Which increased process alters cave stalactite δ18O ratios?

💡 Explanation

Increased isotopic fractionation occurs during evaporation because lighter isotopes evaporate faster; thus, oxygen isotope fractionation causes δ18O ratios to change, therefore the stalactite composition changes due to differing temperature history reflected in oxygen isotope ratios, rather than other chemistry.

• Which outcome occurs when the descending slab stagnates during subduction?
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• Which process primarily controls oxbow lake salinity in an arid region with high evaporation rates?
• Increased freshwater influx into the North Atlantic disrupts the Atlantic Meridional Overturning Circulation by which mechanism?
• Which risk increases when concentrated animal feeding operations (CAFOs) are located in regions with soluble bedrock?
• Which outcome results from excessive removal of loess?