Compared geochemical signatures and the evolution of Menez Gwen (37°50′N) and Lucky Strike (37°17′N) hydrothermal fluids, south of the Azores Triple Junction on the Mid-Atlantic Ridge

2000 ◽  
Vol 171 (1-2) ◽  
pp. 49-75 ◽  
Author(s):  
J.L Charlou ◽  
J.P Donval ◽  
E Douville ◽  
P Jean-Baptiste ◽  
J Radford-Knoery ◽  
...  
Keyword(s):  
Triple Junction ◽  
Hydrothermal Fluids ◽  
Lucky Strike ◽  
Azores Triple Junction ◽  
Mid Atlantic Ridge ◽  
Menez Gwen

Pre-eruption history of enriched MORB from the Menez Gwen (37°50′N) and Lucky Strike (37°17′N) hydrothermal systems, Mid-Atlantic Ridge

Lithos ◽  
2009 ◽  
Vol 112 (1-2) ◽  
pp. 18-39 ◽  
Author(s):  
Ana Filipa A. Marques ◽  
Steven D. Scott ◽  
Michael P. Gorton ◽  
Fernando J.A.S. Barriga ◽  
Yves Fouquet
Keyword(s):  
Hydrothermal Systems ◽  
Lucky Strike ◽  
History Of ◽  
Mid Atlantic Ridge ◽  
Eruption History ◽  
Menez Gwen

The Azores triple junction evolution since 10 Ma from an aeromagnetic survey of the Mid-Atlantic Ridge

1994 ◽  
Vol 125 (1-4) ◽  
pp. 439-459 ◽  
Author(s):  
J. Freire Luis ◽  
J.M. Miranda ◽  
A. Galdeano ◽  
P. Patriat ◽  
J.C. Rossignol ◽  
...  
Keyword(s):  
Triple Junction ◽  
Aeromagnetic Survey ◽  
Azores Triple Junction ◽  
Mid Atlantic Ridge

Subseafloor phase equilibria in high-temperature hydrothermal fluids of the Lucky Strike Seamount (Mid-Atlantic Ridge, 37°17′N)

2012 ◽  
Vol 90 ◽  
pp. 303-322 ◽  
Author(s):  
Nicholas J. Pester ◽  
Eoghan P. Reeves ◽  
Mikaella E. Rough ◽  
Kang Ding ◽  
Jeffrey S. Seewald ◽  
...  
Keyword(s):  
High Temperature ◽  
Phase Equilibria ◽  
Hydrothermal Fluids ◽  
Lucky Strike ◽  
Mid Atlantic Ridge

scholarly journals Sulphur signature in the hydrothermal vent mussel Bathymodiolus azoricus from the Mid-Atlantic Ridge

2002 ◽  
Vol 82 (3) ◽  
pp. 463-468 ◽  
Author(s):  
Audrey Margareth Pruski ◽  
Nathalie Rousse ◽  
Aline Fiala-Médioni ◽  
Jacques Boulègue
Keyword(s):  
Hydrothermal Vent ◽  
Free Amino ◽  
Elemental Sulphur ◽  
Lucky Strike ◽  
Biochemical Characteristics ◽  
Total Sulphur Content ◽  
Mid Atlantic Ridge ◽  
Menez Gwen ◽  
First Time ◽  
Vesicomyid Clam

The sulphur compound composition of the hydrothermal vent mussel Bathymodiolus azoricus (Bivalvia: Mytilidae) was analysed in order to determine the specific biochemical characteristics of a thiotrophic mode of nutrition. In specimens collected from two contrasting vent fields on the Mid-Atlantic Ridge (Menez Gwen and Lucky Strike), substantial differences in the sulphur composition were observed between tissues and sampling sites. Total sulphur content was higher for samples from Lucky Strike than for those from Menez Gwen. The amount of elemental sulphur in the gill of B. azoricus was in the same range as values previously reported for the vesicomyid clam Calyptogena phaseoliformis and the lucinid clam Lucinoma annulata. Rings of orthorhombic sulphur or compounds such as polythionates or organopolysulphides excreted in the cytoplasm by the symbionts may account for the large amounts of elemental sulphur evidenced for the first time in an hydrothermal vent mussel. A large proportion of the tissue-sulphur was incorporated into free amino compounds such as taurine, hypotaurine, thiotaurine and cysteine, and in a lesser extent to the tripeptide glutathione. In mantles, sulphur seems to be contained mainly in organic compounds such as proteins, mucopolysaccharides and lipids. However, the occurrence of specific compounds such as thiotaurine and elemental sulphur in gills indicate that in this tissue a large proportion of the sulphur might be involved in specific pathways related to transport, storage and detoxification of sulphide. Moreover, our results suggest a greater reliance on thiotrophy of mussels from Lucky Strike as compared to specimens from Menez Gwen.

scholarly journals Enriched basalts at segment centers: The Lucky Strike (37°17′N) and Menez Gwen (37°50′N) segments of the Mid-Atlantic Ridge

2011 ◽  
Vol 12 (6) ◽  
pp. n/a-n/a ◽  
Author(s):  
Allison Gale ◽  
Stephane Escrig ◽  
Elizabeth J. Gier ◽  
Charles H. Langmuir ◽  
Steven L. Goldstein
Keyword(s):  
Lucky Strike ◽  
Mid Atlantic Ridge ◽  
Menez Gwen

Mercury concentrations in invertebrates from Mid-Atlantic Ridge hydrothermal vent fields

2001 ◽  
Vol 81 (6) ◽  
pp. 913-915 ◽  
Author(s):  
I. Martins ◽  
V. Costa ◽  
F. Porteiro ◽  
A. Cravo ◽  
R.S. Santos
Keyword(s):  
Hydrothermal Vent ◽  
Methyl Mercury ◽  
Hydrothermal Vents ◽  
Lucky Strike ◽  
Rimicaris Exoculata ◽  
Coastal Species ◽  
Low Concentrations ◽  
Mid Atlantic Ridge ◽  
Total Hg ◽  
Menez Gwen

Mercury determinations were carried out in mussels (Bathymodiolus azoricus) from three Mid-Atlantic Ridge hydrothermal vents (Lucky Strike, Menez Gwen and Rainbow) and shrimps (Rimicaris exoculata and Mirocaris fortunata) from Rainbow. Among the three hydrothermal vents, mussels of Menez Gwen show the highest levels of total Hg and comparing mussels and shrimps from Rainbow the former show more Hg than shrimps. Mussels from different hydrothermal vents are exposed to different kinds of environment which may result in distinct bioaccumulation processes. Detoxification processes in shrimps are related to the low concentrations found. When compared with coastal species from unpolluted sites, mussels show higher concentrations of total Hg and shrimps lower levels. The methyl-mercury concentrations found were very low, not exceeding the detection limit of the technique.

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