**Author details**

Yasuto Itoh1 , Shigekazu Kusumoto2 and Keiji Takemura3

1 Graduate School of Science, Osaka Prefecture University, Osaka, Japan

2 Graduate School of Science and Engineering for Research, University of Toyama, Toyama, Japan

3 Graduate School of Science, Kyoto University, Kyoto, Japan

## **References**


[8] Koizumi K, Fujimoto H, Inokuchi H, Uchitsu M, Kono Y. Marine gravity measure‐ ments over the Seto Inland Sea, western Japan. Journal of the Geodetic Society of Ja‐ pan 1994; 40: 333-345.

**Acknowledgements**

**Author details**

Yasuto Itoh1

**References**

tonics 1982; 1: 91-105.

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Kyushu, Japan. Tectonophysics 1998; 284: 135-150.

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Japan

The authors are grateful to O. Takano for his constructive review; an early version of the

and Keiji Takemura3

2 Graduate School of Science and Engineering for Research, University of Toyama, Toyama,

[1] Aydin A, Nur A. Evolution of pull-apart basins and their scale independence. Tec‐

[2] Fitch TJ. Plate convergence, transcurrent faults, and internal deformation adjacent to southeast Asia and the western Pacific. Journal of Geophysical Research 1972; 77:

[3] Noda A, Toshimitsu S. Backward stacking of submarine channel-fan successions con‐ trolled by strike-slip faulting: The Izumi Group (Cretaceous), southwest Japan. Litho‐

[4] Wang CL. Metamorphism and tectonics of the Sanbagawa Belt in northwestern Kii

[5] Huzita K. Role of the Median Tectonic Line in the Quaternary tectonics of the Japa‐

[6] Gravity CD-ROM of Japan, Ver. 2, Digital Geoscience Map P-2. [CD-ROM] Tsukuba:

[7] Itoh Y, Takemura K, Kamata H. History of basin formation and tectonic evolution at the termination of a large transcurrent fault system: deformation mode of central

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1 Graduate School of Science, Osaka Prefecture University, Osaka, Japan

270 Mechanism of Sedimentary Basin Formation - Multidisciplinary Approach on Active Plate Margins

3 Graduate School of Science, Kyoto University, Kyoto, Japan

manuscript was substantially improved by his comments.

, Shigekazu Kusumoto2


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**Chapter 12**

**Numerical Modeling of Sedimentary Basin Formation at**

When a sedimentary basin forms at the termination of a lateral faults, it is known as a pullapart basin. It is well known that tectonic basins, such as pull-apart basins, are generally formed at the termination of right-lateral, right-stepping and left-lateral, left-stepping fault systems (e.g., [1]). This is mainly caused by the formation of subsidence at the fault termination by the lateral motion of the faults. Subsidence is therefore likely to be found piled up at the termina‐ tion of right lateral right-stepping and left lateral left-stepping fault systems. In contrast, uplift structures are formed at the termination of right-lateral left-stepping and left-lateral rightstepping fault systems, because the terminations are located in an area where uplift is piled up, due to the lateral motion of the fault (Figure 1). Such structures are found in many places globally, and their fundamental formation mechanisms have been numerically simulated by

Katzman et al. [3] attempted to restore the subsurface structures of the Dead Sea, estimated from gravity anomalies (e.g., [4]), by means of Boundary Element Modeling (BEM), and indicated that it is necessary to assume long overlapping faults and a very high Poisson's ratio in order to restore the Dead Sea pull-apart basin. Rodgers [2] attempted to simulate the formation of a pull-apart basin by means of dislocation modeling (e.g., [5]), and this was probably the first study which discussed the formation of a pull-apart basin using numerical

> © 2013 Kusumoto et al.; licensee InTech. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

© 2013 Kusumoto et al.; licensee InTech. This is a paper distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

**the Termination of Lateral Faults in a Tectonic Region**

**where Fault Propagation has Occurred**

**1.1. Pull-apart basin forming at the termination of lateral faults**

Shigekazu Kusumoto, Yasuto Itoh, Osamu Takano and Machiko Tamaki

http://dx.doi.org/10.5772/56558

numerous researchers (e.g., [2, 3]).

modeling.

**1. Introduction**

Additional information is available at the end of the chapter

