摘要
合肥盆地上古生界煤系地层在地震剖面上以叠瓦冲断片的形式构成中生界盆地的基底,且部分地区反射特征不明确,利用地震资料难以追踪和描述其空间分布。在利用电法资料研究该区的过程中,应用拟地震处理?地质分层成像处理和三维成像处理等新的技术和方法,较好地提取了合肥盆地石炭—二叠系的电性层。以此为基础,在地震剖面上进行了煤系地层的追踪,初步掌握了石炭—二叠系的分布,为盆地深化研究奠定了基础。
Electric survey has yielded good results in complex belts, deep formations and large-sized structures. Upper Paleozoic coal measure strata in Hefei basin present imbricate reflections on seismic sections, composing the basement of Mesozoic basin. Nevertheless, the reflections are obscure in some areas, and hence it is difficult to trace and describe the spatial distribution with the help of seismic data. New electric techniques such as seismic fitting processing, geological horizon imaging and 3D imaging processing are described briefly in this paper, and it is shown that, with these techniques, Permo - Carboniferous electric horizons can be extracted quite satisfactorily in Hefei basin. Coal measure strata were traced on seismic sections, and the distribution of Permo-Carboniferous strata was roughly determined, which makes up the foundation for further basin research.
出处
《物探与化探》
CAS
CSCD
2008年第2期159-162,167,共5页
Geophysical and Geochemical Exploration
关键词
电法勘探
复杂地质体
煤系地层
电法识别
electric survey
complex geological body
coal measure strata
electric identification
