scholarly journals Eastern Mediterranean foraminiferal palaeoecological response to Mid-Late Pliocene climatic regime: A preliminary note.

2016 ◽  
Vol 47 (1) ◽  
pp. 112 ◽  
Author(s):  
H. Drinia ◽  
A. Antonarakou ◽  
S. Mihalakopoulos ◽  
E. Tsiolakis

The main objective of this work is to investigate the climatic influence on the sedimentation during mid to late Pliocene in Cyprus island. For this reason, a section located in Pissouri sub-basin, southern Cyprus, was chosen to be studied. The section comprises a nearly uninterrupted succession of marine sediments, dominated by grey marls, which are cyclically alternating with yellowish silty marls. The identification of age diagnostic planktonic foraminifera suggests a mid to upper Pliocene age. The calculated faunal parameters document cyclic fluctuations consistent with shifts in such climate belts. A good age resolution of the cycles and an indication of sedimentation rate would be required in order to connect cyclicity to orbital perturbations.

2001 ◽  
Vol 145 (1-2) ◽  
pp. 93-117 ◽  
Author(s):  
J.M. Rouchy ◽  
F. Orszag-Sperber ◽  
M.-M. Blanc-Valleron ◽  
C. Pierre ◽  
M. Rivière ◽  
...  

2017 ◽  
Vol 50 (1) ◽  
pp. 324
Author(s):  
M. Geraga ◽  
Ch. Anagnostou ◽  
I. Iliopoulos ◽  
M. Kontali

The present paper summarizes the preliminary results of the mineralogical and micropaleontological analysis conducted on sediment samples from core TYR05 retrieved from the anoxic and hypersaline Tyro basin in the eastern Mediterranean Sea. The core comprises a complex lithostratigraphic sequence attributed to the strong geodynamic regime of the area. The planktonic foraminifera associations present fluctuations which coincide with changes in the lithology of the core. The mineralogical composition of the sediments shows influence from the evaporites developed on the bottom of the basin. The mineral constituents in association to the microfauna assemblages suggest that the sediments include sapropelic layers. Further analyses are needed in order to determine safely the sapropelic deposits.


2020 ◽  
Vol 8 (9) ◽  
pp. 709
Author(s):  
Christina Giamali ◽  
George Kontakiotis ◽  
Efterpi Koskeridou ◽  
Chryssanthi Ioakim ◽  
Assimina Antonarakou

A multidisciplinary study was conducted in order to investigate the environmental factors affecting the planktonic foraminiferal and pteropod communities of the south Aegean Sea. Aspects of the Late Quaternary paleoceanographic evolution were revealed by means of quantitative analyses of planktonic foraminiferal and pteropod assemblages (including multivariate statistical approach; principal component analysis (PCA)), the oxygen (δ18O) and carbon (δ13C) isotopic composition of planktonic foraminifera and related paleoceanographic (planktonic paleoclimatic curve (PPC), productivity (E-index), stratification (S-index), seasonality) indices, extracted by the gravity core KIM-2A derived from the submarine area between Kimolos and Sifnos islands. Focusing on the last ~21 calibrated thousands of years before present (ka BP), cold and eutrophicated conditions were identified during the Late Glacial period (21.1–15.7 ka BP) and were followed by warmer and wetter conditions during the deglaciation phase. The beginning of the Holocene was marked by a climatic amelioration and increased seasonality. The more pronounced environmental changes were identified during the deposition of the sapropel sublayers S1a (9.4–7.7 ka BP) and S1b (6.9–6.4 ka BP), with extremely warm and stratified conditions. Pteropod fauna during the sapropel deposition were recorded for the first time in the south Aegean Sea, suggesting arid conditions towards the end of S1a. Besides sea surface temperature (SST), which shows the highest explanatory power for the distribution of the analyzed fauna, water column stratification, primary productivity, and seasonality also control their communities during the Late Quaternary.


2019 ◽  
Vol 142 ◽  
pp. 206-215 ◽  
Author(s):  
R.A. González-Fuenzalida ◽  
R. Herráez-Hernández ◽  
J. Verdú-Andrés ◽  
A. Bouzas-Blanco ◽  
A. Seco-Torrecillas ◽  
...  

2008 ◽  
Vol 254 (3-4) ◽  
pp. 224-229 ◽  
Author(s):  
Juan C. Larrasoaña ◽  
Andrew P. Roberts ◽  
Eelco J. Rohling

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