Cenozoic terrestrial palynomorphs from the late Oligocene to early Miocene section of sediment core CRP-2/2A (Table 1) ...

• Main Authors: Askin, R A, Raine, J Ian
• Format: Dataset
• Language: English
• Published: PANGAEA 2000
• Subjects: Depth, top/min; Depth, bottom/max; Assamiapollenites incognitus; Cyperaceaepollis sp.; Cibotiidites sp.; Coptospora spp.; Cyathidites minor; Dacrycarpites sp.; Liliacidites variegatus; Marchantiaceae; Microalatidites paleogenicus; Microalatidites sp.; Microcachrydites antarcticus; Nothofagidites asperus; Nothofagidites flemingii; Nothofagidites cf. flemingii; Nothofagidites lachlaniae; Nothofagidites matauraensis; Nothofagidites spp.; Osmundacidites wellmanii; Phormium sp.; Phyllocladidites mawsonii; Podosporites erugatus; Podocarpidites cf. exiguus; Podocarpidites ellipticus; Podocarpidites cf. torquatus; Podocarpidites sp.; Podocarpidites spp.; Ranunculaceae; Ricciaesporites sp.; Stereisporites antiquasporites; Stylidiaceae; Trichotomosulcites subgranulatus; Tricolpites sp.; Spores, pteridophyte indeterminata; Pollen, angiosperm indeterminata; Microthyriaceae Fungi; Core wireline system; Counting, palynology; CRP-2; Sampling/drilling from ice; Cape Roberts Project CRP; Antarc*; Antarctica; antarcticus; antartic*; Tundra; Victoria Land
• Online Access: https://dx.doi.org/10.1594/pangaea.143860; https://doi.pangaea.de/10.1594/PANGAEA.143860

Sparse terrestrial palynomorphs (spores and pollen) were recovered from glacigene Lower Miocene and Oligocene core samples from the Cape Roberts Project (CRP) drillhole CRP-2/2A, Victoria Land Basin, Antarctica. Rarity of palynomorphs probably results from the spares periglacial vegetation in the surrounding landscape at the time of deposition, as well as dilution from rapid sediment accumulation. The Miocene and Late Oligocene vegetation is interpreted as including herb-moss tundra with low-growing woody plants (including Nothofagus and podocarp conifers) in more protected areas, similar to that encountered in the Miocene of CRP-1. Species richness and numbers of specimens increase downhole, a trend that begins very gradually below ~307 mbsf, and increases below ~443 mbsf through the Early Oligocene. These lower assemblages reflect low diversity woody vegetation dominated by several species of Nofhofagus and podocarps, growing in somewhat milder conditions, though still cold temperate to periglacial in the ... : Supplement to: Askin, R A; Raine, J Ian (2000): Oligocene and early Miocene terrestrial palynology of the Cape Roberts drillhole CRP-2/2A, Victoria Land Basin, Antarctica. Terra Antartica, 7(4), 493-501 ...