部分冰封海洋中新新生代带状铁质地层的形成

IF 15.7 1区地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY

Nature Geoscience Pub Date : 2024-04-09 DOI:10.1038/s41561-024-01406-4

Kaushal Gianchandani, Itay Halevy, Hezi Gildor, Yosef Ashkenazy, Eli Tziperman

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引用次数: 0

摘要

关于新近纪雪球地球事件期间海洋冰层的子午线范围还存在争议。与斯图尔特冰川有关的带状铁质地层被认为是完全被冰覆盖的铁质海洋（硬雪球）的证据。在这里，我们利用一个具有厚海洋冰川和新近纪生物地球化学的海洋大环流模型，发现在部分冰雪覆盖的海洋（软雪球）中的环流产生的铁沉积模式与观测到的斯特尔蒂带铁层的分布类似。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Production of Neoproterozoic banded iron formations in a partially ice-covered ocean

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Production of Neoproterozoic banded iron formations in a partially ice-covered ocean

The meridional extent of marine ice during the Neoproterozoic snowball Earth events is debated. Banded iron formations associated with the Sturtian glaciation are considered evidence for a completely ice-covered, ferruginous ocean (hard snowball). Here, using an ocean general circulation model with thick sea glaciers and Neoproterozoic biogeochemistry, we find that circulation in a partially ice-covered ocean (soft snowball) yields iron deposition patterns similar to the observed distribution of Sturtian banded iron formations. Neoproterozoic banded iron formations formed in partially glaciated oceans where iron-rich and oxygenated water masses met, according to ocean modelling.

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来源期刊

Nature Geoscience 地学-地球科学综合

CiteScore

26.70

自引率

1.60%

发文量

187

审稿时长

3.3 months

期刊介绍： Nature Geoscience is a monthly interdisciplinary journal that gathers top-tier research spanning Earth Sciences and related fields. The journal covers all geoscience disciplines, including fieldwork, modeling, and theoretical studies. Topics include atmospheric science, biogeochemistry, climate science, geobiology, geochemistry, geoinformatics, remote sensing, geology, geomagnetism, paleomagnetism, geomorphology, geophysics, glaciology, hydrology, limnology, mineralogy, oceanography, paleontology, paleoclimatology, paleoceanography, petrology, planetary science, seismology, space physics, tectonics, and volcanology. Nature Geoscience upholds its commitment to publishing significant, high-quality Earth Sciences research through fair, rapid, and rigorous peer review, overseen by a team of full-time professional editors.