has been transported 30-50 km offshore in a direction parallel to the Orinoco river channel.</abstract><cop>London</cop><pub>Elsevier Ltd</pub><doi>10.1006/ecss.1993.1033</doi><tpages>7</tpages></addata></record> |
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| ispartof | Estuarine, coastal and shelf science, 1993-06, Vol.36 (6), p.541-547 |
| issn | 0272-7714 1096-0015 |
| language | eng |
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| source | Access via ScienceDirect (Elsevier) |
| subjects | Coastal oceanography, estuaries. Regional oceanography Earth sciences Earth, ocean, space Exact sciences and technology External geophysics Isotope geochemistry Isotope geochemistry. Geochronology isotope ratios Orinoco River particulate organic carbon Physics of the oceans sources total dissolved inorganic carbon transport |
| title | Carbon Isotope Geochemistry of the Orinoco Basin |
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