Assertion: archipelago's island | /r/HasProperty | formed
Facets:
value: because of the action of minute organisms
type: CAUSE
value: from raising the ocean
type: OTHER
Source sentences:
text: The islands are formed from marine deposits of Early and Middle Jurassic age (about 160 to 200 million years old) and are covered by thick basaltic crusts.
text: Apart from the Capelinhos volcano in 1957–58, the last recorded instance of "island formation" occurred off the coast of São Miguel, when the island of Sabrina was briefly formed.
text: Continental islands are formed from a continental shelf such as the British Isles.
text: Tectonic islands have been formed because of the movement of the Earth’s crust such as the Barbados.
text: Oceanic islands have been formed from raising the ocean depths such as St. Helena.
text: Coral islands have been formed because of the action of minute organisms known as coral polyps.
text: Continental islands are formed straight from the continental shelf like the British Isles.