[Schmincke] Impact of long-term explosive volcanism from Nemrut and Süphan volcanoes on the compositional, temporal, dynamic, and paleoclimatic evolution of Lake Van (Turkey)

German Title: Impact of long-term explosive volcanism from Nemrut and Süphan volcanoes on the compositional, temporal, dynamic, and paleoclimatic evolution of Lake Van (Turkey)

Abbreviation: 277

Current Status: completed


Main Applicant:Prof. Dr. Hans-Ulrich Schmincke


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Conveyor Begin:
Conveyor End:
Conveyor Duration:
Year: 2010


Description

The temporal, geodynamic and environmental (paleoclimatic) reconstruction of a tectonically and volcanically highly active lake basin, bordered by active volcanoes Nemrut and Süphan, over the past c. 500 ka is the overall objective. Research strategies include fieldwork on the explosive products of both volcanoes and likely >500 tephra layers to be obtained by drilling into Lake Van in 2010, tephra layers representing the stratigraphic and temporal framework of the cores. Analytical methods, including structure, texture, mineralogical and chemical composition (XRF, EMP, laser-ICP-MS of glass and phenocrysts and 40Ar/39Ar single crystal dating), will allow determining the magnitude of eruptions, their distribution in time and space, correlation between drill sites and mass flux into the alkaline lake through time. Climate proxies include paleosols separating tephra units and paleowind directions. Temporal and dynamic reconstruction of fallout, pyroclastic flows, flank collapses and tsunamis resulting from sudden mass impact onto the lake will help to assess hazard and risk for the rapidly developing areas bordering huge Lake Van.

Related Publications

Schmincke, Hans-Ulrich, Sumita, Mari, Cukur, Deniz (2018). "Large-volume basaltic hyaloclastite eruption along a propagating land/lake lithosphere fracture at Lake Van (Eastern Anatolia): impact of volcanism on the evolution of Lake Van V" Bulletin of Volcanology 80: 82 p1-23


Schmincke, Hans-Ulrich, Sumita, Mari (2014). "Impact of volcanism on the evolution of Lake Van (eastern Anatolia) III: Periodic (Nemrut) vs. episodic (Süphan) explosive eruptions and climate forcing reflected in a tephra gap between ca. 14 ka and ca. 30 ka" Journal of Volcanology and Geothermal Research p195-213


Sumita, Mari, Schmincke, Hans-Ulrich (2013). "Impact of volcanism on the evolution of Lake Van I: evolution of explosive volcanism of Nemrut Volcano (eastern Anatolia) during the past >400,000 years" Bulletin of Volcanology p714


Sumita, Mari, Schmincke, Hans-Ulrich (2013). "Impact of volcanism on the evolution of Lake Van II: Temporal evolution of explosive volcanism of Nemrut Volcano (eastern Anatolia) during the past ca. 0.4 Ma" Journal of Volcanology and Geothermal Research 253 p15-34