Abstract
Chemical weathering of basalts draws important consideration for their study because of its enhanced role in controlling several geochemical processes such as silicate weathering and associated CO2 consumption. A systematic and detailed study on chemical weathering was made from the Deccan basalts (India) by analyzing elements and isotopes in river waters and sediments. The results show that the average contemporary silicate erosion rates and CO2 consumption rates of the Deccan are higher than their fractional aerial coverage. The entire studies on chemical weathering demonstrate the implication of basalt weathering, their enhanced role in weathering rates, atmospheric CO2 consumptions rates, and the role of Deccan basalt weathering to the secular Sr-isotope evolution at the KTB.
