Palaeo-seawater of Kutch region, Gujarat, India

摘要

Earthquakes provide an opportunity not only to unravel the hidden mysteries of nature but also facilitate calculation of the magnitude of palaeo-earthquakes by studying liquefaction features and reveal the presence of buried water bodies, etc. The M-w 7.7 Bhuj earthquake (2001) led to widespread liquefaction giving rise to sand blows, craters and lateral spreading. Near Chobari, sand and water spouts were found while some palaeo-channels and water bodies were found in Kulvida and Khadi. This study discusses the source of water to springs erupted near Lodai and demonstrates the usefulness of environmental isotopes in understanding the palaeo-salinity sources and processes. The linkage of spring water with past episodes of seawater intrusion was also briefed.