Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL092970 |
When Wyoming became Superior: Oblique Convergence along the Southern Trans-Hudson Orogen | |
Paul A. Bedrosian; Carol A. Finn | |
2021-06-16 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | The Trans-Hudson orogen is one of the best-preserved Proterozoic orogens on Earth, largely unaffected by subsequent tectonism, yet its southern extent lies concealed beneath the North American Central Plains. A new 3D resistivity model over the southern orogen is developed and interpreted alongside borehole, potential field, and seismic-reflection data. We present the first synoptic crustal view of the southern Trans-Hudson orogen and a new tectonic model of the orogen. Our model reveals high-conductivity belts marking paleo-subduction zones while the orogen center consists of deeply exhumed relatively dense and mostly magnetic juvenile crust preserved between the deformed margins of the Wyoming and Superior cratons. Complex structure along the western margin suggests convergence began with oblique subduction and the northward transport of severed fragments of the Wyoming Province. High-conductivity belts are in places offset from upper-crustal geophysical boundaries, consistent with the thrusting of accreted arcs over the Archean margins during terminal closure. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/330774 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Paul A. Bedrosian,Carol A. Finn. When Wyoming became Superior: Oblique Convergence along the Southern Trans-Hudson Orogen[J]. Geophysical Research Letters,2021. |
APA | Paul A. Bedrosian,&Carol A. Finn.(2021).When Wyoming became Superior: Oblique Convergence along the Southern Trans-Hudson Orogen.Geophysical Research Letters. |
MLA | Paul A. Bedrosian,et al."When Wyoming became Superior: Oblique Convergence along the Southern Trans-Hudson Orogen".Geophysical Research Letters (2021). |
条目包含的文件 | 条目无相关文件。 |
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