Results 21 to 30 of about 457,724 (300)
Geochemistry, Geophysics, Geosystems, 2023 A tectonic window into the upper 2,000 m of oceanic crust generated at the superfast spreading (∼142 mm/yr) southern East Pacific Rise exposes a continuous layered structure of basaltic lavas and sheeted dikes over gabbroic rocks.
J. A. Karson +8 more
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Variations in layer 2A thickness and the origin of the central anomaly magnetic high [PDF]
, 1994 The seismically determined off-axis thickening of the extrusive layer is apparently at odds with the magnetic anomaly high typically associated with the ridge crest.
Gee, Jeffrey S., Kent, Dennis V.
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Asymmetric seafloor depth across the Juan de Fuca Ridge caused by lithospheric heating
Communications Earth & Environment, 2023 Previous studies attribute asymmetries across the East Pacific Rise to horizontal temperature or pressure gradients in the deep asthenosphere caused by the Pacific Superswell, which, however, cannot explain asymmetries observed across the Juan de Fuca ...
Mengyu Wu, Michael H. Ritzwoller
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Dynamic triggering and earthquake swarms on East Pacific Rise transform faults [PDF]
, 2017 Author Posting. © American Geophysical Union, 2017. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution.
Cattania, Camilla +2 more
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Geophysical surveys on the East Pacific Rise -- Galapagos Rise system [PDF]
Geophysical Journal International, 1978 Summary. The East Pacific Rise at 12-15' S is topographically smooth with a crestal horst or linear volcanic peak marking the present axis of spreading. The Galapagos Rise at 14-17's is topographically rough with a possible central graben marking the extinct spreading axis.
R. N. Anderson +3 more
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Structure of the southern Jalisco subduction zone, Mexico, as inferred from gravity and seismicity [PDF]
Geofísica Internacional, 1999 A type-model of the geological structure of the Jalisco subduction zone was determined by matching gravity anomalies observed along a profile perpendicular to the Jalisco coast near Barra de Navidad with the gravitational attraction of a geologic cross
M. Mena +3 more
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BMC Evolutionary Biology, 2010 Background Comparative phylogeography recently performed on the mitochondrial cytochrome oxidase I (mtCOI) gene from seven deep-sea vent species suggested that the East Pacific Rise fauna has undergone a vicariant event with the emergence of a north ...
Plouviez Sophie +4 more
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262 Voyages Beneath the Sea: a global assessment of macro- and megafaunal biodiversity and research effort at deep-sea hydrothermal vents [PDF]
PeerJ, 2019 For over 40 years, hydrothermal vents and the communities that thrive on them have been a source of profound discovery for deep-sea ecologists. These ecosystems are found throughout the world on active plate margins as well as other geologically active ...
Andrew D. Thaler, Diva Amon
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Perspective Politice, 2022 The gradual and steady growth of China’s economic and military power over the past decades has reoriented the foreign policy priority of the United States from the Middle East to the East Asian region. In 2011, U.S.
Anca VASILACHE
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“Plate‐like” subsidence of the East Pacific Rise–South Pacific superswell system [PDF]
Journal of Geophysical Research: Solid Earth, 2004 In previous studies the removal of small‐scale features such as seamounts and oceanic islands from bathymetry has revealed a large and unusually shallow region in the South Pacific Ocean, which, at 3000 km wide and up to 1 km high, has been dubbed a “superswell.” These studies use statistical techniques based on finding the modal depth of the ...
Hillier, J, Watts, A
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