Satellite radar data shows signs of subsidence, where groundwater extraction causing soil and rock layers to compress.

CHENNAI: Chief Minister MK Stalin on Wednesday allowed farmers and pottery workers to take alluvial soil (vandalmann) and clay (kaliman) from water sources like irrigation tanks, ponds, canals, lakes, ...

This is a preview. Log in through your library . Abstract Calcium-rich zeolites control naturally occurring chemical degradation in the black soils (Vertisols and their intergrades). With the help of ...