Hit or miss: Glacial incisions of snowball Earth

Mitchell Ross N.; Gernon Thomas M.; Nordsvan Adam; Cox Grant M.; Li Zheng-Xiang; Hoffman Paul F.

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Hit or miss: Glacial incisions of snowball Earth

机译：击中或小姐：雪球地球的冰川切口

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Estimated at similar to 58 Ma in duration, the Sturtian snowball Earth (ca. 717-659 Ma) is one of the longest-known glaciations in Earth history. Surprisingly few uncontroversial lines of evidence for glacial incisions associated with such a protracted event exist. We report here multiple lines of geological field evidence for deep but variable glacial erosion during the Sturtian glaciation. One incision, on the scale of several kilometres, represents the deepest incision documented for snowball Earth; another much more modest glacial valley, however, suggests an erosion rate similar to sluggish Quaternary glaciers. The heterogeneity in snowball glacial incisions reported here and elsewhere was likely influenced by actively extending horst-and-graben topography associated with the breakup of supercontinent Rodinia.

机译：估计与持续时间相似，Sturtian雪球地球（约717-659 mA）是地球历史上最长的冰川之一。令人惊讶的是，存在与这种持久事件相关的冰川切口的巨大证据少数人存在。我们在这里报告了在斯图里亚冰川期间的深层但可变冰川侵蚀的多条地质场证据。一个切口，在几公里的规模上代表了为雪球地球进行的最深切口; 然而，另一个更适中的冰河谷表明侵蚀率类似于缓慢的第四纪冰川。在这里报告的雪球冰球切口中的异质性可能受到与超大悲腺毒素分析相关的积极延长Horst-and-Graben地形的影响。

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《Terra Nova》 |2019年第4期|共9页
作者
Mitchell Ross N.; Gernon Thomas M.; Nordsvan Adam; Cox Grant M.; Li Zheng-Xiang; Hoffman Paul F.;
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作者单位

Curtin Univ Earth Dynam Inst Geosci Res TIGeR Sch Earth &

Planetary Sci Bentley WA Australia;

Univ Southampton Ocean &

Earth Sci Southampton Hants England;

Curtin Univ Earth Dynam Inst Geosci Res TIGeR Sch Earth &

Planetary Sci Bentley WA Australia;

Univ Adelaide Dept Earth Sci Adelaide SA Australia;

Curtin Univ Earth Dynam Inst Geosci Res TIGeR Sch Earth &

Planetary Sci Bentley WA Australia;

Harvard Univ Dept Earth &

Planetary Sci 20 Oxford St Cambridge MA 02138 USA;

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正文语种 eng
中图分类天文学、地球科学;
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1. Hit or miss: Glacial incisions of snowball Earth [J] . Mitchell Ross N., Gernon Thomas M., Nordsvan Adam, Terra Nova . 2019,第4期

机译：击中或小姐：雪球地球的冰川切口
2. The Great Oxidation and a Siderian snowball Earth:MIF-S based correlation of Paleoproterozoic glacial epochs [J] . Paul F. Hoffman Chemical geology . 2013,第Null期

机译：大氧化和边坡雪球地球：基于MIF-S的古元古代冰川时期的相关性
3. Constraints on the timing of Marinoan "Snowball Earth" glaciation by ~(187)Re–~(187)Os dating of a Neoproterozoic, post-glacial black shale in Western Canada [J] . Brian S. Kendall, Robert A. Creaser, Gerald M. Ross, Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System . 2004,第3a4期

机译：加拿大西部新元古代，后冰期黑色页岩的〜（187）Re ~~（187）Os年代对马里诺“雪球地球”冰期的时间限制
4. Comparison of Snowball Earth and Mars Conditions (Is Mars climatically in resonance with the Earth?) [C] . Roland Paepe, Elfi Van Overloop, Richard B. Hoover Conference on instruments, methods, and missions for astrobiology . 2002

机译：雪球地球和火星条件的比较（在地球上积极共振的火星？）
5. The Biggest Snowball Fight in Earth History: Stratigraphy, Facies Analysis, and Geochronology of the Pocatello Formation [D] . Ellison, Matthew W. 2021

机译：地球历史上最大的雪球斗争：地层，面部分析和助致的地理学形成
6. From the Cover: The Great Oxidation Event preceded a Paleoproterozoic snowball Earth [O] . Matthew R. Warke, Tommaso Di Rocco, Aubrey L. Zerkle, 2020

机译：从封面开始：重大氧化事件发生在古元古代雪球地球之前
7. Glacial flow of floating marine ice in ‘‘Snowball Earth’’ [O] . Jason C. Goodman, Raymond T. Pierrehumbert 2003

机译：“雪球地球”中漂浮的海洋冰层的冰川流动

Hit or miss: Glacial incisions of snowball Earth

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