Table 1 Compilation of sample locations, ages and zircon Hf isotopic compositions of the Mesoproterozoic magmatic rocks from microcontinents in the southern CAOB. The star (*) indicates SHRIMP zircon U–Pb ages; the others are LA-ICP-MS zircon U–Pb ages.
Tectonic unit | locality | Lithology | Age (Ma) | εHf(t) | TDMC (Ga) | Data source |
|---|---|---|---|---|---|---|
Chinese Central Tianshan | Alatage | amphibolite | 1384 ± 35 | 8.4–15.3 | 1.57–1.22 | This study |
Alatage | gneissic granodiorite | 1437 ± 4 | 2.2–6.5 | 1.93–1.71 | ref.7 | |
Alatage | gneissic granodiorite | 1438 ± 5 | 1.5–6.2 | 1.97–1.73 | ref.7 | |
Alatage | gneissic monzogranite | 1436 ± 4 | 4.2–8.2 | 1.83–1.62 | ref.7 | |
Alatage | gneissic monzogranite | 1436 ± 5 | 0.4–5.3 | 2.02–1.77 | ref.7 | |
Alatage | gneissic tonalites | 1436 ± 5 | 3.1–7.7 | 1.88–1.65 | ref.7 | |
Alatage | gneissic tonalites | 1436 ± 5 | −1.0–6.8 | 2.09–1.70 | ref.7 | |
Alatage | gneissic tonalites | 1436 ± 5 | 2.0–7.6 | 1.94–1.65 | ref.7 | |
Weiya | granitic gneiss | 1433 ± 27 | 0.3–7.0 | 2.02–1.68 | ref.7 | |
Xingxingxia | granitic gneiss | 1409 ± 33 | −0.2–8.6 | 2.03–1.58 | ref.7 | |
Beishan | Jiujing | granitic gneiss | 1408 ± 4 | 2.7–12.4 | 2.00–1.38 | ref.10 |
Xilinhot block | Sonid Zuoqi | granitic gneiss | 1390 ± 17 | 0.4–12.0 | 1.98–1.39 | ref.11 |
Sonid Zuoqi | granitic gneiss | 1397 ± 11 | ref.12 | |||
Sonid Zuoqi | granitic gneiss | 1371 ± 9 | ref.12 | |||
Sonid Zuoqi | granitic gneiss | 1369 ± 11 | ref.12 | |||
Sonid Zuoqi | granitic gneiss | 1360 ± 12 | ref.12 | |||
Alxa block | Zongnaishan | granitic gneiss | 1433 ± 17 | 0.1–11.9 | 2.19–1.44 | ref.13 |
Kyrgyz North Tianshan | Makbal | eclogite | 1446 ± 25* | ref.14 | ||
Makbal | eclogite | 1447 ± 29* | ref.14 | |||
Aktyuz | rhyolite | 1373 ± 5* | ref.16 | |||
Aktyuz | rhyolite | 1365 ± 6* | ref.16 |
