CAJ | 학술논문

漠河盆地依列克得组潜在烃源岩为一套发育在玄武岩系之间的湖沼相沉积岩系.本文利用多种有机地球化学分析手段,探讨了该套烃源岩的有机质丰度、类型、成熟度及火山岩对该套烃源岩的作用.漠河盆地依列克得组烃源岩有机质丰度较高,优于中侏罗系烃源岩;有机质类型以Ⅱ_B型为主,考虑到风化作用的影响,该套烃源岩有机质类型可能要优于元素分析的结果;有机质热演化程度比较低,处于刚进入生油门限的低成熟阶段,烃源岩并未受其周围玄武岩的过渡热烘烤作用,指示火山岩浆溢出的古地理环境应为水下湖盆环境.
막하분지의렬극득조잠재경원암위일투발육재현무암계지간적호소상침적암계.본문이용다충유궤지구화학분석수단,탐토료해투경원암적유궤질봉도、류형、성숙도급화산암대해투경원암적작용.막하분지의렬극득조경원암유궤질봉도교고,우우중주라계경원암;유궤질류형이Ⅱ_B형위주,고필도풍화작용적영향,해투경원암유궤질류형가능요우우원소분석적결과;유궤질열연화정도비교저,처우강진입생유문한적저성숙계단,경원암병미수기주위현무암적과도열홍고작용,지시화산암장일출적고지리배경응위수하호분배경.
The Yiliekede Formation source rock in Mohe Basin belongs to limnetic facies and is the development in basaltic seriesin. Based on various organic geochemical analyses, the abundant sources of the organic materials, the type of organic materials, the organic maturity and the influence of volcanic rocks on source rocks are discussed. The results show that the organic materials in the source rock are more abundant than in Jurassic Formation source rocks. Based on the elemental analysis, the organic materials are shown to be dominant in the type of Ⅱ_B kerogen. Due to the weathering effect, the organic materials may be better than in Ⅱ_B. The degree of thermal evolution of organic matter is still in a low mature stage, and has just entered the oil generation threshold. The source rocks are not heated seriously by the basalt, which indicates that the environment of the spilling of magma belongs to lake basin.