(Supplement) Concentration in palynomorphs per gram of dry sediment in ANDRILL core AND-2A, supplement to: Warny, Sophie; Askin, R A; Hannah, Mike J; Mohr, Barbara A R; Raine, J Ian; Harwood, David M; Florindo, Fabio (2009): Palynomorphs from a sediment core reveal a sudden remarkably warm Antarctica during the middle Miocene. Geology, 37(10), 955-958

Tipo Dataset Classe Dati Geologici (terrestri e marini)

Core Depth, Sediment/rock Palynomorpha Nothofagidites Spp. Podocarpidites Sp. Palynomorpha, Terrestrial Algae, Freshwater Pyxidinopsis Braboi Operculodinium Centrocarpum Drilling/drill Rig Sms Mcmurdo Station Priority Programme 1158 Antarctic Research With Comparable Investigations In Arctic Sea Ice Areas (spp1158)


An exceptional triple palynological signal (unusually high abundance of marine, freshwater, and terrestrial palynomorphs) recovered from a core collected during the 2007 ANDRILL (Antarctic geologic drilling program) campaign in the Ross Sea, Antarctica, provides constraints for the Middle Miocene Climatic Optimum. Compared to elsewhere in the core, this signal comprises a 2000-fold increase in two species of dinoflagellate cysts, a synchronous five-fold increase in freshwater algae, and up to an 80-fold increase in terrestrial pollen, including a proliferation of woody plants. Together, these shifts in the palynological assemblages ca. 15.7 Ma ago represent a relatively short period of time during which Antarctica became abruptly much warmer. Land temperatures reached 10 °C (January mean), estimated annual sea-surface temperatures ranged from 0 to 11.5 °C, and increased freshwater input lowered the salinity during a short period of sea-ice reduction.

Data e Risorse

Questo dataset non ha dati

Citare come

Warny S., Askin R. A., Hannah M. J., Mohr B. A. R., Raine J. I., Harwood D. M., Florindo F. (2009). (Supplement) Concentration in palynomorphs per gram of dry sediment in ANDRILL core AND-2A, supplement to: Warny, Sophie; Askin, R A; Hannah, Mike J; Mohr, Barbara A R; Raine, J Ian; Harwood, David M; Florindo, Fabio (2009): Palynomorphs from a sediment core reveal a sudden remarkably warm Antarctica during the middle Miocene. Geology, 37(10), 955-958 [Data set]. PANGAEA - Data Publisher for Earth & Environmental Science. https://doi.org/10.1594/pangaea.858994

Formati di codifica dei dati disponibili tab

Nome campo Valore
Identificativo del dataset (DOI) 10.1594/pangaea.858994
Altro identificativo Codice: ingv_799
Gestore del codice: INGV
Temi del dataset Scienza e tecnologia
Editore del Dataset PANGAEA - Data Publisher for Earth & Environmental Science
Data di rilascio 01-01-2009
Data di modifica 05-07-2022
Copertura Geografica Area di competenza dell'unità organizzativa preposta
URI di GeoNames Non disponibile
Lingue del dataset italiano
Estensione temporale Non disponibile
Titolari Louisiana State University (LSU)
ROR 05ect4e57
Victoria University of Wellington
ROR 0040r6f76
Museum für Naturkunde – Leibniz Institute for Evolution and Biodiversity Science
ROR 052d1a351
GNS Science
ROR 03vaqfv64
University of Nebraska-Lincoln (UNL)
ROR 043mer456
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
ROR 00qps9a02
IPA ingv
Frequenza di aggiornamento mai
Versione di Non disponibile
Spatial extent {"type": "MultiPoint","coordinates": [[165.277,-77.7581]]}
Autori WARNY Sophie
Louisiana State University (LSU), United States of America
ASKIN Rosemary A.
Louisiana State University (LSU), United States of America
HANNAH Mike J
Victoria University of Wellington, New Zealand
MOHR Barbara A. R.
Museum für Naturkunde – Leibniz Institute for Evolution and Biodiversity Science, Germany
RAINE James Ian
GNS Science, New Zealand
HARWOOD David M
University of Nebraska-Lincoln (UNL), United States of America
FLORINDO Fabio
Istituto Nazionale di Geofisica e Vulcanologia (INGV), Italy