Rifts are where plumes of heat escape from the core. The volcano in Hawaii sits above a descending plume that is the center of the 'ring of fire' which is where the magma flow starts to flow along the bottom of the crust. It releases heat for that whole journey.
They are characteristically composed of ancient crystalline basement rock, which may be covered by younger sedimentary rock. They have a thick crust and deep lithospheric roots that extend as much as several hundred kilometres into the Earth's mantle.
There is only 1 Hawaiian volcano? Rifts are were heat escapes from the mantle not the core and it's bupkis. Rifts drive drift and force subduction. If Rifts were related to climate, dramatic volcanism and earthquakes would be nonstop. Drift would be meters per year not mm.Rifts are where plumes of heat escape from the core. The volcano in Hawaii sits above a descending plume that is the center of the 'ring of fire' which is where the magma flow starts to flow along the bottom of the crust. It releases heat for that whole journey.
You just said Hawaiian volcanoes were from a plume. That's not subduction. And the Cascades are a completely different type of volcano with completely different composition of discharge.The ring of fire expands, the subduction is under Hawaii and the surrounding continents, such as BC
https://www.nationalgeographic.org/encyclopedia/ring-fire/
Divergent Boundaries
A divergent boundary is formed by tectonic plates pulling apart from each other. Divergent boundaries are the site of seafloor spreading and rift valleys. Seafloor spreading is the process of magma welling up in the rift as the old crust pulls itself in opposite directions. Cold seawater cools the magma, creating new crust. The upward movement and eventual cooling of this magma has created high ridges on the ocean floor over millions of years.
The East Pacific Rise is a site of major seafloor spreading in the Ring of Fire. The East Pacific Rise is located on the divergent boundary of the Pacific Plate and the Cocos Plate (west of Central America), the Nazca Plate (west of South America), and the Antarctic Plate. The largest known group of volcanoes on Earth is found underwater along the portion of the East Pacific Rise between the coasts of northern Chile and southern Peru.
If you can't follow what was written how can you have any worthwhile knowledge in your brain.You just said Hawaiian volcanoes were from a plume. That's not subduction. And the Cascades are a completely different type of volcano with completely different composition of discharge.
Look up the gasses involved between the two types and learn.
Now that what I said is clear the part about why they are different can be explained. The Pacific Rift off the coast of BC started out breaking the crust at the AB/BC border. BC was created by the softest layers being scraped of the material that was being pushed to the east under the Canadian Shield. It does not start descending until it meets the magma flowing westward from the Atlantic Rift.You just said Hawaiian volcanoes were from a plume. That's not subduction. And the Cascades are a completely different type of volcano with completely different composition of discharge.
Look up the gasses involved between the two types and learn.
Yeah, one volcano per island. If it has 100 outlets that is still the same volcano.There is only 1 Hawaiian volcano?
The mantle does not create it's own heat, it gets it from deeper and send it to the coldness of space eventually.Rifts are were heat escapes from the mantle not the core and it's bupkis.
The rates do not have to match each other, nor does it mean the suducted rock goes down into the denser material rather than being pushed along the bottom of the crust. 2,000 miles later the molten material descends down to the core or a dividing line and then heated from the layer below that is transferred rather than matter is exchangedRifts drive drift and force subduction.
Both of them are non-stop. The rifts have a max/min speed but you would need a pretty detailed map ir some other signs. The floods from glacial melt is well documented in the west of NA so there is your missing timelineIf Rifts were related to climate, dramatic volcanism and earthquakes would be nonstop.
For a long time most of the flow from the Pacific Rift was going only to the west because there was too much resistance from the Shield for much to go to the east. East of Japan it stall and the rift there is only opening up to the west of the crack, Japan should be rising in height as well as anyplace else in a similar position. AB/BC border 200M ago was the same situation.Drift would be meters per year not mm.
NO! ABSOLUTELY F-CKING NO.
What f-ck is wrong with you?
Gravity=pressure=friction=heat.
What do you not grasp about that?