Figure F13. A. Core photograph of a portion of stratigraphic Subunit IIIa with structureless bedding. A very large, angular, aphyric clast is in the center of the image within a finer hyaloclastic matrix. Some of the constituent volcanic clasts are angular, whereas others have a more rounded shape. B. Core photograph of a portion of Subunit IIIb in Hole U1348A showing a greater proportion of carbonate relative to volcaniclastics. Volcanic constituents are smaller and much more rounded than those in Subunits IIIa or IIIc. Bioclastic elements such as bivalves are also present in this subunit.
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