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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
In: Earth and Planetary Science Letters. Elsevier: Amsterdam. ISSN 0012-821X, more
Peer reviewed article  

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Keywords
    Bottom topography; Earth mantle; Geochemistry; Lava flows; Mantle plumes; Petrology; Seamounts; Submarine volcanoes; ISE, East Pacific Rise, Lamont Sea Mounts; Marine

Authors  Top 
  • 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.

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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