Recent discoveries about our planet, its rocks, and other “stone” topics
Larger crystals take time to grow, is a classical understanding in mineralogy. But recently, scientists have shown that some of the Earth’s finest gemstones like emerald, aquamarine, topaz and others can also grow in minutes.
Natural nanodiamonds can also form through low pressure and temperature geological processes in oceanic rocks, not only by crystalizing the cubic system of carbon under ultra-high-pressure conditions at great depths in the Earth’s mantle. Spanish scientists have confirmed such processes in the Moa-Baracoa Ophiolitic Massif, in Cuba, which underwent mineral alterations due to marine water infiltrations.
A new species of small pterosaur – similar in size to a turkey – has been discovered, which is unlike any other pterosaur seen before due to its long slender toothless beak. Careful searching of the late Cretaceous Kem Kem strata of Morocco, where this particular bone was found, revealed additional fossils of the animal, which led to the team concluding it was a new species with a long, skinny beak, like that of a Kiwi.
Changes in the Earth’s climate over the last 66 million years are revealed in unprecedented detail in the new global “climate reference curve“. It is the first record to continually and accurately trace how the Earth’s climate has changed since the great extinction of the dinosaurs.
(25.10.2020, USA: 10.25.2020)