Basic concept of balanced cross section and duplex structures of the Shimanto Terrane, Kyushu, Japan
Basic concept of balanced cross section and duplex structures of the Shimanto Terrane, Kyushu, Japan
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日本九州四万十地体平衡截面和复式结构的基本概念
DOI：
10.3720/japt.65.16
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
A. Murata
中科院分区：
文献类型：
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作者：
A. Murata
石油勘探需要精确的横截面。平衡剖面构造（Dahlstrom，1969）是将表层结构外推到深度的一种非常有用的方法。他的方法的基本概念是，任何构造的截面的几何特征必须是恢复的截面的可回变形。变形剖面和未变形恢复剖面的床长和床面积必须相等，平衡剖面的建立在认识造山带褶皱冲断带复杂构造，特别是双重构造方面取得了很大的成功。但该方法应用于加积层序是非常困难的，因为原始层序没有澄清。然而，在这种情况下，平衡截面的概念对于理解逆冲构造至关重要。本文介绍了日本九州四万十地体双重构造的一些实例。关键词：平衡剖面，逆冲，双重，断层弯曲褶皱;正断层，四万十地体，九州
Petroleum exploration requires an exact cross section. Balanced cross section construction (Dahlstrom, 1969) is a very useful way to extrapolate surface structures to the depths. The basic concept of his method is that the geometric features of any constructed section must be retrodeformable to the restored section. Bed lengths and areas must be equal both in deformed cross section and undeformed restored section.Balanced cross section construction has been very successful in understanding complex structures of the fold and thrust belts of the orogenic belts, especially for duplex structures. But an application of the method to the accretionary terranes is very difficult, because original successions are not clarified. However in such a case, the concept of balanced cross section is essential to understand thrust structures. Some examples of the duplex structures of the Shimanto Terrane in Kyushu, Japan are described.Key words: balanced cross section, thrust, duplex, fault-bend fold; normal fault, Shimanto Terrane, Kyushu