Dive of AUV "r2D4" to "The Great Dodo Lava Plain" in the Rift Valley of the Central Indian Mid-Ocean Ridge System

2007 ◽  
Author(s):  
Tamaki Ura
Keyword(s):  
Rift Valley ◽  
Mid Ocean Ridge ◽  
Ocean Ridge ◽  
Ridge System

Dives of AUV "r2D4" to Rift Valley of Central Indian Mid-Ocean Ridge System

2007 ◽  
Author(s):  
Tamaki Ura ◽  
Kensaku Tamaki ◽  
Akira Asada ◽  
Kei Okamura ◽  
Kenji Nagahashi ◽  
...  
Keyword(s):  
Rift Valley ◽  
Mid Ocean Ridge ◽  
Ocean Ridge ◽  
Ridge System

scholarly journals Carbon Fluxes and Primary Magma CO2Contents Along the Global Mid‐Ocean Ridge System

2019 ◽  
Vol 20 (3) ◽  
pp. 1387-1424 ◽  
Author(s):  
Marion Le Voyer ◽  
Erik H. Hauri ◽  
Elizabeth Cottrell ◽  
Katherine A. Kelley ◽  
Vincent J. M. Salters ◽  
...  
Keyword(s):  
Carbon Fluxes ◽  
Primary Magma ◽  
Mid Ocean Ridge ◽  
Ocean Ridge ◽  
Ridge System

scholarly journals Seismicity of the Arctic mid-ocean Ridge system

Polar Science ◽  
2015 ◽  
Vol 9 (1) ◽  
pp. 146-157 ◽  
Author(s):  
Vera Schlindwein ◽  
Andrea Demuth ◽  
Edith Korger ◽  
Christine Läderach ◽  
Florian Schmid
Keyword(s):  
The Arctic ◽  
Mid Ocean Ridge ◽  
Ocean Ridge ◽  
Ridge System

Melvicalathis, a new brachiopod genus (Terebratulida: Chlidonophoridae) fromdeep sea volcanic substrates, and the biogeographic significance of the mid-oceanridge system

Zootaxa ◽  
2008 ◽  
Vol 1866 (1) ◽  
pp. 136 ◽  
Author(s):  
DAPHNE E. LEE ◽  
MURRAY R. GREGORY ◽  
CARSTEN LÜTER ◽  
OLGA N. ZEZINA ◽  
JEFFREY H. ROBINSON ◽  
...  
Keyword(s):  
Deep Sea ◽  
New Genus ◽  
Significant Component ◽  
Ocean Ridges ◽  
Southeast Indian Ridge ◽  
Mid Ocean Ridge ◽  
History Of ◽  
Cryptic Habitats ◽  
Ocean Ridge ◽  
Ridge System

Brachiopods form a small but significant component of the deep-sea benthos in all oceans. Almost half of the 40 brachiopod species so far described from depths greater than 2000 m are small, short-looped terebratulides assigned to two superfamilies, Terebratuloidea and Cancellothyridoidea. In this study we describe Melvicalathis, a new genus of cancellothyridoid brachiopod (Family Chlidonophoridae; Subfamily Eucalathinae) from ocean ridge localities in the south and southeast Pacific Ocean, and cryptic habitats within lava caves in glassy basalt dredged from the Southeast Indian Ridge, Indian Ocean. These small, punctate, strongly-ribbed, highly spiculate brachiopods occur at depths between 2009 m and 4900 m, and appear to be primary colonisers on the inhospitable volcanic rock substrate. The ecology and life-history of Melvicalathis and related deep-sea brachiopods are discussed. Brachiopods are rarely reported from the much-studied but localised hydrothermal vent faunas of the mid ocean ridge systems. They are, however, widespread members of a poorly known deep-sea benthos of attached, suspension-feeding epibionts that live along the rarely sampled basalt substrates associated with mid-ocean ridge systems. We suggest that these basalt rocks of the mid-ocean ridge system act as deep-sea “superhighways” for certain groups of deep-sea animals, including brachiopods, along which they may migrate and disperse. Although the mid-ocean ridges form the most extensive, continuous, essentially uniform habitat on Earth, their biogeographic significance may not have been fully appreciated.

Vertical structure, biomass and topographic association of deep-pelagic fishes in relation to a mid-ocean ridge system

2008 ◽  
Vol 55 (1-2) ◽  
pp. 161-184 ◽  
Author(s):  
T.T. Sutton ◽  
F.M. Porteiro ◽  
M. Heino ◽  
I. Byrkjedal ◽  
G. Langhelle ◽  
...  
Keyword(s):  
Vertical Structure ◽  
Pelagic Fishes ◽  
Mid Ocean Ridge ◽  
Ocean Ridge ◽  
Ridge System

CONTINENTAL MARGIN TECTONICS AND THE EVOLUTION OF SOUTH EAST AUSTRALIA

1971 ◽  
Vol 11 (1) ◽  
pp. 75 ◽  
Author(s):  
J. R. Griffiths
Keyword(s):  
Continental Margin ◽  
Rift Valley ◽  
Structural Evolution ◽  
Initial Crack ◽  
Alkali Basalts ◽  
Australian Plate ◽  
Differential Movement ◽  
Mid Ocean Ridge ◽  
Regional Tectonic ◽  
Ocean Ridge

Following recent advances in geotectonics, a new approach can be applied to the study of the development of continental margins.A continental margin begins to form as an older continental craton breaks up. The initial crack develops into a rift valley, which becomes filled with thick clastic and volcanic deposits. As separation continues a new mid-ocean ridge is formed, and the two plates begin to drift apart more rapidly. At this stage the structural evolution of the margins is virtually complete, and marine sediments are deposited unconformably across the fault troughs.The continental fragments in the south west Pacific can be reassembled as a part of the ancient continent of Gondwanaland. Gondwanaland began to break up in the mid-Jurassic. A rift valley developed along the line of the present southern coast of Australia, through the Otway Basin. Two subsidiary tensional splays gave rise to the Elliston and Robe-Penola Troughs. Clastic sediments stripped from the cratonic highlands, and alkali basalts, occur in the rift grabens. Faulting and deposition continued throughout the Lower Cretaceous. About mid-Cretaceous a marine transgression from the west entered the subdividing rift valley. In the Eocene a new mid-ocean ridge formed and the Australian and Antarctic plates began to separate more rapidly. After this, quiet marine sedimentation occurred on the continental shelf and slope.The Bass and Gippsland Basins began to develop in the Cretaceous as differential movement occurred between the main Australian plate and a partially detached Tasmanian sub-plate. In the Upper Cretaceous the Gippsland Basin became open towards the evolving Tasman Sea, as New Zealand detached. The Tasmanian sub-plate ceased fo exist after the Eocene, becoming firmly fixed to the Australian plate. Later readjustments have occurred giving rise to further limited movements, mainly in the Gippsland Basin.The integration of detailed geological work and a regional tectonic analysis has been successfully applied to south east Australia and it is probable that a similar approach would yield fruitful results applied elsewhere.

Focal depths and mechanisms of large earthquakes on the Arctic Mid-Ocean Ridge System

1986 ◽  
Vol 91 (B14) ◽  
pp. 13993 ◽  
Author(s):  
John P. Jemsek ◽  
Eric A. Bergman ◽  
John L. Nabelek ◽  
Sean C. Solomon
Keyword(s):  
The Arctic ◽  
Mid Ocean Ridge ◽  
Ocean Ridge ◽  
Large Earthquakes ◽  
Ridge System
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