地震沉积学在GA地区的初步应用
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摘要
地震沉积学是一门新兴的边缘交叉学科,其关键技术主要是90°相位转换技术,地层切片技术和频谱分解技术。这里利用地层切片技术结合高分辨率层序地层学技术,对GA地区上三叠统须家河组进行了研究。把须家河组分为四个长期基准面旋回,分别为MSC1、MSC2、MSC3、MSC4。在层序分析基础上,利用地震沉积学原理和方法,进行地层切片及属性提取。总之,地震沉积学是在地震地层学基础之上发展起来的,但其研究结果比地震地层学更精细,更接近于地层真实情况。
Seismic sedimentology is a new marginal intersection subject and its key methods are 90° phasing convertion,stratal slicing and frequency decomposion.This article used 90°phasing convertion and stratal slicing to research the upper Triassic Xujiahe formation in Guangan area at the base of high resolution sequence stratigraphy,which have the four third class sequence units,being MSC1、MSC2、MSC3、MSC4,respectively.Moreover,MSC3 have six fourth class sequence units.Using the concept of seismic sedimentology the southeast study areas are braided stream sedimentary facies by analyzing stratal slicing.
引文
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