Results 151 to 160 of about 112,190 (278)
Estudios Atacameños, 2002 Choya 68 es un sitio ceremonial, con una estructura monticular y en sus adyacencias amplias superficies preparadas y estructuras de paredes de piedra cuadrangulares y rectangulares.
Marta Baldini +8 more
doaj
Late Holocene moisture variability in Arctic Alaska from chitin δ18O
Boreas, EarlyView.Amplified warming in the Arctic has resulted in reduced sea‐ice extent, which can impact regional climate dynamics. Elucidating past moisture variability in response to changing temperatures and sea‐ice conditions can offer insight into how anthropogenic climate change may impact Arctic areas such as the Alaskan North Slope in the future. We contribute
Briana A. Edgerton, Melissa L. Chipman
wiley +1 more source
Boreas, EarlyView.The relationship between the climate and societal transformation in Maya lowlands has long been debated, particularly the role of drought in shaping the civilization trajectory during the Classic Period. A high‐resolution, multi‐proxy, geochemical record from Lake Kaná, located in the underexplored Uaymil region of the Yucatán Peninsula in Mexico ...
Haydar B. Martinez‐Dyrzo +5 more
wiley +1 more source
An Early Ceramic Period Pit Feature at the Swan Lake Site (16BO11), Bossier Parish, Lousiana [PDF]
, 1995 A pit feature containing Tchefuncte-like pottery, a Gary point, and fauna) remains recently was investigated at the Swan Lake Site (168011) located near Willow Chute Bayou in the Red River floodplain of eastern Bossier Parish. Three charcoal samples from
Girard, Jeffery S.
core +1 more source
Boreas, EarlyView.Map of Lower sediment (LS) thickness is a surrogate for the distribution of Thorncliffe Formation (TF) and ~75% of TF thickness from the slope of Niagara Escarpment east to Brighton. Inset images show the LS sequence at the Don Valleys brickyards (DVBY) and undeformed TF sand and gravel (~15 m) below Newmarket Till (NT) at sites L and Co.
David R. Sharpe +3 more
wiley +1 more source
Поволжская археология, 2016 International Theoretical and Practical Workshop on Application of Paleo-Ecological Methods in Archaeology took place in Bolgar International Center for Archaeological Studies from 9 to 19 August 2016.
Sitdikov Airat G. +3 more
doaj
A Probable Approx. 2400 Year Solar Quasi-cycle in Atmospheric Delta C-14 [PDF]
, 1990 A 2200 to 2600 year quasi-periodicity is present in atmospheric delta C-14 records after removal of long-term trends due to the geomagnetic dipole amplitude variation.
Hood, L. L., Jirikowic, J. L.
core +1 more source
Luminescence dating of coastal deposits from the Chanthaburi Plain, Thailand
Boreas, EarlyView.The ongoing global sea‐level rise urges us to better understand the dynamics of coastal processes for predicting future changes. Sedimentary deposits reflect past coastal environments but require precise chronological data to place evidence into a temporal context.
Margarita Nuss +6 more
wiley +1 more source
Fish and Fisheries, EarlyView.ABSTRACT Technological innovations for predicting fish age represent a paradigm shift from conventional age estimation methods used in fisheries science. Recently developed secondary methods rely on models trained on conventional age estimates, derived from subjective interpretation of growth patterns and a biological property of the fish to predict ...
Derek W. Chamberlin +11 more
wiley +1 more source
Groundwater, EarlyView.Marine electrical resistivity tomography (ERT) is applied to characterize point‐source submarine groundwater discharge (PSGD) along NW Yucatán. ERT observations and forward modeling constrain conduit detectability under varying hydrogeological conditions.
Mariana Gómez‐Nicolás +6 more
wiley +1 more source