| Text Description: |
Stratigraphic Unit No. 4. Interpreted deposit type: lahar or lahar complex. Thickness: >1 m, covered. Grain size: blocks to fine ash. Bedding: reverse graded beds. Sorting: poorly sorted. Juvenile clast type: tan (pumice-like clasts, yet still poorly vesiculated), brown (less dense, slightly more vesicular clasts), and black (dense, scoria-like clasts). Remarks: dense juvenile clast. Munsell color-wet: not provided. Munsell color-dry: N4. Grain shape: all. Age: >840+/-60 yr. B.P. |