Results 71 to 80 of about 2,615 (200)

Paleogene calcareous nannoplankton evolution: the fertility link

open access: yes, 1992
Calcareous nannoplankton diversity varied greatly during the Paleogene. From extremely reduced values (~10 species) in the early Paleocene (circa 66.4 to 66 Ma, age estimates from Berggren, Kent and Flynn, 1985) following the terminal Cretaceous ...
Marie-Pierre Aubry
core   +1 more source

ENVIRONMENTAL CONTROL OF NANNOPLANKTON AND FORAMINIFERA ASSEMBLAGES IN MADURA WATERS [PDF]

open access: yes, 2016
Nannoplankton is widely used for determining age of sediments following the other microorganism foraminifera since the late 1960s; and it was started being used for marine geography study in the year of 1984.
Isnaniawardhani, Vijaya
core   +1 more source

CALCAREOUS NANNOPLANKTON RESPONSE TO THE LATEST CENOMANIAN OCEANIC ANOXIC EVENT 2 PERTURBATION

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2017
Morphometric analyses were performed on Biscutum constans, Zeugrhabdotus erectus, Discorhabdus rotatorius and Watznaueria barnesiae specimens from five sections spanning the Cenomanian-Turonian boundary interval including Oceanic Anoxic Event (OAE) 2 ...
GIULIA FAUCHER   +3 more
doaj   +1 more source

Calcareous nannoplankton from the Southwest Pacific Ocean

open access: yes, 1986
The positions of all cores recovered during Leg 90 in the southwest Pacific are shown within the standard calcareous nannoplankton zonation. The stratigraphic and regional occurrences and preservation of Paleogene calcareous nannoplankton found at Sites ...
Erlend Martini (6886877)   +1 more
core   +1 more source

Calcareous nannoplankton and foraminiferal response to global Oligocene and Miocene climatic oscillations: a case study from the Western Carpathian segment of the Central Paratethys

open access: yesGeologica Carpathica, 2017
The reactions of foraminiferal and calcareous nannoplankton assemblages to global warming and cooling events in the time intervals of ca. 27 to 19 Ma and 13.5 to 15 Ma (Oligocene and Miocene) were studied in subtropical epicontinental seas influenced by ...
Holcová Katarína
doaj   +1 more source

Nannoplankton aus dem nördlichen Arabischen Meer

open access: yes, 1972
Recent nannoplankton from the "Meteor" -stations M 242, M 243 and M 245 in the northern Arabian Sea were studied by means of the light and electron microscope, and 19 species were found which are tabulated in text-figure 2.
Müller, Carla, Martini, Erlend
core  

Climatic and ecological changes during the Aptian traced by calcareous nannofossils and oxygen isotopes

open access: yes, 2013
The Lower Cretaceous was marked by the emplacement of large igneous provinces (LIPs) that formed gigantic oceanic plateaus, affecting ecosystems at global scale with biota forced to face excess CO2, climate and global perturbations in the ocean ...
D. Tiraboschi   +3 more
core   +2 more sources

Distribution of coccolithophores as a potential proxy in paleoceanography: The case of the Oman Sea monsoonal pattern

open access: yesGeologica Carpathica, 2015
High abundances of coccoliths have been observed in surface sediment samples from near the coasts of the Oman Sea in February 2011. At the end of the NE monsoon, the locally observed high Gephyrocapsa oceanica production is hypothesized to respond to ...
Mojtahedin Elham   +2 more
doaj   +1 more source

Calcareous Nannoplankton Fossils and their Stratigraphic Meaning

open access: yesJournal of Geography (Chigaku Zasshi), 1978
Modern calcareous nannoplanktons have an important role in marine food chain as a primary producelr. Fossils nannoplankton played an important part of the Mesozoic and Cenozoic biological world, and are now accepted as a very useful and accurate index fossil from the Jurassic to Recent Period.In this article recent advance of nannoplankton ...
openaire   +2 more sources

Nannoplankton and the Metals

open access: yes, 1972
Intertwined with the other pollution difficulties of the Coeur d'Alene and Spokane region is the problem of the metals and the nannoplankton. Metals, such as cadmium, lead, copper, and zinc, are coming down the South Fork to the main stem of the Coeur d ...
Flaherty, David C.
core  

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