Results 101 to 110 of about 38,033 (196)
Journal of Metamorphic Geology, Volume 44, Issue 4, Page 265-286, May 2026.ABSTRACT The Quetico subprovince of the Superior Province is among the largest metasedimentary belts globally and provides evidence of tectonic processes at play during the final stages of Archean cratonization. Although previous studies have shown that deformation and metamorphism of the 2.7‐Ga turbiditic protolith resulted in regional subvertical ...
Adrian G. Rehm +4 more
wiley +1 more source
A proposed test area for the spaceborne geodynamic ranging system [PDF]
Precise geodetic measurements are proposed in which an orbiting laser obtains intersite distance between retroreflectors 25 to 100 km apart on the ground.
Lowman, P. D., Jr.
core +1 more source
Satellite techniques for determining the geopotential for sea-surface elevations [PDF]
, 1984 Spaceborne altimetry with measurement accuracies of a few centimeters which has the potential to determine sea surface elevations necessary to compute accurate three-dimensonal geostrophic currents from traditional hydrographic observation is discussed ...
Pisacane, V. L.
core +1 more source
Journal of Metamorphic Geology, Volume 44, Issue 4, Page 311-336, May 2026.ABSTRACT This study investigates garnet–clinopyroxene double‐layered coronae in a metagabbronorite from the high‐grade metamorphic Gföhl Unit (Bohemian Massif). The coronae formed at the interfaces between relic magmatic orthopyroxene, still preserved in the cores of the coronae, and the plagioclase‐rich rock matrix.
Rene Asenbaum +5 more
wiley +1 more source
Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.Abstract The absence of sound‐velocity data spanning the entire lower mantle pressures for (Fe, Al)‐bearing bridgmanite impedes direct comparisons with seismic wave observations, leaving the chemistry of the lower mantle unresolved. The present ultra‐high pressure sound‐velocity measurements of in situ synthesized (Fe, Al)‐bearing bridgmanite up to 130
P. Saha, M. Murakami, N. Miyajima
wiley +1 more source
Layered Seismic Anisotropy and Tectonics of the Anatolian Plate
Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.Abstract Anatolian tectonics are associated with slab retreat in the west and gravitational potential energy and continental collision in the east, leading to westward motion of Anatolia relative to Eurasia, partially accommodated on the North and East Anatolian transform faults.
Chuanming Liu +4 more
wiley +1 more source
Impact of Mantle Velocity Uncertainty on Receiver‐Function Imaging of the Transition Zone
Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.Abstract Seismological estimates of the 400‐km and 670‐km mantle discontinuities (d400 and d670) are crucial for understanding the thermochemical structure and dynamics of the mantle transition zone (MTZ). However, artifacts from using ray theory and uncertainties in mantle velocity structure can affect topographic mapping of these boundaries.
Carlos A. M. Chaves +2 more
wiley +1 more source
Report of the panel on international programs [PDF]
The panel recommends that NASA participate and take an active role in the continuous monitoring of existing regional networks, the realization of high resolution geopotential and topographic missions, the establishment of interconnection of the reference
Anderson, Allen Joel +9 more
core +1 more source
Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.Abstract The Southern Array for the Lithosphere and Uplift of Taiwan Experiment (SALUTE) provides a new window into the subduction‐collision transition zone in southern Taiwan, where the Eurasian Plate‐Luzon Arc convergence drives intense orogeny and crustal deformation. Using dense P‐ and S‐wave spectral amplitude data recorded by SALUTE and a quality
Yu‐Pin Lin +5 more
wiley +1 more source