Petrography, Geochemical Features and Absolute Dating of the Mesozoic Igneous Rocks of Medvedev and Taezhniy Massifs (Southeast Russia, Aldan Shield)
Abstract
:1. Introduction
2. Geological Setting
3. Materials and Methods
4. Results
4.1. Petrography
4.2. Geochemical Composition
4.3. Geochronology
4.4. Formation Conditions
5. Discussion
5.1. Petrography of Rocks of Medvedev Massif
5.2. Geochemical Composition of Rocks of Medvedev Massif
5.3. Geochronology of Rocks of Medvedev Massif
5.4. Formation Conditions of Rocks of Medvedev Massif
5.5. Petrography of Rocks of Taezhniy Massif
5.6. Geochemical Composition of Rocks of Taezhniy Massif
5.7. Geochronology of Rocks of Taezhniy Massif
5.8. Formation Conditions of Rocks of Taezhniy Massif
6. Conclusions
- According to field, petrographic and geochemical observations, it was revealed that the formation of the Medvedev massif occurred in three phases of rock intrusion and are presented in the following sequence: quartz syenites, pyroxene-amphibole syenites, quartz monzonites. According to the results of the same studies, two phases of rocks are defined in the structure of the Taezhniy massif: quartz monzonites and syenites.
- In terms of geochemical characteristics, the igneous formations of the Medvedev and Taezhniy massifs are similar to rocks derived from the latite and shoshonite series and can be considered as part of the monzonite–syenite formation type.
- The periods of formation of igneous rocks of the massifs were identified (Medvedev—122.0–118.0 Ma and Taezhniy—117.5–114.5 Ma) which correspond to the Early Cretaceous age of the Aptian.
- The opinion expressed previously regarding the participation of the subducted oceanic crust of the Mongolian–Okhotsk basin in the formation of all parent igneous chambers of the Aldan Complex, as well as the geochemical proximity of the rocks of the Mesozoic igneous formations with island arc volcanics, in general, is confirmed by our obtained geochemical data of the rocks of the Medvedev and Taezhniy massifs.
- The defined duality of the geochemical compositions of the igneous rocks of the massifs may be due to the presence of both mantle and crustal sources; however, it is most likely that these rocks resulted from the melting of a mixed mantle source or the latter contaminated by the crust with further the differentiation of melts in intermediate crust chambers.
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
Appendix A
Sample | Massif | Phase | SiO2 | TiO2 | Al2O3 | Fe2O3 | FeO | MnO | MgO | CaO | Na2O | K2O | H2O- | H2O+ | P2O5 | CO2 | S | F | Total | Na + K | Na/K | al’ | AG | ASI |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
I19–19/3 | Medvedev | 1 | 61.55 | 0.56 | 15.74 | 3.39 | 2.56 | 0.13 | 2.09 | 4.44 | 4.24 | 4.35 | 0.20 | 0.03 | 0.36 | 0.27 | nd | 0.04 | 99.95 | 8.59 | 0.97 | 1.42 | 0.74 | 0.80 |
I19–19/4 | 63.61 | 0.53 | 17.00 | 2.01 | 2.28 | 0.13 | 0.83 | 3.32 | 4.38 | 5.20 | 0.36 | 0.15 | 0.18 | 0.49 | nd | 0.03 | 100.50 | 9.58 | 0.84 | 2.57 | 0.75 | 0.90 | ||
I19–19/6 | 63.69 | 0.48 | 17.40 | 1.83 | 2.37 | 0.12 | 2.36 | 0.43 | 4.62 | 5.98 | 0.40 | 0.45 | 0.17 | 0.11 | 0.01 | 0.04 | 100.46 | 10.60 | 0.77 | 1.66 | 0.81 | 1.17 | ||
I19–19/7 | 63.68 | 0.53 | 16.63 | 3.03 | 1.87 | 0.09 | 1.02 | 2.45 | 4.59 | 5.12 | 0.58 | 0.32 | 0.18 | 0.27 | nd | 0.10 | 100.46 | 9.71 | 0.90 | 2.32 | 0.79 | 0.95 | ||
I19–19 2 | 61.41 | 0.24 | 16.30 | 2.25 | 1.68 | 0.08 | 4.08 | 2.51 | 4.52 | 5.32 | 0.40 | 0.69 | 0.17 | 0.86 | nd | 0.03 | 100.54 | 9.84 | 0.85 | 1.15 | 0.81 | 0.92 | ||
I19–22 | 63.50 | 0.52 | 16.34 | 2.45 | 1.81 | 0.09 | 0.87 | 2.87 | 4.69 | 5.32 | 0.34 | 0.51 | 0.20 | nd | nd | 0.05 | 99.56 | 10.01 | 0.88 | 2.58 | 0.82 | 0.87 | ||
I19–22/2 | 63.73 | 0.49 | 16.57 | 2.84 | 1.68 | 0.08 | 0.82 | 2.78 | 4.83 | 5.42 | 0.40 | 0.05 | 0.18 | 0.05 | nd | 0.05 | 99.97 | 10.25 | 0.89 | 2.64 | 0.83 | 0.88 | ||
I19–22/3 | 63.21 | 0.43 | 16.72 | 2.35 | 2.01 | 0.06 | 1.05 | 2.32 | 3.80 | 6.59 | 0.52 | 0.23 | 0.17 | 0.27 | 0.01 | 0.05 | 99.79 | 10.39 | 0.58 | 2.39 | 0.80 | 0.95 | ||
