摘要
古地温是影响沉积盆地形成与演化的重要因素,确定古地温对研究其生烃史和油气成藏史具有重要的意义.研究古地温的方法很多,主要有"将今论古"法和地质温度计法。本文主要应用自生伊利石结晶度和自生绿泥石化学成分,对济阳坳陷新生代古地温梯度进行分析。研究表明,济阳坳陷新生代古地温梯度为37.2～38.2℃/km。这一认识对济阳坳陷油气地质研究和勘探评价很有意义。
The Jiyang depression is an important exploration target of the Shengli oilfield. The subsurface paleotemperature was an important factor for affecting the formation and evolution of sedimentary basins and the determination of subsurface paleotemperatures has great significance for the study of the hydrocarbon generation history and entrapment history. There are many methods for the study of subsurface paleotemperatures, of which the use of ＂the past as the key to the present＂and geothermometry are the main methods. In this study the crystallinity of au paleogeothermal thigenic illite and chemical composition of authigenic chlorite was used to analyze the Cenozoic gradients in the study area. The study indicates that the Cenozoic paleogeothermal gradients in the Jiyang depression were 37.2-38.2℃/km. This understanding is of great significance for the study, exploration and evaluation of the petroleum geology of the Jiyang depression.
出处
《中国地质》
CAS
CSCD
2008年第2期273-278,共6页
Geology in China
基金
中国石油化工股份有限公司“十五”重点项目(P03007)资助
关键词
济阳坳陷
自生伊利石结晶度
自生绿泥石化学成分
古地温梯度
Jiyang depression
crystallinity of authigenic illite
chemical composition of authigenic chlorite
paleogeothermal gradient
