The systematical 14 C age of a large gagatite, which has been found in the pumiceous airfall deposits of the last large eruption of Changbaishan\|Tianchi volcano, is dated from its centre to its edge. By fitting the 1...
详细信息
The systematical 14 C age of a large gagatite, which has been found in the pumiceous airfall deposits of the last large eruption of Changbaishan\|Tianchi volcano, is dated from its centre to its edge. By fitting the 14 C age with the high precise calibrated curve of tree ring, it is concluded that the date of the last large eruption is (1215±15)AD. In addition, the climatic effects of that large eruption are also discussed, pointing out that the last large eruption probably corresponds to the sulfuric acid peak at (1227±2)AD in GISP2 Greenland ice core.
The Upper Cave, situated further up of the hill above the Zhoukoudian Locality I, the well-known site of Peking Man, originally covered with superficial soil, was discovered in 1930, while seeking for the upper bounda...
详细信息
The Upper Cave, situated further up of the hill above the Zhoukoudian Locality I, the well-known site of Peking Man, originally covered with superficial soil, was discovered in 1930, while seeking for the upper boundary of the Peking Man Cave. The geological age of the Upper Cave has since been considered as the age of the Late Pleistocene. From the archaeological point of view, it belongs to the end of the Late Palaeolithic Period. Its
暂无评论