Table 7 Upper continental crust values of trace elements from previous studies
Trace elements | References | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
As | Cd | Cu | Cr | Mn | Zn | Ni | Pb | Ti | Fe | |
4.8 | 0.09 | 28 | 92 | 1000 | 67 | 47 | 17 | 6400 | 50,400 | Rudnick and Gao (2004) |
– | – | – | – | – | 67 | 47 | – | – | – | Kemp and Hawkesworth (2004) |
4.4 | 0.079 | 32 | 80 | 1000 | 70 | 38 | 18 | 6700 | 53,300 | Gao et al. (1998) |
– | – | – | – | – | – | – | – | 6000 | 49,400 | Borodin (1999) |
1.5 | 0.098 | 25 | 85 | 600 | 71 | 44 | 17 | – | 35,000 | Taylor and McLennan (1995) |
2 | 0.102 | 14 | 35 | 700 | 52 | 18.6 | 17 | 5400 | 30,890 | Wedepohl (1995) |
– | – | – | 112 | – | – | 56 | 17 | 5600 | 47,600 | Condie (1993) |
5.1 | – | – | – | – | – | – | – | – | – | Sims et al. (1990) |
– | – | – | – | – | – | 20 | – | – | – | Shaw et al. (1986) |
– | 0.098 | 25 | 85 | 700 | 71 | 44 | 17 | 5000 | – | Taylor and McLennan (1985) |
– | – | – | – | – | – | 20 | – | – | – | Weaver and Tarney (1984) |
– | – | 25 | 35 | – | 52 | 20 | – | – | – | Taylor and McLennan (1981) |
– | – | – | – | 1000 | – | – | – | 5500 | 57,800 | Ronov and Yaroshevsky (1976) |
– | 0.08 | 14 | 35 | – | 52 | 19 | 17 | – | – | Shaw et al. (1976) |
– | – | 26 | 76 | – | 60 | 19 | 18 | – | – | Eade and Fahrig (1973) |
– | – | – | – | 800 | – | – | – | 5400 | 44,000 | Fahrig and Eade (1968) |
– | 0.075 | – | 35 | 700 | 52 | 19 | 17 | 5400 | 40,900 | Shaw et al. (1967) |
3.56 | 0.09 | 23.63 | 67 | 812.5 | 61.4 | 31.66 | 17.22 | 5711.1 | 45,476.7 | Reference value for this study |