Late Pleistocene and Holocene alluvial archives in the Southwestern Mediterranean: Changes in fluvial dynamics and past human response

Zielhofer, Christoph; Faust, Dominik; Linstädter, Jörg

doi:10.1016/j.quaint.2007.09.016

Cited by 88 publications

(67 citation statements)

References 48 publications

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“…80 and 75 ka during hiatus B and possibly also for shorter periods associated with the other detrital layers A, C and D. These thin detrital layers are likely to be remnants of in-washed or in-blown material caused by reduction in vegetation cover and increased surface sediment mobility, as often seen during cool/dry periods in western Mediterranean dryland catchments (e.g. Zielhofer et al, 2008). During the later part of hiatus B (Fig.…”

Section: Growth Cessationmentioning

confidence: 85%

Sub‐millennial climate shifts in the western Mediterranean during the last glacial period recorded in a speleothem from Mallorca, Spain

Hodge¹,

Richards²,

Smart³

et al. 2008

J Quaternary Science

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2008. Sub-millennial climate shifts in the western Mediterranean during the last glacial period recorded in a speleothem from Mallorca, Spain.ABSTRACT: Very few high-resolution and directly dated terrestrial archives of the last glacial period exist for the western Mediterranean region, yet this is a key locality for recording sub-millennial North Atlantic and Mediterranean climate change. Here, we present evidence of effective precipitation changes based on growth history and d 13 C of calcite in a Mallorcan stalagmite that grew between 112 and 48 ka. Effective precipitation in Mallorca appears to have been sensitive to proximal sea surface temperature variations and at certain times, ca. 76 ka for example, changed rapidly from moist to arid conditions in only a few centuries. A sea-level highstand during Marine Isotope Stage (MIS) 5a interrupted growth. Regrowth started promptly after this, but effective precipitation decreased markedly for much of the later part of MIS 5a, and also for shorter periods correlative with Heinrich events H8 (ca. 90 ka) and H6 (ca. 65 ka), with growth ceasing during H5 (ca. 48 ka). Arid episodes in Mallorca appear to be expressions of extremely cold periods recorded further north in Europe and occur contemporaneously with rapid decreases in Greenland temperature.

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Section: Growth Cessationmentioning

confidence: 85%

Sub‐millennial climate shifts in the western Mediterranean during the last glacial period recorded in a speleothem from Mallorca, Spain

Hodge¹,

Richards²,

Smart³

et al. 2008

J Quaternary Science

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“…The Kert River is the important river in the Kert basin, which is mostly characterized by a seasonal flow regime. This stream with a total long rounded 90 km and a catchments area rounded 2,710 km 2 (Zielhofer et al 2008). During the Miocene to Villafranchian, the Kert depression received mixed and varied thick marine and continental sedimentation.…”

Section: Geological Settingmentioning

confidence: 95%

The use of environmental markers to identify groundwater salinization sources in a Neogene basin, Kert aquifer case, NE Morocco

Elgettafi

Elmandour

Himi

et al. 2013

Int. J. Environ. Sci. Technol.

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Environmental isotopes data of oxygen and hydrogen of natural water and sulphur and oxygen of dissolved sulphate as well as characteristics of d-excess are used to illustrate the salinity origin in Kert aquifer NE Morocco. In this study, 14 groundwater samples and surface water of the Kert River were collected in the Kert plain during December 2008, and were combined with previously collected hydrochemical data. The isotope compositions of these waters range from -5.74 to -4.51 % for oxygen and from -40.8 to -34.1 % for hydrogen. In Kert River these values are -6.47 % for oxygen and -47.56 % for hydrogen. All the samples with a slope \8 do not fall on the meteoric water line indicating a light evaporation. Water has low and different d-excess values (ranging from ?1.37 to ?9.82 %), reflecting different climatic conditions. Based on the nitrate concentration water in the Kert aquifer comes from the modern precipitation. The isotope compositions range from -2.2 to ?16 % for sulphur and from ?5.02 to ?13.86 % for oxygen. In Kert River these values are -4.6 and ?5.3 % for sulphur and oxygen, respectively. There are fairly constant difference between oxygen of water and the oxygen of sulphate suggesting a dominant control of this latter in sulphate sources. At least three major sulphate sources were identified by the isotope data from sulphate in these waters: (1) dissolved marine sulphate from the underlying upper Miocene unit; (2) dissolved sulphate from Kert River; (3) sulphate derived from oxidation of sulphur compounds in the metamorphic massif of Temsamane. The latter has a dilution role. The isotopic variations of these waters and sulphate concentration therein reflect mixing of these sources in the aquifer.

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“…Early dates in North Africa indicate the arrival of the Neolithic economy there around 5600 calBC (Linstädter 2004), but technological innovations possibly originating from the African continent are thought to have reached the southern Iberian peninsula towards the latter sixth millennium calBC ). The somewhat complicated and intensively debated situation in the western Mediterranean makes it currently difficult to come to any robust conclusions about possible links to climate fluctuations, but for the 8.2 ka-event at least hypotheses may be formulated, and lately IRD events where found to have had an influence on sedimentation rates of fluvial systems in Morocco and Tunesia (Zielhofer et al 2008).…”

Section: Holocene Ird Phases and The Neolithic Transitionmentioning

confidence: 99%

Climate fluctuations and trajectories to complexity in the Neolithic: towards a theory

Gronenborn

2009

Doc. praeh.

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Theories about the emergence and spread of farming in western Eurasia have a long research history. Occasionally, climate fluctuations have served as explanations for short-term culture change. However, the entire Holocene climate fluctuation sequence has so far not been regarded. First steps towards a theory which combines the successive stages in Neolithization and early to Mid-Holocene climate fluctuations are described.

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Late Pleistocene and Holocene alluvial archives in the Southwestern Mediterranean: Changes in fluvial dynamics and past human response

Cited by 88 publications

References 48 publications

Sub‐millennial climate shifts in the western Mediterranean during the last glacial period recorded in a speleothem from Mallorca, Spain

Sub‐millennial climate shifts in the western Mediterranean during the last glacial period recorded in a speleothem from Mallorca, Spain

The use of environmental markers to identify groundwater salinization sources in a Neogene basin, Kert aquifer case, NE Morocco

Climate fluctuations and trajectories to complexity in the Neolithic: towards a theory

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