Modern-style tectonic cycle in earliest Proterozoic time: Petrogenesis of dioritic-granitic rocks from the Daqingshan-Wulashan Terrane, southern Yinshan Block, North China Craton
文献类型：期刊论文
| 作者 | Ouyang, Dongjian1,2,3; Guo, Jinghui1,2,3 |
| 刊名 | LITHOS
 |
| 出版日期 | 2020 |
| 卷号 | 352页码:29 |
| 关键词 | Sanukitoids Crust-derived adakites Potassic granites Cratonization Post-collisional extension North China Craton |
| ISSN号 | 0024-4937 |
| DOI | 10.1016/j.lithos.2019.105322 |
| 英文摘要 | Archean granitoids provide us with an insight into the accretion and differentiation of early continental crust. We report the study of a dioritic to granitic rock association occurring in the Hongzhao region of the Daqingshan-Wulashan Terrane at the southern periphery of the Yinshan Block in western North China Craton. Zircon U-Pb dating reveals that the Hongzhao plutonic suite was emplaced within a short period (2.48-2.46 Ga) at the Archaean-Proterozoic transition. Four types of rocks have been identified based on their petrogeochemistry, which are K-rich diorite (KDG), Na-rich diorite (NDG), metaluminous monzogranite (MMG), and peraluminous syenogranite (PSG). First, the K-rich diorites are characterized by enrichment in both incompatible elements and transition elements with SiO2 contents of 63.4 to 57.2 wt%. Their dual geochemical character resembles the high-Ti sanukitoids, with strongly subchondritic isotopic compositions [epsilon Hf (t) = -0.8 to -5.6; epsilon Nd (t) =0.4 to -3.1] and high K2O/Na2O ratios (1.19-0.76), implying the contribution of older crustal materials in their origin. Combined with their high Y (46.9-17.9 ppm) and HREE (Yb = 4.35-1.62 ppm) abundances, the K-rich diorites were most likely derived from a mantle source previously enriched by melts from ancient terrigenous sediments at relatively lower pressures. Second, the Na-rich diorites show a crustal-derived, adakite affinity with moderate SiO2 (66.1-55.3 wt%) contents, high Na2O/K2O (8.51-3.17), Sr/Y (147-37), and (La/Yb)(N) (51-15) ratios, and low MgO (2.96-1.67 wt%), Cr (64-13 ppm), and Ni (38-6 ppm) contents. Na-rich diorites show evolved and homogeneous zircon epsilon Hf (t) (4.0-2.8) and whole-rock epsilon Nd (t) (3.6-1.2) values, indicating that they were most probably produced by partial melting of pre-existing mafic crust. Third, the metaluminous monzogranites exhibit high SiO2 contents and moderate REE fractionation with variably negative Eu anomalies. Evolved and homogeneous isotopic compositions [epsilon Hf (t) = 4.2 to 2.1 and epsilon Nd (t) = 1.7 to 1.6] suggest that the metaluminous monzogranites originated from partial melting of pre-existing continental rocks at shallow depth. Fourth, the peraluminous syenogranites show the highest SiO2 (77.3-68.6 wt%) contents and lowest CaO, Sigma REE, and Y abundances, extremely high Sr/Y (up to 241), (La/Yb)(N) (up to 128) ratios, conspicuous positive Eu anomalies (Eu/Eu* = 6.49-0.91), and variable but negative-dominated epsilon Hf (t) (1.2 to -5.9) and epsilon Nd (t) (0.8 to -0.8) values, suggesting that they might be produced by the reworking of ancient heterogeneous metasedimentary rocks at relatively high-pressure conditions. These 2.48-2.46 Ga dioritic-granitic rock associations suggest a nearly concurrent melting of both the mantle and the crust from deep to shallow levels, implying post-tectonic extension. They are significantly different from widespread and voluminous >2.5 Ga Na-rich TTG suites in the NCC that represented the growth of the continent. This shifting series of magmas documents the tectonic changes from subduction-collision to post-collisional extension at the Archean-Proterozoic transition, corresponding to the transition from continental growth to cratonization of the North China Craton. Featuring diverse and evolving magmatism, including the enrichment of mantle-derived melts with sediments in the mantle wedge, the Hongzhao plutonic suite suggests a modern-style tectonic cycle in earliest Proterozoic time. (C) 2019 Elsevier B.V. All rights reserved. |
| WOS关键词 | TRONDHJEMITE-GRANODIORITE TTG ; SETOUCHI VOLCANIC BELT ; ND ISOTOPIC-RATIOS ; IN-SITU ANALYSIS ; U-PB ; SANUKITOID SERIES ; KHONDALITE BELT ; LU-HF ; PRECISE DETERMINATION ; METAMORPHIC EVENTS |
| 资助项目 | key research project of frontier science of Chinese Academy of Sciences[QYZDY-SSW-DQC017] ; National Natural Science Foundation of China[41890832] ; National Natural Science Foundation of China[41890834] ; State Key Laboratory of Lithospheric Evolution, IGGCAS |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| WOS记录号 | WOS:000515201500008 |
| 出版者 | ELSEVIER |
| 资助机构 | key research project of frontier science of Chinese Academy of Sciences ; key research project of frontier science of Chinese Academy of Sciences ; key research project of frontier science of Chinese Academy of Sciences ; key research project of frontier science of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; key research project of frontier science of Chinese Academy of Sciences ; key research project of frontier science of Chinese Academy of Sciences ; key research project of frontier science of Chinese Academy of Sciences ; key research project of frontier science of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; key research project of frontier science of Chinese Academy of Sciences ; key research project of frontier science of Chinese Academy of Sciences ; key research project of frontier science of Chinese Academy of Sciences ; key research project of frontier science of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; key research project of frontier science of Chinese Academy of Sciences ; key research project of frontier science of Chinese Academy of Sciences ; key research project of frontier science of Chinese Academy of Sciences ; key research project of frontier science of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/95644]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Guo, Jinghui |
| 作者单位 | 1.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ouyang, Dongjian,Guo, Jinghui. Modern-style tectonic cycle in earliest Proterozoic time: Petrogenesis of dioritic-granitic rocks from the Daqingshan-Wulashan Terrane, southern Yinshan Block, North China Craton[J]. LITHOS,2020,352:29. |
| APA | Ouyang, Dongjian,&Guo, Jinghui.(2020).Modern-style tectonic cycle in earliest Proterozoic time: Petrogenesis of dioritic-granitic rocks from the Daqingshan-Wulashan Terrane, southern Yinshan Block, North China Craton.LITHOS,352,29. |
| MLA | Ouyang, Dongjian,et al."Modern-style tectonic cycle in earliest Proterozoic time: Petrogenesis of dioritic-granitic rocks from the Daqingshan-Wulashan Terrane, southern Yinshan Block, North China Craton".LITHOS 352(2020):29. |
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来源：地质与地球物理研究所
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