The huge hole that cuts through the Arizona region has long been the subject of debate among the scientific community. Until now, estimates of the age of this natural giant, mostly based on the dating of the sediments that form it, varied between 5 and 17 million years. However, new research analyzing the distribution of helium atoms in rocks indicates that the Grand Canyon began to form much earlier, no less than 70 million years ago.
In the most recent history of the Alhama de Murcia fault, an international group of researchers has identified six large earthquakes with a magnitude greater than 7. This fault is a fracture plane of the ground that crosses the entire earth's crust, therefore, to identify Due to the prehistoric earthquakes in its walls, the scientists made superficial excavations perpendicular to the fault - trenches between 20 and 30 meters long and four meters deep - that have allowed to obtain an exceptionally long paleoseismic record.
Pyrite is a mineral that has traditionally been known as 'madman's gold', since when it oxidizes it has a yellowish color reminiscent of the precious element. Ana Rodrigo, from the Geological and Mining Institute of Spain, tells us this and other curiosities about this mineral, but let's start at the beginning, what is the difference between a mineral and a piece of glass?
When two major earthquakes struck the Indian Ocean and the Indonesian island of Sumatra last April, a tectonic gap was set in motion within the Indo-Australian plate. Two investigations published in the journal Nature reveal that the earthquakes were 40% more intense than previously thought and analyze their consequences.
In theory, national governments should be responsible for monitoring tsunamis, cyclones and earthquakes and for alerts related to natural disasters. But the truth is that in recent years social media seems to be taking over, as just published by the International Development Research Center IDCR of Canada.
Zaccagnaite-3R is unique in the world, since it is the first mineral of its kind formed inside a cave, according to a study published in the American Mineralogist journal. Zaccagnaites are elements of the group of hydrotalcites and are of great interest for their numerous applications in industrial processes, in water treatment and in pharmacy.
A team of geologists from Yale University (USA) has proposed a new hypothesis about where the great continental blocks will move and what their distribution will be in millions of years. As described today in the journal Nature, Eurasia and America would merge into a future supercontinent, called Amasia, in a place near the North Pole. Furthermore, the Arctic Ocean and the Caribbean Sea would cease to exist. And North and South America would merge.
A group of researchers from France and the United Kingdom has analyzed more than 300 crystals formed in the volcanic rocks of the Greek island of Santorini from different eruptive phases. And they have discovered that the accumulation of magma necessary for a volcanic eruption to occur could occur within a few decades.
Danni Büchner is invited to Sam Dylan's Halloween party. But the "Goodbye Germany" emigrant has no desire for many other party guests. And find clear words.
