Calcareous nannofossil stratigraphy, nannofossil events and carbon isotopic ratios of ODP Leg 183 sites


Autoria(s): Arney, James; Wise, Sherwood W
Cobertura

MEDIAN LATITUDE: -56.613760 * MEDIAN LONGITUDE: 80.264530 * SOUTH-BOUND LATITUDE: -59.699910 * WEST-BOUND LONGITUDE: 75.974880 * NORTH-BOUND LATITUDE: -53.551750 * EAST-BOUND LONGITUDE: 84.834830 * DATE/TIME START: 1998-12-23T11:45:00 * DATE/TIME END: 1999-01-31T06:15:00

Data(s)

28/06/2003

Resumo

Cores from Sites 1135, 1136, and 1138 of Ocean Drilling Program Leg 183 to the Kerguelen Plateau (KP) provide the most complete Paleocene and Eocene sections yet recovered from the southern Indian Ocean. These nannofossil-foraminifer oozes and chalks provide an opportunity to study southern high-latitude biostratigraphic and paleoceanographic events, which is the primary subject of this paper. In addition, a stable isotope profile was established across the Cretaceous/Tertiary (K/T) boundary at Site 1138. An apparently complete K/T boundary was recovered at Site 1138 in terms of assemblage succession, isotopic signature, and reworking of older (Cretaceous) nannofossil taxa. There is a significant color change, a negative carbon isotope shift, and nannofossil turnover. The placement of the boundary based on these criteria, however, is not in agreement with the available shipboard paleomagnetic stratigraphy. We await shore-based paleomagnetic study to confirm or deny those preliminary results. The Paleocene nannofossil assemblage is, in general, characteristic of the high latitudes with abundant Chiasmolithus, Prinsius, and Toweius. Placed in context with other Southern Ocean sites, the biogeography of Hornibrookina indicates the presence of some type of water mass boundary over the KP during the earliest Paleocene. This boundary disappeared by the late Paleocene, however, when there was an influx of warm-water discoasters, sphenoliths, and fasciculiths. This not only indicates that during much of the late Paleocene water temperatures were relatively equable, but preliminary floral and stable isotope analyses also indicate that a relatively complete record of the late Paleocene Thermal Maximum event was recovered at Site 1135. It was only at the beginning of the middle Eocene that water temperatures began to decline and the nannofossil assemblage became dominated by cool-water species while discoaster and sphenolith abundances and diversity were dramatically reduced. One new taxonomic combination is proposed, Heliolithus robustus Arney, Ladner, and Wise.

Formato

application/zip, 8 datasets

Identificador

https://doi.pangaea.de/10.1594/PANGAEA.785243

doi:10.1594/PANGAEA.785243

Idioma(s)

en

Publicador

PANGAEA

Direitos

CC-BY: Creative Commons Attribution 3.0 Unported

Access constraints: unrestricted

Fonte

Supplement to: Arney, James; Wise, Sherwood W (2003): Paleocene-Eocene nannofossil biostratigraphy of ODP Leg 183, Kerguelen Plateau. In: Frey, FA; Coffin, MF; Wallace, PJ; Quilty, PG (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 183, 1-59, doi:10.2973/odp.proc.sr.183.014.2003

