权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Quantitative measurement of "Thermal Alteration Index" by means of computer graphics and its application to sedimentary basin analysis

计算机图形学定量测量“热蚀变指数”及其在沉积盆地分析中的应用

基本信息

批准号：
05640543
负责人：
UJIIE Yoshihiro
金额：
$ 1.28万
依托单位：
Hirosaki University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1993
资助国家：
日本
起止时间：
1993 至 1994
项目状态：
已结题

项目摘要

"Thermal Alteration Index" has not been recognized as a quantitative indicator, but as a qualitative indicator, and then it has not so much confidence as vitrinite reflectance. In this study I tried to indicate "Thermal Alteration Index" as numerical value of luminance of organic matter. Luminance of pollen and spore fossils, and amorphous kerogen isolated from about 300 mudstone samples, was measured by means of an Olympus image analyzer with image command 4198 program equipped a microscope.The most frequent values in luminance of pollen of Pinus and Tsuga and lumpy amorphous kerogen of a sample are reversibly correlative to vitrinite reflectance (Ro), respectivery. The most frequent values in luminance of pollen of Pinus and Tsuga irreversible change in the same way with burial diagenesis.In one borehole and one surface transect in whech thick Tertiary sediments deposited, organic maturation, especially the threshold of intense oil generation, determined with the most frequent values in luminance of pollen of Pinus and Tsuga in near equal to that determined with vitrinite reflectance. It is concluded that the most frequent value in luminance of pollen of Pinus and Tsuga is a useful parameter for organic maturation or diagenesis.The most frequent value in luminance of pollen of Pinus and Tsuga has a wide distribution at the same maturation stage. The most frequent values in luminance of 50 pollen grains of Pinus and Tsuga of a sample show a normal distribution. Therefore, this problem is solved, like vitrinite reflectance, with statistic treatment of the most frequent value in luminance of pollen grains of Pinus and Tsuga.

“热蚀变指数”作为一个定性指标，还没有被公认为是一个定量指标，因而不如镜质体反射率那样具有可信度。在本研究中，我尝试将“热蚀变指数”表示为有机质亮度的数值。用Olympus图象分析仪和图象命令4198程序对300个泥岩样品中的花粉、孢子化石和无定形干酪根的亮度进行了测量，发现松属和铁杉属花粉和样品中的浅色无定形干酪根的亮度值与镜质组反射率（Ro）呈可逆相关。松属和铁杉属花粉亮度的最频繁值与埋藏成岩作用的不可逆性变化一致，在一个沉积了厚的第三系沉积物的钻孔和一个地表剖面中，松属和铁杉属花粉亮度的最频繁值所确定的有机质成熟度，特别是强烈生油的阈值，与镜质体反射率所确定的结果接近。因此，松属和铁杉属花粉亮度的最大频次值可以作为有机质成熟或成岩作用的一个有用参数，在同一成熟阶段松属和铁杉属花粉亮度的最大频次值分布较广。松属和铁杉属50个花粉粒的最常见亮度值呈正态分布。因此，对松属和铁杉属花粉粒亮度的最频繁值进行统计处理，就像镜质体反射率一样，解决了这一问题。