scholarly journals Correction to: Does the shape make a difference? Evaluating the ethnic role of cranial modification in the Pampa-Patagonia region (Argentina) during the late Holocene

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Alejandro Serna ◽  
Luciano Prates ◽  
Gustavo Flensborg ◽  
Gustavo Martínez ◽  
Cristian Favier Dubois ◽  
...  
2018 ◽  
Vol 11 (6) ◽  
pp. 2597-2610 ◽  
Author(s):  
Serna Alejandro ◽  
Prates Luciano ◽  
Flensborg Gustavo ◽  
Martínez Gustavo ◽  
Favier Dubois Cristian ◽  
...  

2020 ◽  
Vol 236 ◽  
pp. 106265 ◽  
Author(s):  
Stephen E. Darby ◽  
Peter G. Langdon ◽  
James L. Best ◽  
Julian Leyland ◽  
Christopher R. Hackney ◽  
...  

Radiocarbon ◽  
2009 ◽  
Vol 51 (2) ◽  
pp. 457-470 ◽  
Author(s):  
Sylvain Ozainne ◽  
Laurent Lespez ◽  
Yann Le Drezen ◽  
Barbara Eichhorn ◽  
Katharina Neumann ◽  
...  

At Ounjougou, a site complex situated in the Yamé River valley on the Bandiagara Plateau (Dogon country, Mali), multidisciplinary research has revealed a rich archaeological and paleoenvironmental sequence used to reconstruct the history of human-environment interactions, especially during the Late Holocene (3500–300 cal BC). Geomorphological, archaeological, and archaeobotanical data coming from different sites and contexts were combined in order to elaborate a chronocultural and environmental model for this period. Bayesian analysis of 54 14C dates included within the general Late Holocene stratigraphy of Ounjougou provides better accuracy for limits of the main chronological units, as well as for some particularly important events, like the onset of agriculture in the region. The scenario that can be proposed in the current state of research shows an increasing role of anthropogenic fires from the 3rd millennium cal BC onwards, and the appearance of food production during the 2nd millennium cal BC, coupled with a distinctive cultural break. The Late Holocene sequence ends around 300 cal BC with an important sedimentary hiatus that lasts until the end of the 4th century cal AD.


2017 ◽  
Vol 29 (7) ◽  
pp. 2045-2059 ◽  
Author(s):  
José Antonio López-Sáez ◽  
Grettel Vargas ◽  
Jesús Ruiz-Fernández ◽  
Olivier Blarquez ◽  
Francisca Alba-Sánchez ◽  
...  

2020 ◽  
Vol 16 (4) ◽  
pp. 1127-1143
Author(s):  
Annalena A. Lochte ◽  
Ralph Schneider ◽  
Markus Kienast ◽  
Janne Repschläger ◽  
Thomas Blanz ◽  
...  

Abstract. The Labrador Sea is important for the modern global thermohaline circulation system through the formation of intermediate Labrador Sea Water (LSW) that has been hypothesized to stabilize the modern mode of North Atlantic deep-water circulation. The rate of LSW formation is controlled by the amount of winter heat loss to the atmosphere, the expanse of freshwater in the convection region and the inflow of saline waters from the Atlantic. The Labrador Sea, today, receives freshwater through the East and West Greenland currents (EGC, WGC) and the Labrador Current (LC). Several studies have suggested the WGC to be the main supplier of freshwater to the Labrador Sea, but the role of the southward flowing LC in Labrador Sea convection is still debated. At the same time, many paleoceanographic reconstructions from the Labrador Shelf focussed on late deglacial to early Holocene meltwater run-off from the Laurentide Ice Sheet (LIS), whereas little information exists about LC variability since the final melting of the LIS about 7000 years ago. In order to enable better assessment of the role of the LC in deep-water formation and its importance for Holocene climate variability in Atlantic Canada, this study presents high-resolution middle to late Holocene records of sea surface and bottom water temperatures, freshening, and sea ice cover on the Labrador Shelf during the last 6000 years. Our records reveal that the LC underwent three major oceanographic phases from the mid- to late Holocene. From 6.2 to 5.6 ka, the LC experienced a cold episode that was followed by warmer conditions between 5.6 and 2.1 ka, possibly associated with the late Holocene thermal maximum. While surface waters on the Labrador Shelf cooled gradually after 3 ka in response to the neoglaciation, Labrador Shelf subsurface or bottom waters show a shift to warmer temperatures after 2.1 ka. Although such an inverse stratification by cooling of surface and warming of subsurface waters on the Labrador Shelf would suggest a diminished convection during the last 2 millennia compared to the mid-Holocene, it remains difficult to assess whether hydrographic conditions in the LC have had a significant impact on Labrador Sea deep-water formation.


The Holocene ◽  
2020 ◽  
Vol 30 (4) ◽  
pp. 519-536 ◽  
Author(s):  
James Hooper ◽  
Samuel K Marx ◽  
Jan-Hendrik May ◽  
Liliana C Lupo ◽  
Julio J Kulemeyer ◽  
...  

The Puna-Altiplano plateau represents a regionally significant dust source, which is critically located at the nexus between the tropical and sub-polar synoptic systems that dominate the South American climate. Dust emissions in this region would therefore be expected to be sensitive to changes in these systems, in particular the strength and position of the South American Summer Monsoon (SASM). Here, we present a late-Holocene multi-proxy study where changes in dust flux, reconstructed from a high-altitude peat mire, are examined in light of climate variability and human impacts. Results show that for most the 4300 cal. yr BP record, dust flux sensitively tracked changes in SASM activity. Prior to 2600 cal. yr BP relatively high dust flux implies dry conditions prevailed across the Puna-Altiplao in association with reduced SASM activity. The chemistry of dust deposited at this time matched the large endorheic basins on the Puna, which host ephemeral lakes and terminal fans, indicating these were actively supplying dust to the airstream. After 2600 cal. yr BP, SASM activity increased while dust flux decreased and the dust chemistry changed, collectively implying the shutting down of the Puna-Altiplano as a significant dust source. Dust flux increased after 1000 cal. yr BP during the ‘Medieval Warm Period’, associated with a return to drier conditions and reactivation of dust sources across the endorheic basins of the Puna. Natural variability in dust flux was dwarfed, however, by the very significant increase in flux after 400 cal. yr BP following Spanish Colonisation and associated changing landuse practices. This finding attests to the globally significant role of humans on dust emissions.


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