Takarkori rock shelter (SW Libya): an archive of Holocene climate and environmental changes in the central Sahara

Citation

Material Information

Title:
Takarkori rock shelter (SW Libya): an archive of Holocene climate and environmental changes in the central Sahara
Series Title:
Quaternary Science Reviews
Creator:
Cremaschi, Mauro
Zerboni, Andrea
Mercuri, Anna Maria
Olmi, Linda
Biagetti, Stefano
di Lernia, Savino
Publisher:
Elsevier
Publication Date:
Language:
English

Subjects

Subjects / Keywords:
Rock Shelter Site ( local )
Site Formation Processes ( local )
Climate Changes ( local )
Early–Middle Holocene ( local )
Micromorphology ( local )
Palynology ( local )
Hunter–Gatherers ( local )
Pastoralists ( local )
Tadrart Acacus ( local )
Sahara ( local )
Genre:
serial ( sobekcm )

Notes

Abstract:
Rock shelters in the central Saharan massifs preserve anthropogenic stratigraphic sequences that represent both a precious archive for the prehistory of the region and a powerful proxy data for Holocene palaeoenvironments. The geoarchaeological (micromorphology) and archaeobotanical (pollen analysis) approaches were integrated to investigate the anthropogenic sedimentary sequence preserved within the Takarkori rock shelter, a Holocene archaeological site located in the Libyan central Sahara (southern Tadrart Acacus massif). The site was occupied throughout the Early and Middle Holocene (African Humid Period) by groups of hunter–gatherers before and by pastoral communities later. The investigation on the inner part of the sequence allows to recognize the anthropogenic contribution to sedimentation process, and to reconstruct the major changes in the Holocene climate. At the bottom of the stratigraphic sequence, evidence for the earliest frequentation of the site by hunters and gatherers has been recognized; it is dated to c. 10,170 cal yr BP and is characterized by high availability of water, freshwater habitats and sparsely wooded savannah vegetation. A second Early Holocene occupation ended at c. 8180 cal yr BP; this phase is marked by increased aridity: sediments progressively richer in organics, testifying to a more intense occupation of the site, and pollen spectra indicating a decrease of grassland and the spreading of cattails, which followed a general lowering of lake level or widening of shallow-water marginal habitats near the site. After this period, a new occupational phase is dated between c. 8180 and 5610 cal yr BP; this period saw the beginning of the frequentation of pastoral groups and is marked by an important change in the forming processes of the sequence. Sediments and pollen spectra confirm a new increase in water availability, which led to a change in the landscape surrounding the Takarkori rock shelter with the spreading of water bodies. The upper part of the sequence, dating between c. 570
Original Version:
Quaternary Science Reviews, Vol. 101 (2014-10-01).

Record Information

Source Institution:
University of South Florida Library
Holding Location:
University of South Florida
Rights Management:
This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the bounds of Fair Use or other exemptions to copyright law must be obtained from the copyright holder.

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