Assertion: seamount | /r/HasProperty | inactive
Facets:
value: usually
type: TEMPORAL
value: volcanically
type: DEGREE
value: in the early miocene
type: TEMPORAL
value: with the neighbouring ampére seamount
type: OTHER
value: for a long time
type: TEMPORAL
Source sentences:
text: The alteration of carbonates by phosphates and the presence of phosphorite crusts indicate that the seamount has been inactive for a long time, although it may have been a source of debris that covers the seafloor to its east which may be of Pleistocene age.
text: Efforts at radiometric dating on Coral Patch Seamount have been unsuccessful, but fossil remains indicate that the seamount was volcanically active in the early Miocene together with the neighbouring Ampére Seamount, and a date of 31.2 ± 0.2 million years ago has been obtained for the Ampére-Coral Patch ridge.
text: Seamount is an active volcano built on the seafloor south of Kīlauea about 30 km (19 mi) from shore.
text: The seamount is an inactive volcano roughly as tall as the Sierra Mountains (2,300 m) and as wide as Monterey Bay (40km), yet its summit is far below the ocean surface (1,300 m).
text: Seamounts are usually inactive volcanoes that rise from the bottom of the ocean, but do not reach the surface.
text: Geologists suspected the seamount could be an active undersea volcano, but without evidence the idea remained speculative.
text: All the other seamounts in this chain are inactive because their source of magma, the Cobb hot spot, has moved out from underneath them.