[21] In terms of seismicity and ridge segmentation we divide the Arctic MOR system into four regional plate boundary provinces: the Spitsbergen Transform System; the West and East Gakkel Ridge; and the Laptev Sea (Figures 8–11).
Is the Arctic plate a tectonic plate?
Tectonic features of the Arctic Ocean and surrounding areas are summarized in this Chapter. … The mid-Arctic ridges connect eastward to the Laptev Sea, Far East Asia, after passing through the eastern Siberian continent. The plate boundaries are generally known to be tectonically stable and low seismic activities.
Is the Antarctic Plate a convergent boundary?
The Antarctic Plate has a very large system of boundaries on its perimeter which include
convergent
, divergent, and transform boundaries.
Is the Antarctic Plate convergent or divergent?
Today, about 95% of the Antarctic plate is surrounded by
divergent plate boundaries
: the Southwest Indian Ridge, the Southeast Indian Ridge, and the American-Antarctica Ridge.
What type of plate boundary is African Plate and Antarctic Plate?
Boundaries. The western edge of the African Plate is
a divergent boundary
with the North American Plate to the north and the South American Plate to the south which forms the central and southern part of the Mid-Atlantic Ridge.
Is the Antarctic Plate growing or shrinking?
Antarctica was once grouped as part of the supercontinent Gondwana with Australia and India. But about 100 million years ago, Antarctica broke apart to its current frigid location in the south pole. It’s estimated that the Antarctica major plate moves about
1 cm per year
[1].
Which is the largest plate?
There are major, minor and micro tectonic plates. There are seven major plates: African, Antarctic, Eurasian, Indo-Australian, North American, Pacific and South American. The Hawaiian Islands were created by
the Pacific Plate
, which is the world’s largest plate at 39,768,522 square miles.
Is Antarctic Plate oceanic?
The Antarctic Plate includes continental crust making up Antarctica and its continental shelf, along with
oceanic crust beneath the seas surrounding Antarctica
.
Which is the largest oceanic plate in the world?
The Pacific plate
is over 103,000,000 km2 in area. It is an oceanic plate, which is thinner than lithospheric continental plates.
What are divergent boundaries?
A divergent boundary occurs
when two tectonic plates move away from each other
. Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth’s mantle to the surface, solidifying to create new oceanic crust. The Mid-Atlantic Ridge is an example of divergent plate boundaries.
Is Antarctic plate a minor plate?
These divisions are inevitably somewhat arbitrary, but by convention we recognise seven main or “primary” tectonic plates: these are the
African Plate
: Antarctic Plate, Eurasian Plate, Indo-Australian Plate, North American Plate, Pacific Plate, and South American Plate.
Is the South American Plate convergent or divergent?
The South American Plate is the smallest major plate
But the eastern edge lies in the Atlantic Ocean at a
divergent plate boundary
. Along the African Plate boundary, these two plate boundaries pull apart from each other. This diverging plate motion creates some of the youngest oceanic crust on the planet.
What type of boundary is the Scotia Plate?
Transform fault boundaries
border the Scotia Plate to the north and south and there is a spreading boundary between it and the South Sandwich Microplate.
Which is the best example of a convergent plate boundary?
Answer:
The Washington-Oregon coastline of the United States
is an example of this type of convergent plate boundary. Here the Juan de Fuca oceanic plate is subducting beneath the westward-moving North American continental plate. The Cascade Mountain Range is a line of volcanoes above the melting oceanic plate.
What is the type of boundary between Pacific plate and Antarctic Plate?
The southern side is
a divergent boundary
with the Antarctic Plate forming the Pacific–Antarctic Ridge.
What is the difference between convergent and divergent plate boundaries?
Divergent boundaries
— where new crust is generated as the plates pull away from each other
. Convergent boundaries — where crust is destroyed as one plate dives under another.
