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Depositional patterns constrained by slope topography changes on seamounts

Slope topography is known to control the spatial distribution of deposits on intraplate seamounts; however, relatively little is known about how slope topography changes constrain those depositional patterns. In this study, we analyse data on four lithotypes found on seamount slopes, including collo...

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Detalles Bibliográficos
Autores principales: Du, Dewen, Yan, Shijuan, Yang, Gang, Shi, Fengdeng, Zhu, Zhiwei, Song, Qinglei, Yang, Fengli, Cui, Yingchun, Shi, Xuefa
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7688944/
https://www.ncbi.nlm.nih.gov/pubmed/33239725
http://dx.doi.org/10.1038/s41598-020-77573-2
Descripción
Sumario:Slope topography is known to control the spatial distribution of deposits on intraplate seamounts; however, relatively little is known about how slope topography changes constrain those depositional patterns. In this study, we analyse data on four lithotypes found on seamount slopes, including colloidal chemical deposits comprising mainly cobalt-rich crusts, and examine the relationships between the spatial distribution of these lithotypes and current slope topography. We use these relationships to discuss depositional patterns constrained by slope topography changes. Some depositional units in drill core samples are interpreted to have resulted from past topographic changes that created the current slope topography. Two or more types of deposits that accumulated at the same location implies that the slope topography changed over time and that the depositional patterns on seamount slopes are constrained by changes in slope topography.