I19–22/4 | 64.00 | 0.41 | 16.56 | 2.35 | 1.86 | 0.10 | 0.80 | 3.04 | 4.96 | 5.12 | 0.38 | nd | 0.21 | 0.22 | nd | 0.05 | 100.06 | 10.08 | 0.97 | 2.69 | 0.83 | 0.86 | ||
I19–22/5 | 62.57 | 0.46 | 16.49 | 2.13 | 2.23 | 0.09 | 0.89 | 3.42 | 5.29 | 5.04 | 0.34 | 0.06 | 0.18 | 0.38 | nd | 0.06 | 99.63 | 10.33 | 1.05 | 2.44 | 0.86 | 0.81 | ||
I19–9 | 2 | 63.06 | 0.51 | 16.41 | 2.27 | 2.62 | 0.13 | 1.10 | 3.59 | 4.38 | 4.42 | 0.48 | 0.88 | 0.33 | 0.53 | 0.02 | 0.08 | 100.81 | 8.80 | 0.99 | 2.06 | 0.73 | 0.89 | |
M18–6 | 62.8 | 0.55 | 15.74 | 2.41 | 2.60 | 0.13 | 1.56 | 4.06 | 4.64 | 3.95 | 0.28 | 0.40 | 0.33 | 0.14 | nd | 0.06 | 99.65 | 8.59 | 1.17 | 0.37 | 0.75 | 0.86 | ||
I19–9/3 | 60.17 | 0.53 | 15.28 | 3.32 | 2.06 | 0.11 | 1.42 | 3.47 | 4.25 | 4.13 | 0.22 | 1.69 | 0.39 | 2.65 | 0.01 | 0.08 | 99.78 | 8.38 | 1.03 | 1.42 | 0.71 | 0.89 | ||
I19–9/5 | 61.20 | 0.62 | 15.27 | 3.65 | 2.73 | 0.12 | 1.86 | 3.34 | 3.77 | 4.45 | 0.58 | 1.28 | 0.45 | 1.03 | nd | 0.10 | 100.45 | 8.22 | 0.85 | 1.46 | 0.79 | 0.77 | ||
I19–9/6 | 60.15 | 0.59 | 15.20 | 3.49 | 2.77 | 0.14 | 1.68 | 4.26 | 4.43 | 4.36 | 0.56 | 1.18 | 0.44 | 1.45 | nd | 0.08 | 100.78 | 8.79 | 1.02 | 1.40 | 0.83 | 0.74 | ||
I19–9/7 | 60.11 | 0.61 | 15.35 | 3.66 | 2.69 | 0.15 | 1.92 | 4.48 | 4.49 | 4.91 | 0.24 | 0.27 | 0.53 | 0.40 | nd | 0.10 | 99.91 | 9.40 | 0.91 | 1.44 | 0.82 | 0.72 | ||
I19–10 | 59.97 | 0.78 | 15.21 | 3.82 | 2.59 | 0.15 | 1.77 | 4.71 | 4.49 | 4.71 | 0.34 | 0.22 | 0.53 | 0.33 | nd | 0.10 | 99.72 | 9.20 | 0.95 | 1.68 | 0.79 | 0.76 | ||
I19–11 | 60.28 | 0.66 | 15.68 | 4.06 | 2.36 | 0.16 | 1.34 | 4.54 | 4.50 | 4.66 | 0.40 | 0.46 | 0.48 | 0.38 | nd | 0.08 | 100.04 | 9.16 | 0.97 | 1.59 | 0.79 | 0.76 | ||
I19–11/2 | 61.29 | 0.67 | 15.49 | 4.12 | 2.01 | 0.14 | 1.69 | 4.48 | 4.52 | 4.40 | 0.30 | 0.42 | 0.48 | 0.63 | 0.02 | 0.08 | 100.74 | 8.92 | 1.03 | 1.65 | 0.80 | 0.84 | ||
I19–11/4 | 61.58 | 0.57 | 15.82 | 3.73 | 2.05 | 0.16 | 1.70 | 3.42 | 4.78 | 4.44 | 0.54 | 0.70 | 0.51 | 0.59 | 0.03 | 0.08 | 100.70 | 9.22 | 1.08 | 1.40 | 0.81 | 0.81 | ||
I19–11/5 | 61.51 | 0.63 | 15.67 | 3.71 | 2.33 | 0.13 | 2.19 | 3.66 | 4.68 | 4.56 | 0.34 | 0.25 | 0.48 | 0.57 | 0.01 | 0.09 | 100.81 | 9.24 | 1.03 | 1.49 | 0.84 | 0.77 | ||
I19–11/6 | 61.92 | 0.63 | 15.15 | 3.75 | 2.47 | 0.12 | 1.68 | 3.92 | 4.72 | 4.53 | 0.34 | 0.34 | 0.47 | 0.56 | 0.01 | 0.09 | 100.70 | 9.25 | 1.04 | 1.38 | 0.78 | 0.82 | ||
I19–12 | 61.54 | 0.62 | 15.54 | 3.52 | 2.29 | 0.14 | 2.29 | 3.79 | 4.48 | 4.36 | 0.48 | 0.33 | 0.44 | 0.58 | nd | 0.09 | 100.49 | 8.84 | 1.03 | 1.24 | 0.76 | 0.80 | ||
I19–21/2 | 60.47 | 0.73 | 15.48 | 3.99 | 2.72 | 0.13 | 2.39 | 4.12 | 4.14 | 4.56 | 0.38 | 0.78 | 0.37 | 0.16 | nd | 0.03 | 100.45 | 8.70 | 0.91 | 1.42 | 0.72 | 0.83 | ||
I19–21/3 | 60.44 | 0.74 | 15.90 | 4.18 | 2.30 | 0.11 | 2.09 | 4.25 | 4.02 | 4.46 | 0.54 | 0.86 | 0.39 | 0.32 | nd | 0.04 | 100.64 | 8.48 | 0.90 | 1.06 | 0.84 | 0.73 | ||
I19–21/5 | 58.81 | 0.69 | 14.81 | 3.62 | 3.41 | 0.13 | 2.68 | 4.26 | 4.45 | 4.77 | 0.34 | 0.54 | 0.57 | 0.22 | 0.03 | 0.1 | 99.43 | 9.22 | 0.93 | 1.72 | 0.76 | 0.82 | ||
I19–7 | 3 | 64.43 | 0.47 | 16.43 | 2.09 | 2.29 | 0.12 | 0.88 | 3.49 | 4.89 | 3.93 | 0.34 | 0.22 | 0.24 | 0.21 | nd | 0.08 | 100.11 | 8.82 | 1.24 | 2.41 | 0.75 | 0.88 | |
I19–13 | 62.77 | 0.58 | 15.20 | 2.88 | 3.39 | 0.10 | 1.75 | 3.27 | 4.96 | 3.71 | 0.30 | 0.39 | 0.44 | 0.59 | nd | 0.09 | 100.42 | 8.67 | 1.34 | 1.37 | 0.80 | 0.84 | ||
I19–14 | 63.14 | 0.55 | 16.39 | 2.64 | 2.49 | 0.09 | 1.37 | 3.75 | 4.56 | 4.01 | 0.36 | 0.40 | 0.26 | 0.11 | 0.01 | 0.01 | 100.14 | 8.57 | 1.14 | 1.89 | 0.72 | 0.88 | ||
I19–15 | 63.56 | 0.45 | 16.68 | 2.65 | 1.96 | 0.10 | 1.22 | 3.55 | 4.61 | 3.99 | 0.26 | 0.55 | 0.24 | 0.17 | nd | 0.02 | 100.01 | 8.60 | 1.16 | 2.21 | 0.71 | 0.91 | ||
I19–16 | 64.10 | 0.44 | 16.81 | 4.54 | 0.21 | 0.09 | 0.97 | 3.78 | 4.57 | 3.90 | 0.20 | 0.24 | 0.22 | nd | 0.01 | 0.03 | 100.11 | 8.47 | 1.17 | 2.98 | 0.70 | 0.90 | ||
I19–17 | 62.90 | 0.51 | 16.53 | 2.32 | 2.79 | 0.10 | 1.36 | 3.58 | 4.71 | 3.80 | 0.30 | 0.33 | 0.28 | 0.11 | nd | 0.03 | 99.65 | 8.51 | 1.24 | 1.86 | 0.72 | 0.90 | ||
