Academic Journal
Neoarchean intra-oceanic arc system in the Western Liaoning Province: Implications for Early Precambrian crustal evolution in the Eastern Block of the North China Craton
| العنوان: | Neoarchean intra-oceanic arc system in the Western Liaoning Province: Implications for Early Precambrian crustal evolution in the Eastern Block of the North China Craton |
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| المؤلفون: | Wang, Wei, Liu, Shuwen, Santosh, M., Wang, Genhou, Bai, Xiang, Guo, Rongrong |
| المساهمون: | Liu, SW (reprint author), Peking Univ, Key Lab Orogen Belts & Crustal Evolut, Minist Educ, Sch Earth & Space Sci, Beijing 100871, Peoples R China., Peking Univ, Key Lab Orogen Belts & Crustal Evolut, Minist Educ, Sch Earth & Space Sci, Beijing 100871, Peoples R China., China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Sch Earth Sci & Resources, Beijing 100083, Peoples R China., Kochi Univ, Fac Sci, Kochi 7808520, Japan. |
| المصدر: | SCI |
| بيانات النشر: | EARTH-SCIENCE REVIEWS |
| سنة النشر: | 2015 |
| المجموعة: | Peking University Institutional Repository (PKU IR) / 北京大学机构知识库 |
| مصطلحات موضوعية: | Crust-mantle evolution, Late Neoarchean intra-oceanic arc system, Arc-continent accretion, Western Liaoning Province, Eastern Block of the North China Craton, SHRIMP U-PB, LU-HF ISOTOPES, WHOLE-ROCK GEOCHEMISTRY, ULTRAHIGH-TEMPERATURE METAMORPHISM, TRONDHJEMITE-GRANODIORITE TTG, EPISODIC CONTINENTAL GROWTH, SUBDUCTION ZONE PROCESSES, HIGH-PRESSURE GRANULITES, ARCHEAN DEPLETED MANTLE, GA PENAKACHERLA TERRANE |
| الوصف: | Archean crust-mantle interaction processes provide keys to understanding crustal evolution in the Early Earth. The North China Craton (NCC) represents a natural laboratory to evaluate early Precambrian crustal evolution. The tectonic framework of the NCC is composed of two major crustal blocks, the Western Block (WB) and the Eastern Block (EB). The northwestern margin of the EB preserves voluminous metamorphosed supracrustal basaltic to andesitic rocks of ca. 2522-2640 Ma in the Fuxin greenstone belt within the Western Liaoning Province (WLP). These were intruded by the magmatic precursors of similar to 2495-2521 Ma granitoid gneisses, which were generally metamorphosed under ca. 2485 Ma regional metamorphism up to granulite fades, followed by ca. 2401-2450 Ma amphibolite fades retrogression. Geochemically, the metamorphosed volcanic rocks can be subdivided into five groups with affinities to MORBs, island arc tholeiites (IATs), calc-alkaline basalts (CABs), high-magnesium andesites (HMAs), and adakites. The petrogenesis and temporal-spatial distribution of these metamorphosed volcanic rocks and the intrusive granitoid gneisses in the WLP indicate that this basement terrane probably evolved as an intra-oceanic arc system, with major crustal growth at ca. 2.5-2.6 Ga. These rocks record complex crust-mantle evolution history as follows. Partial melting of the depleted to slightly enriched asthenospheric mantle at a spreading ridge occurred at similar to 2600-2640 Ma, generating both MORB-like rocks and juvenile oceanic lithospheric mantle sources. The mantle sources were gradually metasomatized by slab-derived fluids and melts during similar to 2506-2550 Ma, and the partial melting of both the metasomatized lithospheric mantle and the descending oceanic slabs generated IATs, CABs, HMAs, and adakites (as well as tonalite-trondhjemite-granodiorite (TFG) gneisses of the high-magnesium group). Meanwhile, the coeval underplating of mantle-derived materials triggered the partial melting of the arc-root materials, ... |
| نوع الوثيقة: | journal/newspaper |
| اللغة: | English |
| تدمد: | 0012-8252 1872-6828 |
| Relation: | EARTH-SCIENCE REVIEWS.2015,150,329-364.; 1400467; http://hdl.handle.net/20.500.11897/439305; WOS:000364796200017 |
| DOI: | 10.1016/j.earscirev.2015.08.002 |
| الاتاحة: | https://hdl.handle.net/20.500.11897/439305 https://doi.org/10.1016/j.earscirev.2015.08.002 |
| رقم الانضمام: | edsbas.A4F53F67 |
| قاعدة البيانات: | BASE |
| تدمد: | 00128252 18726828 |
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| DOI: | 10.1016/j.earscirev.2015.08.002 |