(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

Type Dataset Class type 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.

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Cite as

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

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Metadata
Data schema

Field	Value
Dataset Identifier (DOI)	10.1594/pangaea.858994
Other Identifier	OthId Identifier: ingv_799 OthId Organization: INGV
Dataset Themes	TECH
Publisher	PANGAEA - Data Publisher for Earth & Environmental Science
Release Date	01-01-2009
Modification Date	05-07-2022
Geographical Name	Organizational Unit Responsible Competence Area
GeoNames URL	Not available
Dataset Languages	ITA
Temporal Coverage	Not available
Rights holders	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
Update frequency	never
Version Of	Not available
Spatial extent	{"type": "MultiPoint","coordinates": [[165.277,-77.7581]]}
Authors	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

ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

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Data schema