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Prolongation of the land mass
The topographic differences between the land mass and
the deep ocean floor are geological in origin. A morphological
connection with the land mass demonstrates prolongation, but does not by
itself distinguish between submarine elevations and submarine ridges.
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Accretion & Suturing
Continents grow by accretion and suturing-the
addition of material along the boundaries where plates move together.
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Ridges & submarine elevations
Identification of oceanic ridges, submarine
elevations, and submarine ridges, and distinguishing among them may rely
on continuity of morphology, geology and tectonic
history with the land mass.
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Volcanic arcs
Arc volcanism is one of the most significant processes leading to continental growth.
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