I19–18 | 65.41 | 0.28 | 15.72 | 1.56 | 0.99 | 0.08 | 0.05 | 2.47 | 4.97 | 6.23 | 0.22 | 0.44 | 0.11 | 1.37 | 0.01 | 0.02 | 99.93 | 11.20 | 0.80 | 1.12 | 0.68 | 0.94 | ||
I19–20 | 62.00 | 0.53 | 16.22 | 2.13 | 3.30 | 0.12 | 3.33 | 3.47 | 4.41 | 3.46 | 0.28 | 0.41 | 0.30 | 0.44 | nd | 0.03 | 100.43 | 7.87 | 1.27 | 1.41 | 0.71 | 0.86 | ||
I19–20/2 | 62.79 | 0.40 | 16.27 | 1.54 | 3.21 | 0.13 | 2.39 | 4.06 | 4.61 | 3.59 | 0.30 | 0.20 | 0.30 | 0.70 | nd | 0.03 | 100.52 | 8.20 | 1.28 | 1.64 | 0.70 | 0.87 | ||
I19–20/3 | 63.27 | 0.46 | 16.54 | 1.32 | 3.24 | 0.13 | 1.85 | 4.04 | 4.68 | 3.63 | 0.28 | 0.05 | 0.26 | 0.49 | nd | 0.03 | 100.27 | 8.31 | 1.29 | 2.08 | 0.72 | 0.89 | ||
I19–20/4 | 63.66 | 0.44 | 16.43 | 2.13 | 2.16 | 0.12 | 1.37 | 3.61 | 4.68 | 3.80 | 0.34 | 0.49 | 0.22 | 0.16 | 0.01 | 0.03 | 99.65 | 8.48 | 1.23 | 1.79 | 0.71 | 0.86 | ||
I19–20/5 | 63.08 | 0.55 | 16.03 | 2.39 | 2.27 | 0.10 | 1.66 | 3.94 | 4.34 | 3.98 | 0.56 | 0.31 | 0.25 | 0.38 | 0.02 | 0.03 | 99.89 | 8.32 | 1.09 | 2.24 | 0.72 | 0.91 | ||
I19–21/6 | 62.85 | 0.44 | 16.67 | 2.72 | 1.99 | 0.10 | 1.14 | 3.43 | 4.72 | 3.98 | 0.50 | 0.40 | 0.26 | nd | nd | 0.08 | 99.28 | 8.70 | 1.19 | 2.35 | 0.69 | 0.92 | ||
I19–21/7 | 63.85 | 0.40 | 16.33 | 2.37 | 1.87 | 0.09 | 1.11 | 3.60 | 4.30 | 3.80 | 0.68 | 0.31 | 0.26 | nd | nd | 0.05 | 99.02 | 8.10 | 1.13 | 2.44 | 0.74 | 0.90 | ||
I19–21/8 | 64.04 | 0.38 | 16.74 | 2.45 | 1.95 | 0.09 | 1.00 | 3.36 | 4.99 | 3.90 | 0.28 | 0.22 | 0.27 | 0.05 | nd | 0.05 | 99.77 | 8.89 | 1.28 | 1.12 | 0.68 | 0.75 | ||
I19–24/2 | Taezhniy | 1 | 63.97 | 0.36 | 16.14 | 2.87 | 1.26 | 0.08 | 1.21 | 3.53 | 5.53 | 3.79 | 0.12 | 0.20 | 0.23 | 0.27 | nd | 0.08 | 99.67 | 9.32 | 1.46 | 2.42 | 0.82 | 0.82 |
I19–24/4 | 63.54 | 0.30 | 16.33 | 2.47 | 1.29 | 0.03 | 1.22 | 3.56 | 5.56 | 4.72 | 0.32 | nd | 0.24 | 0.17 | nd | 0.05 | 99.8 | 10.28 | 1.18 | 2.51 | 0.87 | 0.79 | ||
I19–26 | 63.92 | 0.42 | 15.93 | 2.62 | 1.37 | 0.07 | 1.15 | 2.8 | 6.15 | 4.79 | 0.14 | 0.03 | 0.24 | 0.27 | 0.01 | 0.05 | 99.96 | 10.94 | 1.28 | 2.44 | 0.96 | 0.78 | ||
I19–26/2 | 63.29 | 0.34 | 16.13 | 2.64 | 1.29 | 0.08 | 1.23 | 3.62 | 5.65 | 4.61 | 0.22 | 0.22 | 0.24 | 0.27 | nd | 0.08 | 99.91 | 10.26 | 1.23 | 2.43 | 0.89 | 0.77 | ||
I19–26/3 | 62.17 | 0.48 | 13.88 | 1.85 | 2.67 | 0.05 | 2.46 | 3.51 | 4.18 | 7.29 | 0.16 | 0.04 | 0.44 | 0.16 | nd | 0.08 | 99.42 | 11.47 | 0.57 | 1.24 | 1.06 | 0.66 | ||
I19–26/4 | 66.00 | 0.31 | 15.74 | 2.03 | 0.99 | 0.06 | 0.97 | 2.29 | 4.71 | 5.75 | 0.26 | nd | 0.19 | 0.28 | nd | 0.05 | 99.64 | 10.46 | 0.82 | 3.06 | 0.89 | 0.87 | ||
I19–26/5 | 59.71 | 0.57 | 14.03 | 3.23 | 2.15 | 0.09 | 2.86 | 4.75 | 3.93 | 7.12 | 0.24 | nd | 0.50 | 0.44 | 0.02 | 0.12 | 99.76 | 11.05 | 0.55 | 1.14 | 1.01 | 0.62 | ||
I19–29 | 62.28 | 0.52 | 15.03 | 3.19 | 1.65 | 0.11 | 1.06 | 2.91 | 5.61 | 7.22 | 0.26 | 0.04 | 0.24 | 0.34 | 0.03 | 0.09 | 100.58 | 12.83 | 0.78 | 2.13 | 1.13 | 0.67 | ||
I19–29/2 | 61.24 | 0.53 | 16.00 | 3.50 | 2.11 | 0.11 | 1.18 | 3.68 | 5.10 | 5.37 | 0.46 | 0.28 | 0.28 | 0.55 | 0.01 | 0.01 | 100.41 | 10.47 | 0.95 | 1.95 | 0.89 | 0.77 | ||
I19–29/4 | 65.06 | 0.20 | 16.47 | 1.68 | 1.00 | 0.06 | 0.61 | 1.74 | 5.49 | 6.19 | 0.10 | 0.27 | 0.09 | 0.52 | 0.01 | 0.03 | 99.52 | 11.68 | 0.89 | 4.09 | 0.95 | 0.87 | ||
I19–29/5 | 66.78 | 0.22 | 16.25 | 1.39 | 1.15 | 0.05 | 0.56 | 1.17 | 5.20 | nd | 0.30 | 0.21 | 0.06 | 0.25 | 0.01 | 0.01 | 99.73 | 11.32 | 0.85 | 4.13 | 0.93 | 0.94 | ||
I19–30/2 | 64.42 | 0.44 | 16.38 | 2.69 | 1.43 | 0.06 | 0.79 | 2.83 | 4.95 | 4.59 | 0.32 | 0.26 | 0.20 | 0.25 | nd | 0.01 | 99.62 | 9.54 | 1.08 | 2.85 | 0.80 | 0.90 | ||
I19–30/3 | 65.14 | 0.45 | 15.92 | 2.53 | 1.37 | 0.06 | 0.84 | 2.91 | 4.82 | 4.63 | 0.18 | 0.21 | 0.21 | 0.33 | nd | 0.04 | 99.64 | 9.45 | 1.04 | 2.8 | 0.81 | 0.87 | ||
I19–30/4 | 64.90 | 0.41 | 15.37 | 2.90 | 1.66 | 0.06 | 1.14 | 2.63 | 4.76 | 5.04 | 0.30 | 0.28 | 0.31 | 0.4 | 0.01 | 0.06 | 100.23 | 9.80 | 0.94 | 2.17 | 0.86 | 0.85 | ||
I19–30/5 | 61.91 | 0.47 | 15.96 | 2.18 | 3.75 | 0.09 | 1.02 | 3.50 | 4.80 | 4.43 | 0.30 | 0.05 | 0.26 | 0.58 | 0.02 | 0.07 | 99.39 | 9.23 | 1.08 | 1.72 | 0.79 | 0.84 | ||
