“蓝田人”的磁性地层年龄

蓝田附近两个地点更新世黄土中发现的蓝田人化石具有不同的年代。公王岭发现的蓝田人头盖骨的年代为距今115万年,陈家窝的下颌骨年代为距今65万年。年代资料来自于新的磁性地层学研究和黄土-古土壤序列的对比结果。公王岭地点蓝田人化石埋藏于反映了干冷气候的粉砂质黄土中的事实,以及与其相伴的“南方色彩”的哺乳动物群的存在表明,距今115万年前中国北方可能发生了一次重要的秦岭强烈隆起和气候干冷的地质事件。

MAGNETOSTRATIGRAPHIC DATES OF LANTIAN HOMO ERECTUS

Skeletal remains of Homo erectus found in Pleistocene loess at two sites near Lantian in central China are of greatly different geologic age. The fossil-bearing strata at Gongwang-ling is about 1.15 myr old whereas the remains found at the Chengjiawo locality in middle Pleistocene loess are about 0.65 myr old. The datin is based on new paleomagnetic polarity determinations and on the lithostratigraphic position of the fossils in the loesspaleosol sequence. The buried conditions and the living environment o fossil Man at Gongwangling may indicate that an important geological event called the "Gongwangling event" was marked by the tectonic uplift of the Qingling mountains and a climatic deterioration that happened 1.15 myr ago.