Results 21 to 30 of about 20,808 (214)

Paleoecology of the Maastrichtian and Danian sediment at North of Central Alborz, Iran, based on Planktonic foraminifera [PDF]

, 2010
In order to study the fossil contents of the Ziarat-kola section for biostratigraphical purposes the 212 meters was sampled at Central Alborz. The sequence is mainly made up of monotonous grey- green to light grey marl.
Behnaz Balmaki
core   +2 more sources

Palaeogene triserial planktonic foraminifera [PDF]

Journal of Micropalaeontology, 1998
Abstract. Triserial planktonic foraminiferal species from the Palaeogene are classified into the Early Danian Guembelitria, with pore mounds on the test surface, and the Early Eocene-Late Oligocene Jenkinsina, which are also microperforate but lack pore mounds. The stratigraphic and palaeogeographic ranges are discussed, the holotype of G.
Jenkins, D. Graham, Whittaker, John E., Curry, Dennis   +2 more
openaire   +2 more sources

Environmental Controls of Size Distribution of Modern Planktonic Foraminifera in the Tropical Indian Ocean

Geochemistry, Geophysics, Geosystems, 2023
Paleoceanographic studies often rely on abundance changes in microfossil species, with little consideration for characteristics such as organism size, which may also be related to environmental changes.
Michael B. Adebayo, Clara T. Bolton, Ross Marchant, Franck Bassinot, Sandrine Conrod, Thibault deGaridel‐Thoron   +5 more
doaj   +1 more source

Changing atmospheric Δ^(14)C and the record of deep water paleoventilation ages [PDF]

, 1997
We propose a new calculation method to better estimate the deep water ventilation age from benthic-planktonic foraminifera ^(14)C ages. Our study is motivated by the fact that changes in atmospheric Δ^(14)C through time can cause contemporary benthic and
Adkins, Jess F., Boyle, Edward A.
core   +1 more source

Triassic and Jurassic possible planktonic foraminifera and the assemblages recovered from the Ogrodzieniec Glauconitic Marls Formation (uppermost Callovian and lowermost Oxfordian, Jurassic) of the Polish Basin [PDF]

Journal of Micropalaeontology, 2023
In the 1960s and 1970s Werner Fuchs of the Austrian Geological Survey (Vienna) described a significant number of new foraminiferal taxa that he considered ancestral to the planktonic foraminifera. All these taxa are well-curated in the collections of the
M. B. Hart, H. Gebhardt, E. Setoyama, C. W. Smart, J. Tyszka   +4 more
doaj   +1 more source

Sea surface temperature changes in the southern California borderlands during the last glacial-interglacial cycle [PDF]

, 1996
A variety of evidence suggests that average sea surface temperatures (SSTs) during the last glacial maximum in the California Borderlands region were significantly colder than during the Holocene.
Bandy, Bard, Berelson, Berger, Bond, Bond, Bradshaw, Clark, CLIMAP Project Members, Climate: Long-Range Investigation, Cooperative Holocene Mapping Project (COHMAP) Members, Coulbourn, Dansgaard, David M. Anderson, Epstein, Fairbanks, Fairbanks, Fischer, Gorsline, Gorsline, Grootes, Hickey, Hickey, Hickey, Hutson, Huyer, Imbrie, Imbrie, Jahnke, Jianning Le, Kahn, Kennett, Kennett, Kheradpir, Lowell D. Stott, Martin, Martin, Martinson, McIntyre, Okada, Overpeck, P. Graham Mortyn, Prahl, Prell, Reynolds, Robert C. Thunell, Sautter, Sautter, Taylor, Thunell, Thunell, Thunell, Tont   +52 more
core   +2 more sources

Sedimentary and Diagenetic Controls across the Cretaceous—Paleogene Transition: New Paleoenvironmental Insights of the External Ionian Zone from the Pelagic Carbonates of the Gardiki Section (Epirus, Western Greece)

Journal of Marine Science and Engineering, 2022
Field investigation, biostratigraphic, paleoecological, and sedimentary microfacies analyses, as well as diagenetic processes characterization, were carried out in the Epirus region (Western Ionian Basin) to define the depositional environments and ...
Leonidas Moforis, George Kontakiotis, Hammad Tariq Janjuhah, Alexandra Zambetakis-Lekkas, Dimitrios Galanakis, Panagiotis Paschos, Christos Kanellopoulos, Sotirios Sboras, Evangelia Besiou, Vasileios Karakitsios, Assimina Antonarakou   +10 more
doaj   +1 more source

Northeastern Atlantic benthic foraminifera during the last 45,000 years: Changes in productivity seen from the bottom up [PDF]

, 1995
We studied benthic foraminifera from the last 45 kyr in the >63 mu m size fraction in Biogeochemical Ocean Flux Studies (BOFS) cores 5K (50 degrees 41.3'N, 21 degrees 51.9'W, depth 3547 m) and 14K (58 degrees 37.2'N, 19 degrees 26.2'W, depth 1756 m), at ...
Booth, L, Maslin, M, Shackleton, NJ, Thomas, E   +3 more
core   +1 more source

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

Minería 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, Lourdes María Pérez-Estrada, Reinaldo Rojas-Consuegra   +2 more
doaj  

Planktonic foraminifera assemblage composition and flux dynamics inferred from an annual sediment trap record in the central Mediterranean Sea [PDF]

Biogeosciences
The Sicily Channel, located in the central Mediterranean Sea, represents a key point for the regional oceanographic circulation, as it is regarded as the sill that separates the western and eastern basins.
T. M. Béjard, A. S. Rigual-Hernández, J. P. Tarruella, J.-A. Flores, A. Sanchez-Vidal, I. Llamas-Cano, F. J. Sierro   +6 more
doaj   +1 more source