I19–27/2 | 2 | 67.48 | 0.19 | 15.97 | 1.68 | 1.00 | 0.05 | 0.75 | 1.85 | 5.09 | 4.91 | 0.26 | 0.14 | 0.13 | 0.49 | 0.02 | 0.05 | 100.06 | 10.00 | 1.04 | 3.64 | 0.86 | 0.94 | |
I19–27/4 | 67.69 | 0.14 | 16.06 | 1.75 | 0.70 | 0.04 | 0.80 | 0.66 | 5.61 | 5.06 | 0.28 | 0.13 | 0.13 | 0.55 | nd | 0.04 | 99.68 | 10.67 | 1.11 | 3.89 | 1.00 | 1.01 | ||
I19–27/5 | 66.43 | 0.22 | 15.85 | 2.67 | 0.17 | 0.08 | 0.33 | 1.74 | 5.94 | 5.90 | 0.08 | 0.42 | 0.12 | 0.14 | 0.02 | 0.01 | 100.12 | 11.84 | 1.01 | 3.89 | 0.92 | 0.82 | ||
T19–27/6 | 67.22 | 0.20 | 15.82 | 1.21 | 1.39 | 0.05 | 0.24 | 1.13 | 6.00 | 6.12 | 0.58 | 0.34 | 0.11 | 0.29 | 0.01 | 0.01 | 100.72 | 12.12 | 0.98 | 5.70 | 1.02 | 0.85 | ||
I19–27/7 | 65.66 | 0.20 | 15.63 | 1.88 | 1.00 | 0.09 | 0.42 | 1.91 | 6.28 | 6.33 | 0.26 | 0.01 | 0.13 | 0.11 | 0.02 | 0.01 | 99.95 | 12.61 | 0.99 | 4.73 | 1.04 | 0.76 | ||
I19–28 | 64.71 | 0.14 | 16.50 | 1.22 | 1.11 | 0.06 | 0.57 | 1.64 | 6.25 | 6.59 | 0.10 | 0.32 | 0.07 | 0.18 | nd | 0.01 | 99.47 | 12.84 | 0.95 | 4.24 | 1.10 | 0.81 | ||
I19–28/2 | 66.26 | 0.18 | 16.23 | 1.68 | 0.57 | 0.06 | 0.40 | 0.83 | 5.75 | 7.86 | 0.26 | 0.18 | 0.06 | 0.28 | nd | 0.09 | 100.69 | 13.61 | 0.73 | 4.35 | 1.06 | 0.83 | ||
I19–28/3 | 62.32 | 0.44 | 15.45 | 2.86 | 1.41 | 0.10 | 0.92 | 2.91 | 5.83 | 7.2 | 0.18 | 0.31 | 0.20 | 0.17 | 0.01 | 0.04 | 100.35 | 13.03 | 0.81 | 5.63 | 1.11 | 0.68 | ||
I19–28/4 | 66.05 | 0.20 | 15.35 | 1.42 | 1.23 | 0.06 | 0.50 | 1.27 | 5.55 | 8.12 | 0.18 | 0.08 | 0.07 | 0.24 | nd | 0.03 | 100.35 | 13.67 | 0.68 | 2.51 | 1.12 | 0.76 |
Sample | Massif | Phase | Cu | Sn | Zn | Pb | Ge | Cr | V | Sc | Ba | Sr | Rb | Nb | Zr | B | Ni | Co | K/Rb | Rb/Sr | Ba/Rb |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
I19–19/3 | Medvedev | 1 | 9.02 | bdl | 100 | 39.2 | bdl | 71.6 | 88 | 8.35 | 1260 | 870 | 102.6 | 11.5 | 200 | 8.8 | 11.2 | 5.3 | 175.98 | 0.12 | 12.28 |
I19–19/4 | 8.27 | bdl | 61.5 | 48.9 | bdl | 160 | 84.2 | 7.93 | 1780 | 990 | 107.1 | 8.44 | 210 | 7.92 | 11.3 | 5.1 | 201.53 | 0.11 | 16.62 | ||
I19–19/6 | 81.9 | bdl | 53.2 | 32.2 | bdl | 300 | 89 | 7.83 | 3100 | 770 | 85.5 | 5.22 | 140 | bdl | 23.3 | 4.96 | 290.31 | 0.11 | 36.26 | ||
I19–19/7 | 21.6 | bdl | 60.8 | 49.4 | bdl | 110 | 99.1 | 9.16 | 2030 | 840 | 104.4 | 8.52 | 170 | 8.28 | 8.64 | 5.62 | 203.56 | 0.12 | 19.44 | ||
I19–19 12 | 7.54 | bdl | bdl | 40.7 | bdl | 140 | 77.3 | 8.12 | 2000 | 780 | 87.3 | 7.24 | 130 | bdl | 10.5 | 4.51 | 252.94 | 0.11 | 22.91 | ||
I19–22 | 14.9 | bdl | 73 | 21.2 | bdl | 110 | 94.1 | 10.3 | 1700 | 760 | 89.1 | 9.3 | 110 | bdl | 11.9 | 6.54 | 247.83 | 0.12 | 19.08 | ||
I19–22/2 | 21.4 | bdl | bdl | 20.8 | bdl | 25.4 | 89.1 | 8.67 | 2000 | 820 | 89.1 | 8.69 | 140 | bdl | 8.31 | 6.35 | 252.49 | 0.11 | 22.45 | ||
I19–22/3 | 36.7 | bdl | bdl | 20.5 | bdl | 57.8 | 93.2 | 6.33 | 2600 | 1010 | 103.2 | 9 | 157 | 8.83 | 14 | 5.8 | 264.93 | 0.1 | 25.18 | ||
I19–22/4 | 5.63 | bdl | 67.6 | 27.8 | bdl | 31.5 | 96.6 | 7.8 | 2100 | 860 | 87.3 | 10.4 | 120 | bdl | 8.82 | 4.67 | 243.43 | 0.1 | 24.05 | ||
I19–22/5 | 6.03 | bdl | −58 | 22.4 | bdl | 29 | 93.3 | 7.27 | 2300 | 1000 | 103 | 9.9 | 171 | bdl | 8.57 | 5.62 | 203.02 | 0.1 | 22.32 | ||
I19–9 | 2 | 18.6 | bdl | 51 | 31.7 | bdl | 380 | 120 | 16 | 2100 | 920 | 85.5 | 5.32 | 260 | 8.11 | 27.6 | 12.5 | 214.58 | 0.09 | 24.56 | |
I19–9/3 | bdl | bdl | 77.6 | 13.8 | bdl | 40 | 93.2 | 13.3 | 1500 | 590 | 79.2 | 10.6 | 200 | 10.9 | 18 | 12.2 | 216.45 | 0.13 | 18.94 | ||
I19–9/5 | 8.09 | bdl | 56.3 | 15.4 | bdl | 320 | 120 | 17.4 | 1500 | 940 | 89.1 | 4.73 | 270 | bdl | 29.3 | 11.7 | 207.3 | 0.09 | 16.84 | ||
I19–9/6 | 30.3 | bdl | 70.9 | 31.3 | bdl | 260 | 97.7 | 15.4 | 1000 | 750 | 81.9 | 7.84 | 210 | 8.89 | 34.7 | 13.3 | 220.97 | 0.11 | 12.21 | ||
I19–9/7 | 16.5 | bdl | 77.7 | 32.8 | bdl | 69.3 | 130 | 18.5 | 2800 | 1000 | 94.5 | 7.97 | 180 | 6.16 | 26 | 18.1 | 215.66 | 0.09 | 29.63 | ||
I19–10 | 25.5 | bdl | 66.5 | 27.3 | bdl | 50.3 | 120 | 18.1 | 2200 | 1000 | 93.6 | 4.12 | 190 | 8.99 | 22.6 | 16.2 | 208.87 | 0.09 | 23.5 | ||
