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Grain size record from Zhaojiachuan profile over the past 7Ma in Qingyang, Gansu
CTR :214
Key words Zhaojiachuan profile in Gansu province, grain size, over the past 7Ma
Relevant data Sun Youbin& An Zhisheng. Variation of the East Asian Winter Monsoon Recorded by Chinese Loess during the Last Four Glacial-Interglacial Cycles.
Data shows that
samples were taken from 152~234.2m and interval is 20cm. Sample preparation:1) about 1.5g of soil sample was treated with 10ml 10 %H2O2 ;2) boiled with 10ml 10% HCL;3) the samples were rinsed with distilled water;4) the samples were evenly messed with 10ml 0.05N Na2P2O7 . grain size were measured with ANALYSETTE-22 LASER PARTICLE SIZE ANALYZER with a precision of ±2%.
Data collection format xls
Data classification Geological record - Terrestrial environmental records
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