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The Vine–Matthews–Morley hypothesis, also known as the Morley–Vine–Matthews hypothesis, was the first key scientific test of the seafloor spreading theory of continental drift and plate tectonics. Its key impact was that it allowed the rates of plate motions at mid-ocean ridges to be computed.
Plate motion based on Global Positioning System (GPS) satellite data from NASA JPL. Each red dot is a measuring point and vectors show direction and magnitude of motion. Tectonic plates are able to move because of the relative density of oceanic lithosphere and the relative weakness of the asthenosphere.
In addition, the cooling plate model explains the almost constant depth and heat flow observed in very old seafloor and lithosphere. In practice it is convenient to use the solution for the cooling mantle model for an age-depth relationship younger than 20 million years. Older than this the cooling plate model fits data as well.
The tectonic relationship of the Sangihe plate, Halmahera plate, and the Molucca Sea plate, plus the volcanic Halmahera Arc and the Sangihe Arc is complex. Their interrelationship constitutes the Molucca Sea Collision Zone. The north of this zone interlinks with the Philippine Mobile Belt.
Oceanic trench – Long and narrow depressions of the sea floor; Paleoclimatology – Study of changes in ancient climate; Paleomap – Map of continents and mountain ranges in the past based on plate reconstructions; Seamount – Mountain rising from the ocean seafloor that does not reach to the water's surface
The plate itself features an asymmetrical morphology, configured in an inverted U-shape. The arc-arc collision zone of the Molucca Sea plate is characterized as a thick, low velocity layer, which is highly variable in density. [3] [6] The variable in density of the Molucca Sea plate led to different subduction velocities on the two sides. [3]
The Trobriand Trough contains large thrust sheets, spaced 5–7 km (3.1–4.3 mi) apart at the western landward slope of the trough, ponding sediments behind them and this is consistent with fairly recent convergence, and this would if current could fix the Trobriant plate against the Solomon Sea plate. [13] It is possible to model with the ...
Aegean Sea plate, also known as Hellenic plate – A small tectonic plate in the eastern Mediterranean Sea; Anatolian plate – Continental tectonic plate comprising most of the Anatolian Peninsula (Asia Minor) Azores microplate – Oceanic plateau in the North Atlantic Ocean [7] [8] Banda Sea plate – Minor tectonic plate underlying the Banda ...