How do oceanic plateaus form? Clues from drilling at Shatsky Rise

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doi: 10.1029/2011EO050001
Author(s): Sager, William W.; Sano, Takashi; Geldmacher, Jorg
Author Affiliation(s): Primary:
Texas A&M University, College Station, TX, United States
Other:
National Museum of Nature and Science, Tokyo, Japan
Integrated Ocean Drilling Program, United States
Volume Title: Eos, Transactions, American Geophysical Union
Source: Eos, Transactions, American Geophysical Union, 92(5), p.37-38. Publisher: American Geophysical Union, Washington, DC, United States. ISSN: 0096-3941 CODEN: EOSTAJ
Note: In English. 8 refs.; illus., incl. strat. col., geol. sketch map
Summary: Oceanic plateaus are huge basaltic constructions whose eruptions may briefly outstrip even global mid-ocean ridge magma production. Although they form great undersea mountains, their origins are poorly understood. A widely accepted explanation is that oceanic plateaus are built by massive eruptions from the head of nascent thermal mantle plumes that rise from deep in the mantle to the surface [e.g., Duncan and Richards, 1991]. An alternative is that plateaus erupt by decompression melting of fusible patches in the upper mantle at plate edges or zones of extension [Foulger, 2007].
Year of Publication: 2011
Research Program: IODP Integrated Ocean Drilling Program
Key Words: 05 Petrology, Igneous and Metamorphic; Basalts; Cores; Crust; Emplacement; Eruptions; Expedition 324; IODP Site U1346; IODP Site U1347; IODP Site U1348; Igneous rocks; Integrated Ocean Drilling Program; Lava flows; Lithofacies; Mantle; Mantle plumes; Mid-ocean ridge basalts; North Pacific; Northwest Pacific; Oceanic crust; Pacific Ocean; Plateaus; Shatsky Rise; Volcanic rocks; West Pacific
Coordinates: N342456 N342456 E1592254 E1592254
N380024 N380024 E1623843 E1623843
N323029 N323029 E1591405 E1591405
Record ID: 2011040322
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