The 1.33–1.30 Ga Yanliao large igneous province in the North China Craton: Implications for reconstruction of the Nuna (Columbia) supercontinent, and specifically with the North Australian Craton
The 1.33–1.30 Ga Yanliao large igneous province in the North China Craton: Implications for reconstruction of the Nuna (Columbia) supercontinent, and specifically with the North Australian Craton
复制标题
华北克拉通1.33-1.30嘎盐寮大型火成岩省：对努纳（哥伦比亚）超大陆重建的影响，特别是对北澳大利亚克拉通的影响
DOI：
10.1016/j.epsl.2017.02.034
复制
发表时间：
2017-05
影响因子：
5.3
通讯作者：
Yang Zhen-Yu
中科院分区：
文献类型：
--
作者：
Zhang Shuan-Hong;Zhao Yue;Li Xian-Hua;Ernst R.E.;Yang Zhen-Yu
华北克拉通北部的燕辽裂谷带是中国晚古元古代—中元古代地层标准剖面的位置，与大量辉绿岩的侵位有关。详细的野外调查表明，这些岩床分布在一个长约600 km、宽约200 km的区域内，面积为1.2× 10.5 km，各区域岩床的累计厚度在50 ~ 1800 m之间。高分辨率次级离子质谱（SIMS） bad - deleyite测年表明，这些岩石的就位时间大约在1330 ~ 1305 Ma之间，峰值年龄为1323 Ma。长龙山组与下马岭组不整合，部分地区下马岭组后无沉积，表明这些辉绿岩层侵位伴随着始于1.35 ~ 1.34 Ga的前岩浆隆升。所有辉绿岩层均表现出相似的拉斑岩地球化学特征，具有板内特征。该岩浆省在1.33 ~ 1.30 Ga的侵位时间相对较短，面积大，体积大，具有板内特征，是一个大火成岩省（LIP）。这一延辽LIP及其伴随的前岩浆隆升与NCC从努纳（哥伦比亚）超大陆分裂时的地幔柱和/或大陆裂陷有关。古地磁、火山灰床和LIP数据以及其他地质约束表明，北太平洋板块与西伯利亚、劳伦西亚、波罗的海、北澳大利亚和印度的地壳块体有着密切的联系。特别是，北澳大利亚克拉通（NAC） 1.33-1.30 Ga的燕辽裂谷与1.33-1.30 Ga的Derim - galiwinku裂谷的最直接年龄匹配，以及NCC燕辽裂谷晚古元古代-中元古代地层单元与NAC McArthur盆地东南部地层单元的相似性表明，燕辽和Derim - galiwinku事件是同一LIP的破碎部分。从古地磁角度来看，北中古陆和南中古陆在中元古代早期是相连的（或至少是邻近的）。
The Yanliao rift zone in the northern North China Craton (NCC) is the location of the standard section for late Paleoproterozoic–Mesoproterozoic stratigraphy in China and is associated with the emplacement of large volumes of diabase sills. Detailed field investigations show that the sills are distributed over a region that is> 600 km long and> 200 km wide, with areal extent> 1.2× 10 5 km 2 and cumulative thickness of the sills in any one area ranging from 50 m to> 1800 m. High-resolution secondary ion mass spectrometry (SIMS) baddeleyite dating shows that emplacement of these sills occurred between about 1330 and 1305 Ma with a peak age of 1323 Ma. Emplacement of these diabase sills was accompanied by pre-magmatic uplift that started at about 1.35–1.34 Ga as indicated by the disconformity between the Changlongshan and Xiamaling formations and absence of sedimentation after the Xiamaling Formation in some areas. All the diabase sills exhibit similar geochemical features of tholeiitic compositions with intraplate characteristics. Given a relatively short duration of emplacement at 1.33–1.30 Ga, along with the large areal extent and volume, as well as intraplate character, this magmatic province constitutes a large igneous province (LIP). This Yanliao LIP and the accompanying pre-magmatic uplift were related either to a mantle plume and/or continental rifting during breakup of the NCC from the Nuna (Columbia) supercontinent. Paleomagnetic, ash bed and LIP data and other geological constraints suggest that the NCC had a close connection with Siberia, Laurentia, Baltica, North Australia and India crustal blocks. In particular, the most direct age match between the 1.33–1.30 Ga Yanliao LIP and the 1.33–1.30 Ga Derim Derim–Galiwinku LIP of the North Australian Craton (NAC), as well as the similarities between the late Paleoproterozoic–Mesoproterozoic stratigraphic units of the Yanliao rift in the NCC with the southeastern McArthur Basin in the NAC, indicate that the Yanliao and Derim Derim–Galiwinku events are fragmented parts of the same LIP, supporting the paleomagnetically plausible idea that the NCC and NAC were connected (or at least near neighbors) during the early Mesoproterozoic period.
登录
查看更多内容
影响因子：
2.3
作者：
A. Goldberg
通讯作者：
A. Goldberg
影响因子：
3.5
作者：
U. Söderlund;M. Ibáñez-Mejia;Abdelhakim El Bahat;R. Ernst;M. Ikenne;A. Soulaimani;N. Youbi;B. Cousens;M. E. Janati;A. Hafid
通讯作者：
U. Söderlund;M. Ibáñez-Mejia;Abdelhakim El Bahat;R. Ernst;M. Ikenne;A. Soulaimani;N. Youbi;B. Cousens;M. E. Janati;A. Hafid
DOI：
10.5382/sp.17.02
发表时间：
2013
期刊：
--
影响因子：
--
作者：
R. Ernst;S. Jowitt
通讯作者：
R. Ernst;S. Jowitt
影响因子：
5.8
作者：
R. Larson
通讯作者：
R. Larson
影响因子：
3.3
作者：
F. Pirajno;D. Hoatson
通讯作者：
F. Pirajno;D. Hoatson