I19–11 | 27.9 | bdl | 95.3 | 54.8 | bdl | 200 | 140 | 16.7 | 2100 | 900 | 93.6 | 4.96 | 200 | 8.41 | 26.8 | 16.6 | 206.65 | 0.1 | 22.44 | ||
I19–11/2 | 25.7 | bdl | 67.6 | 22.8 | bdl | 110 | 130 | 18.2 | 1600 | 950 | 83.7 | 8.28 | 210 | bdl | 26.8 | 17.4 | 218.2 | 0.09 | 19.12 | ||
I19–11/4 | 15.5 | bdl | 68.3 | 20.2 | bdl | 44.9 | 110 | 15.8 | 1500 | 770 | 86.4 | 7.94 | 210 | bdl | 22.3 | 12.9 | 213.3 | 0.11 | 17.36 | ||
I19–11/5 | 82 | bdl | 99 | 25.5 | bdl | 152 | 120 | 16.5 | 2300 | 1000 | 85.5 | 9.52 | 180 | bdl | 24.1 | 15.5 | 221.37 | 0.09 | 26.9 | ||
I19–11/6 | 100 | bdl | 81.9 | 28.3 | bdl | 103 | 120 | 16.8 | 1600 | 870 | 81.9 | 3.66 | 140 | bdl | 20 | 14 | 229.58 | 0.09 | 19.54 | ||
I19–12 | 30.4 | bdl | 110 | 27.1 | bdl | 132 | 110 | 15.3 | 1700 | 820 | 82.8 | 3.94 | 170 | 10.1 | 21.5 | 13.8 | 218.57 | 0.1 | 20.53 | ||
I19–21/2 | 29.1 | bdl | 100 | 29.2 | bdl | 180 | 130 | 17.9 | 1700 | 900 | 101.7 | 8.73 | 170 | bdl | 29.9 | 15.4 | 186.11 | 0.11 | 16.72 | ||
I19–21/3 | 15.3 | bdl | 88.5 | 27.7 | bdl | 130 | 120 | 17.3 | 1600 | 890 | 108 | 7.57 | 210 | bdl | 23.8 | 14.1 | 171.41 | 0.12 | 14.81 | ||
I19–21/5 | 65 | bdl | 100 | 33.3 | bdl | 94 | 130 | 20.2 | 2000 | 917 | 113.4 | 6.8 | 220 | bdl | 35 | 20 | 174.65 | 0.12 | 17.64 | ||
M18–6 | 13.9 | bdl | 68.6 | 26 | bdl | 150 | 85.6 | 9.55 | 2120 | 1100 | 71.5 | 7.87 | 120 | bdl | 11.8 | 9.15 | 229.38 | 0.06 | 29.66 | ||
I19–7 | 3 | 9.44 | bdl | 68.9 | 30.7 | bdl | 27.6 | 63.8 | 8.39 | 1600 | 1030.2 | 78.9 | 10.1 | 150 | bdl | 9.54 | 7.42 | 206.81 | 0.08 | 20.29 | |
I19–13 | 24.1 | bdl | 82.5 | 27 | bdl | 43.5 | 68.9 | 10.3 | 1700 | 850 | 61.2 | 7.65 | 150 | 8.54 | 13.6 | 9.07 | 251.62 | 0.07 | 27.78 | ||
I19–14 | 14.6 | bdl | 66 | 35.4 | bdl | 54.6 | 69.5 | 10.4 | 1700 | 1000 | 91.8 | 10.8 | 190 | bdl | 14 | 8.51 | 181.31 | 0.09 | 18.52 | ||
I19–15 | 10 | bdl | bdl | 26.1 | bdl | 47.6 | 66.1 | 9.03 | 1900 | 1030 | 82 | 8.6 | 170 | bdl | 11.8 | 6.71 | 201.92 | 0.08 | 23.16 | ||
I19–16 | 10.3 | bdl | 65.1 | 34.5 | bdl | 32.1 | 72.5 | 8.45 | 1800 | 1000 | 87.3 | 6.68 | 160 | 8.2 | 9.63 | 7.31 | 185.43 | 0.09 | 20.62 | ||
I19–17 | 17.4 | bdl | 71.5 | 29.6 | bdl | 110 | 73.5 | 9.84 | 2000 | 1000 | 73.8 | 6.39 | 160 | 8.88 | 14 | 7.93 | 213.72 | 0.07 | 27.1 | ||
I19–20 | 36.4 | bdl | 79.8 | 34 | bdl | 51.1 | 80.6 | 10.5 | 1600 | 780 | 66.6 | 9.35 | 150 | bdl | 12.2 | 10.1 | 215.64 | 0.09 | 24.02 | ||
I19–20/2 | 23.9 | bdl | 74.6 | 36.4 | bdl | 260 | 72.7 | 11.3 | 2000 | 1060 | 79.5 | 6.15 | 140 | bdl | 13.3 | 8.27 | 187.32 | 0.08 | 25.14 | ||
I19–20/3 | 19.4 | bdl | 64 | 28.4 | bdl | 61.1 | 66.7 | 9.73 | 1900 | 1000 | 77.4 | 5.32 | 130 | bdl | 11.9 | 8.99 | 194.67 | 0.08 | 24.55 | ||
I19–20/4 | 10.5 | bdl | 57.8 | 25.7 | bdl | 36.1 | 64.4 | 8.36 | 1600 | 900 | 80.1 | 10.5 | 150 | bdl | 9.64 | 7.35 | 196.91 | 0.09 | 19.98 | ||
I19–20/5 | 17.8 | bdl | 78.7 | 32.2 | bdl | 36.5 | 65.1 | 7.86 | 1900 | 880 | 91.8 | 8.02 | 120 | bdl | 12.3 | 9.95 | 179.96 | 0.1 | 20.7 | ||
I19–21/6 | 17.3 | bdl | 61.7 | 35.8 | bdl | 110 | 74.7 | 8.92 | 1600 | 820 | 71.1 | 7.63 | 150 | 66.2 | 11.5 | 8.28 | 232.35 | 0.09 | 22.5 | ||
I19–21/7 | 41.9 | bdl | 82.2 | 26.8 | bdl | 27.6 | 66.9 | 8.92 | 1500 | 940 | 67.5 | 8.78 | 190 | 9.49 | 7.99 | 7.35 | 233.67 | 0.07 | 22.22 | ||
I19–21/8 | 19.7 | bdl | bdl | 23.9 | bdl | 33.8 | 65.9 | 8.55 | 1500 | 960 | 69.3 | 8.75 | 160 | bdl | 10.6 | 6.74 | 233.59 | 0.07 | 21.65 | ||
I19–24/2 | Taezhniy | 1 | 20 | bdl | bdl | 16 | bdl | 180 | 85 | 7.7 | 2000 | 860 | 66 | 8.9 | 98 | bdl | 17 | 8.2 | 476.7 | 0.08 | 30.3 |
I19–24/4 | 11 | bdl | bdl | 16 | bdl | 48 | 85 | 7.8 | 2100 | 1000 | 70 | 6.5 | 120 | bdl | 14 | 7.2 | 559.74 | 0.07 | 30 | ||
I19–26 | 7.5 | bdl | bdl | 15 | bdl | 37 | 79 | 9.2 | 2500 | 940 | 82.8 | 9.1 | 130 | bdl | 11 | 6.9 | 480.23 | 0.09 | 30.19 | ||
I19–26/2 | 7.4 | bdl | bdl | 15 | bdl | 140 | 75 | 7.6 | 2500 | 910 | 76.5 | 11 | 95 | bdl | 16 | 6.9 | 500.25 | 0.08 | 32.68 | ||
I19–26/3 | 20 | bdl | bdl | 10 | 2.4 | 160 | 120 | 16 | 1200 | 330 | 223.2 | 6.2 | 120 | bdl | 35 | 9.1 | 271.13 | 0.68 | 5.38 | ||
