A study was made on samples from one core collected immediately after the December 2004 Asian tsunami to know the geochemical nature of the offshore tsunami sediments. The core sample was analyzed for sediment grain size, CaCO<Subscript>3</Subscript>, organic carbon (OC) and major elements (SiO<Subscript>2</Subscript>, TiO<Subscript>2</Subscript>, Al<Subscript>2</Subscript>O<Subscript>3</Subscript>, Fe<Subscript>2</Subscript>O<Subscript>3</Subscript>,...</subscript></subscript></subscript></subscript></subscript></subscript></subscript>

Four short core samples were collected from the creek, estuarine regions of southeast (SE) coast of India affected by the 2004 Asian Tsunami. The study is aimed to signify the importance of ostracoda species in identifying major natural events (e.g. Tsunamis) in the coastal regions. The presence...