Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL094624 |
Tectonic activity near the Rio Grande Rise increases fluid flux in old oceanic crust | |
Dominik A. Kardell; Zeyu Zhao; Evan J. Ramos; Justin Estep; Gail L. Christeson; Robert S. Reece | |
2021-08-25 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Oceanic plateau crust is thicker and hotter than the surrounding “normal” oceanic crust, causing differential subsidence and subsequent strain between the two domains. Here we show that recently active sedimentary faults that have been imaged adjacent to the Rio Grande Rise, an oceanic plateau in the western South Atlantic, have extensions that can penetrate at least ∼1.5 km into the upper oceanic crust. Our high-resolution seismic velocity model indicates that these fault zones significantly reduce seismic velocities and increase inferred porosity and permeability. We also present physical property-constrained fluid flow models that predict substantially increased fluxes along these pathways compared to crust not affected by faulting. As these phenomena are effectively enabled by the proximity of an oceanic plateau, we suggest that similar geologic settings globally may also exhibit elevated levels of tectonic and hydrothermal activity, with implications for the hydration of mature oceanic crust and the oceanic crustal biosphere. |
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/336663 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Dominik A. Kardell,Zeyu Zhao,Evan J. Ramos,et al. Tectonic activity near the Rio Grande Rise increases fluid flux in old oceanic crust[J]. Geophysical Research Letters,2021. |
APA | Dominik A. Kardell,Zeyu Zhao,Evan J. Ramos,Justin Estep,Gail L. Christeson,&Robert S. Reece.(2021).Tectonic activity near the Rio Grande Rise increases fluid flux in old oceanic crust.Geophysical Research Letters. |
MLA | Dominik A. Kardell,et al."Tectonic activity near the Rio Grande Rise increases fluid flux in old oceanic crust".Geophysical Research Letters (2021). |
条目包含的文件 | 条目无相关文件。 |
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