A method for quantifying deep-sea carbonate dissolution using 14C dating

Abstract

The authors quantified the rate of carbonate dissolution with increasing water depth by taking the difference in the carbonate mass accumulation rate of deep (3393-4375 m) core top sediments from the shallowest one (3208 m). Results show low (0-0.3 g cm-2 ka-1) and high (1.5-1.7 g cm-2 ka-1) carbonate dissolution rates, above and below 4000 m, respectively. The sudden increase in the carbonate dissolution rate at 4000-m water depth is considered to mark the lysocline. -from Authors