OSL dating and magnetic susceptibility dataset of the XLX section in the upper of the Lancang River

The OSL dating data and magnetic susceptibility data of XLX profile were collected in the upper reaches of the Lancang River at geographical coordinates of 96 ° 33 ′ 40.662 ″ E and 32 ° 37 ′ 47.73 ″ N. A total of 25 OSL dating samples and 230 environmental bulk samples were collected for magnetic susceptibility determination. In the OSL era, sample pretreatment was carried out in the Luminescence Chronology Laboratory of the Key Laboratory of Natural Geography and Environmental Processes in Qinghai Province. The single angular regenerative dose protocol (SAR) was used to regenerate coarse particles (63-90 μ m) of quartz, and the equivalent dose (De) was measured using a Ris ø TL/OSL-DA-20-C/D thermal/photoluminescence instrument. 18 samples were measured for each sample and the weighted average De value was calculated. At the Xi'an Geological Survey Center, inductively coupled plasma mass spectrometry (iCAP RQ type) and full spectrum direct reading plasma spectroscopy (iCAP7400 type) were used to obtain the content of uranium, thorium, and potassium. At the same time, the dose rate contribution of cosmic rays was calculated based on the sample's water content, geographic latitude and longitude, altitude, burial depth, etc. Finally, the environmental dose rate of the sample was obtained. The equivalent dose (De) divided by the environmental dose rate gave the burial age of the sample (Age=De/Dose rate). The determination of magnetic susceptibility is carried out using the MS2 magnetic susceptibility measuring instrument produced by the British company Bartington. There are errors in the dataset, and the error of OSL age is presented in the table of the data. The calculation of the error of magnetic susceptibility is that each sample is repeatedly measured 3 times, and the relative standard deviation is less than 5% The table of magnetic susceptibility records the depth, the empty weight of the box used to measure the magnetic susceptibility, the total weight of the sample box and the sample, the mass of the sample, the three times of testing without placing the sample in the empty test, and the test results with the sample placed in it: empty test LF1, empty test LF2, empty test LF3, and the final calculated value of low-frequency magnetic susceptibility The chronology table provides the environmental dose rate, moisture content, and equivalent dose (De), as well as the final calculated chronology results