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Table T17. Epifluorescence microscopy microsphere counts in basement basalt samples, Site U1368.

Core, section Depth
(mbsf)
Microsphere count (log10 microspheres/cm3)
Washing solution Exterior untreated Exterior washed 2× Exterior flamed Interior
329-U1368F-
2R-1 9.7 5.0 3.5 ND ND ND
2R-4 13.4 4.7 3.5 ND ND ND
4R-2 30.0 4.5 2.4 3.3 2.4 ND
5R-3 40.2 4.4 ND 3.4 2.6 3.2
7R-3 50.4 4.9 4.8 4.4 3.5 3.4
9R-1 62.8 4.6 3.3 2.6 2.9 ND
13R-3 99.7 4.3 3.3 2.7 2.5 2.6
14R-1 106.1 4.3 3.7 2.9 2.7 3.1

ND = no microspheres observed by microscopic observations.

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