Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1816188116 |
Two deep-mantle sources for Paleocene doming and volcanism in the North Atlantic | |
Glisovic, Petar1; Forte, Alessandro M.2 | |
2019 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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ISSN | 0027-8424 |
出版年 | 2019 |
卷号 | 116期号:27页码:13227-13232 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; USA |
英文摘要 | The North Atlantic Igneous Province (NAIP) erupted in two major pulses that coincide with the continental breakup and the opening of the North Atlantic Ocean over a period from 62 to 54 Ma. The unknown mantle structure under the North Atlantic during the Paleocene represents a major missing link in deciphering the geodynamic causes of this event. To address this outstanding challenge, we use a back-and-forth iterative method for time-reversed global convection modeling over the Cenozoic Era which incorporates models of present-day tomography-based mantle heterogeneity. We find that the Paleocene mantle under the North Atlantic is characterized by two major low-density plumes in the lower mantle: one beneath Greenland and another beneath the Azores. These strong lower-mantle upwellings generate small-scale hot upwellings and cold downwellings in the upper mantle. The upwellings are dispersed sources of magmatism and topographic uplift that were active on the rifted margins of the North Atlantic during the formation of the NAIP. While most studies of the Paleocene evolution of the North Atlantic have focused on the proto-Icelandic plume, our Cenozoic reconstructions reveal the equally important dynamics of a hot, buoyant, mantle-wide upwelling below the Azores. |
英文关键词 | mantle plumes North Atlantic Igneous Province time-reversed mantle convection |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000473427900018 |
WOS关键词 | IGNEOUS PROVINCE ; SEISMIC TOMOGRAPHY ; CONVECTION MODELS ; REGIONAL UPLIFT ; VISCOSITY ; TOPOGRAPHY ; GENERATION ; MAGMATISM ; DYNAMICS ; MARGINS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
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/205137 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Quebec Montreal, Geotop, Montreal, PQ H3C 3P8, Canada; 2.Univ Florida, Dept Geol Sci, Gainesville, FL 32603 USA |
推荐引用方式 GB/T 7714 | Glisovic, Petar,Forte, Alessandro M.. Two deep-mantle sources for Paleocene doming and volcanism in the North Atlantic[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2019,116(27):13227-13232. |
APA | Glisovic, Petar,&Forte, Alessandro M..(2019).Two deep-mantle sources for Paleocene doming and volcanism in the North Atlantic.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,116(27),13227-13232. |
MLA | Glisovic, Petar,et al."Two deep-mantle sources for Paleocene doming and volcanism in the North Atlantic".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 116.27(2019):13227-13232. |
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