库姆塔格沙漠南北两侧中砂至粗粉砂矿物特征及其物源指示
金秉福, 于健, 吴波, 张云吉, 哈斯额尔敦, 苏志珠, 孔德庸, 韩旭娇

Mineral characteristics and provenance indicators of medium to coarse silt from the northern and southern regions of the Kumtagh Desert
Bingfu Jin, Jian Yu, Bo Wu, Yunji Zhang, Eerdun Hasi, Zhizhu Su, Deyong Kong, Xujiao Han
表3 库姆塔格沙漠主要轻矿物的粒级平均体积百分含量和矿物指数
Table 3 Average v% content of particle size and mineral index of major light minerals in the Kumtagh Desert
样品(样数)鉴定粒级

石英

/%

斜长石

/%

钾长石

/%

方解石

/%

白云石

/%

常见轻矿物

合计/%

轻岩屑

/%

Q/FQ/(F+L)
阿奇克谷地 南缘阶地+ 台地表层 /次表层 (n=24)1~2 Φ34.9822.9516.830.130.2975.1824.830.880.54
2~3 Φ38.0924.0918.350.440.4481.4118.570.900.62
3~4 Φ47.5219.6914.724.511.5888.0211.841.381.03
4~5 Φ47.8620.2011.029.873.9392.886.341.531.27
加权平均值42.6621.0616.931.931.2383.8116.481.180.83
羽毛状沙丘 20YQ (n=18)1~2 Φ30.2224.2114.160.010.0468.6431.360.790.43
2~3 Φ40.9324.8817.110.580.3083.8016.150.970.70
3~4 Φ46.6223.0713.294.690.7888.4511.451.280.98
4~5 Φ48.3422.1710.448.881.8591.687.851.481.19
加权平均值38.5724.2714.811.610.3579.6120.341.000.69
南缘沙丘 Q2+Q3 (n=9)1~2 Φ17.4923.8715.511.300.6958.8641.120.440.22
2~3 Φ28.4926.2219.250.720.5575.2324.770.630.41
3~4 Φ46.6719.4213.324.361.2184.9815.021.430.98
4~5 Φ51.2421.947.078.301.9790.528.901.771.35
加权平均值32.6124.1317.131.890.8076.5623.430.850.56
沙漠南缘冲 洪积物 (n=3)1~2 Φ14.2425.049.051.222.4451.9948.010.430.17
2~3 Φ26.5028.2710.962.412.0070.1429.770.680.40
3~4 Φ49.4618.5311.734.082.5886.3813.551.641.13
4~5 Φ49.3521.347.3310.702.7991.517.561.751.36
加权平均值33.9023.1010.963.032.4273.4126.511.060.69