CAJ | 학술논문

山东临朐-昌乐地区新生代火山岩是新近纪中新世-上新世火山活动产生的大陆溢流玄武岩，分为牛山期、山旺期和尧山期，主喷发期为牛山期和尧山期，属于碱性玄武岩系列。火山岩化学成分由早至晚向富碱、钛、钙，贫硅、镁、锰的方向演化，岩浆分异程度晚期较早期高。岩石内有大量二辉橄榄岩、方辉橄榄岩等幔源包体和透长石、普通辉石、尖晶石等巨晶。玄武岩K—Ar年龄为4．34～18．87Ma。火山岩岩浆来源于上地幔。
산동림구-창악지구신생대화산암시신근기중신세-상신세화산활동산생적대륙일류현무암，분위우산기、산왕기화요산기，주분발기위우산기화요산기，속우감성현무암계렬。화산암화학성분유조지만향부감、태、개，빈규、미、맹적방향연화，암장분이정도만기교조기고。암석내유대량이휘감람암、방휘감람암등만원포체화투장석、보통휘석、첨정석등거정。현무암K—Ar년령위4．34～18．87Ma。화산암암장래원우상지만。
The Cenozoic lava in linqu-changle area of shandong province is continental overflow basalt produced in the volcanic activities from Miocene epoch to Pliocene epoch, it can be divided into niushan stage, shanwang stage and yaoshan stage. The major eruption period is in niushan stage and yaoshan stage, the lava belong to alkali basaltoid. Chemical composition of the lava enriched alkali,titanium, calcium and decreased in silicon, magnesium, manganese from forepart to later period, the degree of the magmatic differentiation is more higher the later than the earlier. There are lot of inclusion of Iherzolite, harzburgites and other mantled-derived inclusion and large crystals of sanidinite, augite and spinel. The K-Ar age of the lava is 4.34-18.87Ma. The lava magma is derived from upper mantle.