Dergiler / Turkish Journal of Earth Sciences / 2016 / Cilt: 25 - Sayı: 1

Late Quaternary chronostratigraphy of the Aegean Sea sediments: special reference to the ages of sapropels S1 S5

Sayfa
1–18
Yayın Tarihi
2022-11-05
DOI
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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

The onsetsof sapropel deposition were abrupt, but sapropel terminations were more gradual, controlled both by the amplitude of paleoclimaticchanges and the physiography/location of the basins.

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Amaç & Hipotez:Four sapropel layers (S1, S3, S4, and S5) are identified in five 6 10-m-long piston cores collected from the Aegean Sea basins.A chronostratigraphic framework is established for the last ~130 ka using benthic and planktonic foraminiferal oxygen isotope curves,total organic carbon contents, volcanic ash layers, and limited radiocarbon dates.
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Temel Bulgular & Veri:These data show that the onsets of sapropels S3, S4,and S5 in the Aegean Sea basins were not synchronous, highlighting the heterogeneity of the Aegean Sea basins in terms of rapid versuslagged responses to changing ocean-climate boundary conditions.
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Sonuç & Katkı:The onsetsof sapropel deposition were abrupt, but sapropel terminations were more gradual, controlled both by the amplitude of paleoclimaticchanges and the physiography/location of the basins.
🔬Tür:Araştırma Makalesi
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Alan Parametreleri

Abstract

Four sapropel layers (S1, S3, S4, and S5) are identified in five 6 10-m-long piston cores collected from the Aegean Sea basins.A chronostratigraphic framework is established for the last ~130 ka using benthic and planktonic foraminiferal oxygen isotope curves,total organic carbon contents, volcanic ash layers, and limited radiocarbon dates. These data show that the onsets of sapropels S3, S4,and S5 in the Aegean Sea basins were not synchronous, highlighting the heterogeneity of the Aegean Sea basins in terms of rapid versuslagged responses to changing ocean-climate boundary conditions. In all cases, however, the development of sapropels S3, S4, and S5in the Aegean Sea predate their counterparts in the eastern Mediterranean by several hundred to several thousand years. The onsetsof sapropel deposition were abrupt, but sapropel terminations were more gradual, controlled both by the amplitude of paleoclimaticchanges and the physiography/location of the basins.

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Bu Makaleye Atıf Yap

AKSU, A. E., İŞLER, E. B., HISCOTT, R. N. (2022). Late Quaternary chronostratigraphy of the Aegean Sea sediments: special reference to the ages of sapropels S1 S5. Turkish Journal of Earth Sciences, Cilt: 25 - Sayı: 1, 1–18. https://ajindex.com/articles/603109

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  1. Aksu AE, Jenner G, Hiscott RN, İşler EB (2008). Occurrence, stratigraphy and geochemistry of Late Quaternary tephra layers in the Aegean Sea and the Marmara Sea. Mar Geol 252: 174–192. Aksu AE, Yaşar D, Mudie PJ (1995). Paleoclimatic and paleoceanographic conditions leading to development of sapropel layer S1 in the Aegean Sea. Palaeogeogr Palaeocl 116: 71–101. Berger AL (1976). Obliquity and precession for the last 5 000 000 years. Astron Astrophys 51: 127–135. Calvert SE, Karlin RE (1998). Organic carbon accumulation in the Holocene sapropel of the Black Sea. Geology 26: 107–110. Capotondi L, Vigliotti L (1999). Magnetic and microfaunal characterization of late quaternary sediments from the Mediterranean: inferences about sapropel formation and paleoceanographic implications. P Ocean Drill Prog Sci Results 161: 505–517. Casford JSL, Abu Zied RH, Rohling EJ, Cooke S, Fontanier C, Leng MJ, Millard A, Thomson J (2007). A stratigraphically controlled multiproxy chronostratigraphy for the eastern Mediterranean. Paleoceanography 22: PA4215. Casford JSL, Rohling EJ, Abu Zied RH, Cooke S, Fontanier C, Leng M, Lykousis V (2002). Circulation changes and nutrient concentrations in the late Quaternary Aegean Sea: a nonsteady state concept for sapropel formation, Paleoceanography 17: 1024. Casford JSL, Rohling EJ, Abu-Zied RH, Fontanier C, Jorissen FJ, Leng MJ, Schmiedl G, Thomson J (2003). A dynamic concept for eastern Mediterranean circulation and oxygenation during sapropel formation. Palaeogeogr Palaeocl 190: 103–119. Cramp A, O’Sullivan G (1999). Neogene sapropels in the Mediterranean: a review. Mar Geol 153: 11–28. Emeis KC, Schulz H, Struck U, Rossignol-Strick M, Erlenkeuser H, Howell MW, Kroon D, Mackensen A, Ishizuka S, Oba T et al. (2003). Eastern Mediterranean surface water temperatures and δ 18 O composition during deposition of sapropels in the late Quaternary. Paleoceanography 18: 1005. Facorellis Y, Maniatis Y, Kromer B (1998). Apparent 14 C ages of marine mollusk shells from a Greek island: calculation of the marine reservoir effect in the Aegean Sea. Radiocarbon 40: 963–973. Fontugne MR, Calvert SE (1992). Late Pleistocene variability of the carbon isotopic composition of organic matter in the eastern Mediterranean: monitor of changes in carbon sources and atmospheric CO 2 concentrations. Paleoceanography 7: 1–20. Geraga M, Ioakim C, Lykousis V, Tsalia-Monopolis S, Mylona G (2010). The high-resolution palaeoclimatic and palaeoceanographic history of