scholarly journals First archaeointensity reference paleosecular variation curve for South America and its implications for geomagnetism and archaeology – Corrigendum

2020 ◽  
Vol 98 ◽  
pp. 103-103
Author(s):  
Avto Goguitchaichvili ◽  
Catriel Greco ◽  
Rafael Garcia Ruiz ◽  
Lucas Pereyra Domingorena ◽  
Ruben Cejudo ◽  
...  
Keyword(s):  
South America ◽  
Paleosecular Variation ◽  
Variation Curve

First archaeointensity reference paleosecular variation curve for South America and its implications for geomagnetism and archaeology

2019 ◽  
Vol 92 (1) ◽  
pp. 81-97 ◽  
Author(s):  
Avto Goguitchaichvili ◽  
Catriel Greco ◽  
Rafael Garcia Ruiz ◽  
Lucas Pereyra Domingorena ◽  
Ruben Cejudo ◽  
...  
Keyword(s):  
South America ◽  
Absolute Intensity ◽  
Quality Parameters ◽  
Reference Curve ◽  
Paleosecular Variation ◽  
Variation Curve ◽  
Catamarca Province ◽  
Radiometric Ages ◽  
The Last Two Millennia ◽  
Good Agreement

AbstractWe report comprehensive rock-magnetic and archaeointensity investigations from 21 well-constrained pottery fragments from the Catamarca province of northwest Argentina. The absolute ages of the studied sites are ascertained by several high-quality radiometric ages and range between 1940 to 114014C yr BP. Magnetic mineralogy experiments indicates that the remanence is carried by thermally stable Ti-poor titanomagnetites. Forty-seven samples belonging to 11 out of 98 studied potsherds yielded reliable absolute intensity determinations judging from the quality parameters associated with the Thellier double-heating experiments. Moreover, we analyzed the available absolute geomagnetic intensities associated with the radiometric ages to construct the first intensity paleosecular variation curve (PSVC) for South America using thermoremanent magnetization carried by burned archaeological artifacts obtained in the present investigation and 79 other selected archaeointensities (out of 213 published in the literature). The dataset is used to build the PSVC reference curve by combined bootstrap and temporal P-spline methods. The variation curve shows significant differences with the global prediction model SHA.DIF.14k mainly based on the GEOMAGIA database. This intensity PSVC curve shows reasonably good agreement with paleosecular variation curves for Europe between 850 through 1150 BC and for Asia between 1000 and 1500 BC. This regional curve may be used as most reliable archaeomagnetic dating tool for the major part of South America (Peru, Brazil, Argentina, Chile, and Bolivia) for the last two millennia.

scholarly journals Updated Iberian Archeomagnetic Catalogue: New Full Vector Paleosecular Variation Curve for the Last Three Millennia

2018 ◽  
Vol 19 (10) ◽  
pp. 3637-3656 ◽  
Author(s):  
A. Molina-Cardín ◽  
S. A. Campuzano ◽  
M. L. Osete ◽  
M. Rivero-Montero ◽  
F. J. Pavón-Carrasco ◽  
...  
Keyword(s):  
Paleosecular Variation ◽  
Variation Curve ◽  
Full Vector

Animal taxa named for Rollo H. Beck

2014 ◽  
Vol 41 (1) ◽  
pp. 113-123 ◽  
Author(s):  
Gary M. Fellers
Keyword(s):  
Natural History ◽  
South America ◽  
Southern California ◽  
American Museum ◽  
Type Specimens ◽  
California Academy ◽  
Vertebrate Zoology ◽  
The Caribbean ◽  
Set Up ◽  
Academy Of Sciences

Rollo Howard Beck (1870–1950) was a professional bird collector who spent most of his career on expeditions to the Channel Islands off southern California, the Galápagos Islands, South America, the South Pacific, and the Caribbean. Some of the expeditions lasted as long as ten years during which time he and his wife, Ida, were often working in primitive conditions on sailing vessels or camps set up on shore. Throughout these expeditions, Beck collected specimens for the California Academy of Sciences, the Museum of Vertebrate Zoology at Berkeley (California), the American Museum of Natural History, and the Walter Rothschild Museum at Tring, England. Beck was one of the premier collectors of his time and his contributions were recognized by having 17 taxa named becki in his honor. Of these taxa, Beck collected 15 of the type specimens.

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