陇中盆地及周边地区主夷平面演化与高原隆升

马振华,彭廷江,李小苗,冯展涛,郭本泓,李孟,张军,宋春晖

Evolution of the main planation surfaces in the Longzhong Basin and its surrounding areas and its significance for the uplift of the Tibetan Plateau

Zhenhua MA,Tingjiang PENG,Xiaomiao LI,Zhantao FENG,Benhong GUO,Meng LI,Jun ZHANG,Chunhui SONG

表1 样品U和Pb元素测量结果

Table 1 U and Pb data for the sample considered in this study

样品编号 样品量/mg U/（10-3 mg?g-1） Pb/（10-3 mg?g-1） 238U/206Pb 误差（2σ） 207Pb/206Pb 误差（2σ） 5-1987 563.52 0.605 0.323 6.499 0.518 0.858 0.100 5-1988 251.40 0.571 0.201 9.857 0.517 0.856 0.100 5-1989 564.66 0.516 0.372 4.818 0.536 0.858 0.102 5-1990 214.28 0.566 0.225 8.735 0.512 0.857 0.100