About: President Jackson Seamounts

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An Entity of Type : yago:WikicatRidgeVolcanoes, within Data Space : dbpedia.org associated with source document(s)
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The President Jackson Seamounts are a series of seamounts (underwater volcanoes) located on the Pacific Plate, off of California. It consists of 8 seamounts, 4 independent and 4 morpohologically fused, just west of the northern Gorda Ridge. They are generally very small, and arranged linearly.

Attributes	Values
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rdfs:label	President Jackson Seamounts (en)
rdfs:comment	The President Jackson Seamounts are a series of seamounts (underwater volcanoes) located on the Pacific Plate, off of California. It consists of 8 seamounts, 4 independent and 4 morpohologically fused, just west of the northern Gorda Ridge. They are generally very small, and arranged linearly. (en)
name	President Jackson Seamounts (en)
geo:lat	42.509998 (xsd:float)
geo:long	-127.769997 (xsd:float)
dcterms:subject	Seamounts of the Pacific Ocean Seamount chains Ridge volcanoes
Wikipage page ID	25589580 (xsd:integer)
Wikipage revision ID	1105806655 (xsd:integer)
Link from a Wikipage to another Wikipage	California Monterey Bay Aquarium Research Institute United States Geological Survey Vance Seamounts GLORIA sidescan sonar Seamount Seamounts of the Pacific Ocean Caldera Pacific Plate Fracture zone Gorda Ridge Pit crater Hyaloclastite Seamount chains Ridge volcanoes Pillow lava Submarine volcano Mountain chain Side-scan sonar SeaBeam
sameAs	President Jackson Seamounts President Jackson Seamounts President Jackson Seamounts President Jackson Seamounts
summit area	to (en)
dbp:wikiPageUsesTemplate	dbt:Infobox_Seamount dbt:Convert dbt:Coord dbt:Reflist dbt:Short_description
country	United States (en)
group	8 (xsd:integer)
map caption	Bathymetric mapping of the group. (en)
pushpin map	Pacific Ocean (en)
type	Submarine volcano Mountain chain
georss:point	42.51 -127.77
has abstract	The President Jackson Seamounts are a series of seamounts (underwater volcanoes) located on the Pacific Plate, off of California. It consists of 8 seamounts, 4 independent and 4 morpohologically fused, just west of the northern Gorda Ridge. They are generally very small, and arranged linearly. The assembly consists of 8 seamounts arranged in a chain. The easternmost of the seamounts is located about 53 km (33 mi) east of the axial ridge that spawned the volcanoes, Gorda Ridge. The chain was mapped initially with SeaBeam equipment in 1985, however its incomplete coverage limited its usefulness. A GLORIA sidescan survey conducted in 1986 further established the rough size and locations of the seamounts. A further sampling cruise by the United States Geological Survey (USGS) recovered pillow lava and hyaloclastite from 4 of the 8 volcanoes. The samples seemed to be of more primitive origin then those erupted elsewhere on the ridge. In 1998, the Monterey Bay Aquarium Research Institute conducted two dives on a cone cluster located southeast of the main structure. The chain consists of eight volcanoes. Of these, four are self-dependent, whereas the other four form twin fused, morphologically complex, flat-topped structures. The volcanoes form a linear chain, and are relatively small, measuring less than 10 km (6 mi) in diameter, and are nearly circular in shape. They average 47 km3 (11 cu mi)±14 km3 (3 cu mi) in volume, but range from 24 km3 (6 cu mi) to 68 km3 (16 cu mi). In addition to the eight main seamounts, there is a scattered disk of minor volcanic cones and flows about 13 km (8 mi) southeast of the chain. The summits of the seamounts, with the exception of the second one from the northwest, are all flat. Several have nested or cross-layered calderas and pit craters (29 in total), many of which push into the flank of the volcanoes. In several cases, newer volcanic structures have all but erased older ones. In addition to all this the seamounts are pocketed by multiple small cones, and are littered by debris ranging far and wide from the range. There is evidence of erosional activity throughout, with erosional valleys and landslide debris visible. (en)
gold:hypernym	Series
prov:wasDerivedFrom	wikipedia-en:President_Jackson_Seamounts?oldid=1105806655&ns=0
page length (characters) of wiki page	4259 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:President_Jackson_Seamounts
geo:geometry	POINT(-127.76999664307 42.509998321533)
is Link from a Wikipage to another Wikipage of	Vance Seamounts Gorda Ridge Outline of oceanography
is foaf:primaryTopic of	wikipedia-en:President_Jackson_Seamounts

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