Texas researchers from the University of Houston, Texa A&M University, and Baylor University have finally discovered enough evidence about why earth cooled down so much 13,000 years ago which led to a temperature drop by 3 degrees Centigrade snd it is due to volcanoes. This is mainly due to a piece of evidence buried deep inside the Central Texas cave, where the sediments have preserved to form unique geochemical signatures from ancient volcanic eruptions where it was previously mistaken for extraterrestrial impacts.
The research study helps prove a lot of misconceptions about Earth and has been published in the journal Science Advances. The current research work shows that the geochemical signature associated with the cooling event is not unique but occurred four times between 9,000 and 15,000 years ago.
Earth ice age was due to volcanoes not meteors
The trigger for the cooling event on our planet is not something that came from outer space but rather something very close to our planet. Periodic volcanic eruptions are the reason why Global cooldown occurred. After a volcano erupts, the global spread of aerosols reflects incoming solar radiation away from Earth and may lead to global cooling post-eruption for one to five years, depending on the size and timescales of the eruption.
This event also likely helped cause the extinction of large mammals such as mammoths, horses, and camels that once roamed North America. The study indicates that the episode of cooling, scientifically known as the Younger Dryas, was caused by numerous coincident Earth-based processes, however, it was not an extraterrestrial impact.
The chemical anomalies found in sediments dating to the beginning of the Younger Dryas are the result of volcanic activities and not an extraterrestrial impact.
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Suryapratim Ray is an engineer, author, robotics hobbyist, and an active Quoran. Being a technical blogger, he covers the good, bad, and ugly of science on a regular basis at Sciencenews18. In addition to his passion for writing, he’s equally keen on learning classical music.