Quantitative analysis of Paratethys sea level change during the Messinian Salinity Crisis

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doi: 10.1016/j.margeo.2016.05.002
Author(s): de la Vara, Alba; van Baak, Christiaan G. C.; Marzocchi, Alice; Grothe, Arjen; Meijer, Paul T.
Author Affiliation(s): Primary:
Utrecht University, Department of Earth Sciences, Utrecht, Netherlands
University of Bristol, United Kingdom
Volume Title: Marine Geology
Source: Marine Geology, Vol.379, p.39-51. Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0025-3227 CODEN: MAGEA6
Note: In English. 58 refs.; illus., incl. 1 table, geol. sketch map
Summary: At the time of the Messinian Salinity Crisis in the Mediterranean Sea (i.e., the Pontian stage of the Paratethys), the Paratethys sea level dropped also. Evidence found in the sedimentary record of the Black Sea and the Caspian Sea has been interpreted to indicate that a sea level fall occurred between 5.6 and 5.5 Ma. Estimates for the magnitude of this fall range between tens of meters to more than 1500 m. The purpose of this study is to provide quantitative insight into the sensitivity of the water level of the Black Sea and the Caspian Sea to the hydrologic budget, for a scenario in which the Paratethys is disconnected from the Mediterranean. Using a Late Miocene bathymetry based on a palaeographic map we quantify the fall in sea level, the mean salinity, and the time to reach equilibrium for a wide range of negative hydrologic budgets. By combining our results with (i) estimates calculated from a set of recent global Late Miocene climate simulations and (ii) reconstructed basin salinities, we are able to rule out a drop in sea level of the order of 1000 m in the Caspian Sea during this time period. In the Black Sea, however, such a large sea level fall cannot be fully discarded.
Year of Publication: 2016
Research Program: DSDP Deep Sea Drilling Project
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Black Sea; Caspian Sea; Cenozoic; DSDP Site 380; DSDP Site 381; Deep Sea Drilling Project; East Mediterranean; Leg 42B; Mathematical models; Mediterranean Sea; Messinian; Messinian Salinity Crisis; Miocene; Neogene; Paleobathymetry; Paleogeography; Paleosalinity; Paratethys; Pontian; Sea-level changes; Tertiary; Upper Miocene
Coordinates: N420559 N420559 E0293654 E0293654
Record ID: 2017012028
Copyright Information: GeoRef, Copyright 2017 American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands