Figure F21. Biogenic opal and terrigenous sediment mass accumulation rates (MARs) as components of the noncarbonate MAR at (A) selected Leg 138 sites and (B) Site 1237, for which total organic carbon (TOC) MAR is also plotted. Note that opal and TOC MARs are plotted at a different scale (on right) than noncarbonate and terrigenous MAR (on left) in (B).

Figure F21. Biogenic opal and terrigenous sediment mass accumulation rates (MARs) as components of the noncarbonate MAR at (A) selected Leg 138 sites and (B) Site 1237, for which total organic carbon (TOC) MAR is also plotted. Note that opal and TOC MARs are plotted at a different scale (on right) than noncarbonate and terrigenous MAR (on left) in (B).