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金刚烷类化合物（简称ＤＩＡＭＯ）属成烃演化过程中的次生产物，一旦形成则非常稳定。笔者在Ｒｏ＝０．４８％的泥岩抽提物中检出ＤＩＡＭＯ，表明从塔里木盆地原油和烃源岩抽提物中检出ＤＩＡＭＯ的成熟度区间有扩大的可能性，其原因是ＤＩＡＭＯ的形成不仅受热力作用控制，而且可能与酸的催化作用（即岩性）有关。通过热模拟实验还选出了４－ＭＡＤ／３－ＭＡＤ和４，９－ＤＡＤ／３，４－ＤＡＤ两个新参数。用５２个塔里木原油样品试用，结果表明它们基本上有效。最后指出研究盆地原油尤其是混源油的成熟度时，应分别查明其轻、中、重各碳数段的成熟度，然后综合地质资料确定原油主体组成的成熟度。用单一参数或多种参数值“平均”来划分全盆地原油的成熟度的方法都是值得商榷的。
Adamantane (DIAMO) is a secondary product of hydrocarbon evolution and is very stable once formed. The authors detect DIAMO in a shale extract with Ro = 0.48%, indicating that there is an increased likelihood that the DIAMO maturity range may be detected from the crude and source rock extracts from the Tarim Basin due to the formation of DIAMO It is not only controlled by the action of heat but also related to the acid catalysis (ie lithology). Two new parameters of 4-MAD / 3-MAD and 4,9-DAD / 3,4-DAD were also selected by thermal simulation. The trial of 52 Tarim crude samples showed that they were essentially effective. Finally, it is pointed out that when studying the maturity of the crude oil, especially the mixed oil, the maturity of the light, medium and heavy carbons should be ascertained separately, and then the maturity of the main composition of the crude oil should be determined by comprehensive geological data. The method of dividing the maturity of whole basin crude oil by “averaging” a single parameter or multiple parameter values is debatable.