Plate P1. Woody tissues preserved as vitrinite. 1. T5945; Hole 1109C; 217.32 mbsf. Most of the gray reflecting material probably represents cell contents, and some suberinite and resinite are also present but are of extremely low reflectance. No major differences are obvious associated with the cell structures. The wood represents a phytoclast deposited in a marine setting. This type of vitrinite shows reflectances in the middle part of the range and is the most appropriate for use in rank assessments (reflected light; field width = 0.22 mm; vitrinite reflectance = 0.33%). 2. T5945; Hole 1116A; 102.14 mbsf. Cell contents have been humified and show slightly higher reflectances compared with the cell walls. Some small voids are present within some cell lumens, resulting in the presence of bright internal reflectances. These occurrences are referable to porigelinite. The ICCP (1971) terminology would include the cell contents in collinite, whereas the SAA system would place it within telovitrinite. Small differences are present in reflectance between the cell contents and the cell walls and neither shows distinctive fluorescence, so the fluorescence-mode image is not included (reflected light; field width = 0.22 mm; telovitrinite reflectance = 0.51%-0.46%). 3. T5855; Hole 1116A; 102.14 mbsf. Woody tissue seen in section perpendicular to the stem and preserved as vitrinite. Both the cell walls and the contents have been humified. The cells have probably had additional humic matter added. Reflectances of the cell contents are higher than for the cell walls. Cell walls are dominantly primary cell walls, but local thickening suggests that other tissue may be present. Reflectance contrast between the walls and the contents is strong (reflected light; field width = 0.22 mm; telovitrinite reflectance = 0.40% [cell lumens], 0.18% [walls]). 4. T5855; Hole 1116A; 102.14 mbsf. Both the cell walls and the contents have been humified. The cells have probably had additional humic matter added. Reflectances of the cell contents are higher than for the cell walls. Cell walls include primary cell walls but are sufficiently thick to indicate that some secondary cell wall material must also be present. In the original ICCP terminology, the walls would be termed telinite and the contents collinite. The SAA terminology would place the whole field within the telovitrinite category. Fluorescence of both the cell contents and walls is low (reflected light; field width = 0.22 mm; telovitrinite reflectance = 0.54% [cell lumens], R = 0.36% [cell walls]).

Plate P1. Woody tissues preserved as vitrinite. 1. T5945; Hole 1109C; 217.32 mbsf. Most of the gray reflecting material probably represents cell contents, and some suberinite and resinite are also present but are of extremely low reflectance. No major differences are obvious associated with the cell structures. The wood represents a phytoclast deposited in a marine setting. This type of vitrinite shows reflectances in the middle part of the range and is the most appropriate for use in rank assessments (reflected light; field width = 0.22 mm; vitrinite reflectance = 0.33%). 2. T5945; Hole 1116A; 102.14 mbsf. Cell contents have been humified and show slightly higher reflectances compared with the cell walls. Some small voids are present within some cell lumens, resulting in the presence of bright internal reflectances. These occurrences are referable to porigelinite. The ICCP (1971) terminology would include the cell contents in collinite, whereas the SAA system would place it within telovitrinite. Small differences are present in reflectance between the cell contents and the cell walls and neither shows distinctive fluorescence, so the fluorescence-mode image is not included (reflected light; field width = 0.22 mm; telovitrinite reflectance = 0.51%-0.46%). 3. T5855; Hole 1116A; 102.14 mbsf. Both the cell walls and the contents have been humified. The cells have probably had additional humic matter added. Reflectances of the cell contents are higher than for the cell walls. Cell walls include primary cell walls but are sufficiently thick to indicate that some secondary cell wall material must also be present. In the original ICCP terminology, the walls would be termed telinite and the contents collinite. The SAA terminology would place the whole field within the telovitrinite category. Fluorescence of both the cell contents and walls is low (reflected light; field width = 0.22 mm; telovitrinite reflectance = 0.54% [cell lumens], R = 0.36% [cell walls]). 4. T5855; Hole 1116A; 102.14 mbsf. Woody tissue seen in section perpendicular to the stem and preserved as vitrinite. Both the cell walls and the contents have been humified. The cells have probably had additional humic matter added. Reflectances of the cell contents are higher than for the cell walls. Cell walls are dominantly primary cell walls, but local thickening suggests that other tissue may be present. Reflectance contrast between the walls and the contents is strong (reflected light; field width = 0.22 mm; telovitrinite reflectance = 0.40% [cell lumens], 0.18% [walls]). Click on image or number to see enlargement.