Geochemistry of Deep-Sea Sediments from the Pacific Manganese Nodule Province: DOMES Sites A, B, and C

1979 ◽  
pp. 397-436 ◽  
Author(s):  
James L. Bischoff ◽  
G. Ross Heath ◽  
Margaret Leinen
Keyword(s):  
Deep Sea ◽  
Manganese Nodule ◽  
The Pacific ◽  
Deep Sea Sediments

scholarly journals Fish Teeth Sr Isotope Stratigraphy and Nd Isotope Variations: New Insights on REY Enrichments in Deep-Sea Sediments in the Pacific

2021 ◽  
Vol 9 (12) ◽  
pp. 1379
Author(s):  
Fenlian Wang ◽  
Gaowen He ◽  
Xiguang Deng ◽  
Yong Yang ◽  
Jiangbo Ren
Keyword(s):  
Deep Sea ◽  
Surface Sediments ◽  
Drake Passage ◽  
Marshall Islands ◽  
Early Oligocene ◽  
The Pacific ◽  
Deep Sea Sediments ◽  
Isotope Stratigraphy ◽  
Topographic Barriers ◽  
Fish Teeth

Rare earth elements and yttrium (REY) are widely recognized as strategic materials for advanced technological applications. Deep-sea sediments from the eastern South Pacific and central North Pacific were first reported as potential resources containing significant amounts of REY that are comparable to, or greater than, those of land-based deposits. Despite nearly a decade of research, quantitative abundances and spatial distributions of these deposits remain insufficient. Age controls are generally absent due to the lack of biostratigraphic constraints. Thus, the factors controlling the formation of REY-rich sediments are still controversial. In this study, the REY contents of surface sediments (<2 m depth) in 14 piston cores from the Middle and Western Pacific were investigated. The results show that deep-sea sediments with high REY contents (>1000 μg/g) were mainly concentrated around seamounts (e.g., the Marshall Islands). The REY contents of surface sediments generally decreased with distance from the seamounts. Biostratigraphic and fish teeth debris (apatite) Sr isotopic stratigraphy of one piston cores (P10) from the Middle Pacific indicate that deep-sea sediments with high REY contents were aged from early Oligocene to early Miocene. Since the opening of the Drake Passage during the early Oligocene, the northward-flowing Antarctic Bottom Water (AABW) would have led to an upwelling of nutrients around seamounts with topographic barriers, and at the same time, AABW would delay the rate of sediment burial to try for enough time for REY entering and enriching in the apatite (fish teeth debris). Understanding the spatial distribution of fertile regions for REY-rich sediments provides guidance for searching for other REY resources in the Pacific and in other oceans.

The detection of magnetotactic bacteria in deep sea sediments from the east Pacific Manganese Nodule Province

2016 ◽  
Vol 8 (2) ◽  
pp. 239-249 ◽  
Author(s):  
Yi Dong ◽  
Jinhua Li ◽  
Wuchang Zhang ◽  
Wenyan Zhang ◽  
Yuan Zhao ◽  
...  
Keyword(s):  
Deep Sea ◽  
Manganese Nodule ◽  
Magnetotactic Bacteria ◽  
East Pacific ◽  
Deep Sea Sediments

Spatial distribution and abundance of ammonia-oxidizing microorganisms in deep-sea sediments of the Pacific Ocean

2015 ◽  
Vol 108 (2) ◽  
pp. 329-342 ◽  
Author(s):  
Zhu-Hua Luo ◽  
Wei Xu ◽  
Meng Li ◽  
Ji-Dong Gu ◽  
Tian-Hua Zhong
Keyword(s):  
Spatial Distribution ◽  
Pacific Ocean ◽  
Deep Sea ◽  
The Pacific ◽  
Deep Sea Sediments ◽  
The Pacific Ocean

Ionium-Thorium Chronology in Deep-Sea Sediments of the Pacific

Science ◽  
1958 ◽  
Vol 128 (3330) ◽  
pp. 1003-1003 ◽  
Author(s):  
E. D. GOLDBERG ◽  
M. KOIDE
Keyword(s):  
Deep Sea ◽  
The Pacific ◽  
Deep Sea Sediments
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