… to form the Cocos and Nazca plates. This break is marked on the Nazca plate topographically …
The oldest Cocos Nazca magnetic anomalies parallel this boundary, implying that the early …

Seamount ecosystems host ecologically important species, including many that are found
nowhere else on Earth. The Salas y Gomez and Nazca Ridges, two adjacent seamount chains …

THE PRESENT title suggests the emphasis of this paper, not its total content. Essen tially, this
is an advance report on the 1952-53 Columbia University archaeological expedition in the …

… The rates along the Nazca -Pacific and Nazca -Easter spreading axes increase to the …
Nazca -Pacific plate boundary where spreading rates range from 145 to 160 km there are no Nazca -…

… 27?34S) reflect both variations in Nazca ?South American convergence parameters and the
… tectonic regime linked to changing Nazca ?South American convergence parameters. North …

… Let v n represent the velocity of the Nazca plate at a given station, v i represent the much
smaller velocity of the GPS antenna or monument relative to the Nazca plate due to local …

The results of a two-dimensional flexural analysis applied to the Andean margin, which is
based on the correlation between topography and Bouguer anomaly, are here reviewed in …

In this paper we describe a Gloria long?range sidescan sonar survey of the area around
95.5W on the Cocos? Nazca Rise, where a propagating rift has been predicted to occur. The …

… Nazca plate down to uppermost mantle depths of 30?60 km beneath this part of the present?day
forearc region. In addition to showing the Nazca … the lower oceanic Nazca plate or the …

A continuous Sea Beam swath along 2500 km of the crest of the fast?spreading East Pacific
Rise (EPR) defines the location and morphology of seven systems of spreading centers. …