Stratigraphic calibration of Oligocene–Miocene organic-walled dinoflagellate cysts from offshore Wilkes Land, East Antarctica, and a zonation proposal
نویسندگان
چکیده
منابع مشابه
Differences in the chemical composition of organic-walled dinoflagellate resting cysts from phototrophic and heterotrophic dinoflagellates.
Dinoflagellates constitute a large proportion of the planktonic biomass from marine to freshwater environments. Some species produce a preservable organic-walled resting cyst (dinocyst) during the sexual phase of their life cycle that is an important link between the organisms, the environment in which their parent motile theca grew, and the sedimentary record. Despite their abundance and wides...
متن کاملDinoflagellate cysts from the Upper Triassic (Rhaetian) strata of the Tabas Block, East - Central Iran
Rhaetian strata from the Nayband Formation of the Tabas block, East- Central Iran, were studied palynologically. The materialexamined contained moderately diverse and well-preserved dinoflagellate cyst assemblages which lead to the identification ofRhaetogonyaulax rhaetica Zone. The assigned age of this dinozone (Rhaetian) is justified by plant fossils such as Equisetitesarenaceus, Scytophyllum...
متن کاملPan–ice-sheet glacier terminus change in East Antarctica reveals sensitivity of Wilkes Land to sea-ice changes
The dynamics of ocean-terminating outlet glaciers are an important component of ice-sheet mass balance. Using satellite imagery for the past 40 years, we compile an approximately decadal record of outlet-glacier terminus position change around the entire East Antarctic Ice Sheet (EAIS) marine margin. We find that most outlet glaciers retreated during the period 1974-1990, before switching to ad...
متن کاملdinoflagellate cysts from the upper triassic (rhaetian) strata of the tabas block, east - central iran
rhaetian strata from the nayband formation of the tabas block, east- central iran, were studied palynologically. the materialexamined contained moderately diverse and well-preserved dinoflagellate cyst assemblages which lead to the identification ofrhaetogonyaulax rhaetica zone. the assigned age of this dinozone (rhaetian) is justified by plant fossils such as equisetitesarenaceus, scytophyllum...
متن کاملThe semi-automated classification of sedimentary organic matter and dinoflagellate cysts in palynological preparations
Palynological material is the entire acid-resistant microscopic organic matter recovered from a sediment or sedimentary rock. This can be subdivided into three broad classes: palynomorphs (i.e., dinoflagellate cysts, spores, pollen, acritarchs, foraminiferal linings, fungal material and algae), palynodebris (i.e., membranous, brown and opaque material) and amorphous OM. The research articulated...
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ژورنال
عنوان ژورنال: Journal of Micropalaeontology
سال: 2018
ISSN: 2041-4978
DOI: 10.5194/jm-37-105-2018