Where: Antarctica (63.3° S, 136.0° E: paleocoordinates 63.9° S, 132.7° E)
• coordinate stated in text
When: Early/Lower Eocene (55.8 - 48.6 Ma)
• The lowermost 110 meters of sediments recovered at IODP Site U1356 (895.5 to 1000.08 meters below sea floor [mbsf], lithostratigraphic Units X and XI) are dated as Early to Middle Eocene in age based on the integration of dinoflagellate cyst (dinocyst) biostratigraphy and magnetostratigraphy (Expedition 318 Scientists. Site U1356. in Escutia, C., Brinkhuis, H., Klaus, A., and the Expedition 318 Scientists. Proc. IODP 318 (2011)).
Environment/lithology: shallow subtidal; bioturbated, green, silty claystone and sandstone
• Based on information from dinocyst assemblages, sediments of Units X and XI were deposited in mid-shelfal settings (Expedition 318 Scientists. Site U1356. in Escutia, C., Brinkhuis, H., Klaus, A., and the Expedition 318 Scientists. Proc. IODP 318 (2011)).
• Unit XI (Cores -101R to -106R; 948.8 to 1000.08 mbsf) consists predominantly of dark green, bioturbated claystone that is faintly stratified (millimetre- to meter-scale) as defined by colour variations (light to dark bands), and subordinate laminated siltstone and sandstone interbeds.
Size class: microfossils
Preservation: original sporopollenin
Collected by IODP
Collection methods: core, chemical, hydrochloric, hydroflouric,
• This research used samples and data provided by the Integrated Ocean Drilling Program (IODP).
•
•A total of 145 palynological samples, taken from the Eocene interval of Site U1356 at a resolution of 20-30 cm, were processed using identical protocols at the Institute of Geosciences of Goethe University Frankfurt and the Laboratory of Palaeobotany and Palynology of Utrecht University.
Primary reference: J. Pross, L. Contreras, P. K. Bijl, D. R. Greenwood, S. M. Bohaty, S. Schouten, J. A. Bendle, U. Röhl, L. Tauxe, J. I. Raine, C. E. Huck, T. Flierdt, S. S. R. Jamieson, C. E. Stickley, B. Schootbrugge, C. Escutia, H. Brinkhuis and Integrated Ocean Drilling Program. 2012. Persistent near-tropical warmth on the Antarctic continent during the early Eocene epoch. Nature (488)73-77 [C. Jaramillo/C. Jaramillo/M. Uhen]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 169274: authorized by Carlos Jaramillo, entered by Carlos Jaramillo on 14.05.2015
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
unclassified |
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Polypodiopsida |
- Osmundaceae |
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Polypodiales - Polypodiidae |
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- Polypodiaceae |
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Pteridopsida |
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Marchantiopsida |
- Marchantiidae |
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Bryopsida |
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Retitriporites |
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Lycopodiopsida |
Selaginellales - |
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Equisetopsida |
Pinidae - Pinidae |
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Psilamonocolpites |
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Psilabrevitricolporites |
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Retitricolpites |
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Psilatricolpites |
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Retistephanoporites |
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Magnoliopsida |
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Angiospermae |
Fagales - |
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Fagales - Myricaceae |
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Fabales - Fabaceae |
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Malvales - Bombacaceae |
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Malvales - Tiliaceae |
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Dicotyledoneae |
Ericales - Ericaceae |
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Myrtales - |
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Angiospermae |
Gunnerales - |
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Proteales - |
Peninsulapollis sp. Dettmann and Jarzen 1988
Peninsulapollis sp./Tricolpites sp.4 (Truswell, 1983)
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Proteales - Proteaceae |
Proteacidites "constrictus", Proteacidites annularis, Proteacidites cf. adenanthoides, Proteacidites cf. callosus, Proteacidites cf. crassus, Proteacidites cf. incurvatus, Proteacidites cf. ornatus, Proteacidites cf. tuberculatus, Proteacidites reticuloscabratus, Proteacidites similis, Proteacidites sp., Proteacidites "sp. 2", Proteacidites "sp. 3", Proteacidites "sp. 4", Proteacidites cf. amolosexinus, Proteacidites symphyonemoides, Proteacidites cf. subscabratus, Proteacidites parvus, Triporopollenites sp., Triporopollenites "sp. 1", Beaupreaidites sp.
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Mesangiosperms - Arecaceae |
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Coniferales - Podocarpaceae |
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Psilatriporites |
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Alisporites |
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Retistephanocolporites |
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