地质科技情报2018，Vol.37Issue(3)：87-91,5.DOI:10.19509/j.cnki.dzkq.2018.0312
基于测井曲线频谱分析柴达木盆地西部七个泉地区上、下油砂山组米兰科维奇旋回特征
Characteristics of Milankovitch Cycles of Shangyoushashan and Xiayoushashan Formations in Qigequan Area, Western Qaidam Basin Based on the Spectral Analysis of the Logging Curve
摘要
Abstract
The Qigequan area is located in the northwestern margin of the Qaidam Basin.Due to its close proximity to the Altyn Tagh fault, the strata are more complex and highly precise sedimentary cycles are relatively weak, which is rarely discussed.The spectral analysis and filtering analysis of natural gamma ray logging data of Well Qinshen 2 in western Qaidam Basin show that there is a good correspondence between the ratio of high-frequency gyration thickness and the ratio of astronomical orbit weeks.After the deposition rate is demonstrated, the Milankovitch cycle is proved to be well conserved in the strata of Shangyoushashan and Xiayoushashan formations in Qigequan area of Chaixi.The thickness of sedimentary cycles, controlled by short eccentricity, long axial slope period, short axial slope period, long precession period and short precession period, are 11.38, 5.92, 5.10, 2.35 mand 2.11 m, respectively.While the thickness of sedimentary cycles, controlled by short eccentricity, long axial slope period, short axial slope period, long precession period and short precession period, are 8.17, 4.45, 3.27, 1.85 mand 1.51 mrespectively.关键词
自然伽马/米兰科维奇旋回/频谱分析/沉积速率/柴达木盆地Key words
natural gamma/Milankovitch cycle/spectral analysis/deposition rate/Qaidam Basin分类
能源科技引用本文复制引用
李堃宇,伊海生,夏国清..基于测井曲线频谱分析柴达木盆地西部七个泉地区上、下油砂山组米兰科维奇旋回特征[J].地质科技情报,2018,37(3):87-91,5.基金项目
国家自然科学基金项目(41402099) （41402099）
