Pannotia under prosecution
Pannotia under prosecution
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DOI：
10.1144/sp503-2020-182
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发表时间：
2020-09
期刊：
影响因子：
--
通讯作者：
D. Evans
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文献类型：
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作者：
D. Evans
摘要潘诺提亚是一个假想的超大陆，可能在元古宙-寒武纪过渡时期短暂存在过。各种各样的证据证明了它的存在，包括埃迪卡拉-寒武纪时期的全球造山作用，寒武纪被动边缘的发展和一些（但不是全部）构造重建。用于推断Pannotia准确性的间接措施包括生物多样性模式，古气候，海平面，岩浆活动和其他古环境代理。本文表明，无论是直接记录还是间接代理提供令人信服的支持Pannotia。如果这片短暂的连续大陆确实存在，它对更广泛的地球系统的影响与冈瓦纳大陆组装的更基本过程密不可分。这一观点强调了冈瓦纳大陆在泛大陆旋回早期阶段作为半超大陆的显著巩固。冈瓦纳大陆的面积加上它的C。300万年的寿命可能比更大，但寿命更短，盘古大陆地幔动力学的意义。
Abstract Pannotia is a hypothetical supercontinent that may have existed briefly during the Proterozoic–Cambrian transition. Various lines of evidence used to argue for its existence include global orogenesis in Ediacaran–Cambrian time, the development of Cambrian passive margins and some (but not all) tectonic reconstructions. Indirect measures used to infer Pannotia's veracity include patterns of biological diversity, palaeoclimate, sea level, magmatism and other palaeoenvironmental proxies. It is shown herein that neither the direct records nor the indirect proxies provide compelling support for Pannotia. If that ephemeral contiguous landmass existed at all, its effects on the broader Earth system are inextricably tied to the more fundamental processes of Gondwanaland assembly. This perspective emphasizes the remarkable consolidation of Gondwanaland as a semi-supercontinent within the early stages of the Pangaea cycle. Gondwanaland's size combined with its c. 300 myr longevity might have greater significance for mantle dynamics than the larger, but shorter-lived, Pangaea landmass.