Dating of the late Quaternary high lake levels in the Jilantai area, northwestern China, using optical luminescence of quartz and K-feldspar

2021 ◽  
pp. 105024
Author(s):  
Yuxin Fan ◽  
Zhenjun Li ◽  
Qingsong Cai ◽  
Guangliang Yang ◽  
Qingsong Zhang ◽  
...  
Keyword(s):  
Late Quaternary ◽  
Northwestern China ◽  
Lake Levels ◽  
Optical Luminescence ◽  
High Lake Levels

Sedimentary evidence and luminescence and ESR dating of Early Pleistocene high lake levels of Megalake Tengger, northwestern China

2020 ◽  
Vol 35 (8) ◽  
pp. 994-1006
Author(s):  
Fan Yuxin ◽  
Li Zhenjun ◽  
Yang Guangliang ◽  
Yi Shuangwen ◽  
Zhang Qingsong ◽  
...  
Keyword(s):  
Northwestern China ◽  
Early Pleistocene ◽  
Esr Dating ◽  
Lake Levels ◽  
High Lake Levels

scholarly journals High lake levels on Alxa Plateau during the Late Quaternary

2011 ◽  
Vol 56 (17) ◽  
pp. 1799-1808 ◽  
Author(s):  
NaiAng Wang ◽  
ZhuoLun Li ◽  
HongYi Cheng ◽  
Yu Li ◽  
YinZhou Huang
Keyword(s):  
Late Quaternary ◽  
Lake Levels ◽  
Alxa Plateau ◽  
High Lake Levels

Age, Palaeoenvironments, and Climatic Significance of Late Pleistocene Konya Lake, Turkey

1983 ◽  
Vol 19 (2) ◽  
pp. 154-171 ◽  
Author(s):  
Neil Roberts
Keyword(s):  
Late Quaternary ◽  
Climatic Conditions ◽  
Lake Levels ◽  
Recent Period ◽  
Sedimentary Process ◽  
Anatolian Plateau ◽  
High Lake Levels ◽  
Temperature Depression ◽  
Konya Basin ◽  
The Last Glacial

AbstractThe Konya Basin, a closed depression at the southern margin of the Anatolian Plateau, contained a shallow but extensive lake during the late Quaternary. Nearshore sands and gravels containing Dreissena shells form prominent depositional terraces around the basin edges at elevations between 1005 and 1020 m, and the highest has been dated at more than 30,000 yr B.P. The last major phase of limnic sedimentation occurred between 23,000 and 17,000 yr B.P., after which the lake fragmented into a number of subbasins or secondary depressions which evolved to become either marshes or playas. A final expansion of these residual lakes has been dated to ca. 11,000 yr B.P. in one secondary depression. Archaeological and other evidence indicate that only minor lake-level fluctuations occurred during the Holocene. The dominant sedimentary process over the last 10,000 years has been alluviation at the basin margin. The Konya sequence confirms that the most recent period of high-lake levels in the northern Near East was of the last glacial age. The palaeolakes of Anatolia and Iran were, however, more a product of reduced evaporation brought about by temperature depression than of changes in precipitation, and thus belie their often-used description as an indicator of “pluvial” climatic conditions.

scholarly journals Glacial and lake fluctuations in the area of the west Kunlun mountains during the last 45 000 years

1992 ◽  
Vol 16 ◽  
pp. 79-84 ◽  
Author(s):  
Liu Chaohai ◽  
Li Shijie ◽  
Shi Yafeng
Keyword(s):  
Lacustrine Sediments ◽  
Southern Slope ◽  
Lake Levels ◽  
Humid Climate ◽  
The West ◽  
Kunlun Mountains ◽  
West Kunlun ◽  
High Lake Levels ◽  
The Last Glacial Maximum ◽  
The Last Glacial

There appear to have been several important glacial advances on the southern slope of the west Kunlun mountains, Tibetan Plateau, since 45 000 a BP. Based on the record of alternating till and lacustrine sediments and 14C determinations, these advances are dated to 23 000–16 000, 8500–8000, and 4000–2500 a BP, and to the 16th–19th century AD, with regional variations occurring during each of the advances. The glaciation of 23 000–16 000 a BP is equivalent to the last glacial maximum (LGM) and its scope and scale were much larger than any of the others. Lake changes are a response to both tectonic uplift of the plateau and global climatic change. With regard to the latter, both changes in precipitation and changes in the extent of glaciation can affect lake levels. High lake levels occurred during interstadial conditions between 40 000 and 30 000 a BP, when the area experienced a relatively warm and humid climate, and during the LGM, between 21 000 and 15 000 a BP. During the Holocene, lakes have been shrinking gradually, coincident with the dry climate of this period of time.

scholarly journals Glacial and lake fluctuations in the area of the west Kunlun mountains during the last 45 000 years

