A comment on Lai et al. (2014) concerning the origin of the Shell Bar section from the Qaidam Basin, NE Tibetan Plateau: lake formation versus river channel deposit, and 14C versus OSL dates

2014 ◽  
Vol 53 (3) ◽  
pp. 321-334 ◽  
Author(s):  
Hucai Zhang
Keyword(s):  
Tibetan Plateau ◽  
Qaidam Basin ◽  
River Channel ◽  
Lake Formation ◽  
Plateau Lake ◽  
Channel Deposit ◽  
Ne Tibetan Plateau ◽  
Shell Bar Section ◽  
Shell Bar

scholarly journals AMS Dating on the Shell Bar Section from Qaidam Basin, Ne Tibetan Plateau, China

Radiocarbon ◽  
2008 ◽  
Vol 50 (2) ◽  
pp. 255-265 ◽  
Author(s):  
H C Zhang ◽  
H F Fan ◽  
F Q Chang ◽  
W X Zhang ◽  
G L Lei ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Organic Carbon ◽  
Stable Carbon Isotopes ◽  
Qaidam Basin ◽  
Sampling Site ◽  
Organic Carbon Content ◽  
Ams Dating ◽  
Ne Tibetan Plateau ◽  
Shell Bar Section ◽  
Shell Bar

Radiocarbon dating by accelerator mass spectrometry (AMS) of the shell bar section of Qaidam Basin, NE Tibetan Plateau, shows that this section was formed between ~39.7 and ~17.5 14C kyr BP and represented the highest paleolake development period since the Late Pleistocene. It was difficult to obtain reliable dates due to the low organic carbon content, which was formed mainly by authochtonous algae-bacteria (Zhang et al. 2007a). In order to improve the dating, 14C ages of both the alkali residual and acid-soluble components of the organic carbon were measured to check the consistency of the dating results. Total organic carbon (TOC) content and stable carbon isotopes (δ13Corg) might also be used as critical references for checking the reliability of dates. For example, in our study of the shell bar section from Qaidam Basin, we found that when the TOC content was higher than 0.15% and/or δ13Corg was lower than −23, the AMS dates were reliable. AMS dating of fossil shells demonstrated that they could provide valuable age information. The ages given by fossil shells are comparable to those of bulk carbonate from a similar sampling site, and are about 15~18 kyr older than the ages given by organic matter. Due to the U/Th dating requirements and open nature of the system, we concluded that U/Th dating results are unreliable and that this technique is unsuitable for dating halite deposits from Qaidam Basin.

Clay minerals and isotopes of Pleistocene lacustrine sediments from the western Qaidam Basin, NE Tibetan Plateau

2018 ◽  
Vol 162 ◽  
pp. 382-390 ◽  
Author(s):  
Minghui Li ◽  
Shurui Sun ◽  
Xiaomin Fang ◽  
Chunhong Wang ◽  
Zhengrong Wang ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Clay Minerals ◽  
Qaidam Basin ◽  
Lacustrine Sediments ◽  
Western Qaidam Basin ◽  
Ne Tibetan Plateau

The Qaidam Basin, NE Tibetan Plateau

2021 ◽  
pp. 71-110
Author(s):  
Long Xiao ◽  
Jiang Wang ◽  
Yanan Dang ◽  
Jiannan Zhao ◽  
Mingjie Zhang
Keyword(s):  
Tibetan Plateau ◽  
Qaidam Basin ◽  
Ne Tibetan Plateau

Geochemical behavior of rare elements in Paleogene saline lake sediments of the Qaidam Basin, NE Tibetan Plateau

2017 ◽  
Vol 34 (2) ◽  
pp. 359-372 ◽  
Author(s):  
Pei Guo ◽  
Chiyang Liu ◽  
Peng Wang ◽  
Ke Wang ◽  
Haili Yuan ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Lake Sediments ◽  
Saline Lake ◽  
Qaidam Basin ◽  
Geochemical Behavior ◽  
Rare Elements ◽  
Ne Tibetan Plateau

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

2020 ◽  
Vol 409 ◽  
pp. 105778 ◽  
Author(s):  
Chengcheng Ye ◽  
Yibo Yang ◽  
Xiaomin Fang ◽  
Weilin Zhang ◽  
Chunhui Song ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Qaidam Basin ◽  
Global Cooling ◽  
Ne Tibetan Plateau
Sign in / Sign up

Export Citation Format

Share Document