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Statements

Subject Item
dbr:Malumalu
rdf:type
geo:SpatialThing
rdfs:label
Malumalu
rdfs:comment
Malumalu is a volcanic seamount in American Samoa. Together with Savaii, Upolu and Tutuila, it forms a topographic structure close to the Tonga Trench, which lies about 100 kilometres (62 mi) south. Malumalu lies about 66 kilometres (41 mi) south of Ofu island and is also known as "Southeast Bank". It is about 25 kilometres (16 mi) wide at its base and is part of the Mula ridge, which extends to Tutuila.
geo:lat
-14.60794258117676
geo:long
-169.784912109375
dct:subject
dbc:Seamounts_of_the_Pacific_Ocean dbc:Volcanoes_of_American_Samoa dbc:Holocene_volcanoes
dbo:wikiPageID
60534311
dbo:wikiPageRevisionID
1112814983
dbo:wikiPageWikiLink
dbc:Holocene_volcanoes dbr:Savaii dbr:Upolu dbc:Volcanoes_of_American_Samoa dbr:Isotope_ratio dbr:Seamount dbc:Seamounts_of_the_Pacific_Ocean dbr:Mantle_plume dbr:Ofu-Olosega dbr:American_Samoa dbr:Samoa_hotspot dbr:Ta'u dbr:Slab_(geology) dbr:Actinide dbr:Hawaii dbr:Vailulu'u dbr:Tutuila dbr:Tonga_Trench
dbo:wikiPageExternalLink
n9:viewcontent.cgi%3Farticle=1001&context=geology_pubs n13:Reinhard_et_al-2019-Geochemistry%2c_Geophysics%2c_Geosystems.pdf
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n16:AY6y9 wikidata:Q65040368
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dbt:Volcanology-stub dbt:Convert dbt:Sfn dbt:Coord dbt:Refbegin dbt:Reflist dbt:Cite_journal dbt:Refend dbt:Short_description
georss:point
-14.607943 -169.784919
dbo:abstract
Malumalu is a volcanic seamount in American Samoa. Together with Savaii, Upolu and Tutuila, it forms a topographic structure close to the Tonga Trench, which lies about 100 kilometres (62 mi) south. Malumalu lies about 66 kilometres (41 mi) south of Ofu island and is also known as "Southeast Bank". It is about 25 kilometres (16 mi) wide at its base and is part of the Mula ridge, which extends to Tutuila. The seamount is a young volcano at the eastern end of a lineament that begins on Tutuila. This lineament has been named the "Malu trend" (in contrast to the "Vai trend" farther northeast, which runs between Ofu, Ta'u and Vailulu'u). This is comparable to the "Kea" and "Loa" trends in Hawaii. Malumalu is not much older than Vailulu'u, which has erupted in historical time. Actinide isotope ratios indicate the occurrence of at least three volcanic events in the last 300,000 years, including at least two in the last 150,000 years and at least one in the last 8,000 years. According to one model of the behaviour of the Samoa hotspot, volcanic activity at Malumalu will decline in the next 10,000 - 100,000 years as the mantle plume is pushed farther northeast to Vailulu'u by mantle flow generated by the Tonga slab.
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POINT(-169.78491210938 -14.607942581177)