Fe-Mn nodule morphotypes from the NE Clarion-Clipperton Fracture Zone, Pacific Ocean: Comparison of mineralogy, geochemistry and genesis

2019 ◽  
Vol 110 ◽  
pp. 102933 ◽  
Author(s):  
L.Ye. Reykhard ◽  
N.A. Shulga
Keyword(s):  
Pacific Ocean ◽  
Fracture Zone ◽  
Clipperton Fracture Zone ◽  
Clarion Clipperton Fracture Zone

Vasopora ceramica n. gen., n. sp.—a new abyssal cyclostome bryozoan from polymetallic nodules in the Russian exploration area, Clarion–Clipperton Fracture Zone, eastern Pacific Ocean

Zootaxa ◽  
2021 ◽  
Vol 5047 (4) ◽  
pp. 444-452
Author(s):  
ANDREI V. GRISCHENKO ◽  
DENNIS P. GORDON ◽  
VIACHESLAV P. MELNIK
Keyword(s):  
Pacific Ocean ◽  
Fracture Zone ◽  
Sharp Boundary ◽  
Eastern Pacific Ocean ◽  
Exterior Wall ◽  
Polymetallic Nodules ◽  
Clipperton Fracture Zone ◽  
Distinct Boundary ◽  
Clarion Clipperton Fracture Zone ◽  
Exploration Area

A new abyssal cyclostome bryozoan genus and species, Vasopora ceramica n. gen., n. sp., is described from the eastern Russian exploration area of the Clarion–Clipperton Fracture Zone based on newly collected material from Yuzhmorgeologiya GLD4–19 station 421 (13.23408° N, 134.22180° W, 4809 m depth). Generic characters include an erect pedunculate colony with a distinct boundary between column and flared capitulum, short autozooidal peristomes in a single whorl, numerous alveoli, a central unidirectional sac-like gonozooid covered by a surficial network of crossed ridges continuous with adjacent rims of alveoli, a laterally opening ooeciopore, and the entire capitulum surface being minutely densely granular to subspinulate. Whereas the skeletal microstructure of the capitulum surface comprises irregular imbricated crystallites, the column has a planar-spherulitic fabric of acicular crystallites in fan-like arrays, and there are no pseudopores. The sharp boundary between capitulum and column, with their different microstructure separates Vasopora n. gen. from the two existing genera of Alyonushkidae that are found in the same environment. Vasopora n. gen. has a stalk formed of calcified exterior wall, whereas it is interior-walled in Alyonushka and Calyssopora.  

Description of two new species of munnopsid isopods (Crustacea: Isopoda: Asellota) from manganese nodules area of the Clarion-Clipperton Fracture Zone, Pacific Ocean

Zootaxa ◽  
2011 ◽  
Vol 2783 (1) ◽  
pp. 1 ◽  
Author(s):  
MARINA V. MALYUTINA
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
Fracture Zone ◽  
Similar Species ◽  
Manganese Nodules ◽  
The Pacific ◽  
Clipperton Fracture Zone ◽  
Two New Species ◽  
The Pacific Ocean ◽  
Clarion Clipperton Fracture Zone

Two new species of deep sea asellotes of the family Munnopsidae, Rectisura slavai sp. nov. and Storthyngura yuzhmorgeo sp. nov. are described from the manganese nodules area in the Clarion-Clipperton Fracture Zone of the Pacific Ocean. The discovery of these new species allowed re-examination of the taxonomic position of two similar species, Storthyngura ? intermedia (Beddard, 1885) from the Northeastern Basin of the Pacific Ocean and Ilyarachna defecta Menzies & George, 1972 from the Peru-Chile Trench, eastern Pacific Ocean. The species are moved to the genera Rectisura Malyutina, 2003 and Storthyngura Vanhöffen, 1914, respectively. Additional composition and distribution of the species of the genera are presented.

