Table T10. Basement unit boundaries and curated unit thicknesses, Hole 1183A.

Boundary	Curated depth (mbsf)	Core, section	Piece*	Depth in section (cm)	Unit thickness† (m)	Boundary rationale
		192-1183A-
Top of basement	1130.37	54R-3	4-5	120		Beginning of basalt flows beneath sediment
1-2A	1130.73	54R-4	1-2	6	0.36	Limestone interbed between flows
2A-2B	1130.75	54R-4	2-3	8	0.02	Pillow basalts beneath limestone
2B-3A	1136.50	55R-1	NA	0	5.75	Limestone interbed between flows
3A-3B	1136.62	55R-1	1-2	12	0.12	Pillow basalts beneath limestone
3B-4A	1138.52	55R-2	5-6	77	1.90	Limestone interbed between flows
4A-4B	1138.60	55R-2	6-7	85	0.08	Pillow basalts beneath limestone
4B-5A	1146.10	56R-1	NA	0	7.50	Recrystallized limestone cobble + hyaloclastite between flows
5A-5B	1146.17	56R-1	1-2	7	0.07	Pillow basalts continue beneath limestone
5B-6	1166.50	60R-1	NA	0	20.33	Presence of hyaloclastite, poor recovery (more fractured rock, top of flow)
6-7	1192.19	64R-2	2-3	19	25.69	Presence of hyaloclastite between flows, pillow basalts beneath
7-8	1208.37	67R-3	7-8	53	16.18	Small piece (<1 cm) of hyaloclastite, pillow basalts beneath

Notes: * = no actual contacts were recovered; boundary locations are inferred between the indicated pieces. † = calculated using curated depths. NA = not applicable because the boundary is between the top of the indicated core and the bottom of the overlying core.