• 责任者：Liu Xiang (Earth Sciences ; Jilin University ; Changchun 130061 ; China) ; Lang Jianjun
• 刊名：Geological Review
• 出版年：2011
• 卷期：57(5)
• 关键词：火山喷出物 ; ejecta ; 五大连池 ; Wudalianchi Lake
• 页码：p.650-658
• 图表：2 illus., 2 plates, 1 table, 28 refs.
• 分类号：0801
• 出版序号：198
• issnNo：ISSN0371-5736
• isbnNo：CN11-1952/P

Both the Laohei Mountain and Huoshao Mountain (extinct or dormant volcanoes) belong to the well-known Wudalianchi volcano swarm, Wudalianchi World Geopark, located in Dedu County, Heilongjiang Province. The debris avalanche occurred in Laohei and Huoshao volcanoes formed hummocky deposit. These hummocks composed of large debris avalanche blocks should be the block facies of the debris avalanche deposits and the blocks consist of grey-purple basaltic volcanic agglomerate and volcanic breccia that as same as that of the rocks exposed in the base of the cones of Laohei Mountain and Huoshao Mountain, which indicate that these deposit resulted from the avalanche event happened in the two volcanoes. These blocks were highly fractured and often with small fauts. During period of 1 720~1 721 AD the Laohei Mountain volcano formed in the Middle Pleistocene (0.16Ma) and Huoshao Mountain volcano erupted again.