Results 121 to 130 of about 55,232 (202)

Ecology of Mid-Atlantic Ridge hydrothermal vents

Geological Society, London, Special Publications, 1995
Abstract In the past year, the number of explored deep-water vent sites on the Mid-Atlantic Ridge has doubled. The fauna of Atlantic vents consists for the most part of a subset of invertebrate types found elsewhere in chemosynthetic ecosystems, with taxonomic differentiation usually at the species or genus level.
C. L. Dover
openaire   +2 more sources

A thin mantle transition zone beneath the equatorial Mid-Atlantic Ridge

Nature, 2021
M. Agius, C. Rychert, N. Harmon, S. Tharimena, J. Kendall   +4 more
semanticscholar   +3 more sources

Evidence from gravity data for focused magmatic accretion along the Mid-Atlantic Ridge

Nature, 1990
John C. H. Lin, G. Purdy, Hans Schouten, J. Sempéré, C. Zervas   +4 more
semanticscholar   +3 more sources

The rainbow vent fluids (36°14′N, MAR): the influence of ultramafic rocks and phase separation on trace metal content in Mid-Atlantic Ridge hydrothermal fluids

Chemical Geology, 2002
E. Douville, J. Charlou, E. Oelkers, P. Bienvenu, C. Colón, J. Donval, Y. Fouquet, D. Prieur, P. Appriou   +8 more
semanticscholar   +3 more sources

Black smokers, massive sulphides and vent biota at the Mid-Atlantic Ridge

Nature, 1986
P. Rona, G. Klinkhammer, T. Nelsen, J. Trefry, H. Elderfield   +4 more
semanticscholar   +3 more sources

Sands of the Mid-Atlantic Ridge

Science, 1965
Sands collected at 24 locations along the crest of the Mid-Atlantic Ridge between 57°S and 38°N consist predominantly of olivine, diopsidic augite, hypersthene, enstatite, amphibole, quartz, plagioclase, and volcanic glass, suggesting an olivine tholeiitic source.
P J, Fox, B C, Heezen
openaire   +2 more sources

Nepheline Gabbro from the Mid-Atlantic Ridge

Nature, 1970
IN the course of a long range programme aimed at the study of the petrology of the Equatorial Mid-Atlantic Ridge, a series of dredgings were made by Miami's Institute of Marine Sciences on the walls of the Romanche trench. The Romanche is a major tectonic fracture which intersects the Ridge close to the Equator, and offsets its axis, perpendicular to ...
J, Honnorez, E, Bonatti
openaire   +2 more sources

Mid-Atlantic Ridge: Age and Spreading Rates

Science, 1968
Fission-track dating of basaltic glass from the Mid-Atlantic Ridge gives results which are consistent with the proposal of ocean-floor spreading. Solidification ages from ∼10,000 years to ∼300,000 years were measured. Correlation is also possible between the magnetic anomaly patterns over the Crest Mountains at 45°N and the geochronology of the ...
R L, Fleischer, J R, Viertl, P B, Price, F, Aumento   +3 more
openaire   +2 more sources

Tertiary Sediment from the Mid-Atlantic Ridge

Science, 1966
Lower Miocene microfossils occur in basaltic glass in two dredge hauls from the crestal area of the Mid-Atlantic Ridge near 30°N. From the ridge and adjoining abyssal hills 43 pre-Pleistocene cores were identified, including one Cretaceous and four Eocene.
T, Saito, M, Ewing, L H, Burckle
openaire   +2 more sources

Nonspreading Crustal Blocks at the Mid-Atlantic Ridge

Science, 1971
Transverse ridges consisting of protrusions into crustal fractures of ultramafic bodies derived from the upper mantle exist at the intersection of the Mid-Atlantic Ridge with equatorial fracture zones. Shallow-water limestones containing detrital grains of quartz, microcline, and orthoclase 1 millimeter in diameter were found on the summit of one such ...
E, Bonatti, J, Honnorez
openaire   +2 more sources