Carboniferous tectono-magmatic evolution of the northern Luliang arc: evidence from geochemistry and petrography of Carboniferous volcanic rocks in the northern Luliang Uplift, NW China
Carboniferous tectono-magmatic evolution of the northern Luliang arc: evidence from geochemistry and petrography of Carboniferous volcanic rocks in the northern Luliang Uplift, NW China
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吕梁弧北部石炭纪构造-岩浆演化：吕梁隆起北部石炭系火山岩地球化学和岩石学证据
DOI：
10.1007/s11631-021-00461-7
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发表时间：
2021-02
期刊：
影响因子：
1.6
通讯作者：
Zhang Guanlong
中科院分区：
文献类型：
--
作者：
Han Sijie;Sang Shuxun;Wang Wenfeng;Zhang Jinchao;Zhang Guanlong
北方准噶尔盆地在晚古生代经历了广泛的俯冲和复杂的构造-岩浆演化，导致了准噶尔盆地火山岩分布的不均匀性。通过对吕梁弧北方Y-2井和WW′露头石炭纪火山岩的岩石学和地球化学研究，描述了吕梁弧北方石炭纪构造-岩浆演化过程。根据所选地球化学资料的垂向变化，对Y-1井火山岩序列进行了上、下两段划分。在此基础上，对不同类型火山岩的成因和构造环境进行了评价，并据此推断了北方陆良弧石炭纪的构造-岩浆演化。结果表明：（1）吕梁隆起北方西部分布石炭纪高钾钙碱性安山岩-英安岩组合，东部保存下石炭统钙碱性玄武岩-英安岩-流纹岩组合。(2)威尔斯Y-1和Y-2井中酸性火山岩是由新生下地壳熔融的钙碱性玄武质岩浆形成的，地球化学变化表明在俯冲相关的弧环境中，板片熔融作用的增加。WW′剖面双峰式火山岩形成于弧内拉张环境下玄武质岩浆的岩石圈底侵作用。(3)喀拉买里洋盆东部的闭合发生在早石炭世之前，吕梁隆起北方东西部的构造-岩浆差异出现在石炭纪之前。
The Northern Junggar Basin experienced extensive subduction and a complex tectono-magmatic evolution during the Late Paleozoic, resulting in a heterogeneous distribution of volcanic rocks in the Junggar Basin. In this study, the Carboniferous tectono-magmatic evolution of the northern Luliang arc was described by exploring the petrography and geochemistry of Carboniferous volcanic rocks collected from well Y-2 and outcrop WW′ in the northern Luliang Uplift. The distribution, types, and formation ages of these volcanic rocks were characterized and the volcanic sequence in well Y-1 was divided into upper and lower parts according to vertical variations in selected geochemical data. Then the petrogenesis and tectonic settings of different volcanic rocks were evaluated and this was used to infer the tectono-magmatic evolution of the northern Luliang arc during the Carboniferous. The results indicate that: (1) Carboniferous high-K calc-alkali andesite–dacite associations are distributed in the west of the northern Luliang Uplift, and Lower Carboniferous calc-alkali basalt–dacite–rhyolite assemblages are preserved in its east. (2) The intermediate-acid volcanic rocks in wells Y-1 and Y-2 were derived from calc-alkali basaltic magma through melting of the juvenile lower crust, and geochemical variations indicate increasing addition of slab melting in a subduction-related arc environment. The bimodal volcanic rocks from outcrop WW′ were derived from lithospheric underplating of basaltic magma in an intra-arc extensional setting. (3) The closure of the eastern Keramaili Oceanic basin occurred before the Early Carboniferous, and the tectono-magmatic difference between the east and the west of the northern Luliang Uplift appeared before the Carboniferous period.
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影响因子：
3.9
作者：
FREY, FA;GREEN, DH;ROY, SD
通讯作者：
ROY, SD
影响因子：
2.6
作者：
Ting-Chuan Luo;Qun’an Liao;Ji-ping Chen;Chao-nan Hu;Fuming Wang;Shuaiqi Chen;Weiwei Wu;Jianji Ti
通讯作者：
Ting-Chuan Luo;Qun’an Liao;Ji-ping Chen;Chao-nan Hu;Fuming Wang;Shuaiqi Chen;Weiwei Wu;Jianji Ti
北疆东准噶尔早石炭世火山岩地球化学和岩石成因：对碰撞后岩浆作用和地球动力学过程的启示
影响因子：
6.1
作者：
Zhang, Yuanyuan;Guo, Zhaojie;Pe-Piper, Georgia;Piper, David J. W.
通讯作者：
Piper, David J. W.
影响因子：
1.8
作者：
T. Jia
通讯作者：
T. Jia
新疆准噶尔地体北部泥盆纪岛弧的苦味岩和相关熔岩的地球化学：对岩石成因、弧地幔来源和构造环境的影响
影响因子：
3.5
作者：
张招崇
通讯作者：
张招崇