Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL093312 |
Enigmatic Mid-Proterozoic orogens: Hot, thin, and low | |
Christopher J. Spencer; Ross N. Mitchell; Michael Brown | |
2021-07-30 | |
发表期刊 | Geophysical Research Letters
![]() |
出版年 | 2021 |
英文摘要 | Since the Archean, secular change in orogenic style is demonstrated through evolution of metamorphic conditions and geochemical proxies. Linked to orogenic style is the amount of crustal thickening and elevation, whereas orogenic vigor is related to the supercontinent cycle. An array of Proterozoic orogens spanned the assembly of supercontinents Columbia and Rodinia, but the vigor of orogenesis is debated, with proposals for both Mesoproterozoic quiescence and climax. We show mid-Proterozoic orogenesis occurred globally and was broadly continuous; furthermore, orogens exhibit elevated metamorphic thermobaric ratios with large volumes of high-temperature felsic magmatic rocks. These features reflect higher mantle heat flux leading to increased mid-crustal flow and lower elevation. In this context, proposals that geochemical proxies for crustal thickness record orogenic quiescence are inconsistent with the geological record. Alternatively, secular change in crustal thickness is attributed to orogenic style, namely the prevalence of hot, thin, and low orogens in the Mid-Proterozoic. |
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/335333 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Christopher J. Spencer,Ross N. Mitchell,Michael Brown. Enigmatic Mid-Proterozoic orogens: Hot, thin, and low[J]. Geophysical Research Letters,2021. |
APA | Christopher J. Spencer,Ross N. Mitchell,&Michael Brown.(2021).Enigmatic Mid-Proterozoic orogens: Hot, thin, and low.Geophysical Research Letters. |
MLA | Christopher J. Spencer,et al."Enigmatic Mid-Proterozoic orogens: Hot, thin, and low".Geophysical Research Letters (2021). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论