Results 21 to 30 of about 84,390 (290)

Advances in Deformable Plate Tectonic Models: 2. Reconstructing the Southern North Atlantic Back Through Time

Geochemistry, Geophysics, Geosystems, 2022
The offshore rifted margins of the North Atlantic have a spatially complex crustal structure comprised of variable crustal morphologies, continental blocks, and inherited structures. Recently, deformable plate tectonic models have permitted the interplay
Michael T. King, J. Kim Welford
doaj   +1 more source

Seismological structure of the 1.8 Ga Trans-Hudson Orogen of North America [PDF]

, 2016
Precambrian tectonic processes are debated: what was the nature and scale of orogenic events on the younger, hotter, and more ductile Earth? Northern Hudson Bay records the Paleoproterozoic collision between the Western Churchill and Superior plates—the ∼
Abbott, Acton, Agius, Ammon, Amy Gilligan, Baird, Bao, Bastow, Bastow, Berman, Berman, Breemen, Bédard, Caldwell, Christensen, Corrigan, Corrigan, Darbyshire, Darbyshire, Darbyshire, Eaton, Eaton, Ekström, Fiona A. Darbyshire, Flament, Garth, Gibb, Gilligan, Hartlaub, Hartlaub, Herrmann, Hoffman, Ian D. Bastow, Jones, Kennett, Kgaswane, Kind, Leech, Ligorría, Nelson, Nunn, Nábělek, Pawlak, Pawlak, Porritt, Rai, Rapine, Rey, Schneider, Schulte-Pelkum, Snyder, Snyder, St-Onge, St-Onge, St-Onge, Thompson, Thompson, Tugume, Wessel, Zegers, Zhang, Zhu, Özalaybey   +62 more
core   +1 more source

Surface waves and crustal structure on Mars

Science, 2022
We detected surface waves from two meteorite impacts on Mars. By measuring group velocity dispersion along the impact-lander path, we obtained a direct constraint on crustal structure away from the InSight lander. The crust north of the equatorial dichotomy had a shear wave velocity of approximately 3.2 kilometers per second in the 5- to 30-kilometer ...
Kim, D., Banerdt, W., Ceylan, S., Giardini, D., Lekić, V., Lognonné, Philippe, Beghein, C., Beucler, É., Carrasco, S., Charalambous, C., Clinton, J., Drilleau, M., Durán, C., Golombek, M., Joshi, R., Khan, A., Knapmeyer-Endrun, B., Li, J., Maguire, R., Pike, W., Samuel, H., Schimmel, M., Schmerr, N., Stähler, S., Stutzmann, E., Wieczorek, M., Xu, Z., Batov, A., Bozdag, E., Dahmen, N., Davis, P., Gudkova, T., Horleston, A., Huang, Q., Kawamura, T., King, S., Mclennan, S., Nimmo, F., Plasman, M., Plesa, A., Stepanova, I., Weidner, E., Zenhäusern, G., Daubar, I., Fernando, B., Garcia, R., Posiolova, L., Panning, M.   +47 more
openaire   +9 more sources

Crustal structure beneath Cameroon from EGM2008

Geodesy and Geodynamics, 2014
We used the Earth Gravitational Model (EGM2008) data sets to analyze the regional gravity anomalies and to study the underground structures in Cameroon. We first created a high-resolution Free-Air anomaly database, then corrected the gravity field of the
Ngatchou Heutchi Evariste, Liu Genyou, Tabod Charles Tabod, Kamguia Joseph, Nguiya Severin, Tiedeu Alain, K.E. Xiaoping   +6 more
doaj   +1 more source

Crustal Structure and Dynamics of Botswana [PDF]

Journal of Geophysical Research: Solid Earth, 2018
AbstractWe present the first nationwide crustal thickness and Vp/Vs maps for Botswana based on the analysis of new P wave receiver functions of NARS‐Botswana network integrated with previous receiver function results in Botswana. Using H‐K analysis, we found crustal thickness values ranging from 34 km for the Okavango Rift Zone to 49 km at the border ...
Islam Fadel, Mark van der Meijde, Hanneke Paulssen   +2 more
openaire   +2 more sources

CAN-HK : An a priori crustal model for the Canadian Shield [PDF]

, 2015
ACKNOWLEDGMENTS The United Kingdom component of the Hudson Bay Lithospheric Experiment (HuBLE) was supported by the Natural Environment Research Council (NERC) Grant Number NE/F007337/1, with financial and logistical support from the Geological Survey of
Bastow, I.D., Helffrich, G. R., Kendall, J-M, Snyder, D. B., Thompson, D. A., Wookey, J   +5 more
core   +3 more sources

Crustal structure beneath the central and western North China from receiver function analysis

Earthquake Science, 2022
The North China Craton (NCC) is one of the oldest cratons on earth. Several important tectonic transformations of Mesozoic-Cenozoic tectonic regime led to the destruction of the North China craton. The knowledge of crustal structure can provide important
Xin Gao, Yonghua Li, Xiaoyu Yang, Zhiyuan Ren   +3 more
doaj   +1 more source

3-D multiobservable probabilistic inversion for the compositional and thermal structure of the lithosphere and upper mantle: III. Thermochemical tomography in the Western-Central U.S. [PDF]

, 2016
Acknowledgments We are indebted to F. Darbyshire and J. von Hunen for useful comments on earlier versions of this work. This manuscript benefited from thorough and constructive reviews by W. Levandowski and an anonymous reviewer.
Aoki K., Biegler L., Coltorti M., Eggler D. H., Evans J. R., Gerya T., Kitanidis P. K., Quarteroni A., Turcotte D. L., Van Decar J. C., Winter J. D.   +10 more
core   +2 more sources

Future accreted terranes: a compilation of island arcs, oceanic plateaus, submarine ridges, seamounts, and continental fragments [PDF]

Solid Earth, 2014
Allochthonous accreted terranes are exotic geologic units that originated from anomalous crustal regions on a subducting oceanic plate and were transferred to the overriding plate by accretionary processes during subduction. The geographical regions that
J. L. Tetreault, S. J. H. Buiter
doaj   +1 more source

Integrated Geophysical Study of the Collision Between the North China Craton and the Yangtze Craton and Its Links With Craton Lithospheric Thinning

Frontiers in Earth Science, 2022
Unlike stable cratons elsewhere in the world, the lithosphere is strongly thinned in the east of both the North China Craton (NCC) and the Yangtze Craton (YZC) compared with the west.
Lihua Liu, Lihua Liu, Tianyao Hao, Tianyao Hao, Tianyao Hao, Chuanchuan Lü, Zhiqiang Wu, Kwanghee Kim, Hanjoon Kim, Ya Xu, Ya Xu   +10 more
doaj   +1 more source