Tectonic geomorphology and neotectonic setting of the seismically active South Wagad Fault (SWF), Western India, using field and GPR data

• Autorzy: Maurya D. C. , Chowksey V. , Tiwari P. , Chamyal L. S.

Identyfikatory

DOI

10.1007/s11600-017-0099-5

• Języki publikacji: EN

Abstrakty

EN

The South Wagad Fault (SWF) is an E–W trending fault that delimits the Wagad uplift comprising Mesozoic rocks in its northern upthrown block and Neogene–Quaternary sediments in the southern downthrown block. Detailed GPR investigations were carried out at seven sites selected after field studies. All profiles clearly showed the lithological contrast across the fault. The sharp amplitude contrast of the radar waves along a vertical to sub-vertical line is interpreted as the near surface trace of the SWF. As the Quaternary sediments are not displaced, we infer that no large magnitude earthquake has occurred along the SWF in late Quaternary. We attribute the low magnitude of neotectonic activity along the SWF to gentle warping of the Tertiary rocks in the southern downthrown block and greater accumulation of compressive stresses along the nearby KMF with an opposite structural setting. This is consistent with the observed variable levels of ongoing seismicity in the region around the SWF.

Słowa kluczowe

EN

Western India; neotectonics; tectonic geomorphology; active fault; South Wagad Fault; SWF; Kachchh

PL

Indie Zachodnie; neotektonika; geomorfologia tektoniczna

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2017
• Tom: Vol. 65, no. 6
• Strony: 1167--1184
• Opis fizyczny: Bibliogr. 37 poz.

Twórcy

autor

Maurya D. C.

• Department of Geology, The M. S. University of Baroda, Vadodara, India

autor

Chowksey V.

• Department of Geology, The M. S. University of Baroda, Vadodara, India
• Subsurface Team, Cambay Asset, Oil and Natural Gas Corporation Ltd., Khambhat, India

autor

Tiwari P.

• Department of Geology, The M. S. University of Baroda, Vadodara, India

autor

Chamyal L. S.

• Department of Geology, The M. S. University of Baroda, Vadodara, India

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018)