Talk:Ontong Java Plateau

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WikiProject Volcanoes (Rated Start-class, Mid-importance)
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WikiProject Geology (Rated Start-class, Low-importance)
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Rated start class[edit]

I rated this as a start class rather than as a stub, because it had some good references and a good image. I almost rated it as of mid importance for WPGeology, but couldn't quite get there. --Bejnar (talk) 09:15, 11 March 2012 (UTC)

Volume[edit]

It extruded some 100 million km3 of magma Obviously incorrect data, 100 million km3 = 10000 km * 10000 km * 1 km — Preceding unsigned comment added by 98.194.205.143 (talk) 16:57, 9 September 2013 (UTC)

At ~1% of the Earth's area, that comes in at 5 million square km, so the quoted total would imply an average thickness of 20km, which seem a little high, although the maximum was 30 km. According to Coutillot and Renne (2003), the total volume is 44.4 million km3 Table1, although it's not clear whether that includes the Hikurangi plateau as well. So the number is of the right order, although I've yet find a supporting ref for the number used in the article - I'll add a citation needed tag. Mikenorton (talk) 20:40, 9 September 2013 (UTC)
Actually the 100 million km3 is there in the first reference "do the Ontong Java, Manihiki and Hikurangi large igneous provinces represent a single ~100 million km3 magmatic pulse? " it says in the abstract and finishes by saying "Given the now unequivocal evidence that Osbourn Trough was a spreading ridge, we consider that these plateaus are remnants of a formerly contiguous Ontong Java–Manihiki–Hikurangi large igneous province emplaced at ∼120 Ma." Mikenorton (talk) 21:03, 9 September 2013 (UTC)