[meteorite-list] Lago Strobel and fractal craters on 1 km el balsitic plateau, Argentina, full text of 2009 research on Holocene water levels and prehistoric culture: Cox: Barron: Murray 2011.07.21

From: Rich Murray <rmforall_at_meteoritecentral.com>
Date: Wed, 20 Jul 2011 23:33:47 -0700
Message-ID: <CAHqJ8pYGYWKcZ9TU7Dsmz_p0HpKwSG+g6np+nGn1vkMZ3zB1WQ_at_mail.gmail.com>

Lago Strobel and fractal craters on 1 km el balsitic plateau,
Argentina, full text of 2009 research on Holocene water levels and
prehistoric culture: Rich Murray 2011.07.21

Lago Strobel, Argentina
-48.439649 -71.158664 .722 km el 10 km size

many ground views on Google Earth

http://www.climategeology.ethz.ch/publications/2010_Ariztegui_et_al_JQS.pdf

Lake-level changes in central Patagonia (Argentina): crossing
environmental thresholds for Lateglacial and Holocene human occupation
DANIEL ARIZTEGUI, 1 *
ADRIAN GILLI, 2
FLAVIO S. ANSELMETTI, 3
RAFAEL A. GON? I, 4
JUAN B. BELARDI 5
and SILVANA ESPINOSA 5
1 Section of Earth and Environmental Sciences, University of Geneva,
Geneva, Switzerland
2 Geological Institute, ETH Zu? rich, Zu? rich, Switzerland
3 Eawag, Swiss Federal Institute of Aquatic Science and Technology,
Duebendorf, Switzerland
4 Instituto Nacional de Antropolog??a y Pensamiento Latinoamericano,
Universidad de Buenos Aires, UNCPBA, Buenos Aires, Argentina
5 CONICET/Universidad Nacional de la Patagonia Austral, R??o Gallegos,
Santa Cruz, Argentina
Ariztegui, D., Gilli, A., Anselmetti, F. S., Gon? i, R. A., Belardi,
J. B. and Espinosa, S. 2010.
Lake-level changes in central Patagonia (Argentina): crossing
environmental thresholds for Lateglacial and Holocene human
occupation.
J. Quaternary Sci., Vol. 25 pp. 1092?1099. ISSN 0267-8179.
Received 30 May 2008; Revised 18 September 2009; Accepted 22 September 2009

ABSTRACT:
The role and extent of climate as a cause of the expansion and decline
of human cultures is still debatable.
It is clear, however, that human?environment interactions are enhanced
and interplay more closely in climatically sensitive areas such as
around hydrologically closed basins.
Lago Cardiel is located at 498 S in the very arid rain shadow east of
the Andes, providing an exceptionally receptive system to changes in
hydrological balance.
Results of a geophysical survey combined with sedimentological and
geochemical studies provide a continuous Lateglacia-?Holocene record
of substantial water-level changes.
These variations, combined with archaeological results from the
catchment area, offer a unique possibility to explore the pattern of
peopling within this remote area of the globe and its possible
relation to climate change.
Human occupation in Patagonia is well documented towards the Andes
throughout the entire Holocene.
Archaeological data from the Lago Cardiel basin, however, show an
apparent lack of human activity during the ?rst part of this period,
which coincides with well-constrained high lake levels.
Our results show an intriguing coincidence between low lake level and
increasing human occupation, suggesting that the Lago Cardiel basin
has
focused human use during intervals with relatively lower effective
moisture such as during the Late Pleistocene, but its evidence may
have been submerged.
This interpretation is con?rmed by archaeological remains from Lago
Strobel, another perennial lake with a comparable catchment located in
the same climatic region and thus sharing the same climatic history as
Lago Cardiel.
Copyright # 2009
John Wiley & Sons, Ltd.
KEYWORDS: eastern Patagonia; Late Pleistocene; Holocene; archaeology;
limnogeology; human occupation.
[ free full text ]
Received on Thu 21 Jul 2011 02:33:47 AM PDT