Astronomical tuning for the upper Messinian Spanish Atlantic margin; disentangling basin evolution, climate cyclicity and MOW

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doi: 10.1016/j.gloplacha.2015.10.009
Author(s): van den Berg, B. C. J.; Sierro, Francisco J.; Hilgen, F. J.; Flecker, R.; Larrasoaña, J. C.; Krijgsman, W.; Flores, José A.; Mata, M. P.; Bellido Martín, E.; Civis, J.; González Delgado, J. A.
Author Affiliation(s): Primary:
Universidad de Salamanca, Departamento de Geología, Salamanca, Spain
Utrecht University, Utrecht, Netherlands
University of Bristol, Bristol, United Kingdom
Instituto Geológico y Minero de España, Saragossa, Spain
Paleomagnetic Laboratory "Fort Hoofddijk", Utrecht, Netherlands
Volume Title: Global and Planetary Change
Source: Global and Planetary Change, Vol.135, p.89-103. Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0921-8181
Note: In English. 61 refs.; illus., incl. 1 table, sketch map
Summary: We present a new high-resolution cyclostratigraphic age model for the Messinian sediments of the Montemayor-1 core. This core was drilled in the Guadalquivir Basin in southern Spain, which formed part of the marine corridor linking the Mediterranean with the Atlantic in the Late Miocene. Tuning of high-resolution geochemical records reveals a strong precessional cyclicity, with maximum clastic supply from river run off coinciding with maximum summer insolation. We recognize a gradual change in the nature of the typical cyclic fluctuations in elemental compositions of the sediments through the core, which is associated with a gradual change in depositional environment as the basin infilled. After applying the new age model, the upper Messinian glacial stages and deglaciation are clearly identified in the oxygen isotope records of the Montemayor-1 core. Reinterpretation of existing planktonic and benthic oxygen isotope records for the core and comparison with equivalent successions in the Rifian Corridor in northern Morocco allow the re-evaluation of the influence of the different water masses in the region: North Atlantic Central Water and Mediterranean Outflow Water. We observe no direct influence of MOW immediately before or during the Messinian Salinity Crisis. Abstract Copyright (2015) Elsevier, B.V.
Year of Publication: 2015
Research Program: IODP Integrated Ocean Drilling Program
Key Words: 02 Geochemistry; 12 Stratigraphy, Historical Geology and Paleoecology; Atlantic Ocean; Basin analysis; Basins; Cenozoic; Chemical composition; Climate change; Cyclic processes; Cyclostratigraphy; Depositional environment; Europe; Expedition 339; Foraminifera; Globigerinacea; Globorotalia; Globorotaliidae; Guadalquivir Basin; Gulf of Cadiz; IODP Site U1387; Iberian Peninsula; Integrated Ocean Drilling Program; Invertebrata; Isotope ratios; Isotopes; MOW; Marine environment; Marine sediments; Mediterranean Outflow; Messinian; Microfossils; Miocene; Neogene; North Atlantic; Northeast Atlantic; O-18/O-16; Ocean circulation; Oxygen; Paleo-oceanography; Paleoclimatology; Paleoenvironment; Paleosalinity; Principal components analysis; Protista; Rotaliina; Sedimentation; Sediments; Southern Europe; Spain; Spectra; Stable isotopes; Statistical analysis; Tertiary; Upper Messinian; Upper Miocene; X-ray fluorescence spectra
Coordinates: N364819 N364820 W0074308 W0074308
Record ID: 2016042299
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands