During in situ measurements during 35 minutes temperature of hydrothermal fluids was varying within a range from to ? Calculated chemical and isotopic composition of hydrothermal fluid shows elevated concentrations of Cl, Ni, Co, CH4, and H2. Fluid inclusions are homogenized at temperatures from to ? C, whereas salinity of the fluid varies from 4. It is shown that hydrothermal activity in the area continues approximately during ka. It is assumed that the fluid and sulfide edifices contain components from the upper mantle.
A hypothesis of phase separation of a supercritical fluid that results in formation of brines is proposed. Hydrothermal activity is related to the tectonic, not volcanic, phase of the Mid-Atlantic Ridge evolution.
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M Sagalevich Book 1 edition published in in Russian and held by 1 WorldCat member library worldwide. Translated from Okeanologiya, , 37 4 , , Oceanology, 37 4 , by Yury A Bogdanov in English and held by 1 WorldCat member library worldwide In July geological and biological studies in the axial zone of the northern part of the Mohn's Ridge 72? Slopes of the neovolcanic zone, as well as a caldera on its crest were investigated with use of deep-sea manned submersibles Mir, geological and biological samples were also collected.
Use of the Rosette sounding complex provided recognition of several major hydrothermal plumes.
New study challenges prevailing theory about how deep-sea vents are colonized
Bottom sediments of the marginal depression are enriched in metals characteristic for hydrothermal metalliferous sediments. Thus, a new unknown hydrothermal field was found. Saving the oceans by Joseph MacInnis Book 1 edition published in in English and held by 1 WorldCat member library worldwide Photographic exploration of Earth's four ocean zones, discussing why oceans are necessary to life on the planet, looking at the steps scientists and environmentalists are taking to save oceans from the damaging effects of pollution, over-fishing, and increased population, and outlining what individuals can do to conserve ocean environments.
Geochemistry of hydrothermal solutions, ores, and biota from hydrothermal fields at the East Pacific Rise axis near 9? Geokhimiya Geochemistry , No 7, by Alla Yu Lein in English and held by 1 WorldCat member library worldwide Hydrothermal solutions were examined in a circulation system that started to develop after the volcanic eruption in the axial segment of the EPR between 9? Within twelve years after this eruption, diffusion outflow of hot fluid from fractures in basaltic lavas gave way to focused seeps of hot solutions through channels of hydrothermal sulfide edifices.
This fact can explain disappearance of microbial mats that were widespread within the fields before S isotopic composition of H2S does not depend on H2S concentration. This fact testifies rapid evolution of the hydrothermal system in the early years of its evolution. Carbon in CH4 from hot fluid sampled in is richer in 12C isotope than carbon in fluid from the hydrothermal field at 21? N EPR. Coastal Systems Dept.
Ocean Systems Dept. National Marine Facilities.
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Ocean Systems OCS. Expertise Deep-sea benthic ecology Deep-sea hydrothermal vent ecology Community response to stress and disturbance Taxonomy in particular copepods Deep-sea mining. Linked news Wednesday 17 October De vondst werd…. Read more.
New study challenges prevailing theory about how deep-sea vents are colonized | MBARI
Wednesday 01 February De voorbereidingen voor diepzeemijnbouw zijn in volle gang. Op de bodem van onze oceanen liggen schaarse mineralen die we goed kunnen gebruiken voor onze computer en telefoon, maar ook voor duurzame toepassingen als zonnepanelen en windmolens. Linked blogs Wednesday 03 July Hydrothermal vents are biologically and geochemically extraordinarily active environments in the deep sea that hold answers to our understanding of life under extreme conditions, early life evolution, and global element cycles. In this blog NIOZ….
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Thursday 13 June About this book This volume synthesizes the relevant data that is fundamental to our understanding of trace metal biogeochemistry and the ecology of biological communities of deep-sea vent systems. Show all. Conclusions Pages Demina, Liudmila L. Show next xx. Read this book on SpringerLink. Recommended for you. Demina Sergey V. PAGE 1.
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