Organic carbon concentrations in ODP Hole 105-645E
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
1989
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| _version_ | 1867169032627552256 |
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| author | ten Haven, H Lo Rullkötter, Jürgen |
| author_facet | ten Haven, H Lo Rullkötter, Jürgen |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The aliphatic hydrocarbon fractions of eight early Miocene to Pliocene sediment samples from Hole 645E (Baffin Bay; ODP Leg 105) were investigated by gas chromatography and gas chromatography/mass spectrometry. Long, straight-chain alkanes of terrigenous origin are often present as major compounds. Other terrigenous biological markers include three oleanenes with a double bond at positions 12, 13(18), or 18, and taraxer-14-ene. Urs-12-ene is identified tentatively. In the three deepest samples, 17a(H), 18a(H), and 210(H)-28, 30-bisnorhopane is the most abundant compound. Several new compounds were detected, some of which are tentatively identified. The identification and possible significance of 23-norlupane, three A/B-ring nuclear demethylated (or A-nor-) oleanenes, and an A/B-ring nuclear demethylated (or A-nor-) urs-12-ene are discussed. The authors postulate that taraxer-14-ene isomerizes to olean-12-ene with increasing burial depth. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_744823 |
| institution | PANGAEA |
| language | en |
| publishDate | 1989 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Organic carbon concentrations in ODP Hole 105-645E ten Haven, H Lo Rullkötter, Jürgen 105-645E; AGE; Baffin Bay; Carbon, organic, total; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Epoch; Joides Resolution; Leg105; Lithologic unit/sequence; Ocean Drilling Program; ODP; Sample code/label The aliphatic hydrocarbon fractions of eight early Miocene to Pliocene sediment samples from Hole 645E (Baffin Bay; ODP Leg 105) were investigated by gas chromatography and gas chromatography/mass spectrometry. Long, straight-chain alkanes of terrigenous origin are often present as major compounds. Other terrigenous biological markers include three oleanenes with a double bond at positions 12, 13(18), or 18, and taraxer-14-ene. Urs-12-ene is identified tentatively. In the three deepest samples, 17a(H), 18a(H), and 210(H)-28, 30-bisnorhopane is the most abundant compound. Several new compounds were detected, some of which are tentatively identified. The identification and possible significance of 23-norlupane, three A/B-ring nuclear demethylated (or A-nor-) oleanenes, and an A/B-ring nuclear demethylated (or A-nor-) urs-12-ene are discussed. The authors postulate that taraxer-14-ene isomerizes to olean-12-ene with increasing burial depth. |
| title | Organic carbon concentrations in ODP Hole 105-645E |
| topic | 105-645E; AGE; Baffin Bay; Carbon, organic, total; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Epoch; Joides Resolution; Leg105; Lithologic unit/sequence; Ocean Drilling Program; ODP; Sample code/label |
| url | https://doi.org/10.1594/PANGAEA.744823 |