太行山构造岩浆带K－Ar法同位素年龄分析

５００余个同位素测年数据的统计特征表明，目前所取得的Ｋ－Ａｒ法同位素年龄的统计峰值不能直接用来表示地质体的形成年龄，而是记录了区域造山抬升剥蚀的历史。利用不同地质样品的冷却年龄峰值，可以定性地估算区域隆升速率和隆升高度。在这个前提下，太行山构造岩浆带在中生代时期的抬升速率为０．４２１～０．２５３ｍｍ／ａ，隆升高度为８７９９～５２８８ｍ。

INTERPRETATION OF K Ar AGES OF TAIHANG TECTONOMAGMATIC BELT

The statistics of more than 500 isotopic age values from the Taihang tectonomagmatic belt show that the statistical peaks of the available K Ar ages can not be used to determine the forming ages of geological bodies, but recorded the history of orogenic uplifting denuding of the region. The statistical peaks of cooling ages of distinct geological samples can be used to qualitatively estimate the uplifting ratio and the uplifting height of a region. On this premise, the uplifting ratio of the Taihang tectonomagmatic belt in Mesozoic era is 0 421￣0 253mm/a,and the uplifting height is 8799￣5288m.