Luminescence dating of Nuomuhong culture ceramics at Talitaliha site on the Northeastern Qinghai-Tibetan Plateau

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Manping Sun ◽  
Yongjuan Sun ◽  
Chongyi E ◽  
Guangliang Hou ◽  
Jing Zhang ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Direct Evidence ◽  
Qaidam Basin ◽  
Archaeological Site ◽  
Luminescence Dating ◽  
Archaeological Research ◽  
Cultural Layer ◽  
Age Range ◽  
Lower Limits ◽  
Good Agreement

Abstract As a daily utensil and artefact, the presence of ceramic at an archaeological site is direct evidence of human activity. While ceramics have been found at numerous sites on the Qinghai-Tibetan Plateau (QTP), most have been aged using conventional methods such as typology or radiocarbon dating of associated charcoal and bone. In this study, five sand-tempered grey ceramics from Talitaliha in the Qaidam Basin were dated using quartz and K-feldspar OSL. The reliability of the ceramic OSL ages was determined using six independent radiocarbon samples, three charcoal and three bone, from the same cultural layer. Six additional OSL ages were determined on sandy loess sediments at the Talitaliha site to provide upper and lower limits for the ceramic ages. The ceramic luminescence dating results are in good agreement with the 14C ages and are within the constraints of the stratigraphic OSL ages, suggesting that OSL dating of ceramics has great potential for archaeological research on the QTP. The determined age range for the Talitaliha site was between 3400–2800 cal BP; this fits well with Nuomuhong culture dates from other locations in the Qaidam Basin that range between 3400–2450 cal BP.

OSL chronology for lacustrine sediments recording high stands of Gahai Lake in Qaidam Basin, northeastern Qinghai–Tibetan Plateau

2010 ◽  
Vol 5 (2-3) ◽  
pp. 223-227 ◽  
Author(s):  
QiShun Fan ◽  
ZhongPing Lai ◽  
Hao Long ◽  
YongJuan Sun ◽  
XiangJun Liu
Keyword(s):  
Tibetan Plateau ◽  
Qaidam Basin ◽  
Lacustrine Sediments

Paleolake salinity evolution in the Qaidam Basin (NE Tibetan Plateau) between ~42 and 29 Ma: Links to global cooling and Paratethys sea incursions

2021 ◽  
Author(s):  
Chengcheng Ye ◽  
Yibo Yang ◽  
Xiaomin Fang ◽  
Weilin Zhang ◽  
Chunhui Song ◽  
...  
Keyword(s):  
Climate Change ◽  
Tibetan Plateau ◽  
Middle Eocene ◽  
Qaidam Basin ◽  
Regional Climate ◽  
Regional Climate Change ◽  
Driving Mechanism ◽  
The Tibetan Plateau ◽  
Early Oligocene ◽  
Global Cooling

<p>Global cooling, the early uplift of the Tibetan Plateau, and the retreat of the Paratethys are three main factors that regulate long-term climate change in the Asian interior during the Cenozoic. However, the debated elevation history of the Tibetan Plateau and the overlapping climate effects of the Tibetan Plateau uplift and Paratethys retreat makes it difficult to assess the driving mechanism on regional climate change in a particular period. Some recent progress suggests that precisely dated Paratethys transgression/regression cycles appear to have fluctuated over broad regions with low relief in the northern Tibetan Plateau in the middle Eocene–early Oligocene, when the global climate was characterized by generally continuous cooling followed by the rapid Eocene–Oligocene climate transition (EOT). Therefore, a middle Eocene–early Oligocene record from the Asian interior with unambiguous paleoclimatic implications offers an opportunity to distinguish between the climatic effects of the Paratethys retreat and those of global cooling.</p><p>Here, we present a complete paleolake salinity record from middle Eocene to early Miocene (~42-29 Ma) in the Qaidam Basin using detailed clay boron content and clay mineralogical investigations. Two independent paleosalimeters, equivalent boron and Couch’s salinity, collectively present a three-staged salinity evolution, from an oligohaline–mesohaline environment in the middle Eocene (42-~34 Ma) to a mesosaline environment in late Eocene-early Oligocene (~34-~29 Ma). This clay boron-derived salinity evolution is further supported by the published chloride-based and ostracod-based paleosalinity estimates in the Qaidam Basin. Our quantitative paleolake reconstruction between ~42 and 29 Ma in the Qaidam Basin resembles the hydroclimate change in the neighboring Xining Basin, of which both present good agreement with changes of marine benthic oxygen isotope compositions. We thus speculated that the secular trend of clay boron-derived paleolake salinity in ~42-29 Ma is primarily controlled by global cooling, which regulates regional climate change by influencing the evaporation capacity in the moisture source of Qaidam Basin. Superimposed on this trend, the Paratethys transgression/regression cycles served as an important factor regulating wet/dry fluctuations in the Asian interior between ~42 and ~34 Ma.</p>

scholarly journals ROCK MAGNETIC AND PALAEOMAGNETIC ANALYSES ON LITHIC FRAGMENTS FROM THE ARCHAEOLOGICAL SITE OF AKROTIRI, SANTORINI

2017 ◽  
Vol 50 (3) ◽  
pp. 1250
Author(s):  
E. Tema
Keyword(s):  
Principal Component Analysis ◽  
Deposition Temperature ◽  
Principal Component ◽  
Archaeological Site ◽  
Equilibrium Temperature ◽  
Component Analysis ◽  
Temperature Data ◽  
Minoan Eruption ◽  
Pumice Fall ◽  
Good Agreement

Rock magnetic and palaeomagnetic analyses on lithic clasts collected from the pumice fall deposited inside the archaeological site of Akrotiri have been applied in order to estimate the deposition temperature of the first volcanic products of the Minoan eruption. A total of 50 lithic clasts have been collected from four different locations inside the excavation of Akrotiri. All samples have been stepwise thermally demagnetized and the obtained results have been interpreted through principal component analysis. The equilibrium temperature obtained after the deposition of the pumice fall varies from sample to sample but generally shows temperatures around 240-280oC. These temperatures are in good agreement with those estimated from lithic clasts from the Megalochori Quarry while they are higher compared with those from ceramic fragments from Akrotiri. The new temperature data presented here show that the pumice fall was still relatively hot when deposited inside the archaeological site and even if it interacted with the buildings, often causing the collapse of roofs, it still remained hot with mean temperature around 260oC.

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