I19–26/4 | bdl | bdl | bdl | 30 | bdl | 92 | 66 | 5.8 | 2000 | 790 | 93.6 | 8.8 | 120 | bdl | 12 | 4.5 | 509.96 | 0.12 | 21.37 | ||
I19–26/5 | 8 | bdl | bdl | 13 | bdl | 220 | 170 | 18 | 1900 | 640 | 139.5 | 6.9 | 150 | bdl | 34 | 15 | 423.69 | 0.22 | 13.62 | ||
I19–29 | 5.6 | bdl | bdl | 19 | bdl | 220 | 150 | 12 | 1800 | 670 | 117 | 6.3 | 150 | bdl | 17 | 8.4 | 512.27 | 0.17 | 15.38 | ||
I19–29/2 | 17 | bdl | bdl | 20 | bdl | 87 | 110 | 13 | 2300 | 950 | 82.8 | 6.7 | 160 | bdl | 18 | 10 | 538.38 | 0.09 | 27.78 | ||
I19–29/4 | 8.1 | bdl | bdl | 29 | bdl | 45 | 71 | 4.9 | 2300 | 720 | 108 | 6.1 | 81 | bdl | 11 | 5.2 | 475.79 | 0.15 | 21.3 | ||
I19–29/5 | 6.1 | bdl | bdl | 38 | bdl | 190 | 58 | 3.3 | 2700 | 640 | 117 | 11 | 91 | bdl | 16 | 3.7 | 434.22 | 0.18 | 23.08 | ||
I19–30/2 | 16 | bdl | bdl | 22 | bdl | 28 | 76 | 8.2 | 2200 | 910 | 72 | 11 | 130 | bdl | 12 | 6.7 | 529.21 | 0.08 | 30.56 | ||
I19–30/3 | 38 | bdl | bdl | 17 | bdl | 37 | 75 | 8.7 | 2300 | 900 | 94 | 7.5 | 120 | bdl | 12 | 7 | 408.88 | 0.1 | 24.47 | ||
I19–30/4 | 32 | bdl | bdl | 21 | bdl | 230 | 100 | 12 | 2200 | 980 | 83.7 | 6.4 | 130 | bdl | 19 | 8.7 | 499.86 | 0.09 | 26.28 | ||
I19–30/5 | 28 | bdl | bdl | 19 | bdl | 140 | 90 | 12 | 2200 | 1100 | 73.8 | 10 | 160 | bdl | 32 | 9 | 498.3 | 0.07 | 29.81 | ||
I19–27/2 | 2 | 5.1 | bdl | bdl | 31 | bdl | 190 | 42 | 4.6 | 1600 | 770 | 108 | 8.7 | 88 | bdl | 9.4 | 3.4 | 377.4 | 0.14 | 14.81 | |
I19–27/7 | 10 | bdl | bdl | 17 | bdl | 48 | 65 | 4.4 | 1900 | 710 | 107 | 8.4 | 110 | bdl | 10 | 4.4 | 488.85 | 0.15 | 17.68 | ||
I19–27/3 | 5.5 | bdl | bdl | 18 | bdl | 27 | 37 | 2.6 | 450 | 230 | 90 | 11 | 190 | bdl | 7 | bdl | 473.17 | 0.39 | 5 | ||
I19–27/4 | bdl | bdl | bdl | 25 | bdl | 130 | 47 | 4.9 | 1800 | 790 | 117 | 7.4 | 110 | bdl | 7.6 | bdl | 359.01 | 0.15 | 15.38 | ||
I19–27/5 | 5 | bdl | bdl | 30 | bdl | 230 | 45 | 4.4 | 1800 | 730 | 123 | 7.1 | 110 | bdl | 11 | 3.2 | 399.73 | 0.17 | 14.69 | ||
I19–27/6 | 5.8 | bdl | bdl | 31 | bdl | 280 | 44 | −3.3 | 1700 | 610 | 125 | 9 | 100 | bdl | 11 | bdl | 407.24 | 0.2 | 13.63 | ||
I19–28 | 7.7 | bdl | bdl | 28 | bdl | 48 | 66 | 4.4 | 3000 | 1000 | 126 | 12 | 81 | bdl | 13 | 4.7 | 434.17 | 0.13 | 23.81 | ||
I19–28/2 | bdl | bdl | bdl | 30 | bdl | 47 | 68 | 4.1 | 2200 | 770 | 117 | 7 | 80 | bdl | 8.5 | bdl | 557.68 | 0.15 | 18.8 | ||
I19–28/3 | 7.9 | bdl | bdl | 24 | bdl | 44 | 130 | 9 | 2300 | 780 | 117 | 5.9 | 120 | bdl | 14 | 7.8 | 510.85 | 0.15 | 19.66 | ||
I19–28/4 | 14 | bdl | bdl | 19 | bdl | 67 | 73 | 3.6 | 1700 | 570 | 91.8 | 8 | 100 | bdl | 13 | 3.7 | 734.28 | 0.16 | 18.52 |
Sample | I19–22/3 | I19–22/5 | M18–9 | M18–6 | I19–21/5 | I-19–7 | I19–20/2 | M18–7 | I19–15 | I19–24/2 | I19–24/4 | I19–30/3 | I19–27/5 | I19–27/6 | I19–27/7 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Massif | Medvedev | Taezhniy | |||||||||||||
Phase | 1 | 2 | 3 | 1 | 2 | ||||||||||
Rb | 103 | 103 | 100 | 71 | 113 | 79 | 80 | 106 | 82 | 66 | 70 | 94 | 123 | 125 | 107 |
Sr | 1010 | 1000 | 841 | 1100 | 917 | 1030 | 1060 | 1100 | 1030 | 1110 | 1150 | 1080 | 894 | 759 | 828 |
Y | 22 | 23 | 24 | 18.7 | 22 | 17.2 | 18.7 | 22 | 18.5 | 16.2 | 17 | 22 | 9.3 | 8.3 | 10.5 |
Zr | 157 | 171 | 175 | 138 | 169 | 157 | 130 | 166 | 155 | 130 | 142 | 164 | 119 | 125 | 124 |
Nb | 9 | 9.9 | 10.1 | 7.3 | 8.1 | 7.4 | 7.1 | 7.8 | 7.3 | 7 | 7 | 8.9 | 6.5 | 6.3 | 6.2 |
Cs | 2.7 | 4 | 1.99 | 4 | 3.3 | 3.8 | 2.7 | 6.8 | 5.3 | 0.85 | 0.4 | 0.88 | 1.25 | 0.96 | 0.89 |
Ba | 3130 | 1970 | 2150 | 1880 | 2050 | 1860 | 1810 | 2060 | 1980 | 1910 | 2060 | 2220 | 1830 | 1660 | 1590 |
La | 33 | 40 | 39 | 24 | 35 | 22 | 24 | 32 | 25 | 22 | 23 | 33 | 12.7 | 13.4 | 14.6 |
Ce | 64 | 74 | 71 | 49 | 68 | 46 | 47 | 65 | 52 | 43 | 45 | 64 | 24 | 23 | 28 |
Pr | 7.5 | 8.7 | 8.9 | 6.1 | 8.4 | 5.7 | 6.1 | 8 | 6.2 | 5.3 | 5.7 | 7.9 | 2.9 | 2.9 | 3.3 |
Nd | 28 | 34 | 33 | 26 | 33 | 23 | 25 | 32 | 25 | 21 | 22 | 30 | 11.5 | 10.8 | 12.9 |
Sm | 5.6 | 6.3 | 6.4 | 5.3 | 6.8 | 4.4 | 5.1 | 6.3 | 4.8 | 4.3 | 4.5 | 5.6 | 2.4 | 2.3 | 2.5 |
