scholarly journals Hydrothermal mineral associations on 71° n of Mid-Atlantic ridge (first results)

2019 ◽  
Vol 59 (6) ◽  
pp. 1039-1057
Author(s):  
M. D. Kravchishina ◽  
A. Yu. Lein ◽  
A. G. Boev ◽  
V. Y. Prokofiev ◽  
D. P. Starodymova ◽  
...  
Keyword(s):  
Bottom Sediments ◽  
Hydrothermal Vent ◽  
Equilibrium Diagram ◽  
Fluid Temperature ◽  
Suspended Particulate ◽  
Mineral Associations ◽  
First Results ◽  
Greenland Basin ◽  
Mid Atlantic Ridge ◽  
Hydrothermal Vent Field

We discuss the preliminary results of the plume and bottom sediments studies of the Trollveggen hydrothermal vent field based on data from the 68th cruise of the RV Akademik Mstislav Keldysh. The hydrothermal vent field is located to the east of the axial zone of the slow-spreading Mohn Ridge close to the Jan Mayen hotspot at a depth of about 550 m (7118 'N, Norwegian-Greenland Basin). The plume of the hydrothermal vent field was characterized by a weak distribution in the water column, anomalies of temperature, density and salinity, a moderate concentration of methane and a low concentration of suspended particulate matter near the bottom. The enrichment of bottom sediments with barium, strontium and some sulfide forming elements (zinc, lead, copper, molybdenum) was shown. Two mineral associations of hydrothermally modified bottom sediments were revealed: pyrite and barite-marcasite. The temperature of hydrothermal fluids was established by the method of thermal and cryometric studies of gas-liquid fluid inclusions in barite (128260C) and using the FeSZnS equilibrium diagram of sulfide minerals (130290C). Our data were close to the data of direct measurements of fluid temperature [28]. We made a comparison of the hydrothermal mineralization of the Trollveggen vent field and the previously studied fields of the Mid-Atlantic Ridge located near the Azores hotspot. As a result we confirmed the influence of ocean depth and PT-conditions on the formation of hydrothermal deposits.

Retinal Anatomy of a New Species of Bresiliid Shrimp From a Hydrothermal Vent Field on the Mid-Atlantic Ridge

1996 ◽  
Vol 190 (1) ◽  
pp. 98-110 ◽  
Author(s):  
D. J. Nuckley ◽  
R. N. Jinks ◽  
B. A. Battelle ◽  
E. D. Herzog ◽  
L. Kass ◽  
...  
Keyword(s):  
New Species ◽  
Hydrothermal Vent ◽  
Mid Atlantic Ridge ◽  
A New Species ◽  
Hydrothermal Vent Field

Temperature/pressure tolerance of the first larval stage of Mirocaris fortunata from Lucky Strike hydrothermal vent field

2000 ◽  
Vol 80 (4) ◽  
pp. 739-740 ◽  
Author(s):  
P.A. Tyler ◽  
D.R. Dixon
Keyword(s):  
Vertical Distribution ◽  
Hydrothermal Vent ◽  
Zoeal Stage ◽  
Maximum Pressure ◽  
Lucky Strike ◽  
Upper Limit ◽  
Pressure Tolerance ◽  
Mid Atlantic Ridge ◽  
Adult Habitat ◽  
Hydrothermal Vent Field

Larvae of vent shrimp from the Mid-Atlantic Ridge are known to disperse widely from the adult habitat. Experimental analysis of the temperature/pressure tolerance of the first zoeal stage of Mirocaris fortunata from the Lucky Strike vent field suggest that the upper limit of vertical distribution is determined by temperature. Conversely, the lower limit is controlled by the maximum pressure tolerance of the larvae.

A new genus and two new species of alvinocaridid shrimps (Crustacea: Decapoda: Caridea) from a hydrothermal vent field off northeastern Taiwan

Zootaxa ◽  
2010 ◽  
Vol 2372 (1) ◽  
pp. 15-32 ◽  
Author(s):  
TOMOYUKI KOMAI ◽  
TIN-YAM CHAN
Keyword(s):  
New Species ◽  
Hydrothermal Vent ◽  
New Genus ◽  
The Third ◽  
The Family ◽  
Two New Species ◽  
Mid Atlantic Ridge ◽  
Hydrothermal Vent Field ◽  
Antennular Peduncle

Two new species of alvinocaridid shrimps are described from a hydrothermal vent field off northeastern Taiwan at depths of 252–300 m. Alvinocaris chelys n. sp. is morphologically very similar to A. williamsi Shank & Martin, 2003 from the Mid-Atlantic Ridge, and A. alexander Ahyong, 2009 from the southern Kermadec Ridge. These three species can be differentiated by the shape of the postrostral ridge, telson, the second segment of the antennular peduncle and the armature of the meri and ischia of the third pereopod. The second new species, although rather similar to Alvinocaris niwa Webber, 2004 from the Kermadec-Arc, is assigned to a new genus Alvinocaridinides gen. nov., which appears to be intermediate between Shinkaicaris Komai & Segonzac, 2005 and other derived genera including Opaepele Williams & Dobbs, 1995, Chorocaris Martin & Hessler, 1990 and Rimicaris Williams & Rona, 1986. Alvinocaridinides formosa n. sp. differs from Alvinocaris niwa by completely lacking any armature on the ischia of the third to fifth pereopods and by bearing two movable spines at the posterolateral angle of the uropodal exopod. These records constitute the first discovery of the family Alvinocarididae in Taiwanese waters and represent the shallowest occurrence for alvinocaridid shrimps.

scholarly journals Moytirra: Discovery of the first known deep-sea hydrothermal vent field on the slow-spreading Mid-Atlantic Ridge north of the Azores

2013 ◽  
Vol 14 (10) ◽  
pp. 4170-4184 ◽  
Author(s):  
A. J. Wheeler ◽  
B. Murton ◽  
J. Copley ◽  
A. Lim ◽  
J. Carlsson ◽  
...  
Keyword(s):  
Deep Sea ◽  
Hydrothermal Vent ◽  
Mid Atlantic Ridge ◽  
Slow Spreading ◽  
Hydrothermal Vent Field

scholarly journals Particle flux in the Rainbow hydrothermal vent field (Mid-Atlantic Ridge): Dynamics, mineral and biological composition

2001 ◽  
Vol 59 (4) ◽  
pp. 633-656 ◽  
Author(s):  
Alexis Khripounoff ◽  
Annick Vangriesheim ◽  
Philippe Crassous ◽  
Michel Segonzac ◽  
Ana Colaço ◽  
...  
Keyword(s):  
Hydrothermal Vent ◽  
Particle Flux ◽  
Mid Atlantic Ridge ◽  
Hydrothermal Vent Field

An off-axis hydrothermal vent field near the Mid-Atlantic Ridge at 30° N

Nature ◽  
2001 ◽  
Vol 412 (6843) ◽  
pp. 145-149 ◽  
Author(s):  
Deborah S. Kelley ◽  
◽  
Jeffrey A. Karson ◽  
Donna K. Blackman ◽  
Gretchen L. Früh-Green ◽  
...  
Keyword(s):  
Hydrothermal Vent ◽  
Mid Atlantic Ridge ◽  
Hydrothermal Vent Field
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