noaa-loess-15109
Weinan, China 140KYr Loess Physical Properties Data
Kang, S.G.; Wang, X.L.; Lu, Y.C.
Weinan, China 140KYr Loess Physical Properties Data
2013-09-25
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/15109
Investigator
S.G.
Kang
Investigator
X.L.
Wang
Investigator
Y.C.
Lu
earth science
paleoclimate
loess
depth,null,null,centimeter,null,loess,null,null,N,null
earth science
paleoclimate
loess
grain size mean,loess,null,micrometer,null,loess,null,null,N,null
earth science
paleoclimate
loess
age,null,null,calendar kiloyear before present,null,loess,null,null,N,null
earth science
paleoclimate
loess
mass magnetic susceptibility,loess,null,cubic meter per kilogram,null,loess,null,null,N,units are 10-8 m3 kg-1
earth science
paleoclimate
loess
density,loess,null,gram per cubic centimeter,null,loess,null,null,N,null
earth science
paleoclimate
loess
calcium carbonate,loess,null,percent,null,loess,null,null,N,null
earth science
paleoclimate
loess
geoscientificInformation
144900 cal yr BP
0 cal yr BP
Complete
34.4274
34.4274
109.5771
109.5771
660
660
Continent
Asia
Eastern Asia
China
Weinan>LATITUDE 34.4274>LONGITUDE 109.5771
None
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English
DOC/NOAA/NESDIS/NCEI
National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
https://www.ncdc.noaa.gov/data-access/paleoclimatology-data
DATA Center Contact
Bruce
Bauer
bruce.a.bauer@noaa.gov
paleo@noaa.gov
303-497-6280
303-497-6513
325 Broadway, E/NE31
Boulder
CO
80305-3328
USA
online
ASCII
Shugang Kang, Yanchou Lu, and Xulong Wang. 2011. Closely-spaced recuperated OSL dating of the last interglacial paleosol in the southeastern margin of the Chinese Loess Plateau. Quaternary Geochronology, Vol. 6, Issue 5, pp. 480-490. DOI: 10.1016/j.quageo.2011.04.004
Shugang Kang, Xulong Wang, and Yanchou Lu. 2013. Quartz OSL chronology and dust accumulation rate changes since the Last Glacial at Weinan on the southeastern Chinese Loess Plateau. Boreas, Vol. 42, Issue 4, pp. 815-829. DOI: 10.1111/bor.12005
The fine-grained (4-11 um) quartz Optically Stimulated Luminescence (OSL) dating technique was applied to the Weinan section on the southeastern Chinese Loess Plateau (CLP) with a high luminescence sampling resolution (10- and 20-cm intervals). Fifty-eight OSL ages, spanning c. 1-74 ka, were obtained for the 10-m loess-palaeosol sequences. The reliability of the OSL dating and the constructed chronology was confirmed by comparing the OSL ages with independent dates from other studies and by correlation with palaeoclimatic time series. The closely spaced OSL ages at Weinan indicate that the mean dust accumulation rate (DAR) of L1-1 (MIS 2, 7.0±0.9 cm ka-1) is lower than those of L1-3 (MIS 4, 19.1±6.1 cm ka-1) and L1-2 (MIS 3, 16.0±0.7 cm ka-1) and that the mean DAR c. 30-20 ka ago (11.4±2.4 cm ka-1) is higher than that c. 20-10 ka ago (3.0±0.1 cm ka-1) in L1-1. The subsequent calculation of the mass accumulation rate (MAR) indicates that the MAR of L1-1 (107 g m-2 a-1) is much lower than those of L1-2 (247 g m-2 a-1) and L1-3 (307 g m-2 a-1). By comparing the mean DAR results during the Last Glacial at Weinan with those at a further six sites from other studies, we observed that the mean DAR of L1-2 is higher (lower) than that of L1-1 on the eastern (western) CLP, and that the mean DAR during MIS 2 has an evident transition from high to low at c. 20 ka on the entire CLP. Possible mechanisms for the above mean DAR changes at orbital and sub-orbital time scales are presented.
STUDY NOTES: Physical properties data (magnetic susceptibility, mean grain size, carbonate content, bulk density)
from the Weinan section (34°25'38.8"N, 109°34'37.4"E, elevation 660 m a.s.l.) in the central part of a 'Yuan'
(stable loess tableland) at the southeastern margin of the Chinese Loess Plateau.
A 14-m pit along the outcrop, recently made by a brickyard, was excavated at the Weinan section. Powder samples
were collected at 2-cm intervals above the depth of 14.3 m for magnetic susceptibility and grain size analyses.
Luminescence samples were taken at 10-cm intervals above the depth of 1.4 m and at 20-cm intervals for the remainder.
A total of 76 luminescence samples were obtained for OSL and ReOSL dating, and all OSL and ReOSL dates except those
from the uppermost three samples were used for chronology construction using a five-point FFT smoothing method.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/loess/china/kang2011-2013weinan-carb-dens.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/loess/china/kang2011-2013weinan.xls
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/loess/china/kang2011-2013weinan-ms-gs.txt
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11