The last strong earthquake in Mexico (September 2018), which had a magnitude of 8.2 degrees on the Richter scale, led to the appearance of strange alloys in the sky, as well as the cracking of a tectonic plate, as recent seismologists have discovered.
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"The fissure spread across the width of the tectonic plate," said seismologist Diego Melgar of the University of Diego.
As the Science Alert recalls, the Puebla-Morelos earthquake had its epicenter in the Pacific Ocean and was felt all over Mexico. Along the shore is the tectonic boundary between the Cocos plaque in the ocean and the North American, Caribbean and Panama plates. So the earthquakes in the region are not new, considering that the edge of the Cocos tectonic plate moves beneath these tectonic plates.
The earthquake called Tehuantepec on September 7, 2018, and the magnitude slightly less than 7.1 degrees Richter on September 19, 2018, are part of a rare earthquake with bent refractive lines. They started normally with the collision between two plates, one of them sliding beneath the other. "But then the Cocos tectonic plate began to penetrate under the Mexican shore and changed its course. It slopes horizontally under the tectonic plate on which Mexico is located, "Melgar said.
source: descopera
