This data set is composed of two sedimentary profiles of Huangyang river a (altitude: 2447 m, depth: 3.20 m, 37 ° 25 ′ n 102 ° 36 ′ E) and B (altitude: 2454 m, depth: 3.20 m, 37 ° 25 ′ n 102 ° 36 ′ E). Both of them are located in the hilly area at the northern foot of Qilian Mountain, 1km apart. The annual precipitation here is about 500mm, and the annual average temperature is about 2 ℃. The interval between the two slices was 2 cm, and 160 samples were obtained from each slice to analyze the total organic carbon, carbonate content, particle size and other information. The data set is of great significance to the study of paleoclimate / paleoenvironment.
LI Yu
This data is the grain size data set of the XS loess section at Ganzi in the east of Qinghai Tibet Plateau. The whole section is 10 meters thick, and the grain size analysis is carried out according to the interval of 2.5cm. A total of 398 groups of grain size data are obtained. The grain size analysis was carried out at the Key Laboratory of Western China's Environmental Systems（Ministry of Education), Lanzhou University. Before the measurement, the organic matter and carbonate in the sample were removed by H2O2 and hydrochloric acid, then adding the sodium hexago-hydrophosphate and vibrating for about 10 min to disperse samples by using ultrasonic apparatus. All measurements are conducted by using the Mastersizer 2000. This data reflects variations of the loess grain size since the last interglacial, which is of great importance for understanding past evionroment changes in the eastern Tibet Plateau.
YANG Shengli
This magnetic susceptibility data set of the XS loess section at Ganzi in the eastern Tibet Plateau. We analyzed the magnetic susceptibility of the top part of the loess sequence at 5cm intervals, and obtained 200 sets of magnetic susceptibility data. The experimental analysis was completed in the Key Laboratory of Western China's Environmental Systems（Ministry of Education), Lanzhou University. Air-dried and grind the samples were put it into a non-magnetic cubic box, and measured by the British Bartington MS2. The result indicates the varations of the low frequency magnetic susceptibility of the Loess sequence since the Last Interglacial at Ganzi area, which is of great importance for understanding past environment changes in the eastern Tibet Plateau.
YANG Shengli
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