Thickness Variation of Tidal Couplets and Its Geological Significance
详细信息
- 责任者：Zhu Rui (College of Geosciences ; Yangtze University ; Jingzhou 434023 ; China) ; Zhang Changmin
- 刊名：Marine Geology & Quaternary Geology
- 出版年：2010
- 卷期：30(6)
- 关键词：潮汐作用 ; tidal processes ; 沉积相 ; sedimentary facies ; 珠江口盆地 ; Zhujiangkou Basin
- 页码：p.9-14
- 图表：1 illus., 2 tables, 15 refs.
- 分类号：0200
- issnNo：ISSN0256-1492
- isbnNo：CN37-1117/P
摘要
Tidal couplet thickness variation and its genetic mechanism are studied through smoothing processing, Fourier transformation and wavelet analysis for the cores taken from the Well A located in the Pearl River Mouth Basin. The authors compared the thickness of sandy and muddy laminae with the couplets thickness. It reveals that the thickness variation of sandstone and mudstone is not only controlled by the tide cycles, but also affected by the changes in microfacies and event deposits. The tide cycles in high frequency, works like a sinusoidal wave, of which the affects to the thickness of sandy laminae is small. On the contrary, facies changes have great influences on the thickness of sandy laminae, even the frequency of the changes is low.