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1.GEOCHEMICAL CHARACTERISTICS OF SUBSURFACE FLUIDS AND VOLCANIC HAZARD ASSESSMENT IN NORTHERN HAINAN VOLCANIC REGION
琼北火山区流体地球化学特征及近期火山喷发危险性评估收藏指正
2.All evidences indicate that the lava flow, tephra, ash and toxic gases of the volcanic activities are the main factors that caused the biological hazard and the fossil preservation of "Jehol Biota" in Sihetun and the adjacent area.
种种迹象表明 ,四合屯及其周边地区的义县组火山活动所产生的熔岩流和有毒、有害气体以及频繁爆发的火山灰等是造成热河生物群灾难事件并使其得以保存的主要因素收藏指正
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