Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL092874 |
The role of the seismically slow Central-East Atlantic Anomaly in the genesis of the Canary and Madeira volcanic provinces | |
Chiara Civiero; Susana Custó; dio; Marta Neres; David Schlaphorst; Joã; o Mata; Graç; a Silveira | |
2021-06-16 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | The Canary and Madeira provinces in the Central-East Atlantic Ocean are characterized by an irregular spatio-temporal distribution of volcanism along the hotspot tracks, and several alternative scenarios have been suggested to explain it. Here, we combine results from seismic tomography, shear-wave splitting and gravity along with plate reconstruction constraints to investigate the mantle structure and dynamics beneath those provinces. We find that the Central-East Atlantic Anomaly (CEAA), which rises from the core-mantle boundary and stalls in the topmost lower mantle, is the deep source of distinct upper-mantle upwellings beneath the region. The upwellings detach intermittently from the top of the CEAA and appear to be at different evolutionary stages. We argue that the accumulation of plume material in the topmost lower mantle can play a key role in governing the first-order spatio-temporal irregularities in the distribution of hotspot volcanism. |
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/330777 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Chiara Civiero,Susana Custó,dio,et al. The role of the seismically slow Central-East Atlantic Anomaly in the genesis of the Canary and Madeira volcanic provinces[J]. Geophysical Research Letters,2021. |
APA | Chiara Civiero.,Susana Custó.,dio.,Marta Neres.,David Schlaphorst.,...&a Silveira.(2021).The role of the seismically slow Central-East Atlantic Anomaly in the genesis of the Canary and Madeira volcanic provinces.Geophysical Research Letters. |
MLA | Chiara Civiero,et al."The role of the seismically slow Central-East Atlantic Anomaly in the genesis of the Canary and Madeira volcanic provinces".Geophysical Research Letters (2021). |
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