Tectonic plates can ‘annoy’ each other with zones of landlock
Evidence from deep past suggest dramatic subduction zones can spread like a conflict
Andes mountains formed from meeting the Nazca plate and the South American plate. Araarar, seen in a satellite image from February 20, 2000, one of many volcanic ranges in Andes.
Universal History Archives / Universal Images Group by Getty Images
Subduction zones, which a tectonic plate lives under the other, driving the most destructive earthquakes and tsunami in the world. how These hazardous zones come? A study on Geology presents the evidence that the subduction can spread like a conflict, jump from a plate of ocean to another – a hypothesis used to be difficult to prove.
This result is “not just speculative,” said the University of Lisbon Geologist João Duarte, who was not involved in research. “This study establishes an argument based on the geological record.”
Because others run in the crust underground, the entries are difficult to check. The new study gives a unique ancient example of potential subduction “infections.” The authors say they know neighboring collisions that prompts “the system of the Eastern fire
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Nearly 300 million years ago a scattered islands separated from ancient Tetys and Asia. The built-in subduction zones swallowed this ocean, launched the landmasses on a new continent and raising mountains from Turkey to Turkey. By 260 million years this subduction has passed as spread and began to destroy a neighboring pacific plate.
Ripley Clehorn; Source: USGS Earthquake Catalog (INFORMATION)
“The dying act of closing oceans may have affected the Pacific plate and start it under the underlying assignment,” as a geologist at Durham University in England. “In one form or another, it quits the past.”
The smoking gun in this case is “Dupal Anomalia,” indicated by a Geochemical Fingerprint from ancient tethys sea and what is the Indian Sea. If the authors of the study are unexpectedly found this signature on bulkalic volcanic volcanic from the western Pacific on a plate border. “It’s like looking at a person’s finger in a crime scene,” Allen said.
But the mechanism of spread remains mysterious. Researchers suspect changing faults – boundaries where plates slide each other, such as San Andreas Fault-can act as the collision of the collision of the collision of thick collisions, causing it to drown. Duarte compares the scenario of aluminum foil in water. “The foil is floating,” he said, “But the little tap is why it sinks.”
If the subduction spreads this way, can Atlantic OceanNext silent plate margins? Widespread 1755 Lisbon earthquakes patterns early subduction advance there. Duarte suggests the parts of Iberia and the Caribbean undergoing the initial stages of the process: “In another 100 million years a new Atlantic ‘ring a newly created Pacific.”
