Results 101 to 110 of about 1,486 (212)

Calcareous nannoplankton response to surface-water acidification around oceanic anoxic event 1a

open access: yes, 2010
Ocean acidification induced by atmospheric CO2 may be a major threat to marine ecosystems, particularly to calcareous nannoplankton. We show that, during the Aptian (∼120 million years ago) Oceanic Anoxic Event 1a, which resulted from a massive addition ...
H. J. Weissert   +3 more
core   +1 more source

From shelf to abyss: Record of the Paleocene/Eocene-boundary in the Eastern Alps (Austria)

open access: yesGeologica Acta, 2009
In the Eastern Alps (Austria) several marine successions, which were deposited ranging from shallow shelf to bathyal slope and abyssal basin, provide detailed records across the Paleocene/Eocene-boundary.
H. EGGER   +2 more
doaj  

Tertiary and Quaternary calcareous nannoplankton biostratigraphy of ODP Leg 112 holes

open access: yes, 1990
Positions of all cores recovered during Ocean Drilling Program (ODP) Leg 112 off Peru are shown in the standard calcareous nannoplankton zonation. Stratigraphic and regional occurrences and preservation of calcareous nannoplankton are discussed for all ...
Erlend Martini (6886877)   +1 more
core   +1 more source

Calcareous nannofossil paleofluxes as proxy of pCO2 fluctuations during the Early Cretaceous

open access: yes, 2010
Calcareous nannoplankton is an excellent proxy for detecting present and paste surface water conditions, being extremely sensitive to changes in temperature, fertility, salinity and chemical conditions of the oceans.
D. Tiraboschi, E. Erba, C. Bottini
core  

Validation of Pedinocyclus and Quinquerhabdus, New Calcareous Nannoplankton Genera

open access: yes, 2017
Validation of the names of these two calcareous nannoplankton genera is necessary because generic diagnosis was not given in Bukry and Bramlette (1969) and because a proposed new genus name, Leptodiscus, has been determined to be preoccupied by a ...
Bukry, David, Bramlette, M. N.
core  

The revision of taxonomic composition of Cretaceous calcareous nannoplankton of Southern Ukraine

open access: yes, 2016
Ревизия систематического состава остатков известкового нанопланктона проведена по результатам изучения собственных сборов из меловой системы юга Украины, а также коллекций предыдущих исследователей.
Матвеев, А.В.
core   +1 more source

Middle Tertiary Calcareous Nannoplankton of the Cipero Section, Trinidad, W. I.

open access: yes, 2017
The middle Tertiary calcareous nannoplankton in the Cipero section of Trinidad are described, and their distribution in the samples from the foraminiferal zones of Bolli shown. From these data a zonation based on the calcareous nannoplankton is indicated.
Bramlette, M. N., Wilcoxon, J. A.
core  

THE DEMISE OF THE MESSINIAN SALINITY CRISIS AND THE BEGINNING OF THE ZANCLEAN IN THE NORTHERN MEDITERRANEAN BASIN: INSIGHT FROM HIGH-RESOLUTION BIOMAGNETOSTRATIGRAPHY (POLLENZO SECTION, NW ITALY)

open access: yesRivista Italiana di Paleontologia e Stratigrafia
The Messinian-Zanclean boundary in the Mediterranean basin marks the end of the Messinian salinity crisis (MSC) at approximately 5.33 Ma. The mechanism behind the return to normal marine conditions after the MSC are debated, with two main hypotheses ...
Francesco Pilade   +7 more
doaj   +1 more source

Calcareous nannofossils biostratigraphy (Upper Bajocian – Lower Bathonian) of the Ravin du Bès section (Bas Auran, Subalpine Basin, SE France), evolutionary trends of Watznaueria barnesiae and new enigmatic morphotypes of genus Rucinolithus

open access: yes, 2008
A biostratigraphic and evolutionary study based of calcareous nannofossils was performed on the Ravin du Bès section (Bas Auran area, SE France), proposed as formal candidate of Global Boundary Stratotype Section and Point (GSSP) for the base of the ...
D. Tiraboschi, E. Erba
core  

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