摘要
塔里木盆地热历史潘长春，周中毅，范善发，解启来（中国科学院广州地球化学研究所，广州５１０６４０）关键词古地温，热历史，塔里木盆地由于古地温是控制油气生成和演化的重要因素，十多年来塔里木盆地古地温和生烃史一直是倍受关注的课题。早期的研究认为该盆地古地温...
Thermal maturation modeling of Tarim basin based on both methods presented by Waples and by Sweeney and Burnham indicates that paleothermal gradient of this basin in Paleozoic Era is significantly higher than that at present. In the central and northern areas of the basin, paleothermal gradient during Paleozoic Era is 3. 2￣ 2.9℃ /100m, and cools down solwly to 2.5℃/100m during Mesozoic Era and rapidly to about 2℃ /100m during Cenozoic Era,and in the eastern part of the basin, paleothermal gradient is much higher than that in the central and northern parts about 3. 8￣3.3℃ /100m during Paleozoic Era,and then cools down to 2.3°/100m at present. According to thermal and burial histories of the basin,hydrocarbon generation from Cambrian and Ordovician source rocks mainly occurs before Carboniferous Period and after Early Tertiary.
出处
《矿物岩石地球化学通报》
CAS
CSCD
1996年第3期150-152,177,共4页
Bulletin of Mineralogy, Petrology and Geochemistry
关键词
古地温
热历史
塔里木盆地
paleothermal gradient
maturation history
Tarim basin
