5 NATURAL ABUNDANCE OF THE STABLE ISOTOPES ... - Falw.vu
5 NATURAL ABUNDANCE OF THE STABLE ISOTOPES ... - Falw.vu
5 NATURAL ABUNDANCE OF THE STABLE ISOTOPES ... - Falw.vu
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Stable Isotopes of Hydrogen, Carbon and Oxygen13 VPDB (‰)+ 5bicarbonatemarinecalcitefreshwaterbicarbonate calcite0exchange with atmosphere 5atmospheric CO 210groundwater HCO 325C5 C15C 4 plantsexchange with soil CO 220soil CO 22530C 3 plantscoaloil35natural gas (CH 4 )40Fig.7.5Schematic survey of 13 variations in nature, especially of compounds relevant in thehydrological cycle.97