The block structure and quaternary strike-slip block rotation of central Japan

Article Abstract:

Geologic and paleomagnetic evidence found at the inner belt of central Japan indicates that block boundaries exist in the area. Left-lateral faulting results in block rotational movements, which influences the crustal deformation of central Japan. Large earthquakes have a tendency to occur along the block boundaries. The values of the rotational angles are 3 degrees to 7 degrees in a clockwise direction. The rotational angles of the two western most blocks are smaller than those of the two eastern blocks.

Japan, Observations, Earth, Crust (Geology), Earthquakes, Faults (Geology)

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Late quaternary reorientation of stress field and extension direction in the southern Gulf of Suez, Egypt: evidence from uplifted coral terraces, mesoscopic fault arrays, and borehole breakouts

Article Abstract:

Late Quaternary to present uplift, extension and stress field data are integrated for the southern Gulf of Suez basin. The area is important for the gaining of better perspectives on the junction between the northern Red Sea divergent plate boundary, the Gulf of Aqaba-Levant transform boundary and the Gulf of Suez continental rift. Field and subsurface data indicate a counterclockwise rotation of the minimum horizontal stress direction during the Quaternary.

Geology, Stratigraphic, Stratigraphy, Quaternary period, Gulf of Suez

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Quaternary deformation in the eastern Pamirs, Tadzhikistan and Kyrgyzstan

Article Abstract:

Three main zones with unique kinematics and different displacement rates define a Quaternary deformation in the eastern Pamirs of Tadzhikistan and Kyrgyzstan. The tectonic observations show that the Pamirs are moving north with respect to Eurasia. A combination of thrusting and dextral strike-slip faulting can give a complete description of faulting patterns. Data collected on crustal seismicity of the region during various investigations are analyzed.

Analysis, Geology, Structural, Structural geology, Central Asia

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