Mediterranean–Black Sea gateway exchange: scientific drilling workshop on the BlackGate project
<p>The MagellanPlus workshop “BlackGate” addressed fundamental questions concerning the dynamic evolution of the Mediterranean–Black Sea (MBS) gateway and its palaeoenvironmental consequences. This gateway drives the Miocene–Quaternary circulation patterns in the Black Sea and governs its pres...
| Main Authors: | , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2022-10-01
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| Series: | Scientific Drilling |
| Online Access: | https://sd.copernicus.org/articles/31/93/2022/sd-31-93-2022.pdf |
| _version_ | 1811197368478990336 |
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| author | W. Krijgsman I. Vasiliev A. Beniest T. Lyons J. Lofi G. Tari C. P. Slomp N. Cagatay M. Triantaphyllou R. Flecker D. Palcu C. McHugh C. McHugh H. Arz P. Henry K. Lloyd G. Cifci Ö. Sipahioglu D. Sakellariou |
| author_facet | W. Krijgsman I. Vasiliev A. Beniest T. Lyons J. Lofi G. Tari C. P. Slomp N. Cagatay M. Triantaphyllou R. Flecker D. Palcu C. McHugh C. McHugh H. Arz P. Henry K. Lloyd G. Cifci Ö. Sipahioglu D. Sakellariou |
| author_sort | W. Krijgsman |
| collection | DOAJ |
| description | <p>The MagellanPlus workshop “BlackGate” addressed fundamental questions
concerning the dynamic evolution of the Mediterranean–Black Sea (MBS)
gateway and its palaeoenvironmental consequences. This gateway drives the
Miocene–Quaternary circulation patterns in the Black Sea and governs its
present status as the world's largest example of marine anoxia. The exchange
history of the MBS gateway is poorly constrained because continuous
Pliocene–Quaternary deposits are not exposed on land adjacent to the Black
Sea or northern Aegean. Gateway exchange is controlled by climatic
(glacio-eustatic-driven sea-level fluctuations) and tectonic processes in
the catchment as well as tectonic propagation of the North Anatolian Fault
Zone (NAFZ) in the gateway area itself. Changes in connectivity trigger
dramatic palaeoenvironmental and biotic turnovers in both the Black Sea and
Mediterranean domains. Drilling a Messinian to Holocene transect across the
MBS gateway will recover high-amplitude records of continent-scale
hydrological changes during glacial–interglacial cycles and allow us to
reconstruct marine and freshwater fluxes, biological turnover events, deep
biospheric processes, subsurface gradients in primary sedimentary
properties, patterns and processes controlling anoxia, chemical
perturbations and carbon cycling, growth and propagation of the NAFZ, the
timing of land bridges for Africa and/or Asia–Europe mammal migration, and the
presence or absence of water exchange during the Messinian salinity crisis.
During thorough discussions at the workshop, three key sites were selected
for potential drilling using a mission-specific platform (MSP): one on the
Turkish margin of the Black Sea (Arkhangelsky Ridge, 400 m b.s.f., metres below the seafloor), one on the
southern margin of the Sea of Marmara (North İmrali Basin, 750 m b.s.f.), and one
in the Aegean (North Aegean Trough, 650 m b.s.f.). All sites target Quaternary
oxic–anoxic marl–sapropel cycles. Plans include recovery of Pliocene
lacustrine sediments and mixed marine–brackish Miocene sediments from the
Black Sea and the Aegean. MSP drilling is required because the <i>JOIDES Resolution</i>
cannot pass under the Bosporus bridges. The wider goals are in line with the
aims and scope of the International Ocean Discovery Program (IODP) “2050 Science Framework: Exploring Earth by
Scientific Ocean Drilling” and relate specifically to the strategic
objectives “Earth's climate system”, “Tipping points in Earth's history”, and
“Natural hazards impacting society”.</p> |
| first_indexed | 2024-04-12T01:12:07Z |
| format | Article |
| id | doaj.art-82f623c294f24f6ebfc4feb366cb5c51 |
| institution | Directory Open Access Journal |
| issn | 1816-8957 1816-3459 |
| language | English |
| last_indexed | 2024-04-12T01:12:07Z |
| publishDate | 2022-10-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Scientific Drilling |
| spelling | doaj.art-82f623c294f24f6ebfc4feb366cb5c512022-12-22T03:54:03ZengCopernicus PublicationsScientific Drilling1816-89571816-34592022-10-01319311010.5194/sd-31-93-2022Mediterranean–Black Sea gateway exchange: scientific drilling workshop on the BlackGate projectW. Krijgsman0I. Vasiliev1A. Beniest2T. Lyons3J. Lofi4G. Tari5C. P. Slomp6N. Cagatay7M. Triantaphyllou8R. Flecker9D. Palcu10C. McHugh11C. McHugh12H. Arz13P. Henry14K. Lloyd15G. Cifci16Ö. Sipahioglu17D. Sakellariou18Department of Earth Sciences, Utrecht University, 3584 CB Utrecht, the NetherlandsSenckenberg Biodiversity and Climate Research Centre (SBiK-F), 60325 Frankfurt am Main, GermanyDepartment of Geosciences, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, the NetherlandsDepartment of Earth Sciences, University of California, Riverside, CA 92521, USAGéosciences Montpellier, CNRS, Université de Montpellier, 