Resultats globals: 5 registres trobats en 0.02 segons.
Articles, 5 registres trobats
Articles 5 registres trobats  
1.
10 p, 1.6 MB Influence of surface ocean density on planktonic foraminifera calcification / Zarkogiannis, Stergios. (National & Kapodistrian University of Athens. School of Earth Sciences. Faculty of Geology & Geoenvironment. Department of Historical Geology - Paleontology) ; Antonarakou, A. (National & Kapodistrian University of Athens. School of Earth Sciences. Faculty of Geology & Geoenvironment. Department of Historical Geology - Paleontology) ; Tripati, A. (European Institute of Marine Sciences (IUEM) Université de Brest. UMR 6538. Domaines Océaniques. Rue Dumont D'Urville. and IFREMER) ; Kontakiotis, George (Panepistēmio Athēnōn. Department of Historical Geology and Paleontology) ; Mortyn, P. Graham. (Department of Geography. Universitat Autònoma de Barcelona) ; Drinia, H. (National & Kapodistrian University of Athens. School of Earth Sciences. Faculty of Geology & Geoenvironment. Department of Historical Geology - Paleontology) ; Greaves, Mervyn (Department of Earth Sciences. University of Cambridge)
This study provides evidence that ambient seawater density influences calcification and may account for the observed planktonic foraminifera shell mass increase during glacial times. Volumes of weighed fossil Globigerina bulloides shells were accurately determined using X-ray Computer Tomography and were combined with water density reconstructions from Mg/Ca and δO measurements to estimate the buoyancy force exerted on each shell. [...]
2019 - 10.1038/s41598-018-36935-7
Scientific reports (Nature Publishing Group), Vol. 9 Núm. 1 (january 2019) , p. 533  
2.
14 p, 1.9 MB Eco-biostratigraphic advances in late quaternary geochronology and palaeoclimate : the marginal Gulf of Mexico analogue / Antonarakou, Assimina (National and Kapodistrian University of Athens) ; Kontakiotis, George (National and Kapodistrian University of Athens) ; Karageorgis, Aristomenis P. (Hellenic Centre for Marine Research) ; Besiou, Eva (National and Kapodistrian University of Athens) ; Zarkogiannis, Stergios (National and Kapodistrian University of Athens) ; Drinia, Hara (National and Kapodistrian University of Athens) ; Mortyn, P. Graham (Universitat Autònoma de Barcelona) ; Tripsanas, E. (Hellenic Petroleum Exploration and Production of Hydrocarbons)
This study combines high-resolution planktonic foraminiferal eco-biostratigraphy and palaeoclimatic data from the high-sedimentation-rate core JPC-26 from the northwestern margin of the Gulf of Mexico (GoM). [...]
2019 - 10.7306/gq.1457
Geological quarterly, Vol. 63, núm. 1 (2019) , p. 178-191  
3.
11 p, 587.7 KB Latitudinal variation of planktonic foraminifera shell masses during Termination I / Zarkogiannis, Stergios (Panepistēmio Athēnōn. Department of Historical Geology and Paleontology) ; Kontakiotis, George (Panepistēmio Athēnōn. Department of Historical Geology and Paleontology) ; Antonarakou, Assimina (Panepistēmio Athēnōn. Department of Historical Geology and Paleontology) ; Mortyn, P. Graham (Universitat Autònoma de Barcelona. Institut de Ciència i Tecnologia Ambiental) ; Drinia, Hara (Panepistēmio Athēnōn. Department of Historical Geology and Paleontology)
The oceans' surface layer holds large amounts of dissolved inorganic carbon that is exchanged rapidly with the atmosphere. Carbon enters the ocean mainly through the dissolution of atmospheric carbon dioxide (CO2), and a part of it is converted into carbonate by marine organisms. [...]
2019 - 10.1088/1755-1315/221/1/012052
IOP conference series. Earth and environmental science, Vol. 221 (2019) , art. 012052  
4.
11 p, 811.1 KB Evaluating the effect of marine diagenesis on late Miocene pre-evaporitic sedimentary successions of Eastern Mediterranean Sea / Antonarakou, Assimina (Panepistēmio Athēnōn. Department of Historical Geology and Paleontology) ; Kontakiotis, George (Panepistēmio Athēnōn. Department of Historical Geology and Paleontology) ; Vasilatos, Charalampos (Panepistēmio Athēnōn. Department of Historical Geology and Paleontology) ; Besiou, Eva (Panepistēmio Athēnōn. Department of Historical Geology and Paleontology) ; Zarkogiannis, Stergios (Panepistēmio Athēnōn. Department of Historical Geology and Paleontology) ; Drinia, Hara (Panepistēmio Athēnōn. Department of Historical Geology and Paleontology) ; Mortyn, P. Graham (Universitat Autònoma de Barcelona. Institut de Ciència i Tecnologia Ambiental) ; Tsaparas, Nikolaos (Panepistēmio Athēnōn. Department of Historical Geology and Paleontology) ; Makri, Panayota (Panepistēmio Athēnōn. Department of Historical Geology and Paleontology) ; Karakitsios, Vasileios (Panepistēmio Athēnōn. Department of Historical Geology and Paleontology) ; Universitat Autònoma de Barcelona. Departament de Geografia
The microstructure and geochemical composition of foraminiferal tests are valuable archives for the reconstruction of paleoclimatic and paleoecological changes. In this context, the late Miocene Globigerinoides obliquus shells from Faneromeni section (Crete Island) were investigated through Scanning Electron Microscopy (SEM) imaging, Energy Dispersive System (EDS) analysis and X-Ray Diffraction (XRD) spectroscopy in order to evaluate their potential as paleoenvironmental archives in the eastern Mediterranean. [...]
2019 - 10.1088/1755-1315/221/1/012051
IOP conference series: Earth and environmental science, Vol. 221, conference 1 (2019) , art. 012051  
5.
14 p, 1006.0 KB Field-based validation of a diagenetic effect on G. ruber Mg/Ca paleothermometry: Core top results from the Aegean Sea (eastern Mediterranean) / Kontakiotis, George (Panepistēmio Athēnōn. Department of Historical Geology and Paleontology) ; Mortyn, P. Graham (Universitat Autònoma de Barcelona. Institut de Ciència i Tecnologia Ambientals) ; Antonarakou, Assimina (Panepistēmio Athēnōn. Department of Historical Geology and Paleontology) ; Martínez Botí, M. A. (Universitat Autònoma de Barcelona. Institut de Ciència i Tecnologia Ambientals) ; Triantaphyllou, Maria V. (Panepistēmio Athēnōn. Department of Historical Geology and Paleontology)
Recent work across the Mediterranean Sea has illustrated the salinity and overgrowth effects on planktonic foraminiferal Mg/Ca, which potentially confound the use of this as a temperature proxy for paleoceanographic reconstructions. [...]
2011 - 10.1029/2011GC003692
Geochemistry, geophysics, geosystems, Vol. 12, Issue 9 (Sept. 2011) , p. 1-14  

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