CAJ | 학술논문

新西兰南大盆地（Great South Basin）经历了裂谷期、拗陷期及大陆边缘期三个构造演化阶段，并发育了三套烃源岩，分别为裂谷期的上白垩统Hoiho群煤系烃源岩（为主要烃源岩）、拗陷期的上白垩统—古新统Taratu组海岸平原相煤系烃源岩和Wickliffe组海相泥岩烃源岩。源热耦合分析发现，裂谷期Hoiho群湖沼相煤系烃源岩埋藏深，有机质丰度高，热演化程度高，有效烃源岩体积大，生气潜力也大；Taratu组海岸平原相煤系烃源岩也是有效烃源岩。认为中央坳陷烃源岩发育，油气潜力大。
신서란남대분지（Great South Basin）경력료렬곡기、요함기급대륙변연기삼개구조연화계단，병발육료삼투경원암，분별위렬곡기적상백성통Hoiho군매계경원암（위주요경원암）、요함기적상백성통—고신통Taratu조해안평원상매계경원암화Wickliffe조해상니암경원암。원열우합분석발현，렬곡기Hoiho군호소상매계경원암매장심，유궤질봉도고，열연화정도고，유효경원암체적대，생기잠력야대；Taratu조해안평원상매계경원암야시유효경원암。인위중앙요함경원암발육，유기잠력대。
Grea t South Basin has experienced three tectonic evolution stages, i.e. the rifting, the depression and the passive margin stages. Three set of source rocks developed in the basin, which are Hoiho Group coal-measures that formed during the rifting stage, and Taratu coastal plain coal-measures and Wickliffe marine mudstone that formed during the depression stage. In the light of Zhang′s "source-heat co-control" theory, it is indicated that Hoiho Group coal-measures should be the principle gas source rock owing to their deep burial and large effective volume with abundant organic matter and high thermal evolution. Besides Taratu coal-measures may be also effective source rock in local areas. It is believed that Central Depression where thick source rocks develop is of giant hydrocarbon potential.