Geochemical and structural studies of the Lamont Seamounts: seamounts as indicators of mantle processes
Fornari, D.J.; Perfit, M.R.; Allan, J.F.; Batiza, R.; Haymon, R.; Barone, A.; Ryan, W.B.F.; Smith, T.; Simkin, T.; Luckman, M.A. (1988). Geochemical and structural studies of the Lamont Seamounts: seamounts as indicators of mantle processes. Earth Planet. Sci. Lett. 89(1): 63-83. https://dx.doi.org/10.1016/0012-821X(88)90033-7
In: Earth and Planetary Science Letters. Elsevier: Amsterdam. ISSN 0012-821X; e-ISSN 1385-013X, more
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| Keywords |
Chemistry > Geochemistry
Earth sciences > Geology > Petrology
Earth structure > Earth mantle
ISE, East Pacific Rise, Lamont Sea Mounts
Lava flows
Motion > Fluid motion > Fluid flow > Plumes > Mantle plumes
Topographic features > Submarine features > Seamounts
Topography > Topography (geology) > Bottom topography
Volcanoes > Submarine volcanoes
Marine/Coastal |
| Authors | | Top |
- Fornari, D.J.
- Perfit, M.R.
- Allan, J.F.
- Batiza, R.
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- Haymon, R.
- Barone, A.
- Ryan, W.B.F.
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- Smith, T.
- Simkin, T.
- Luckman, M.A.
|
| Abstract |
A chain of seamounts located just west of the East Pacific Rise (EPR) axis at 09 degree 55'N (herein called the Lamont Seamounts) have been investigated using Sea MARC I and Sea Beam sonar surveys, "Alvin" submersible dives, deep-sea camera tows and dredging. Comparison with lavas from the adjacent ridge crest suggests that magma plumbing and ascent mechanisms beneath the Lamont seamounts are separate from those along the EPR. In particular Seamount magmas appear to reflect near-primary melting events in the mantle whereas EPR lavas are the products of shallow-level crystallization and mixing in crustal magma chambers. |
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