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| Main Authors: | , |
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| Format: | Dataset Open Access |
| Language: | en |
| Published: |
PANGAEA
2008
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| Subjects: | |
| Online Access: | https://doi.org/10.1594/PANGAEA.690523 |
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| _version_ | 1867167659750064128 |
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| author | Boucsein, Bettina Stein, Ruediger |
| author_facet | Boucsein, Bettina Stein, Ruediger |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The study of particulate organic matter (OM) in Arctic Ocean sediments from the Late Cretaceous to the Eocene (IODP Expedition 302) has revealed detailed information about the aquatic/marine OM fluxes, biological sources, preservation and export of terrestrial material. Here, we present detailed data from maceral analysis, vitrinite reflectance measurements and organic geochemistry. During the Campanian/Paleocene, fluxes of land-derived OM are indicated by reworked and oxidized macerals (vitrinite, inertinite) and terrigenous liptinite (cutinite, sporinite). In the Early Eocene, drastic environmental changes are indicated by peaks in aquatic OM (up to 40-45%, lamalginite, telalginite, liptodetrinite, dinoflagellate cysts) and amorphous OM (up to 50% bituminite). These events of increased aquatic OM flux, similar to conditions favoring black shale deposition, correlate with the global d13C events "Paleocene/Eocene Thermal Maximum" (PETM) and "Elmo-event". Freshwater discharge and proximity of the source area are documented by freshwater algae material (Pediastrum, Botryococcus) and immature land-plant material (corphuminite, textinite). We consider that erosion of coal-bearing sediments during transgression time lead to humic acids release as a source for bituminite deposited in the Early Eocene black shales. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_690523 |
| institution | PANGAEA |
| language | en |
| publishDate | 2008 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Macerals in sediments Boucsein, Bettina Stein, Ruediger 302-M0004A; ACEX-M4A; Amundsen Basin; Arctic Coring Expedition, ACEX; Arctic Ocean; ARK-VIII/3; AWI_Paleo; CCGS Captain Molly Kool (Vidar Viking); Exp302; Giant box corer; GKG; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Lomonosov Ridge, Arctic Ocean; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS19/175; PS19/186; PS19/189; PS19/190; PS19/194; PS19 ARCTIC91; PS2177-1; PS2185-3; PS2186-5; PS2187-1; PS2190-3 The study of particulate organic matter (OM) in Arctic Ocean sediments from the Late Cretaceous to the Eocene (IODP Expedition 302) has revealed detailed information about the aquatic/marine OM fluxes, biological sources, preservation and export of terrestrial material. Here, we present detailed data from maceral analysis, vitrinite reflectance measurements and organic geochemistry. During the Campanian/Paleocene, fluxes of land-derived OM are indicated by reworked and oxidized macerals (vitrinite, inertinite) and terrigenous liptinite (cutinite, sporinite). In the Early Eocene, drastic environmental changes are indicated by peaks in aquatic OM (up to 40-45%, lamalginite, telalginite, liptodetrinite, dinoflagellate cysts) and amorphous OM (up to 50% bituminite). These events of increased aquatic OM flux, similar to conditions favoring black shale deposition, correlate with the global d13C events "Paleocene/Eocene Thermal Maximum" (PETM) and "Elmo-event". Freshwater discharge and proximity of the source area are documented by freshwater algae material (Pediastrum, Botryococcus) and immature land-plant material (corphuminite, textinite). We consider that erosion of coal-bearing sediments during transgression time lead to humic acids release as a source for bituminite deposited in the Early Eocene black shales. |
| title | Macerals in sediments |
| topic | 302-M0004A; ACEX-M4A; Amundsen Basin; Arctic Coring Expedition, ACEX; Arctic Ocean; ARK-VIII/3; AWI_Paleo; CCGS Captain Molly Kool (Vidar Viking); Exp302; Giant box corer; GKG; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Lomonosov Ridge, Arctic Ocean; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS19/175; PS19/186; PS19/189; PS19/190; PS19/194; PS19 ARCTIC91; PS2177-1; PS2185-3; PS2186-5; PS2187-1; PS2190-3 |
| url | https://doi.org/10.1594/PANGAEA.690523 |