Results 91 to 100 of about 5,696 (230)

Borehole Waters From Hole U1601C (Atlantis Massif) Provide Constraints for a Deep‐Sourced Formation Water That (Could) Feed the Lost City Hydrothermal Field

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Hole U1601C, drilled during International Ocean Discovery Program (IODP) Expedition 399, reached a depth of 1,268 m below the seafloor (mbsf) in the Atlantis Massif (30°N, 42°W). This borehole represents only one of six boreholes that extends more than 700 m into oceanic rock, penetrating predominantly ultramafic lithologies, mostly composed ...
C. Geoffrey Wheat, Susan Q. Lang, Gordon Southam, Will Osborne, Ivan P. Savov, Samuele Agostini, Jordan Poitras   +6 more
wiley   +1 more source

Constraints on thermo-chemical convection from numerical modelling and geophysical data. Geologica Ultraectina (298) [PDF]

, 2008
In modern geoscience, mounting evidence in support of large-scale lateral variations in the composition of Earth's deep mantle has fueled the debate on the structure and evolution of mantle convection.
Kwantitatieve seismologie: naar een nieuw begrip van het diepe binnenste van de aarde, Mantle dynamics & theoretical geophysics, Numerical modelling of mantle dynamics with non-linear rheology, van Summeren, J.R.G., Origin and long-term stability of compositional layering in the deep lower mantle   +4 more
core  

Edge‐modulated stagnant‐lid convection and volcanic passive margins

Geochemistry, Geophysics, Geosystems, 2007
The initial oceanic crust along volcanic passive margins is a factor of ∼3 greater than that of typical oceanic crust (20 versus 6–7 km). Convection driven by the edge of the continental lithosphere may cause mantle material to circulate through the ...
Norman H. Sleep
doaj   +1 more source

Beyond Equilibrium: Kinetic Thresholds and Rheological Feedbacks Create a Potentially Complex 410 in Slab Regions

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 7, July 2026.
Abstract The seismic expression of Earth's 410 km discontinuity varies across tectonic settings, from sharp, high‐amplitude interfaces to broad transitions—patterns that cannot be explained by equilibrium thermodynamics without invoking large‐scale thermal or compositional heterogeneities.
Buchanan Kerswell, John Wheeler, Rene Gassmöller, J. Huw Davies, Isabel Papanagnou, Sanne Cottaar   +5 more
wiley   +1 more source

The lithosphere-asthenosphere boundary in the North-West Atlantic region [PDF]

, 2005
A detailed knowledge of the thickness of the lithosphere in the north Atlantic is an important parameter for understanding plate tectonics in that region.
Schweitzer, J., Reigber, C., Woelbern, I., Schwintzer, P., Wylegalla, K., Wolf, D., Larsen, T., Priestley, K., Fleming, K., Larsen, T. B., Kind, R., Hanka, W., Dahl-Jensen, T., Kumar, P., Yuan, X., Fleming, Kevin, Gudmundsson, O.   +16 more
core   +1 more source

Mercury's Tectonics Record a Damage Zone From the Caloris Basin‐Forming Impact

Journal of Geophysical Research: Planets, Volume 131, Issue 7, July 2026.
Abstract The Caloris basin is the largest of the well‐preserved basins on Mercury and has left a dominant mark in the planet's geologic record. Previous analysis of orientations of a global compilation of Mercury's faults hypothesized that the Caloris basin‐forming impact introduced a widespread damage zone from which basin‐radial and ‐concentric ...
Christian Klimczak, Kelsey T. Crane, Paul K. Byrne, Işık S. Yazıcı   +3 more
wiley   +1 more source

Top driven asymmetric mantle convection [PDF]

, 2015
The role of decoupling in the low-velocity zone is crucial for understanding plate tectonics and mantle convection. Mantle convection models fail to integrate plate kinematics and thermodynamics of the mantle.
D. L. Anderson, DOGLIONI, Carlo
core   +1 more source

Characterizing Martian Lithospheric Density Distribution Through Bayesian Gravity Analysis

Journal of Geophysical Research: Planets, Volume 131, Issue 7, July 2026.
Abstract One of the best sources of information for probing the inner structure of Mars is gravimetry data from satellites. By combining these measurements with topography data and isostatic theory, the aim of this study is to infer information about lateral density variations in the Martian lithosphere. Previous efforts at direct gravity inversion had
Henrietta Rákóczi, B. C. Root, Christopher Messenger, Giles Hammond   +3 more
wiley   +1 more source

Modelling the controls on melt generation during continental extension and breakup [PDF]

, 2008
Rifting is the process that leads to the formation of oceans. Rifting is the break up ofcontinents, leading to the formation of new oceanic floor between the two continentalplates.
Armitage, John J, Armitage, John J.
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GENETIC SOURCES AND TECTONOPHYSICAL REGULARITIES OF DIVISIBILITY OF THE LITHOSPHERE INTO BLOCKS OF VARIOUS RANKS AT DIFFERENT STAGES OF ITS FORMATION: TECTONOPHYSICAL ANALYSIS

Геодинамика и тектонофизика, 2015
The paper presents the first tectonophysical reconstruction of initial divisibility of the protolithosphere as a result of convection in the cooling primitive mantle. Initial division of the protolithosphere into separate masses, i.e.
Semen I. Sherman
doaj   +1 more source