Initial Reports Volume 192 Chapter 4, Table 7. Whole-rock compositions of six fine-grained bulk samples, Hole 1184A. Notes: Fe2O3T = total Fe expressed as Fe2O3. LOI = weight loss on ignition at 1100degC; all analyses were conducted on ignited samples. Mg# and CIPW norms were calculated assuming Fe2O3/(Fe2O3 + FeO) = 0.13 or Fe2O3/FeO = 0.15. * = the appearance of nepheline in the norm is due to alkali gain in these highly altered rocks. BD = below detection limit (0.01% is assumed for norm calculations). Core, section: 18R-6 31R-1 36R-7 40R-3 42R-1 45R-6 Interval (cm): 43-45 140-142 74-76 37-41 147-150 82-85 Subunit: IIB IIDIIE IIE IIE IIE Depth (mbsf): 266.13 385.81 441.74 474.67 492.17 526.94 Major element (wt%) SiO2 52.09 50.68 49.89 50.38 50.98 50.79 TiO2 1.14 1.23 1.33 1.02 1.03 1.09 Al2O3 13.84 13.71 13.57 14.34 14.33 14.59 Fe2O3T 13.03 13.51 14.61 11.60 11.96 12.41 MnO 0.20 0.23 0.25 0.19 0.20 0.25 MgO 9.96 6.29 6.93 8.37 8.37 7.75 CaO 2.24 7.80 8.05 11.76 11.42 10.74 Na2O 5.06 4.95 4.27 2.06 1.79 1.66 K2O 2.07 0.54 0.10 0.09 BD 0.10 P2O5 0.11 0.11 0.12 0.11 0.10 0.11 Total: 99.73 99.06 99.11 99.91 100.18 99.50 LOI 8.01 7.03 5.82 5.89 5.97 7.39 Mg# 0.63 0.51 0.52 0.62 0.61 0.58 CIPW norms Q 0.0 0.0 0.0 0.2 2.5 3.9 Or 12.4 3.2 0.6 0.5 0.0 0.6 Ab 41.8 37.3 36.9 17.6 15.3 14.3 An 9.1 13.9 17.9 29.9 31.3 32.5 Ne 0.9* 3.0* 0.0 0.0 0.0 0.0 Di 1.2 20.6 18.3 23.1 20.6 17.1 Hy 0.0 0.0 3.1 24.2 25.9 26.9 Ol 29.8 16.8 17.6 0.0 0.0 0.0 Il 2.2 2.4 2.6 2.0 2.0 2.1 Mt 2.3 2.4 2.6 2.0 2.1 2.2 Ap 0.2 0.2 0.3 0.2 0.2 0.2 Trace element (ppm) Ni 82 81 79 106 118 114 Cr 110 147 129 314 293 310 V 334 343 379 303 315 330 Zr 61 67 76 54 58 60 Sc 49 50 51 48 46 51 Y 24 31 33 23 22 23 Sr 1142 108 104 97 95 87 Ba 36 16 29 19 18 22