Results 61 to 70 of about 4,284 (229)

A reappraisal of the Middle to Later Stone Age prehistory of Morocco Réévaluer la préhistoire du Maroc, du Middle Stone Age au Later Stone Age

open access: yesJournal of the Royal Anthropological Institute, EarlyView.
Over the last 25 years, perceptions of the early prehistory of Northwest Africa have undergone radical changes due to new fieldwork projects and a corresponding growth in scientific interest in the region. Much of this work has been focused in Morocco, known for its extremely rich fossil and archaeological records in caves and rock shelters.
Nick Barton   +3 more
wiley   +1 more source

OSL dating as an alternative tool for age determination of relic charcoal kilns

open access: yes, 2023
Chronometric studies of charcoal production remains are largely based on 14C dating of associated charcoal. Owing to intrinsic limitations, however, this method provides no meaningful time-resolution for post-1650 CE features.
Biernacka, PaulinaLW02WE060001813141178020031599130000-0001-5274-315462F83698-D647-11E8-A24D-D54F5707D3EF   +6 more
core   +2 more sources

Luminescence dating method for unearthed celadon glazed porcelain piece

open access: yesHe jishu
BackgroundCultural relics are precious and nonrenewable resources. Scientific dating is the key to research on cultural relics, and luminescence technology is an important method for dating ceramic cultural relics.
YANG Hongyu, ZHAO Hui
doaj   +1 more source

OSL-SAR dating of sediments from Brazilian aeolian system: Dama Branca, Rio de Janeiro, morphodynamic study

open access: yesBrazilian Journal of Radiation Sciences, 2019
It has been reported that the formation and stabilization of coastal dune fields in Brazil have a dependence on the climatic changes, Relative Sea Level (RSL) variations, etc.
Lucas Sátiro do Carmo
doaj   +1 more source

Platinum and microspherule peaks as chronostratigraphic markers for onset of the Younger Dryas at Wakulla Springs, Florida

open access: yesScientific Reports, 2023
Anomalous peak abundances of platinum and Fe-rich microspherules with high-temperature minerals have previously been demonstrated to be a chronostratigraphic marker for the lower Younger Dryas Boundary (YDB) dating to 12.8 ka.
Christopher R. Moore   +9 more
doaj   +1 more source

Radiocarbon and Luminescence Dating of Lacustrine Sediments in Zhari Namco, Southern Tibetan Plateau

open access: yesFrontiers in Earth Science, 2021
There are more than 1,000 lakes within the Tibetan Plateau (TP), all of which are sensitive to changes in regional climate and local hydrology. Lacustrine sediments within these lakes preserve a good record of these changes.
Lu Cong   +7 more
doaj   +1 more source

Safelight for OSL dating laboratories: a follow-up study

open access: yesAncient TL, 2021
We introduce a new lamp for use in optically stimulated luminescence (OSL) dating laboratories. The lamp is based on an LED with the peak emission wavelength at 594 nm that was previously characterised as safe for both samples and operators by Sohbati et al. (2017). We demonstrate that 48 h exposure to this lamp, delivering a power density of 0.2 µW.cm-
R. Sohbati   +3 more
openaire   +1 more source

A Nationwide Assessment of Anticholestatic Therapy Uptake in Patients With Primary Biliary Cholangitis: Opportunities for Optimisation

open access: yesAlimentary Pharmacology &Therapeutics, EarlyView.
Among a nationwide population with primary biliary cholangitis, almost all people were prescribed ursodeoxycholic acid (UDCA). However, UDCA was insufficiently dosed in a one third of them. The results indicate that first‐line treatment can be optimized, particularly in those with a biochemical response and higher body weight.
Ellen Werner   +116 more
wiley   +1 more source

Soil wetting and drying processes influence stone artefact distribution in clay‐rich soils: A case study from Middle Gidley Island in Murujuga, northwest Western Australia

open access: yesArchaeometry, EarlyView.
Abstract Soils that contain swelling clay minerals (e.g., montmorillonite) expand and contract during wetting and drying, causing movement within the soil profile. This process, known as argilliturbation, can alter artefact distributions, destroy stratigraphy and complicate the interpretation of archaeological deposits.
Caroline Mather   +11 more
wiley   +1 more source

A Third Neanderthal Individual from La Ferrassie Dated to the End of the Middle Palaeolithic

open access: yesPaleoAnthropology, 2023
The Palaeolithic site of La Ferrassie (SW France) has been extensively studied since its discovery during the 19th century. In addition to a large sequence including Middle and Upper Paleolithic layers, the site has yielded two very complete adult ...
Guillaume Guérin   +13 more
doaj   +1 more source

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