Depositional patterns constrained by slope topography changes on seamounts

被引：10
作者：
Du, Dewen [1 ,2 ,3 ]
Yan, Shijuan [1 ]
Yang, Gang [1 ]
Shi, Fengdeng [1 ]
Zhu, Zhiwei [1 ]
Song, Qinglei [1 ]
Yang, Fengli [1 ]
Cui, Yingchun [1 ]
Shi, Xuefa [1 ]
机构：
[1] Minist Nat Resources, Inst Oceanog 1, Key Lab Marine Geol & Metallogeny, Qingdao, Peoples R China
[2] Qingdao Natl Lab Marine Sci & Technol, Evaluat & Detect Technol Lab Marine Mineral Resou, Qingdao, Peoples R China
[3] Minist Nat Resources, Inst Oceanog 1, 6 Xianxialing Rd, Qingdao 266063, Peoples R China
来源：
SCIENTIFIC REPORTS | 2020年 / 10卷 / 01期
基金：
中国国家自然科学基金;
关键词：
RICH FERROMANGANESE CRUSTS; CENTRAL PACIFIC; MAGELLAN SEAMOUNTS; OSMIUM ISOTOPE; GROWTH; LANDSLIDES; MORPHOLOGY; NODULES; GUYOT; SUBSIDENCE;
D O I：
10.1038/s41598-020-77573-2
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
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.
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页数：12
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