中国科学院南京地质古生物研究所机构知识库

TEX86是一种新的重建古海水和古湖水表层水体温度（SST和LST）的指数。此指数不受表层水体的营养状况和盐度等参数的影响，能广泛应用于缺乏碳酸岩和有孔虫的沉积物的沉积相和早至白垩纪Aptian期地层的古温度重建。文章详细介绍了用于TEX86分析的类异戊二烯GDGTs的结构及其源生物，以及TEX86温标的原理、分析方法、应用和仍存在的问题。

The TEX88 （TetraEther indeX of tetraether consisting of 86 carbon atoms） is a new palaeother- mometer of reconstructions for the past sea-surface temperatures （SST） and lake-surface temperatures （LST）. It is confidently free from the effects of proxies changing on salinity and nutrient in the water-column, and then is used extensively on the palaeo-temperature exPlorations, especially, in the deposit basins lacking of carbonates and foraminif- era and in the rocks earlier to the strata of Aptian Stage of Cretaceous. Herein, we try to introduce basically the information of isoprenoid GDGTs＇ structures and its source organisms for TEX86 index analysis, and including its principles, analyzing methods, applications and its shortages as well.