Results 41 to 50 of about 985 (137)
Abstract The continental‐side paleo‐rift structure in the east‐central Korean Peninsula is investigated using joint inversion of receiver functions and surface‐wave dispersions based on dense seismic networks. The joint inversion analysis provides precise constraints on crustal thickness and VP/VS ${V}_{P}/{V}_{S}$ ratios, and high‐resolution 3‐D shear‐
Jeongin Lee +6 more
wiley +1 more source
Ancient Mars Climate With a Polar Ocean and Ice Sheet Dynamics
Abstract In this article, we study the conditions required to maintain a stable ocean on Mars 3 Ga using a new suite of simulations. These simulations couple a 3D Global Climate Model with ocean dynamics and ice sheet flow. The model includes the main processes of the atmosphere/hydrosphere/cryosphere to investigate Mars' ancient climate.
Frédéric Schmidt +4 more
wiley +1 more source
Abstract Inception of obduction is a rare phenomenon in the Wilson cycle and requires specific prerequisites to transfer relatively high‐density oceanic lithosphere over the less‐dense continental lithosphere. The world's famous Semail ophiolite belt developed during the Late Cretaceous, when Neo‐Tethyan oceanic lithosphere obducted onto the rifted ...
M. Ismaiel, M. Y. Ali, A. Decarlis
wiley +1 more source
Stratigraphic method of eustatic quantifications: a sea level curve based on Jurassic-Cretaceous strata of the Russian Platform [PDF]
Two types of sea level are presently defined: relative and eustatic. Relative sea level (RSL) is the sea surface elevation relative to some local land surface.
Jones, Michelle
core
Adjoint models of mantle convection with seismic, plate motion, and stratigraphic constraints: North America since the Late Cretaceous [PDF]
We apply adjoint models of mantle convection to North America since the Late Cretaceous. The present-day mantle structure is constrained by seismic tomography and the time-dependent evolution by plate motions and stratigraphic data (paleoshorelines ...
Gurnis, Michael +2 more
core +1 more source
Evidence for an Early Formation of Serenitatis Basin at 4.25 Ga Shifts Lunar Chronology
Abstract Troctolite sample 76535, collected in Serenitatis basin during Apollo 17, formed at least 50 km deep, experienced maximum shock pressures of 6 GPa, and has a 40Ar/39Ar excavation age of 4.25 Ga. Previous work attributed 76535 to the South Pole‐Aitken (SPA) basin, presumably dating the SPA‐impact and constraining lunar bombardment history. Here
Evan Bjonnes +6 more
wiley +1 more source
Abstract A glacial forebulge is a bending‐related upheaval of the lithosphere outside a glaciated area that co‐occurs to the depression of the lithosphere below an ice sheet. The forebulge of the last glaciation attracted attention over more than one century, but quantitative descriptions on the geometry of the forebulge are rare.
Christian Brandes +4 more
wiley +1 more source
Altimetry data and the elastic stress tensor of subduction zones [PDF]
The stress field in the lithosphere caused by the distribution of density anomalies associated to the geoidal undulations observed by the GEOS-3 and SEASAT Earth satellites in the Tonga region was studied.
Caputo, M.
core +1 more source
Topography and gravity are geophysical fields whose joint statistical structure derives from interface-loading processes modulated by the underlying mechanics of isostatic and flexural compensation in the shallow lithosphere.
Aharonson +146 more
core +1 more source
Abstract We calculated elastic thickness (Te), flexural deflection, and gravity anomalies of the oceanic lithosphere beneath 14 seamounts of the Louisville Seamount Chain to investigate seamount formation timing and tectonic settings. Using dense core modeling to approximate seamount mass, we compared Te estimates with plate age at loading time.
Gyuha Hwang +2 more
wiley +1 more source