Eu | 1.52 | 1.73 | 1.78 | 1.43 | 1.9 | 1.29 | 1.37 | 1.68 | 1.32 | 1.11 | 1.19 | 1.61 | 0.66 | 0.57 | 0.73 |
Gd | 4.8 | 5.4 | 5.7 | 4.3 | 5.5 | 3.9 | 4.2 | 5.3 | 4.3 | 3.3 | 3.7 | 5.2 | 2.1 | 1.79 | 2.2 |
Tb | 0.68 | 0.71 | 0.75 | 0.59 | 0.76 | 0.53 | 0.57 | 0.7 | 0.6 | 0.45 | 0.52 | 0.65 | 0.27 | 0.24 | 0.3 |
Dy | 3.7 | 4.1 | 4.2 | 3.3 | 3.9 | 2.9 | 3.3 | 3.7 | 3.2 | 2.7 | 2.7 | 3.7 | 1.44 | 1.23 | 1.68 |
Ho | 0.74 | 0.78 | 0.84 | 0.68 | 0.81 | 0.6 | 0.65 | 0.77 | 0.65 | 0.52 | 0.58 | 0.7 | 0.29 | 0.26 | 0.33 |
Er | 2 | 2.2 | 2.4 | 1.9 | 2.2 | 1.64 | 1.84 | 2.1 | 1.85 | 1.53 | 1.61 | 2.1 | 0.89 | 0.78 | 0.98 |
Tm | 0.33 | 0.33 | 0.34 | 0.27 | 0.33 | 0.24 | 0.27 | 0.3 | 0.27 | 0.23 | 0.24 | 0.3 | 0.14 | 0.12 | 0.15 |
Yb | 2 | 2.2 | 2.2 | 1.74 | 2 | 1.57 | 1.74 | 1.88 | 1.7 | 1.5 | 1.58 | 1.92 | 0.94 | 0.78 | 1 |
Lu | 0.32 | 0.32 | 0.32 | 0.26 | 0.31 | 0.24 | 0.26 | 0.28 | 0.26 | 0.23 | 0.23 | 0.28 | 0.14 | 0.12 | 0.15 |
Hf | 4 | 4.1 | 4.3 | 3.6 | 4.2 | 3.9 | 3.3 | 4.1 | 3.8 | 3.3 | 3.4 | 4 | 3.3 | 3.3 | 3.5 |
Ta | 0.4 | 0.43 | 0.46 | 0.34 | 0.43 | 0.37 | 0.34 | 0.39 | 0.37 | 0.34 | 0.34 | 0.4 | 0.28 | 0.27 | 0.28 |
Th | 10.3 | 12.4 | 12 | 7.1 | 9.7 | 7.4 | 6.8 | 8.7 | 7.7 | 5.5 | 6.2 | 8.9 | 7.1 | 5.5 | 8.6 |
U | 3.2 | 3.2 | 3.1 | 1.65 | 1.64 | 1.67 | 1.84 | 2.3 | 1.78 | 2.2 | 2.8 | 3.3 | 1.65 | 1.5 | 1.84 |
La/Yb | 16.01 | 18 | 17.84 | 13.86 | 17.08 | 14.17 | 13.97 | 17.1 | 14.98 | 14.42 | 14.84 | 16.93 | 13.5 | 17.14 | 14.58 |
Ce/Yb | 31.57 | 33.44 | 32.07 | 28.39 | 33.74 | 28.97 | 27.16 | 34.61 | 30.32 | 28.9 | 28.71 | 33.21 | 25.83 | 29.67 | 28.48 |
Rb/Sr | 0.10 | 0.10 | 0.12 | 0.06 | 0.12 | 0.08 | 0.08 | 0.10 | 0.08 | 0.06 | 0.06 | 0.09 | 0.14 | 0.16 | 0.13 |
Nb/La | 0.27 | 0.25 | 0.26 | 0.3 | 0.23 | 0.33 | 0.29 | 0.24 | 0.29 | 0.32 | 0.3 | 0.27 | 0.51 | 0.47 | 0.42 |
Th/U | 3.2 | 3.83 | 3.93 | 4.31 | 5.89 | 4.43 | 3.69 | 3.73 | 4.34 | 2.46 | 2.19 | 2.66 | 4.29 | 3.66 | 4.69 |
Y/Nb | 2.41 | 2.33 | 2.43 | 2.54 | 2.77 | 2.32 | 2.64 | 2.78 | 2.52 | 2.31 | 2.43 | 2.43 | 1.43 | 1.33 | 1.7 |
Eu/Eu* | 0.9 | 0.91 | 0.9 | 0.92 | 0.95 | 0.95 | 0.9 | 0.88 | 0.89 | 0.9 | 0.88 | 0.91 | 0.89 | 0.85 | 0.95 |
∑REE | 154.19 | 180.77 | 176.83 | 124.87 | 168.91 | 114.01 | 121.4 | 160.01 | 127.15 | 123.65 | 130.25 | 177.95 | 69.97 | 66.89 | 79.69 |
Spot Name | Massif | % comm 206 | ppm U | Ppm Th | 232Th/238U | ppm Rad 206Pb | 204corr 206Pb/238U Age | 1s err | % Discordant | Total238/206 | % err | Total207/206 | % err | 238/206r | % err | 207r/206r | % err | 207r/235 | % err | 206r/238 | % err | err corr |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
I19–22 2.1 | Medv. | 0.06 | 919 | 147 | 0.17 | 14.3 | 115.6 | 1.8 | 62 | 55.25 | 1.6 | 0.0503 | 1.4 | 55.29 | 1.6 | 0.050 | 1.6 | 0.12 | 2.2 | 0.018 | 1.6 | 0.704 |
I19–22 2.2 | 0.00 | 1052 | 148 | 0.15 | 17.2 | 121.2 | 1.9 | −22 | 52.68 | 1.6 | 0.0479 | 1.3 | 52.68 | 1.6 | 0.048 | 1.3 | 0.13 | 2.1 | 0.019 | 1.6 | 0.765 | |
I19–22 8.1 | 0.13 | 665 | 114 | 0.18 | 11.0 | 123.1 | 2.0 | −39 | 51.80 | 1.6 | 0.0486 | 1.7 | 51.87 | 1.6 | 0.048 | 2.1 | 0.13 | 2.6 | 0.019 | 1.6 | 0.614 | |
I19–22 9.2 | 0.21 | 437 | 175 | 0.41 | 7.1 | 120.3 | 2.0 | −32 | 53.00 | 1.7 | 0.0493 | 2.1 | 53.11 | 1.7 | 0.048 | 2.8 | 0.12 | 3.2 | 0.019 | 1.7 | 0.519 | |
I19–22 10.1 | 7.71 | 298 | 96 | 0.33 | 5.6 | 129.9 | 2.5 | 310 | 45.34 | 1.7 | 0.1181 | 1.8 | 49.13 | 1.9 | 0.058 | 13.6 | 0.16 | 13.8 | 0.020 | 1.9 | 0.142 | |
I19–22 11.1 | nd | 170 | 65 | 0.40 | 2.9 | 127.2 | 2.2 | 38 | 50.16 | 1.8 | 0.0496 | 3.3 | 50.16 | 1.8 | 0.050 | 3.3 | 0.14 | 3.7 | 0.020 | 1.8 | 0.476 | |
I19–15 2.1 | Medv. | 0.06 | 698 | 7 | 0.01 | 11.3 | 120.2 | 1.9 | −1 | 53.10 | 1.6 | 0.0489 | 1.7 | 53.14 | 1.6 | 0.048 | 1.8 | 1.13 | 2.4 | 0.019 | 1.6 | 0.672 |
I19–15 3.1 | 0.16 | 447 | 4 | 0.01 | 6.9 | 114.2 | 1.9 | nd | 55.87 | 1.6 | 0.0495 | 2.1 | 55.96 | 1.6 | 0.048 | 2.6 | 0.12 | 3.1 | 0.018 | 1.6 | 0.527 | |
I19–15 4.1 | 0.08 | 542 | 6 | 0.01 | 8.9 | 121.3 | 2.1 | 26 | 52.60 | 1.7 | 0.0498 | 1.9 | 52.64 | 1.7 | 0.049 | 2.1 | 0.13 | 2.7 | 0.019 | 1.7 | 0.640 | |
