Evolution of the Central Asian Orogenic Belt along the Siberian margin from Neoproterozoic-Early Paleozoic accretion to Devonian trench retreat and a comparison with Phanerozoic eastern Australia
Evolution of the Central Asian Orogenic Belt along the Siberian margin from Neoproterozoic-Early Paleozoic accretion to Devonian trench retreat and a comparison with Phanerozoic eastern Australia
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西伯利亚边缘中亚造山带从新元古代-早古生代增生到泥盆纪海沟退缩的演化及其与澳大利亚东部显生宙的比较
DOI：
10.1016/j.earscirev.2019.102951
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发表时间：
2019-11
影响因子：
12.1
通讯作者：
Cai K
中科院分区：
文献类型：
--
作者：
Li P;Sun M;Shu C;Yuan C;Jiang Y;Zhang L;Cai K
中亚造山带是地球上最大的增生造山带，在过去的25年里受到了广泛的关注。已经提出了各种模型来解释CAOB的演变，包括一个单一的弧系统的横向复制沿着大剪切带，加积/合并，造山弯曲，脊俯冲，海沟迁移等过程。为了更好地了解增生过程沿着西南西伯利亚边缘，我们合成了新的和出版的碎屑锆石和Hf同位素数据从不同的构造单元沿着西南西伯利亚边缘。研究结果表明，在新元古代，微大陆和岛弧的增生作用可能主导了西伯利亚西南缘。随后，在早古生代，一个非常大的增生楔系统的发展。泥盆纪早期锆石εHf（t）的突然增加可以用海沟退缩的主要阶段来解释。我们的研究结果与另一个主要的中生代增生造山带，在澳大利亚东部的塔斯马尼亚，显示了类似的行为幕式海沟退缩。我们进一步认为，晚中生代至新生代冈瓦纳东部边缘的破碎，以及在西南太平洋边缘海盆内多岛弧的形成，是晚古生代东准噶尔岛弧系统在CAOB的发展的一个可能的模拟。
The Central Asian Orogenic Belt (CAOB), the largest accretionary orogen on Earth, has received considerable attention in the last 25 years. Various models have been proposed to explain the evolution of the CAOB, incorporating processes such as the lateral duplication of one single arc system along large shear zones, terrane accretion/amalgamation, oroclinal bending, ridge subduction, and trench migration. To better understand accretionary processes along the southwestern Siberian margin, we synthesized new and published detrital zircon and Hf isotope data from various tectonic units along the southwestern Siberian margin. Our results show that the accretion of microcontinents and island arcs might have dominated the southwestern Siberian margin in the Neoproterozoic. This was followed, during the Early Paleozoic, by the development of a very large accretionary wedge system. An abrupt increase of zircon εHf(t) during the earliest Devonian is explained by a major phase of trench retreat. A comparison of our results with another major Phanerozoic accretionary orogen, the Tasmanides in eastern Australia, shows a similar behavior of episodic trench retreat. We further suggest that the Late Mesozoic to Cenozoic fragmentation of the eastern Gondwanan margin, and the formation of multiple island arcs within marginal sea basins in the southwestern Pacific Ocean, is a possible analogue for the Late Paleozoic development of the East Junggar island arc system in the CAOB.
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影响因子：
3
作者：
Gaoxue Yang;Yongjun Li;Hongen Wu;X. Zhong;Baokai Yang;Cunxing Yan;Jing Yan;Guohui Si
通讯作者：
Gaoxue Yang;Yongjun Li;Hongen Wu;X. Zhong;Baokai Yang;Cunxing Yan;Jing Yan;Guohui Si
中国阿尔泰山早古生代沉积记录：对其构造演化的启示
影响因子：
2.8
作者：
Yuan C.;Long X.P.;Xiao W.J.;Cai K.D.;Sun M.
通讯作者：
Sun M.
DOI：
10.1146/annurev-earth-060614-105254
发表时间：
2015-06
影响因子：
14.9
作者：
W. Xiao;B. Windley;S. Sun;Jiliang Li;Baochun Huang;Chunming Han;C. Yuan;Minjia Sun;Hanlin Chen-Hanli
通讯作者：
W. Xiao;B. Windley;S. Sun;Jiliang Li;Baochun Huang;Chunming Han;C. Yuan;Minjia Sun;Hanlin Chen-Hanli
影响因子：
2.9
作者：
Yingde Jiang;M. Sun;Guochun Zhao;C. Yuan;W. Xiao;X. Xia;X. Long;Fu-Yuan Wu
通讯作者：
Yingde Jiang;M. Sun;Guochun Zhao;C. Yuan;W. Xiao;X. Xia;X. Long;Fu-Yuan Wu
影响因子：
2.3
作者：
C. Adams;H. Campbell;N. Mortimer;W. Griffin
通讯作者：
C. Adams;H. Campbell;N. Mortimer;W. Griffin