Late Holocene climate variability in the southwestern Mediterranean region; an integrated marine and terrestrial geochemical approach

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doi: 10.5194/cp-6-807-2010
Author(s): Martín-Puertas, Celia; Jiménez-Espejo, Francisco; Martínez-Ruiz, Francisca; Nieto-Moreno, Vanessa; Rodrigo, M.; Mata, M. P.; Valero-Garcés, Blas L.
Author Affiliation(s): Primary:
Deutsches GeoForschungs Zentrum Helmholtz-Zentrum, Potsdam, Germany
Other:
Universidad de Granada, Spain
Instituto Geológico y Minero de España, Spain
Consejo Superior de Investigaciones Científicas, Spain
Volume Title: Climate of the Past
Source: Climate of the Past, 6(6), p.807-816. Publisher: Copernicus, Katlenburg-Lindau, International. ISSN: 1814-9324
Note: In English. Published in Climate of the Past Discussions: 6 September 2010, http://www.clim-past-discuss.net/6/1655/2010/cpd-6-1655-2010.html; accessed in Mar., 2011; doi:10.5194/cp-6-807-2010. 68 refs.; illus., incl. 1 table, sketch map
Summary: A combination of marine (Alboran Sea cores, ODP 976 and TTR 300 G) and terrestrial (Zoñar Lake, Andalucia, Spain) geochemical proxies provides a high-resolution reconstruction of climate variability and human influence in the southwestern Mediterranean region for the last 4000 years at inter-centennial resolution. Proxies respond to changes in precipitation rather than temperature alone. Our combined terrestrial and marine archive documents a succession of dry and wet periods coherent with the North Atlantic climate signal. A dry period occurred prior to 2.7 cal ka BP - synchronously to the global aridity crisis of the third-millennium BC - and during the Medieval Climate Anomaly (1.4-0.7 cal ka BP). Wetter conditions prevailed from 2.7 to 1.4 cal ka BP. Hydrological signatures during the Little Ice Age are highly variable but consistent with more humidity than the Medieval Climate Anomaly. Additionally, Pb anomalies in sediments at the end of the Bronze Age suggest anthropogenic pollution earlier than the Roman Empire development in the Iberian Peninsula. The Late Holocene climate evolution of the in the study area confirms the see-saw pattern between the eastern and western Mediterranean regions and the higher influence of the North Atlantic dynamics in the western Mediterranean.
Year of Publication: 2010
Research Program: ODP Ocean Drilling Program
Key Words: 24 Surficial Geology, Quaternary Geology; Africa; Alboran Sea; Andalusia Spain; Arid environment; Atmosphere; Atmospheric precipitation; Cenozoic; Climate change; Cores; Europe; Foraminifera; Geochemical methods; Ghana; Globigerina; Globigerina bulloides; Globigerinacea; Globigerinidae; Holocene; Human activity; Humid environment; Iberian Peninsula; Invertebrata; Ions; Isotopes; Lake Bosumtwi; Lake-level changes; Lead; Leg 161; Mediterranean Sea; Metals; Microfossils; Middle Ages; Morocco; Neoglacial; Neogloboquadrina; Neogloboquadrina pachyderma; North Africa; Northern Morocco; O-18; ODP Site 976; Ocean Drilling Program; Oxygen; Paleoclimatology; Paleoenvironment; Paleotemperature; Pb-210; Protista; Quaternary; Radioactive isotopes; Rotaliina; Southern Europe; Spain; Stable isotopes; Temperature; Terrestrial environment; Upper Holocene; West Africa; West Mediterranean; Zonar Lake
Coordinates: N365255 N365255 W0021725 W0021725
N372900 N372900 W0044122 W0044122
N361219 N361219 W0041845 W0041845
Record ID: 2011080088
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Copernicus Gesellschaft, Katlenburg-Lindau, Germany