New Hexactinellid Sponge Chaunoplectella megapora sp. nov. (Lyssacinosida: Leucopsacidae) from Clarion-Clipperton Fracture Zone, Eastern Pacific Ocean

Zootaxa ◽  
2018 ◽  
Vol 4375 (1) ◽  
pp. 136
Author(s):  
CHUNSHENG WANG ◽  
YUAN ZHANG ◽  
BO LU ◽  
DEXIANG WANG
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
Fracture Zone ◽  
First Record ◽  
Eastern Pacific ◽  
Eastern Pacific Ocean ◽  
Hexactinellid Sponge ◽  
Clipperton Fracture Zone ◽  
Clarion Clipperton Fracture Zone ◽  
A New Species

The new Hexactinellid sponge Chaunoplectella megapora sp. nov. reported in this study was collected from the COMRA contract area, the western part of Clarion-Clipperton Fracture Zone (CCFZ) in the eastern Pacific Ocean at a depth of 5258 m. This sponge’s extraordinary multiporous body with the presence of unique codonhexasters, sigmatocomes, toothed discohexasters and hemidiscohexasters, as well as stellate disocohexasters, characterizes it as a new species in the genus Chaunoplectella. This report presents the first record of family Leucopsacidae at this site in the eastern Pacific Ocean. 

Two new species of paratanaoid tanaidaceans of the family incertae sedis (Crustacea: Peracarida) from polymetallic nodule fields in the eastern Clarion-Clipperton Fracture Zone

Zootaxa ◽  
2020 ◽  
Vol 4758 (3) ◽  
pp. 461-485
Author(s):  
C. K. CHIM ◽  
SAMANTHA J. W. TONG
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
Fracture Zone ◽  
New Genus ◽  
Incertae Sedis ◽  
Polymetallic Nodule ◽  
Clipperton Fracture Zone ◽  
The Family ◽  
Two New Species ◽  
Clarion Clipperton Fracture Zone

This study describes a new genus and two new species of Tanaidacea that were collected from the Singaporean exploratory area (OMS) of the polymetallic nodule fields in the eastern end of the Clarion-Clipperton Fracture Zone, Pacific Ocean. The descriptions are based on material collected during the research cruise ABYSSLINE II, which was conducted in the year 2015, covering abyssal depths of 4041–4227 m. These new species are paratanaoideans belonging to the genera Unispinosus n. gen. and Portaratrum Guerrero-Kommritz, 2003 of the family incertae sedis. 

scholarly journals Are seamounts refuge areas for fauna from polymetallic nodule fields?

2019 ◽  
Author(s):  
Daphne Cuvelier ◽  
Pedro A. Ribeiro ◽  
Sofia P. Ramalho ◽  
Daniel Kersken ◽  
Pedro Martinez Arbizu ◽  
...  
Keyword(s):  
Fracture Zone ◽  
Deep Sea ◽  
Soft Sediment ◽  
Sea Floor ◽  
Polymetallic Nodule ◽  
Refuge Area ◽  
Clipperton Fracture Zone ◽  
Clarion Clipperton Fracture Zone ◽  
Refuge Areas ◽  
Hard Substrata

Abstract. Seamounts are abundant and prominent features on the deep-sea floor and intersperse with the nodule fields of the Clarion-Clipperton Fracture Zone (CCZ). There is a particular interest in characterising the fauna inhabiting seamounts in the CCZ because they are the only other ecosystem in the region to provide hard substrata besides the abundant nodules on the soft sediment abyssal plains. It has been hypothesised that seamounts could provide refuge for organisms during deep-sea mining actions or that they could play a role in the (re-)colonisation of the disturbed nodule fields. This hypothesis is tested by analysing video transects in both ecosystems, assessing megafauna composition and abundance. Nine video transects (ROV dives) from two different license areas and one Area of Particular Environmental Interest in the eastern CCZ were analysed. Four of these transects were carried out as exploratory dives on four different seamounts in order to gain first insights in megafauna composition. The five other dives were carried out in the neighbouring nodule fields in the same areas. Variation in community composition observed among and along the video transects was high, with little morphospecies overlap on intra-ecosystem transects. Despite these observations of considerable faunal variations within each ecosystem, differences between seamounts and nodule fields prevailed, showing significantly different species associations characterising them, thus questioning their use as a possible refuge area.

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