1992 ◽  
Vol 16 ◽  
pp. 79-84 ◽  
Author(s):  
Liu Chaohai ◽  
Li Shijie ◽  
Shi Yafeng
Keyword(s):  
Lacustrine Sediments ◽  
Southern Slope ◽  
Lake Levels ◽  
Humid Climate ◽  
The West ◽  
Kunlun Mountains ◽  
West Kunlun ◽  
High Lake Levels ◽  
The Last Glacial Maximum ◽  
The Last Glacial

There appear to have been several important glacial advances on the southern slope of the west Kunlun mountains, Tibetan Plateau, since 45 000 a BP. Based on the record of alternating till and lacustrine sediments and 14C determinations, these advances are dated to 23 000–16 000, 8500–8000, and 4000–2500 a BP, and to the 16th–19th century AD, with regional variations occurring during each of the advances. The glaciation of 23 000–16 000 a BP is equivalent to the last glacial maximum (LGM) and its scope and scale were much larger than any of the others.Lake changes are a response to both tectonic uplift of the plateau and global climatic change. With regard to the latter, both changes in precipitation and changes in the extent of glaciation can affect lake levels. High lake levels occurred during interstadial conditions between 40 000 and 30 000 a BP, when the area experienced a relatively warm and humid climate, and during the LGM, between 21 000 and 15 000 a BP. During the Holocene, lakes have been shrinking gradually, coincident with the dry climate of this period of time.

Global Maps of Lake-Level Fluctuations since 30,000 yr B.P.

1979 ◽  
Vol 12 (1) ◽  
pp. 83-118 ◽  
Author(s):  
F. Alayne Street ◽  
A. T. Grove
Keyword(s):  
Lake Level ◽  
Ice Sheets ◽  
Literature Survey ◽  
Sea Surface ◽  
Lake Levels ◽  
Lake Level Fluctuations ◽  
Average Abundance ◽  
The Tropics ◽  
High Lake Levels ◽  
Precipitation And Temperature

This paper presents selected world maps of lake-level fluctuations since 30,000 yr B.P. These are based on a literature survey of 141 lake basins with radiocarbon-dated chronologies. The resulting patterns are subcontinental in scale and show orderly variations in space and time. They reflect substantial changes in continental precipitation, evaporation, and runoff, which are due to glacial/interglacial fluctuations in the atmospheric and oceanic circulations. In the tropics, high lake levels are essentially an interglacial or interstadial phenomenon, although there are important exceptions. Since extensive lakes during the Holocene corresponded with relatively high sea-surface temperatures, and therefore presumably with high evaporation rates on land, they are interpreted as the result of higher precipitation. Tropical aridity culminated in most areas at, or just after, the glacial maximum, although the present day is also characterized by a below-average abundance of surface water. In extratropical regions the mapped patterns are more complex. They vary markedly with latitude and proximity to major ice sheets. In these areas, evidence is at present insufficient to evaluate the relative contributions of precipitation and temperature to the observed lake-level record.

U-series chronology of sediments associated with Late Quaternary fluctuations, Balikun Lake, northwestern China

2004 ◽  
Vol 121 (1) ◽  
pp. 89-98 ◽  
Author(s):  
Zhibang Ma ◽  
Zhenhai Wang ◽  
Jiaqi Liu ◽  
Baoyin Yuan ◽  
Jule Xiao ◽  
...  
Keyword(s):  
Late Quaternary ◽  
Northwestern China

Holocene Fluctuations of a Meromictic Lake in Southern British Columbia

1997 ◽  
Vol 48 (1) ◽  
pp. 100-113 ◽  
Author(s):  
David J. Lowe ◽  
John D. Green ◽  
Tom G. Northcote ◽  
Ken J. Hall
Keyword(s):  
Saline Lake ◽  
Basal Layer ◽  
Climatic Changes ◽  
Depositional Environments ◽  
Laminated Sediments ◽  
Lake Depth ◽  
Lake Levels ◽  
Short Term ◽  
Northwestern North America ◽  
High Lake Levels

Holocene deposits of Mahoney Lake, a meromictic saline lake located in a closed basin in the semi-arid Okanagan Valley, contain evidence of frequent and marked changes in lake depth (up to >12 m/10014C yr) probably caused by short-term changes in effective precipitation. We studied a 5.45-m-long core comprising a basal layer of inorganic mud overlain by a succession of layers of calcareous laminated and nonlaminated organic mud, marl, and sand. We used Mazama tephra to adjust nine radiocarbon ages for the hardwater effect. Meromixis developed ca. 900014C yr B.P., and the lake has been episodically meromictic for about half the time since. Because of close linkages between sediments and depositional environments in meromictic and saline lakes, we infer that laminated sediments indicate meromictic conditions and high lake levels (>ca. 12 m water depth), whereas thick marl layers and nonlaminated sediments indicate nonmeromictic conditions and thus low lake levels (<ca. 8 m depth). Many of the inferred short-term climatic changes have not been identified in previous studies in northwestern North America, perhaps because of insensitive climatic proxies, inadequate temporal resolution, or discounting of anomalous findings.

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