Geomorphic and chronometric evidence for high lake level history in Gahai Lake and Toson Lake of north-eastern Qaidam Basin, north-eastern Qinghai-Tibetan Plateau

2012 ◽  
Vol 27 (8) ◽  
pp. 819-827 ◽  
Author(s):  
Qishun Fan ◽  
Haizhou Ma ◽  
Guangchao Cao ◽  
Zongyan Chen ◽  
Shengkui Cao



The Holocene ◽  
2020 ◽  
Vol 30 (12) ◽  
pp. 1741-1751 ◽  
Author(s):  
Feng Chen ◽  
Jin-Liang Feng ◽  
Hai-Ping Hu ◽  
Ping Wang

Palaeohydrochemical and palaeohydrological changes of lakes have seldom been reconstructed from the fossil shells of the gasropod Radix auricularia, which is a new, and potentially high-resolution environnmental archive. We conducted a geochemical and stable isotope study of the shells of Radix from the exposed fluvio-lacustrine sediments near Lake Yamdrok Yumtso in the southern Tibetan Plateau. Our aims were to determine the sedimentary environment, palaeo-lake hydrochemistry and hydrological status. AMS 14C and OSL dating indicates that a lake-level stage of Yamdrok Yumtso higher than that of today occurred during ~4.7–1.2 cal. kyr BP. Results of Sr/Ca, δ13C and δ18O analysis of the fossil shells of Radix auricularia indicate that the lake-level fluctuations were mainly controlled by changes of the Indian Summer Monsoon; decreasing evaporation during the mid- to late-Holocene was also responsible. In addition, based on the geochemical relationship between Radix sp. shells and the ambient water in lakes, the values of δ18OPalaeo-water and Sr/CaPalaeo-water reconstructed using the fossil shells of Radix auricularia are −8.2‰ to −5.1‰ and 0.0012 to 0.0057, respectively. Further, based on the values of δ18Oshell, together with geomorphological evidence, we infer that Yamdrok Yumtso was a closed lake system, and we estimate its possible extent during the interval of high lake-level. In addition, we speculate that the water level of Yamdrok Yumtso at this time exceeded 4448.9 m a.s.l., but was less than 4451 m a.s.l., and that the major separation of various components of the Yamdrok Yumtso system occurred after 1.2 kyr BP.



2013 ◽  
Vol 39 (6) ◽  
pp. 779-789 ◽  
Author(s):  
Wenxia Han ◽  
Zhibang Ma ◽  
Zhongping Lai ◽  
Erwin Appel ◽  
Xiaomin Fang ◽  
...  


2015 ◽  
Vol 30 (3) ◽  
pp. 245-257 ◽  
Author(s):  
XIANG-JUN LIU ◽  
ZHONGPING LAI ◽  
DAVID MADSEN ◽  
FANGMING ZENG


The Holocene ◽  
2015 ◽  
Vol 26 (2) ◽  
pp. 176-187 ◽  
Author(s):  
Marieke Ahlborn ◽  
Torsten Haberzettl ◽  
Junbo Wang ◽  
Sascha Fürstenberg ◽  
Roland Mäusbacher ◽  
...  








Sign in / Sign up

Export Citation Format

Share Document