Results 271 to 280 of about 459,162 (303)

Metal accumulation rates in East Pacific Rise metalliferous sediments

Marine Geology, 1983
Abstract Metal accumulation rates at a number of stations on the East Pacific Rise fracture zone at 9°S are determined and their areal variations are examined. The accumulation rates of Mn, Fe, Cu, Zn and Ni show their highest values at the Rise crest—fracture zone intersection with zones of lower accumulation rates around this site.
S.P. Varnavas, J. Papaioannou
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Small off-axis volcanoes on the East Pacific Rise

Earth and Planetary Science Letters, 1996
Abstract A study of Sea Beam bathymetry and SeaMARC II side-scan sonar data allows a quantitative measure of the contribution of off-axis volcanism to the creation of abyssal hill topography on the East Pacific Rise (EPR) 9°15′N–9°50′N. In order to assess the role of off-axis volcanism, the distribution of volcanic edifices within 35 km of the ridge ...
Russ T. Alexander, Ken C. Macdonald
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Small non-overlapping offsets of the East Pacific Rise

Nature, 1986
High-resolution bathymetric surveys1,2 of the East Pacific Rise (EPR) reveal that in addition to overlapping spreading centres (OSCs), the crest of the EPR is offset tiny amounts by smaller features. Recently, Langmuir et al. have shown that despite their subtle bathymetric expression, these small offsets, bends and kinks of the EPR, collectively ...
Rodey Batiza, Steven H. Margolis
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Abyssal hills, magnetic anomalies and the east pacific rise

Earth and Planetary Science Letters, 1967
Abstract Long ridges and troughs are characteristic of the East Pacific rise off North and Central America. The trends of the topography are parallel to the trends of magnetic anomalies but are not specifically related. Locally the topography, like the magnetic anomalies, shows a gross symmetry and the sea floor spreading hypothesis could account for
H.W. Menard, Jacqueline Mammerickx
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Northern East Pacific Rise: Magnetic anomaly and bathymetric framework

Journal of Geophysical Research: Solid Earth, 1982
The oceanic crust in the eastern Pacific between 7°N and 30°N and east of 127°W contains a fairly complete history of the spreading centers associated with the East Pacific Rise since 25 m.y. B.P. (late Oligocene). In this paper, we have summarized the seafloor spreading magnetic‐anomaly data and the bathymetric data that reflect the record of this ...
Kim D. Klitgord, Jacqueline Mammerickx
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The East Pacific Rise and the thermal model

Journal of Geophysical Research: Solid Earth, 1983
Although the thermal mode of lithosphere cooling can be used to predict the East Pacific Rise topography reasonably well, it does not adequately predict the observed gravity when the zero temperature boundary condition is at the seafloor. The misfit arises primarily because this model predicts thermally lowered densities in the crust at the rise axis ...
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Origin of metalliferous sediments from the East Pacific Rise

Earth and Planetary Science Letters, 1973
Abstract The distribution of several metals in East Pacific Rise sediments, when normalized to Al2O3, exhibit stronger maxima near the rise crest than when simply plotted on a carbonate-free basis. The similarity (1) between the distribution of metals in ridge sediments and previously measured mean heat flow values and (2) between the composition of ...
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Anomalous234U/238U on the East Pacific rise

Earth and Planetary Science Letters, 1971
H. Herbert Veeh, Kurt Boström
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The East Pacific Rise Geologic Data Synthesis

Proceedings OCEANS, 2005
S.A. Tighe, P.J. Fox, R.S. Detrick, R. Tyce   +3 more
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The Crest of the East Pacific Rise

Scientific American, 1981
Ken C. Macdonald, Bruce P. Luyendyk
openaire   +1 more source