【摘要】 黑龙江省科洛火山群富钾火山岩主要岩石组合为碱玄岩、响岩等岩石,岩石学、岩石化学、地球化学、同位素等特征研究表明,其岩浆来自上地幔并为板内裂谷环境,是上地幔岩部分熔融形成的岩浆喷至地表冷凝形成的。岩石中幔源金云母、尖晶石二辉橄榄岩包体研究表明,科洛地区的上地幔是"过热"的,这种"过热"的状态,正是诱发大陆裂谷构造形成的根本原因。更多还原

【Abstract】 Main combination of the rich potassium volcanic rocks of the Kelou in Heilongjiang Province,are alkali basalt,phonolite,latite,etc..Studying the character of the lithology,petrochemistry,geochemistry,isotope,it indicate that the magma come from the upper mantle,and environment is the inner plate rift.They are formed by extrusion to the earth’s surface and condensation,a part of melting magma of upper mantle.Studying the character of the mantle-derived inclusion such as the inclusion of the phlogopite,spinel lherzolite,the upper mantle of the Kelou is "over heat",the state of the "over heat" is the fundamental reason of place a premium on continental rift.更多还原