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["Supplementary Table S1. Summary of the details of sampling"]
["Sample No.","Formations",null,"Lithologies","Location",null,null,"Remarks*"]
[null,"The Shuangqiaoshan Group (SQS)"]
["WW217","The Hengyong Formation",null,"Mudstone","N 29o21'23.1\", E 115o01'28.8\"",null,null,"G"]
["WW221",null,null,"Mudstone",{"$nulls":3},"G"]
["WW223",null,null,"Mudstone",{"$nulls":3},"G"]
["WW225",null,null,"Mudstone",{"$nulls":3},"G"]
["WW226",null,null,"Mudstone",{"$nulls":3},"G"]
["WW227",null,null,"Mudstone",{"$nulls":3},"G"]
[]
["WW230","The Jiling Formation",null,"Sandstone","N 29o21'14.2\", E 115o01'31.6\"",null,null,"G, P"]
["WW231",null,null,"Sandstone",{"$nulls":3},"G, P"]
["WW232",null,null,"Sandstone",{"$nulls":3},"P"]
["WW235",null,null,"Sandstone",{"$nulls":3},"P"]
["WW236",null,null,"Sandstone","N 29o21'23.1\", E 115o01'28.8\"",null,null,"G"]
["WW237",null,null,"Sandstone",{"$nulls":3},"G, P"]
["WW238",null,null,"Sandstone",{"$nulls":3},"G, P"]
[]
["WW158","The Anlelin Formation",null,"Mudstone","N 29o20'57.1\", E 115o08'34.1\"",null,null,"G"]
["WW161",null,null,"Mudstone",{"$nulls":3},"G"]
["WW163",null,null,"Mudstone",{"$nulls":3},"G"]
["WW166",null,null,"Mudstone",{"$nulls":3},"G"]
["WW171",null,null,"Sandstone",{"$nulls":3},"G"]
["WW174",null,null,"Sandstone",{"$nulls":3},"G"]
["WW175",null,null,"Sandstone",{"$nulls":3},"G, P"]
["WW177",null,null,"Sandstone",{"$nulls":3},"G, P"]
["WW180",null,null,"Sandstone","N 29o21'08.4\", E 115o07'12.5\"",null,null,"G, P"]
["WW182",null,null,"Sandstone",{"$nulls":3},"G, P"]
["WW185",null,null,"Mudstone",{"$nulls":3},"G"]
[]
["WW240","The Xiushui Formation",null,"Sandstone"," N 29o02'52.2\", E 114o33'59.3\"",null,null,"G, P"]
["WW245",null,null,"Mudstone",{"$nulls":3},"G"]
["WW246",null,null,"Sandstone",{"$nulls":3},"G, P"]
["WW247",null,null,"Sandstone"," N 29o03'09.1\", E 114o35'37.1\"",null,null,"G, P"]
["WW249",null,null,"Sandstone",{"$nulls":3},"G, P"]
[]
[null,"The Xikou Group (XK)"]
["WN1001","The Banqiao Formation",null,"Sandstone","N 29o37'25.2\", E 117o44'25.9\"",null,null,"G"]
["WN1002",null,null,"Sandstone",{"$nulls":3},"G, P"]
["WN1004",null,null,"Phyllitic siltstone",{"$nulls":3},"G"]
["WN1006",null,null,"Sandstone",{"$nulls":3},"G, P"]
["WN1007",null,null,"Sandstone",{"$nulls":3},"G"]
["WN1008",null,null,"Sandstone",{"$nulls":3},"G"]
[]
["WN1012","The Mukeng Formation",null,"Sandstone","N 29o38'20.8\", E 117o45'5.4",null,null,"G, P"]
["WN1016",null,null,"Phyllitic siltstone",{"$nulls":3},"G"]
["WN1021",null,null,"Phyllitic siltstone",{"$nulls":3},"G"]
["WN1022",null,null,"Phyllitic siltstone",{"$nulls":3},"G"]
["WN1023",null,null,"Phyllitic siltstone",{"$nulls":3},"G"]
["WN1024",null,null,"Phyllitic siltstone",{"$nulls":3},"G"]
[]
["WN1025","The Niuwu Formation",null,"Sandstone","N 29o53'31.8\", E 118o15'31.3\"",null,null,"G, P"]
["WN1027",null,null,"Sandstone",{"$nulls":3},"G"]
["*: G represents the sample used for geochemistry analysis; P indicates the sample used for petrology observation"]

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