Results 51 to 60 of about 73,101 (168)

Sedimentation environment of the Cojimar Formation (Havana province) based on benthic foraminifera

open access: yesMinería y Geología, 2022
Cojímar Formation, —Lower Miocene (upper part) to Middle Miocene (lower part)—, is a unit in Western Cuba well known for its extensive development and exposure outcrops. It has been widely used in bioestratigraphic studies.
Yaima Domínguez-Samalea   +2 more
doaj  

Cold-seep fossil macrofaunal assemblages from Vestnesa Ridge, eastern Fram Strait, during the past 45 000 years

open access: yesPolar Research, 2019
Four cores from 1200 m water depth from Vestnesa Ridge on the western Svalbard margin in the eastern Fram Strait were studied for their content of fossil macrofaunas.
Elsebeth Thomsen   +5 more
doaj   +1 more source

Foraminiferal morphogroups of the Early–Middle Cretaceous succession in northeastern Rafsanjan and their significance as palaeoenvironmental bioindicators [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches
Foraminiferal morphogroups reveal their responses to palaeoenvironmental and palaeoecological changes. The foraminiferal morphogroups of the early-mid Cretaceous in northeastern Rafsanjan have been investigated with an interest in palaeoenvironmental ...
Tayebeh Ahmadi
doaj   +1 more source

Stratigrafické a paleoekologické vyhodnotenie asociácie dierkavcov z vrtu HC-4 (Holíč, Viedenská panva) [PDF]

open access: yesGeologické práce. Správy, 2021
HC-4 well was drilled nearby the Holíč water reservoir well in 2020 by Aqua-Geo company to build a new water reservoir. This work aims to interpret foraminifera associations from the ditch cuttings of the Neogene (Sarmatian) sediments of the Holíč and ...
Natália Hudáčková   +5 more
doaj  

Remarks on the type locality and current status of the foraminiferal species Rzehakina epigona (Rzehak, 1895) [PDF]

open access: yes, 2001
A likely topotype locality is proposed for Rzehakina epigona. As the type specimen of Silicina epigona Rzehak, 1895 is assumed to be lost, we undertook a search for new material in the type area, Zdounky village in Moravia. A single locality provided a
Bubik, M., Kaminski, M.A.
core  

Paleocene orthophragminids from the Lakadong Limestone, Mawmluh Quarry section, Meghalaya (Shillong, NE India). Implications for the regional geology and paleobiogeography [PDF]

open access: yes, 2018
The late Paleocene orthophragminids, hitherto poorly known from the Himalayan foreland basins, are studied from the Lakadong Limestone in Meghalaya, northeastern India, in order to establish a systematic, biostratigraphic, and paleobiogeographical ...
Barattolo, Filippo   +6 more
core   +1 more source

Mn Incorporation in Large Benthic Foraminifera: Differences Between Species and the Impact of pCO2

open access: yesFrontiers in Earth Science, 2020
Element concentrations of calcite precipitated by foraminifera reflect chemical and physical properties of seawater and can therefore be used to reconstruct (paleo-)environmental conditions.
Inge van Dijk   +5 more
doaj   +1 more source

Testing the Influence of Changing Seawater Ca Concentration on Elements/Ca Ratios in Planktic Foraminifera: A Culture Experiment

open access: yesGeochemistry, Geophysics, Geosystems, 2021
Element/Ca ratios in foraminifera shells are used to assess oceanic physical‐chemical properties (e.g., paleo‐temperature, paleo‐pH…). On geological time scales, these proxies may also depend on changes in the chemical composition of seawater.
Sandrine Le Houedec   +2 more
doaj   +1 more source

Three hundred eighty thousand year long stable isotope and faunal records from the Red Sea : influence of global sea level change on hydrography [PDF]

open access: yes, 1996
Stable isotope and faunal records from the central Red Sea show high-amplitude oscillations for the past 380,000 years. Positive δ18O anomalies indicate periods of significant salt buildup during periods of lowered sea level when water mass exchange with
Ahuva Almogi-Labin   +53 more
core   +2 more sources

Environmental DNA sheds new insight on molecular adaptation of foraminifera to temperature from laboratory‐controlled culture experiment

open access: yesEcology and Evolution
Foraminifera is the most important temperature proxy of the ocean on long time scales. However, the absence of temperature‐controlled experiments at different water depths hinders the advancement of paleotemperature reconstruction with foraminifera from ...
Haotian Li   +4 more
doaj   +1 more source

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