Today we boxed rock core to 5456 ft, 80 ft deeper than yesterday. One of the really interesting sections of rock that we saw is the sediment shown in the photos below:
The photo on the left shows the entire interval of sediment (1.4 ft thick), while the photo on the right is a close-up view of the upper portion of this interval. Note the bedding of the sediment, and the abundance of green (altered) material that is helping cement the sediment together. The grain sizes of the sediments range from gravel to silt, but there is no particular gradation in sediment size with depth. Also note that in the upper portion of this sediment interval there are pahoehoe flow fragments (center of right photo), which presumably were eroded from their original location and ended up in the body of water where the sediments were deposited.
The photo on the left shows the entire interval of sediment (1.4 ft thick), while the photo on the right is a close-up view of the upper portion of this interval. Note the bedding of the sediment, and the abundance of green (altered) material that is helping cement the sediment together. The grain sizes of the sediments range from gravel to silt, but there is no particular gradation in sediment size with depth. Also note that in the upper portion of this sediment interval there are pahoehoe flow fragments (center of right photo), which presumably were eroded from their original location and ended up in the body of water where the sediments were deposited.
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