Geology Reference
In-Depth Information
Table 5.13 shows the average upper crustal compositions from the compilation
works of Wedepohl (1995), McLennan (2001) and Rudnick and Gao (2004). These
show that only eight elements account for 99% of the upper crust in weight; the
most prominent among them is oxygen, which is responsible for almost half.
Table 5.13: An average composition of the upper continental crust according
to different authors. Elements in g/g
Element Wedepohl
(1995)
McLennan
(2001)
Rudnickand
Gao(2004)
O 4.72E-01
4.72E-01
Si
2.88E-01
3.08E-01
3.09E-01
Al
7.96E-02
8.04E-02
8.15E-02
Fe 4.32E-02
3.50E-02
3.92E-02
Ca 3.85E-02
3.00E-02
2.57E-02
Na 2.36E-02
2.89E-02
2.73E-02
Mg 2.20E-02
1.33E-02
1.50E-02
K 2.14E-02
2.80E-02
2.32E-02
Ti
4.01E-03
4.10E-03
3.84E-03
C 1.99E-03
P 7.57E-04
7.00E-04
6.55E-04
Mn 7.16E-04
6.00E-04
7.74E-04
S 6.97E-04
6.20E-05
Ba 5.84E-04
5.50E-04
6.28E-04
F 5.25E-04
5.57E-04
Cl
4.72E-04
3.70E-04
Sr 3.33E-04
3.50E-04
3.20E-04
Zr 2.03E-04
1.90E-04
1.93E-04
Cr 1.26E-04
8.30E-05
9.20E-05
V 9.80E-05
1.07E-04
9.70E-05
Rb 7.80E-05
1.12E-04
8.40E-05
Zn 6.50E-05
7.10E-05
6.70E-05
Ce 6.00E-05
6.40E-05
6.30E-05
N 6.00E-05
8.30E-05
Ni
5.60E-05
4.40E-05
4.70E-05
La 3.00E-05
3.00E-05
3.10E-05
Nd 2.70E-05
2.60E-05
2.70E-05
Cu 2.50E-05
2.50E-05
2.80E-05
Co 2.40E-05
1.70E-05
1.73E-05
Y 2.40E-05
2.20E-05
2.10E-05
Nb 1.90E-05
1.20E-05
1.20E-05
Li
1.80E-05
2.00E-05
2.40E-05
Sc 1.60E-05
1.36E-05
1.40E-05
Ga 1.50E-05
1.70E-05
1.75E-05
Pb 1.48E-05
1.70E-05
1.70E-05
B 1.10E-05
1.50E-05
1.70E-05
Th 8.50E-06
1.07E-05
1.05E-05
Pr 6.70E-06
7.10E-06
7.10E-06
Continued on next page:::
Search WWH ::
Custom Search