The Galapagos Spreading Centre: Lithospheric Cooling and Hydrothermal Circulation [PDF]
Geophysical Journal International, 1974 Summary The spatial pattern of cooling near a spreading ridge crest was investigated with a suite of 71 precisely-navigated heat-flow stations on the Galapagos spreading centre, East Pacific, near 86"W longitude. Stations are on crust less than 1.0 My old on which bathymetry and sediment distribution are well known.
Roger N. Anderson +3 more
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Impact of geothermal heating on the global ocean circulation [PDF]
, 2001 The response of a global circulation model to a uniform geothermal heat flux of 50 mW m-2 through the sea floor is examined. If the geothermal heat input were transported upward purely by diffusion, the deep ocean would warm by 1.2°C. However, geothermal
Adcroft, Alistair +2 more
core +2 more sources
Deformation and fluid flow in the Huab Basin and Etendeka Plateau, NW Namibia [PDF]
, 2016 The Lower Cretaceous Twyfelfontein sandstone formation in the Huab Basin in NW Namibia shows the effects of volcanic activity on a potential reservoir rock.
Chung, Peter +6 more
core +1 more source
Manganese in the West Atlantic Ocean in context of the first global ocean circulation model of manganese [PDF]
Biogeosciences, 14, 1123-1152, 2017, 2016 Dissolved manganese (Mn) is a biologically essential element, and its oxidised form is involved in the removal of trace elements from ocean waters. Recently, a large number of highly accurate Mn measurements have been obtained in the Atlantic, Indian and Arctic Oceans as part of the GEOTRACES programme.
arxiv +1 more source
Evidence for an impact-induced biosphere from the δ34S signature of sulphides in the Rochechouart impact structure, France [PDF]
, 2017 The highly eroded 23 km diameter Rochechouart impact structure, France, has extensive evidence for post-impact hydrothermal alteration and sulphide mineralization.
Boyce, A.J. +4 more
core +1 more source
Methane bursts as a trigger for intermittent lake-forming climates on post-Noachian Mars [PDF]
Nature Geoscience, 10, 737-740 (2017), 2016 Lakes existed on Mars later than 3.6 billion years ago, according to sedimentary evidence for deltaic deposition. The observed fluvio-lacustrine deposits suggest that individual lake-forming climates persisted for at least several thousand years (assuming dilute flow).
arxiv +1 more source
Topographic and Faults Control of Hydrothermal Circulation Along Dormant Faults in an Orogen [PDF]
Geochemistry, Geophysics, Geosystems, 2018 AbstractHydrothermal systems involving dormant faults within orogenic belts are rarely targeted for geothermal exploration, partly because of the complexity of the 3‐D topography, the unknown permeability of the fault zones and the basement lithology, and the lack of deep‐level data.
Taillefer, Audrey +8 more
openaire +5 more sources
Structural and Mineralogical Characterization of a Fossil Hydrothermal System Located at the Outermost Front of the Southern Apennines Fold-and-Thrust Belt [PDF]
, 2019 Aiming at investigating the hydrothermal circulation along the eastern flank of the Vulture volcano, along the outermost edge of the southern Apennine fold-and-thrust belt (ftb), we studied the fossil hydrothermal alteration that mineralized a ...
Angela Vita Petrullo +6 more
core +3 more sources
In situ ore formation experiment: Amino acids and amino sugars trapped in artificial chimneys on deep-sea hydrothermal systems at Suiyo Seamount, Izu-Bonin Arc, Pacific Ocean [PDF]
Published on Bulletin of the Chemical Society of Japan, 78,
638-651 (2005), 2013 The present study reports on the bio-organic composition of a deep-sea venting hydrothermal system originating from arc volcanism; the origin of the particulates in hydrothermal fluids from the Suiyo Seamount in the southern Izu-Bonin (Ogasawara) Arc is discussed with regard to amino compounds.
arxiv +1 more source
Geological constraints for a conceptual evolutionary model of the slope deformations affecting Mt. Nuovo at Ischia (Italy) [PDF]
, 2015 ischia island was the scenario of several Holocene slope in- stability events occurred at different scales, from shallow mass movements, triggered by meteo-climatic forcing, up to massive rock slope failures such as large debris avalanches these last ...
DELLA SETA, Marta +6 more
core +1 more source