(Table 1) Upper Carboniferous spores abundances from ODP Holes 172-1062B, 172-1063A and 172-1063B ...

• Main Authors: Giosan, Liviu, Flood, Roger D, Gruetzner, Jens, Mudie, Peta J
• Format: Dataset
• Language: English
• Published: PANGAEA 2002
• Subjects: Event label; Sample code/label; Color description; Age, minimum/young; Age, maximum/old; Lycospora; Punctatisporites; Triquitrites; Lophotriletes; Murospora; Verrucosisporites; Converrucosisporites; Leiotriletes; Laevigatosporites; Florinites; Densosporites; Apiculatisporis; Spores indeterminata; Total counts; Drilling/drill rig; DSDP/ODP/IODP sample designation; Smear slide analysis; Counting, palynology; Leg172; Joides Resolution; Ocean Drilling Program ODP; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.764310; https://doi.pangaea.de/10.1594/PANGAEA.764310

Color variations were interpreted in paleoceanographic terms for the late Pliocene-Pleistocene sediments recovered by ODP Leg 172 on deep-sea drifts at Blake-Bahama Outer Ridge and northeastern Bermuda Rise. The color-derived parameters used in interpretation included predicted carbonate content, terrigenous fluxes, and hematite content. Abundance of Upper Carboniferous spores indicates that the hematite is probably derived from the Permo-Carboniferous red beds of the Canadian Maritimes. In the last 800 kyr sedimentation pattern changes on the Blake-Bahama Outer Ridge were determined by the sediment delivery to the deep basin as well as circulation changes. Sediment delivery increased during glacials (especially during the last 500 kyr and particularly since Stage 6). A fundamental change in the thermohaline circulation occurred at about 500 ka corresponding to the end of the Mid-Pleistocene Transition period at the onset of the predominant 100-kyr climate cyclicity. Sedimentation related to WBUC had ... : Supplement to: Giosan, Liviu; Flood, Roger D; Gruetzner, Jens; Mudie, Peta J (2002): Paleoceanographic significance of sediment color on western North Atlantic Drifts: II. Late Pliocene-Pleistocene sedimentation. Marine Geology, 189(1-2), 43-61 ...