Molten rocks in motion
Article Abstract:
Off- and on-axis magmas will differ in composition according to whether the flow is passive or active in the mantle, according to research designed to distinguished between different dynamic models of mantle melting beneath ocean ridges by comparing them with geochemical data from basalts that erupted in the northern section of the rapidly spreading East Pacific Rise. This research represents an initial stage in a more detailed understanding of the melting processes in the upper mantle and their part in creating ocean crust.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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Widespread active detachment faulting and core complex formation near 13 degrees North on the Mid-Atlantic ridge
Article Abstract:
A survey of the Mid-Atlantic Ridge near 13 degrees North containing a segment in which a number of linked detachment faults extend for 75km along one flank of the spreading axis is presented. Preliminary tests of seismicity and seafloor morphology father North along the Mid-Atlantic Ridge indicate that active detachment faulting occurs in many segments and that they are more important in the generation of ocean crust at the explored slow-spreading ridge than previously suspected.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2006
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Interaction of sea water and lava during submarine eruptions at mid-ocean ridges
Article Abstract:
Research indicates that vaporized sea water bubbles rise through lava flows and collect under the chilled crust. The steam bubbles at magmatic temperature may interact with flowing lava, influencing deep-sea volcanic processes and oceanic crustal construction.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2003
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