Application of Spatial Database in Quantitative Study of LithoPalaeogeography—A Case Study of a Middle Ordovician Sequence Interval in Ordos Basin<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p>

Times New Roman">Application of Spatial Database in Quantitative Study of LithoPalaeogeography—A Case Study of a Middle Ordovician Sequence Interval in Ordos Basin

详细信息

责任者：Li Bin (School of Resource and Information Technology ; China University of Petroleum ; Beijing 102249 ; China) ; Cheng Changqing
刊名：Earth Science Frontiers
出版年：2009
卷期：16(5)
关键词：岩相古地理 ; lithofacies paleogeography ; 层序 ; sequence ; 鄂尔多斯盆地 ; Ordos Basin
页码：p.251-263
图表：6 illus., 1 table, 47 refs.
分类号：0803
issnNo：ISSN1005-2321
isbnNo：CN11-3370/P

摘要

Times New Roman">

In the study of sequence litho-palaeogeography, the quantitative analysis, precise calculation and detailed comparison of tremendous geological data, such as field profiles, logging records and seismic curves from different areas, are the basic requirements. In order to obtain a more reliable and precise result, the authors developed a method, by using the spatial database to manage effectively the data that cannot be treated by traditional ways. Finally synthesis multiple factors have to be used to reconstruct the litho-palaeogeography for each of the sequence intervals. The study shows that the proposed method is quite effective and has a much higher resolution in recognizing litho-paleogeographic subunits than traditional ways. For example, in one of the Middle Ordovician sequence interval (444～446 Ma) of the Ordos Basin, the authors successfully mapped the precise distribution of various facies units, such as old land, submarine uplift, up tidal flat, middle tidal flat and down tidal flat.

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