34095 Montpellier CEDEX 05, FranceOMV Upstream, Exploration, 1020 Vienna, AustriaDepartment of Earth Sciences, Utrecht University, 3584 CB Utrecht, the NetherlandsEMCOL Research Centre, Department of Geological Engineering, Istanbul Technical University, Ayazaga Campus, 34469 Istanbul, TurkeyFaculty of Geology and Geoenvironment, National and Kapodistrian University of Athens, Panepistimioupolis, 15784 Athens, GreeceBRIDGE, School of Geographical Sciences and Cabot Institute, University of Bristol, Bristol BS8 1SS, UKInstituto Oceanográfico, Universidade do São Paulo, 05508-120 São Paulo, BrazilQueens College, City University of New York, Flushing, NY 11367, USALamont-Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USAMarine Geology, Leibniz Institute for Baltic Sea Research Warnemünde (IOW), 18119 Rostock, GermanyAix-Marseille University, CNRS, IRD, INRAE, Coll France, CEREGE, 13545 Aix-en-Provence, FranceDepartment of Microbiology, University of Tennessee, Knoxville, TN 37996, USADokuz Eylül Üniversitesi, Deniz Bilimleri ve Teknolojisi Enstitüsü, İnciraltı, 35340 İzmir, TurkeyExploration Department, Türkiye Petrolleri Anonim Ortakliǧi (TPAO), 06530 Çankaya-Ankara, TurkeyInstitute of Oceanography, Hellenic Centre for Marine Research, 19103 Anavyssos, Greece<p>The MagellanPlus workshop “BlackGate” addressed fundamental questions concerning the dynamic evolution of the Mediterranean–Black Sea (MBS) gateway and its palaeoenvironmental consequences. This gateway drives the Miocene–Quaternary circulation patterns in the Black Sea and governs its present status as the world's largest example of marine anoxia. The exchange history of the MBS gateway is poorly constrained because continuous Pliocene–Quaternary deposits are not exposed on land adjacent to the Black Sea or northern Aegean. Gateway exchange is controlled by climatic (glacio-eustatic-driven sea-level fluctuations) and tectonic processes in the catchment as well as tectonic propagation of the North Anatolian Fault Zone (NAFZ) in the gateway area itself. Changes in connectivity trigger dramatic palaeoenvironmental and biotic turnovers in both the Black Sea and Mediterranean domains. Drilling a Messinian to Holocene transect across the MBS gateway will recover high-amplitude records of continent-scale hydrological changes during glacial–interglacial cycles and allow us to reconstruct marine and freshwater fluxes, biological turnover events, deep biospheric processes, subsurface gradients in primary sedimentary properties, patterns and processes controlling anoxia, chemical perturbations and carbon cycling, growth and propagation of the NAFZ, the timing of land bridges for Africa and/or Asia–Europe mammal migration, and the presence or absence of water exchange during the Messinian salinity crisis. During thorough discussions at the workshop, three key sites were selected for potential drilling using a mission-specific platform (MSP): one on the Turkish margin of the Black Sea (Arkhangelsky Ridge, 400 m b.s.f., metres below the seafloor), one on the southern margin of the Sea of Marmara (North İmrali Basin, 750 m b.s.f.), and one in the Aegean (North Aegean Trough, 650 m b.s.f.). All sites target Quaternary oxic–anoxic marl–sapropel cycles. Plans include recovery of Pliocene lacustrine sediments and mixed marine–brackish Miocene sediments from the Black Sea and the Aegean. MSP drilling is required because the <i>JOIDES Resolution</i> cannot pass under the Bosporus bridges. The wider goals are in line with the aims and scope of the International Ocean Discovery Program (IODP) “2050 Science Framework: Exploring Earth by Scientific Ocean Drilling” and relate specifically to the strategic objectives “Earth's climate system”, “Tipping points in Earth's history”, and “Natural hazards impacting society”.</p>https://sd.copernicus.org/articles/31/93/2022/sd-31-93-2022.pdf |
| spellingShingle | W. Krijgsman I. Vasiliev A. Beniest T. Lyons J. Lofi G. Tari C. P. Slomp N. Cagatay M. Triantaphyllou R. Flecker D. Palcu C. McHugh C. McHugh H. Arz P. Henry K. Lloyd G. Cifci Ö. Sipahioglu D. Sakellariou Mediterranean–Black Sea gateway exchange: scientific drilling workshop on the BlackGate project Scientific Drilling |
| title | Mediterranean–Black Sea gateway exchange: scientific drilling workshop on the BlackGate project |
| title_full | Mediterranean–Black Sea gateway exchange: scientific drilling workshop on the BlackGate project |
| title_fullStr | Mediterranean–Black Sea gateway exchange: scientific drilling workshop on the BlackGate project |
| title_full_unstemmed | Mediterranean–Black Sea gateway exchange: scientific drilling workshop on the BlackGate project |
| title_short | Mediterranean–Black Sea gateway exchange: scientific drilling workshop on the BlackGate project |
| title_sort | mediterranean black sea gateway exchange scientific drilling workshop on the blackgate project |
| url | https://sd.copernicus.org/articles/31/93/2022/sd-31-93-2022.pdf |
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