Abstract:The mantle is one of the largest reservoirs of deeply buried carbon and nitrogen in the Earth. Currently, mantle xenolith, which potentially originated from indigenous mantle, is the sole sampling access for mantle material from which to understand the enigmatic deep carbon and nitrogen cycles. Based on Deines (2002) , there are three major origins of deep carbon in mantle xenolith: i) pristine mantle carbon, ii) sedimentary organic carbon, and iii) oceanic limestone, including inorganic carbon. We can estimat… Show more
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