|
Core, section,
Interval (cm): |
138-846B-45X-1
76-79 |
201-1226B-47X-CC
42-44 |
Standard BIR-1
|
SRM reported value
|
|---|---|---|---|---|
| Major element oxide (wt%): |
|
|
|
|
| SiO2 | 51.81 | 51.19 | 47.93 | 47.96 |
| TiO2 | 1.07 | 0.99 | 0.98 | 0.96 |
| Al2O3 | 16.39 | 16.62 | 15.43 | 15.5 |
| Fe2O3* | 10.05 | 10.14 | 11.25 | 11.3 |
| MnO | 0.19 | 0.14 | 0.16 | 0.18 |
| MgO | 8.22 | 7.19 | 9.24 | 9.7 |
| CaO | 10.26 | 10.54 | 13.05 | 13.3 |
| Na2O | 2.32 | 2.61 | 1.71 | 1.82 |
| K2O | 0.74 | 0.27 | 0.02 | 0.03 |
| P2O5 | 0.06 | 0.04 | 0.02 | 0.02 |
| LOI | 3.49 | 4.2 | 2 |
|
| Total | 101.11 | 99.73 | 99.79 | 100.77 |
| Trace element (ppm): |
|
|
|
|
| Ba |
|
8 | 7 | 7 |
| Ni |
|
181 | 147 | 170 |
| Sc |
|
34 | 40 | 44 |
| Cr |
|
472 | 356 | 370 |
| Cu |
|
128 | 116 | 125 |
| Dy |
|
3.37 | 2.61 | 4 |
| Ce |
|
4.3 | 3.7 | 1.9 |
| Co |
|
46.2 | 56.1 | 52 |
| Eu |
|
0.77 | 0.49 | 0.55 |
| Gd |
|
2.72 | 1.98 | 1.8 |
| Hf |
|
1.5 | <0.5 | 0.6 |
| Nd |
|
4.7 | 2.7 | 2.5 |
| La |
|
1.5 | 0.8 | 0.63 |
| Li |
|
|
|
|
| Sr |
|
137.8 | 108.7 | 110 |
| V |
|
205 | 337 | 310 |
| Y |
|
21 | 17.1 | 16 |
| Zn |
|
67 | 51 | 70 |
| Zr |
|
46.6 | 13.7 | 18 |
| SRM informational value (ppm): |
|
|
|
|
| As |
|
2.9 | 0.6 | 0.44 |
| B |
|
|
|
|
| Be |
|
|
|
|
| Cl |
|
|
|
|
| F |
|
|
|
|
| Ga |
|
16.8 | 16.1 | 16 |
| Lu |
|
0.38 | 0.27 | 0.26 |
| Nb |
|
1.1 | <0.5 | 0.6 |
| Pb |
|
0.3 | 4.5 | 3 |
| Sb |
|
0.1 | 0.5 | 0.58 |
| Sm |
|
2.2 | 1.2 | 1.1 |
| Additional element (ppm): |
|
|
|
|
| C |
|
0.21 |
|
|
| S |
|
0.04 |
|
|
| Mo |
|
<0.1 | <0.1 |
|
| Cd |
|
0.1 | <0.1 |
|
| Bi |
|
<0.1 | <0.1 |
|
| Ag |
|
0.1 | <0.1 |
|
| Au (ppb) |
|
1.8 | 2.4 |
|
| Hg |
|
0.05 | <0.01 |
|
| Tl |
|
1.1 | <0.1 |
|
| Cs |
|
0.2 | <0.1 |
|
| Rb |
|
7.2 | <0.5 |
|
| Sn |
|
<1 | <1 |
|
| Ta |
|
0.1 | <0.1 |
|
| Th |
|
<0.1 | <0.1 |
|
| U |
|
1.8 | <0.1 |
|
| W |
|
0.1 | <0.1 |
|
| Pr |
|
0.82 | 0.41 |
|
| Ho |
|
0.76 | 0.6 |
|
| Tb |
|
0.53 | 0.37 |
|
| Er |
|
2.46 | 1.78 |
|
| Tm |
|
0.34 | 0.27 |
|
| Yb |
|
2.24 | 1.61 |
|
Notes: * = total iron as Fe2O3. SRM = standard reference material, BIR-1 = U.S. Geological Survey Icelandic basalt SRM. Leg 138 analyses were conducted by X-ray fluorescence and Leg 201 analyses were conducted by inductively coupled plasma (ICP)-atomic emission spectrophotometry (major element oxides and Ba, Ni, Sc, and Cr) and ICP-mass spectrometry (all other trace elements). Leg 201 analysis were performed by Acme Labs, Vancouver, BC. The SRM was included in the analytical suite as an unknown.