. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. 15 et al., this volume). This undermining has resulted in a fracturing of the submerged peat and slumping off of large blocks of peat into a watery muddy matrix of the fine-fibered peat (Fig. 14).. Figure 14. Slump blocks of broad-fibered peat(with Thalassia still growing on their upper surfaces) partially buried in a slurry of fine-fibered peat and scattered carbonate sediments. A Belize Sea-Level Curve A plot of the radiocarbon dates of peat from this study along with peat dates from other lagoon cores in th
. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. 15 et al., this volume). This undermining has resulted in a fracturing of the submerged peat and slumping off of large blocks of peat into a watery muddy matrix of the fine-fibered peat (Fig. 14).. Figure 14. Slump blocks of broad-fibered peat(with Thalassia still growing on their upper surfaces) partially buried in a slurry of fine-fibered peat and scattered carbonate sediments. A Belize Sea-Level Curve A plot of the radiocarbon dates of peat from this study along with peat dates from other lagoon cores in this area of Belize (Halley et al., 1977; Shinn et al., 1982) confirmed that the Acroporapalmata minimum sea-level curve for the western Atlantic (Lighty et al., 1982) is valid for the general region of Belize (Fig. 11). Almost all of the peat dates plotted on this sea-level curve or within a 3 m envelope above it ~ including the dates from the area of recent slumping. Indeed mangrove dates should plot above a sea-level curve that is based on shallow-water coral radiocarbon dates and the peat dates of this study provide an upper mangrove limit for this minimum sea-level curve. There are, however, three notable examples where the peat dates did not plot close to this sea-level curve ( 1). One date of 8808±600 yrs for CB6 at m (Shinn et al., 1982) was much older than expected. This peat was associated with terrigenous sediments and could have been contaminated with older debris. On the other hand, the two samples that plot below the curve, CB7 with a date of 2861±190 yrs at a depth of m (Shinn et al., 1982) and the TR1 date of 2670±90 yrs at a depth of m could both. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution. Press; National Research Council (U.
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