Table T1.

Table T1. Measurements of radiogenic heat production on samples of acoustic basement, Sites 1067 and 1068.

Core, section,
interval (cm) Piece U
(ppm) Th
(ppm) K
(%) Heat
output (µW/m³) Lithology from shipboard core description

173-1067A-

14R-1, 49-53 6A 0.360 0.980 0.458 0.1979 Foliated amphibolite; 1%-5% veins

14R-1, 84-86 7 0.977 7.198 0.216 0.7769 Tonalite gneiss; 1% veins

15R-1, 24-26 5 0.801 12.675 0.542 1.1404 Foliated amphibolite; 1%-5% veins

15R-1, 62-65 11 0.620 9.879 0.318 0.8797 Tonalite gneiss; 1% veins

16R-1, 14-19 4 1.590 4.719 0.050 0.7501 Tonalite gneiss; 1% veins

16R-2, 33-36 1C 0.364 1.070 0.450 0.2046 Foliated amphibolite; 5% veins

19R-3, 64-68 7 0.258 0.916 0.435 0.1650 Amphibolite 65%-anorthosite 25% breccia; 20% veins

20R-1, 54-57 4 0.160 1.030 0.268 0.1346 Amphibolite 75%-anorthosite 15% breccia; 10% veins

22R-2, 114-117 6 0.565 8.890 0.072 0.7771 Weakly foliated amphibolite 60%-100%, felspathic material 5%-20%

23R-2, 55-57 1B 0.355 1.613 0.267 0.2264 Amphibolite (metagabbro) 85%, anorthosite 10%; 3% veins

23R-4, 18-20 1 0.349 1.868 0.376 0.2511 Amphibolite (metagabbro) 85%, anorthosite 10%; 4% veins

23R-5, 27-30 3 0.266 0.265 0.493 0.1258 Amphibolite (metagabbro) 85%, anorthosite 10%

21R-2, 12-15 1 0.030 0.030 0.012 0.0109 Serpentinized peridotite; changed color

173-1068A-

23R-2, 7-10 1 0.030 0.030 0.007 0.0105 Serpentinized peridotite; 2% veins

24R-2, 58-62 4A 0.030 0.030 0.028 0.0121 Serpentinized peridotite; 1% veins

26R-1, 72-77 3G 0.030 0.030 0.001 0.0100 Serpentinized peridotite; 5%-8% veins; sampled large vein

26R-1, 112-115 4B 0.030 0.030 0.007 0.0105 Serpentinized peridotite; 5%-8% veins

29R-3, 60-63 1C 0.030 0.030 0.013 0.0109 Serpentinized peridotite; 1%-5% veins

Core, section, interval (cm)	Piece	U (ppm)	Th (ppm)	K (%)	Heat output (µW/m³)	Lithology from shipboard core description
173-1067A-
14R-1, 49-53	6A	0.360	0.980	0.458	0.1979	Foliated amphibolite; 1%-5% veins
14R-1, 84-86	7	0.977	7.198	0.216	0.7769	Tonalite gneiss; 1% veins
15R-1, 24-26	5	0.801	12.675	0.542	1.1404	Foliated amphibolite; 1%-5% veins
15R-1, 62-65	11	0.620	9.879	0.318	0.8797	Tonalite gneiss; 1% veins
16R-1, 14-19	4	1.590	4.719	0.050	0.7501	Tonalite gneiss; 1% veins
16R-2, 33-36	1C	0.364	1.070	0.450	0.2046	Foliated amphibolite; 5% veins
19R-3, 64-68	7	0.258	0.916	0.435	0.1650	Amphibolite 65%-anorthosite 25% breccia; 20% veins
20R-1, 54-57	4	0.160	1.030	0.268	0.1346	Amphibolite 75%-anorthosite 15% breccia; 10% veins
22R-2, 114-117	6	0.565	8.890	0.072	0.7771	Weakly foliated amphibolite 60%-100%, felspathic material 5%-20%
23R-2, 55-57	1B	0.355	1.613	0.267	0.2264	Amphibolite (metagabbro) 85%, anorthosite 10%; 3% veins
23R-4, 18-20	1	0.349	1.868	0.376	0.2511	Amphibolite (metagabbro) 85%, anorthosite 10%; 4% veins
23R-5, 27-30	3	0.266	0.265	0.493	0.1258	Amphibolite (metagabbro) 85%, anorthosite 10%
21R-2, 12-15	1	0.030	0.030	0.012	0.0109	Serpentinized peridotite; changed color
173-1068A-
23R-2, 7-10	1	0.030	0.030	0.007	0.0105	Serpentinized peridotite; 2% veins
24R-2, 58-62	4A	0.030	0.030	0.028	0.0121	Serpentinized peridotite; 1% veins
26R-1, 72-77	3G	0.030	0.030	0.001	0.0100	Serpentinized peridotite; 5%-8% veins; sampled large vein
26R-1, 112-115	4B	0.030	0.030	0.007	0.0105	Serpentinized peridotite; 5%-8% veins
29R-3, 60-63	1C	0.030	0.030	0.013	0.0109	Serpentinized peridotite; 1%-5% veins