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DOI | 10.1029/2021GL094109 |
Stratigraphic Evidence for Early Martian Explosive Volcanism in Arabia Terra | |
Patrick Whelley; Alexandra Matiella Novak; Jacob Richardson; Jacob Bleacher; Kelsey Mach; Reagan N. Smith | |
2021-07-16 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Several large paterae in Arabia Terra are suggested to be calderas that produced colossal explosive eruptions (i.e., supereruptions). If these features are indeed explosive calderas, dispersion modeling suggests extensive ash deposits should be common throughout the region. However, such deposits have not previously been linked with the suggested calderas. Here, we describe layered deposits containing minerals both consistent with and diagnostic of altered volcanic ash throughout Arabia Terra. These deposits include Al-dominant minerals such as montmorillonite, imogolite, and allophane among others. Altered ash deposits are found to thin (from 1-km to 100-m thickness) away from the suggested calderas. We estimate that the volcanic ash observed in Arabia Terra is the result of between 1,000 and 2,000 individual explosive eruptions over 500-million years. Our observations support the hypothesis that Arabia Terra hosted supereruptions in the late Noachian-early Hesperian that repeatedly blanketed the region with layers of ash. |
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/333952 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Patrick Whelley,Alexandra Matiella Novak,Jacob Richardson,et al. Stratigraphic Evidence for Early Martian Explosive Volcanism in Arabia Terra[J]. Geophysical Research Letters,2021. |
APA | Patrick Whelley,Alexandra Matiella Novak,Jacob Richardson,Jacob Bleacher,Kelsey Mach,&Reagan N. Smith.(2021).Stratigraphic Evidence for Early Martian Explosive Volcanism in Arabia Terra.Geophysical Research Letters. |
MLA | Patrick Whelley,et al."Stratigraphic Evidence for Early Martian Explosive Volcanism in Arabia Terra".Geophysical Research Letters (2021). |
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