Palavras-Chave ##1 = questionable; 183-1135A; 183-1136A; 183-1138A; 5 ray; 6 ray; A. cymbiformis; A. octoradiata; A. scotus; A. sigmundii; A = abundant; Abundance estimate; Acuturris scotus; after Wei and Pospichal (1991, doi:10.2973/odp.proc.sr.119.154.1991); Age model; Ageprof dat des; Ageprofile Datum Description; Ahmuellerella octoradiata; also after Wei and Pospichal (1991, doi:10.2973/odp.proc.sr.119.154.1991); Amithalithina sigmundii; Arkhangelskiella cymbiformis; B. bigelowii; B. constans; B. dissimilis; B. sparsus; B. spinosus; Biantholithus sparsus; Biscutum constans; Biscutum dissimilis; Biscutum spp.; Blackites spinosus; bottom; Braarudosphaera bigelowii; C. alta; C. amphipons; C. bidens; C. calathus; C. californicus; C. consuetus; C. cribellum; C. daniae; C. danicus; C. edwardsii; C. ehrenbergii; C. eograndis; C. expansus; C. fenestratus; C. floridanus; C. formosus; C. frequens; C. garrisonii; C. gigas; C. grandis; C. luminis; C. nitescens; C. oamaruensis; C. pelagicus; C. primus; C. prionion; C. reinhardtii; C. solitus; C. subpertusus; C. tenuis; C. titus; Calcidiscus fenestratus; Chiasmolithus bidens; Chiasmolithus californicus; Chiasmolithus consuetus; Chiasmolithus danicus; Chiasmolithus eograndis; Chiasmolithus expansus; Chiasmolithus gigas; Chiasmolithus grandis; Chiasmolithus oamaruensis; Chiasmolithus solitus; Chiasmolithus spp.; Chiasmolithus titus; Chiastozygus amphipons; Chiastozygus garrisonii; Chiastozygus sp.; Chiphragmalithus calathus; Chiphragmalithus spp.; Coccolithus formosus; Coccolithus pelagicus; Coccolithus spp.; Coccolithus subpertusus; Coronocyclus nitescens; Coronocyclus prionion; Cretaceous; Cribrocentrum daniae; Cribrosphaerella ehrenbergii; Cruciplacolithus cribellum; Cruciplacolithus edwardsii; Cruciplacolithus frequens; Cruciplacolithus primus; Cruciplacolithus sp.; Cruciplacolithus spp.; Cruciplacolithus tenuis; Cyclagelosphaera alta; Cyclagelosphaera reinhardtii; Cyclicargolithus floridanus; Cyclicargolithus luminis; D. barbadiensis; D. bifax; D. binodosus; D. cruciformis; D. deflandrei; D. diastypus; D. kuepperi; D. lenticularis; D. lodoensis; D. megastypus; D. mohleri; D. multiradiatus; D. nobilis; D. nonaradiatus; D. praebifax; D. robustus; D. saipanensis; D. sublodoensis; D. tanii; D. tanii nodifer; D. wemmelensis; d13C carb; delta 13C, carbonate; Depth; DEPTH, sediment/rock; Discoaster barbadiensis; Discoaster bifax; Discoaster binodosus; Discoaster cruciformis; Discoaster deflandrei; Discoaster diastypus; Discoaster kuepperi; Discoaster lenticularis; Discoaster lodoensis; Discoaster megastypus; Discoaster mohleri; Discoaster multiradiatus; Discoaster nobilis; Discoaster nonaradiatus; Discoaster praebifax; Discoaster robustus; Discoaster saipanensis; Discoaster spp.; Discoaster sublodoensis; Discoaster tanii; Discoaster tanii nodifer; Discoaster wemmelensis; DRILL; Drilling/drill rig; E. distichus; E. lajollaensis; E. macellus; E. turriseiffelii; Eiffellithus sp.; Eiffellithus turriseiffelii; Ellipsolithus distichus; Ellipsolithus lajollaensis; Ellipsolithus macellus; Ellipsolithus spp.; Epoch; F. bobii; F. clinatus; F. hayi; F. involutus; F. janii; F. lillianae; F. magnicordis; F. magnus; F. thomasii; F. tympaniformis; F. ulii; Fasciculithus bobii; Fasciculithus clinatus; Fasciculithus hayi; Fasciculithus involutus; Fasciculithus janii; Fasciculithus lillianae; Fasciculithus magnicordis; Fasciculithus magnus; Fasciculithus spp.; Fasciculithus thomasii; Fasciculithus tympaniformis; Fasciculithus ulii; FO = first occurrence, FCO = first common occurrence, LO = last occurrence; FO = first occurrence, LO = last occurrence; G. gammation; G = good, M = moderate, P = poor; Gartnerago sp.; genus questionable; Girgisia gammation; H. cantabriae; H. edwardsii; H. kleinpellii; H. robustus; H. seminulum; H. teuriensis; H. universus; Helicosphaera seminulum; Helicosphaera spp.; Heliolithus cantabriae; Heliolithus kleinpellii; Heliolithus robustus; Heliolithus sp.; Heliolithus universus; Hornibrookina edwardsii; Hornibrookina sp.; Hornibrookina spp.; Hornibrookina teuriensis; I. recurvus; Indian Ocean; Isthmolithus recurvus; Joides Resolution; K. magnificus; Kamptnerius magnificus; L. acutus; L. cayeuxii; Label; Label 2; Lapideacassis sp.; Leg183; Lophodolithus acutus; Lucianorhabdus cayeuxii; M. apertus; M. astroporus; M. decoratus; M. decussata; M. inversus; M. pleniporus; M. quaternarius; M = moderate; Markalius apertus; Markalius astroporus; Markalius inversus; mbsf; Microrhabdulus decoratus; Micula decussata; Misceomarginatus pleniporus; Monomarginatus quaternarius; N. chiastus; N. cohenii; N. concinnus; N. cruciatus; N. digitosus; N. distentus; N. dubius; N. fossus; N. frequens; N. fulgens; N. junctus; N. miniporus; N. minutus; N. modestus; N. neocrassus; N. pediculatus; N. perfectus; N. saepes; Nannofossil abundance; Nannofossils preservation; Nannofossil zone; Nannofossil Zone; Okada & Bukry, 1980; Nannos abund; Nannos preserv; Nannos zone; Nannotetrina fulgens; Neochiastozygus chiastus; Neochiastozygus concinnus; Neochiastozygus digitosus; Neochiastozygus distentus; Neochiastozygus junctus; Neochiastozygus modestus; Neochiastozygus perfectus; Neochiastozygus saepes; Neochiastozygus spp.; Neococcolithes dubius; Neococcolithes minutus; Neococcolithes pediculatus; Neococcolithes spp.; Neocrepidolithus cohenii; Neocrepidolithus cruciatus; Neocrepidolithus fossus; Neocrepidolithus neocrassus; Neocrepidolithus spp.; Nephrolithus frequens; Nephrolithus miniporus; Nephrolithus sp.; Ocean Drilling Program; ODP; ODP sample designation; P. bisulcus; P. cretacea; P. dimorphosus; P. inversus; P. martinii; P. sigmoides; P. spinosa; P. stoveri; Placozygus sigmoides; Pontosphaera sp.; Pontosphaera spp.; Prediscosphaera cretacea; Prediscosphaera spinosa; Prediscosphaera spp.; Prediscosphaera stoveri; Prinsius bisulcus; Prinsius dimorphosus; Prinsius martinii; Prinsius spp.; Pseudotriquetrorhabdulus inversus; R. anthophorus; R. bisecta; R. crenulata; R. daviesii; R. oamaruensis; R. onusta; R. samodurovii; R. umbilicus; Reinhardtites anthophorus; Retacapsa crenulata; Reticulofenestra bisecta; Reticulofenestra daviesii; Reticulofenestra oamaruensis; Reticulofenestra onusta; Reticulofenestra samodurovii; Reticulofenestra spp.; Reticulofenestra umbilicus; Rew; Reworked; S. akropodus; S. anarrhopus; S. editus; S. moriformis; S. primus; S. radians; S. spiniger; Sample code/label; Sample code/label 2; small <4 µm; Sphenolithus akropodus; Sphenolithus anarrhopus; Sphenolithus editus; Sphenolithus moriformis; Sphenolithus primus; Sphenolithus radians; Sphenolithus spiniger; Sphenolithus spp.; T. bramlettei; T. callosus; T. contortus; T. crassus; T. craticulus; T. eminens; T. magnicrassus; T. operculata; T. orthostylus; T. pertusus; T. tovae; Thoracosphaera operculata; Thoracosphaera sp.; Thoracosphaera spp.; top; Toweius callosus; Toweius crassus; Toweius craticulus; Toweius eminens; Toweius magnicrassus; Toweius pertusus; Toweius spp.; Toweius tovae; Transversopontis spp.; Tribrachiatus bramlettei; Tribrachiatus contortus; Tribrachiatus orthostylus; W. barnesae; Watznaueria barnesae; Z. adamas; Z. bijugatus; Z. compactus; Z. spiralis; Zygodiscus adamas; Zygodiscus compactus; Zygodiscus spiralis; Zygodiscus spp.; Zygrhablithus bijugatus
Tipo

Dataset