(Table T1) Biostratigraphy and distribution of Quaternary and Miocene calcareous nannofossils in ODP Site 188-1165 ...

• Main Author: Pospichal, James J
• Format: Dataset
• Language: English
• Published: PANGAEA 2003
• Subjects: Event label; Sample code/label; DEPTH, sediment/rock; Nannofossil zone; Epoch; Nannofossils; Nannofossils preservation; Species richness; Calcidiscus leptoporus; Coccolithus pelagicus; Emiliania huxleyi; Gephyrocapsa aperta; Gephyrocapsa caribbeanica; Gephyrocapsa oceanica; Gephyrocapsa ericsonii; Gephyrocapsa parallela; Gephyrocapsa spp.; Helicosphaera carteri; Umbilicosphaera sibogae var. foliosa; Pseudoemiliania ovata; Pseudoemiliania lacunosa; Reticulofenestra asanoi; Reticulofenestra perplexa; Reticulofenestra producta; Reticulofenestra pseudoumbilicus; Reticulofenestra gelida; Reticulofenestra minutula; Reticulofenestra spp.; Reticulofenestra haqii; Reticulofenestra minuta; Placoliths, small; Syracosphaera spp.; Umbilicosphaera spp.; Umbilicosphaera cricota; Pontosphaera spp.; Discoaster spp.; Discoaster cf. variabilis; Minylitha convallis; Reticulofenestra rotaria; Sphenolithus abies; Cyclicargolithus floridanus; Reticulofenestra hesslandii; Reticulofenestra daviesii; Coronocyclus nitescens; Reticulofenestra cf. perplexa; Coccolithus spp.; Pontosphaera multipora; Sphenolithus spp.; Coccolithus pelagicus ssp. floralis; Cyclicargolithus cf. floridanus; Antarc*; Antarctic; Antarctica; Prydz Bay
• Online Access: https://dx.doi.org/10.1594/pangaea.780564; https://doi.pangaea.de/10.1594/PANGAEA.780564

During Ocean Drilling Program (ODP) Leg 188, piston and rotary cores were recovered at three southern Indian Ocean sites on the continental margin in Prydz Bay, Antarctica, in order to obtain a detailed sedimentary record reflecting Cenozoic Antarctic glacial history and paleoenvironments. Coring at continental rise Site 1165 revealed a relatively continuous, ~1000-m, lower Miocene to upper Pliocene section overlain by a thin Quaternary cover. No nannofossils were noted at shelf Site 1166, where a discontinuous, ~343-m section of Quaternary- to Late Cretaceous-age predominantly glacial marine diamictons was recovered. At slope Site 1167, ~447 m of clayey silty sands was recovered, where nannofossils are rare and sporadic but indicate Pleistocene age for at least the upper ~227 m there.This report focuses on data collected from Site 1165, where Neogene-Quaternary calcareous nannofossils are moderately to well preserved and sporadically present, but abundant in several intervals. Assemblages are characterized ... : Sediment depth is given in mbsf. Abundance values represent the average number of specimens per ~200 fields of view at 1000x. All slides were examined a minimum of 800 fields of view. Warm intervals: sample 188-1165B-14H-CC,34-44 and samples 188-1165C-18R-3,47-48 to 188-1165C-18R-4,51-52. Barren samples: 188-1165B-2H-7 to 188-1165B-14H-6, 188-1165B-16H-4 to 188-1165B-20H-4, 188-1165B-22X-2 to 188-1165B-24X-3, 188-1165B-28X-1 to 188-1165B-57X, 188-1165B-69X to 188-1165B-73X, 188-1165C-10R to 188-1165C-11R-4, 188-1165C-16R, 188-1165C-20R, 188-1165C-23R-1 to 188-1165C-26R-1 and 188-1165C-34R. ...