We studied a 100s to 3 million yrs soil chronosequence preserved in alluvial terrace deposits of the Merced River, CA to unravel how soil mineralogy affects soil carbon storage and succeptibility to warming. This study was recently published in Nature Geoscience.
Link to the article on Nature Geoscience website https://rdcu.be/2kvs
See also the UC Merced Press Release about the article at this link