I19–15 5.1 | nd | 1020 | 20 | 0.02 | 16.5 | 120.3 | 1.9 | −31 | 53.07 | 1.6 | 0.0477 | 1.4 | 53.07 | 1.6 | 0.048 | 1.4 | 0.12 | 2.1 | 0.019 | 1.6 | 0.750 | |
I19–15 6.1 | 0.13 | 1237 | 20 | 0.02 | 20.0 | 119.8 | 1.9 | 28 | 53.22 | 1.6 | 0.0501 | 1.2 | 53.29 | 1.6 | 0.049 | 1.5 | 0.13 | 2.2 | 0.019 | 1.6 | 0.723 | |
I19–15 8.1 | 0.07 | 478 | 4 | 0.01 | 7.3 | 113.5 | 1.9 | 3 | 56.25 | 1.7 | 0.0489 | 2.1 | 56.29 | 1.7 | 0.048 | 2.2 | 0.12 | 2.8 | 0.018 | 1.7 | 0.599 | |
I19–24 3.1 | Taezh. | nd | 647 | 38 | 0.06 | 10.3 | 118.4 | 1.9 | 38 | 53.95 | 1.6 | 0.0493 | 1.8 | 53.95 | 1.6 | 0.049 | 1.8 | 0.13 | 2.4 | 0.019 | 1.6 | 0.667 |
I19–24 4.1 | 0.05 | 948 | 345 | 0.38 | 15.0 | 117.7 | 1.9 | −27 | 54.23 | 1.6 | 0.0481 | 1.5 | 54.26 | 1.6 | 0.048 | 1.6 | 0.12 | 2.3 | 0.018 | 1.6 | 0.703 | |
I19–24 5.1 | 0.16 | 304 | 122 | 0.41 | 4.8 | 118.2 | 2.0 | −22 | 53.96 | 1.7 | 0.0491 | 2.6 | 54.05 | 1.7 | 0.048 | 3.2 | 0.12 | 3.6 | 0.019 | 1.7 | 0.471 | |
I19–24 6.1 | nd | 898 | 344 | 0.40 | 14.3 | 118.5 | 1.9 | 36 | 53.91 | 1.6 | 0.0493 | 1.5 | 53.91 | 1.6 | 0.049 | 1.5 | 0.13 | 2.2 | 0.019 | 1.6 | 0.726 | |
I19–24 8.1 | 0.08 | 1481 | 101 | 0.07 | 23.0 | 115.6 | 1.8 | −11 | 55.22 | 1.6 | 0.0487 | 1.2 | 55.26 | .16 | 0.048 | 1.4 | 0.12 | 2.1 | 0.018 | 1.6 | 0.740 | |
I19–24 9.1 | 0.06 | 674 | 117 | 0.18 | 10.6 | 116.8 | 1.9 | 50 | 54.67 | 1.6 | 0.0500 | 1.8 | 54.71 | 1.6 | 0.050 | 1.9 | 0.12 | 2.5 | 0.018 | 1.6 | 0.652 | |
I19–27–7 3.2 | Taezh. | 1.85 | 1678 | 547 | 0.34 | 25.7 | 114.2 | 2.0 | −9 | 55.97 | 1.7 | 0.0481 | 1.5 | 55.97 | 1.7 | 0.048 | 1.5 | 0.12 | 2.3 | 0.018 | 1.7 | 0.750 |
I19–27–7 4.1 | 0.04 | 1289 | 226 | 0.18 | 20.4 | 117.9 | 2.1 | 24 | 54.17 | 1.8 | 0.0493 | 1.7 | 54.19 | 1.8 | 0.049 | 1.7 | 0.12 | 2.5 | 0.018 | 1.8 | 0.716 | |
I19–27–7 7.1 | 0.13 | 1926 | 563 | 0.30 | 30.9 | 119.0 | 2.1 | −6 | 53.61 | 1.7 | 0.0493 | 1.3 | 53.68 | 1.8 | 0.048 | 1.6 | 0.12 | 2.4 | 0.019 | 1.8 | 0.729 | |
I19–27–7 1.1 | 0.08 | 486 | 2 | 0.01 | 7.9 | 121.0 | 2.2 | 20 | 52.72 | 1.8 | 0.0496 | 2.2 | 52.76 | 1.8 | 0.049 | 2.4 | 0.13 | 3.0 | 0.019 | 1.8 | 0.609 | |
I19–27–7 1.2 | 1.85 | 533 | 14 | 0.03 | 8.8 | 122.9 | 2.2 | 5 | 51.95 | 1.8 | 0.0486 | 2.2 | 51.95 | 1.8 | 0.049 | 2.2 | 0.13 | 2.8 | 0.019 | 1.8 | 0.633 | |
I19–27–7 6.1 | 0.10 | 491 | 27 | 0.06 | 8.3 | 126.1 | 2.3 | 8 | 50.56 | 1.8 | 0.0496 | 2.4 | 50.61 | 1.8 | 0.049 | 2.6 | 0.13 | 3.2 | 0.020 | 1.8 | 0.570 | |
I19–27–7 2.1 | 0.49 | 1462 | 406 | 0.29 | 25.1 | 127.2 | 2.2 | 8 | 49.93 | 1.8 | 0.0527 | 1.4 | 50.18 | 1.8 | 0.049 | 2.4 | 0.13 | 3.0 | 0.020 | 1.8 | 0.590 |
Sample | Massif | Rock | m, gr | Rb, ppm | Sr, ppm | 87Rb/86Sr | 2σ, % | 87Sr/86Sr | 2σ, % | 2σ, abs. |
---|---|---|---|---|---|---|---|---|---|---|
I19–22/5 | Medvedev | Syenite-porphyry | 0.10023 | 100 | 974 | 0.29718 | 0.2 | 0.708031 | 0.002 | 0.000011 |
I19–21/5 | Pyroxene-amphibole syenite | 0.10384 | 113 | 933 | 0.34970 | 0.2 | 0.707812 | 0.001 | 0.000007 | |
I19–15 | Quartz monzonite | 0.10113 | 79.4 | 1338 | 0.17170 | 0.2 | 0.706221 | 0.001 | 0.000006 | |
I19–24/2 | Taezhniy | Quartz monzonite | 0.10628 | 65.2 | 1129 | 0.16710 | 0.2 | 0.706457 | 0.001 | 0.000008 |
I19–27/7 | Syenite | 0.10624 | 103 | 851 | 0.34893 | 0.2 | 0.707184 | 0.001 | 0.000005 |
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Ivanov, A.; Loskutov, E.; Ivanov, M.; Zhuravlev, A. Petrography, Geochemical Features and Absolute Dating of the Mesozoic Igneous Rocks of Medvedev and Taezhniy Massifs (Southeast Russia, Aldan Shield). Minerals 2022, 12, 1516. https://doi.org/10.3390/min12121516
Ivanov A, Loskutov E, Ivanov M, Zhuravlev A. Petrography, Geochemical Features and Absolute Dating of the Mesozoic Igneous Rocks of Medvedev and Taezhniy Massifs (Southeast Russia, Aldan Shield). Minerals. 2022; 12(12):1516. https://doi.org/10.3390/min12121516
Chicago/Turabian StyleIvanov, Alexey, Evgeny Loskutov, Michil Ivanov, and Anatolii Zhuravlev. 2022. "Petrography, Geochemical Features and Absolute Dating of the Mesozoic Igneous Rocks of Medvedev and Taezhniy Massifs (Southeast Russia, Aldan Shield)" Minerals 12, no. 12: 1516. https://doi.org/10.3390/min12121516