The existence of life on Earth begin with the cooling of Earth. until now various theories and research have been carried out to exactly know the major factors that were involved in the cooling of earth.
Well this is Gateway to knowledge and today i will let you know that the cooling of earth was caused by eruptions and not by meteors by observing the ancient sediments found in the central texas cave appears to solve this mystery that why the earth cooled suddenly about 1300 years ago previously the researchers believed that the event which cooled the earth by about 3 degree centigrade was caused by an extraterrestrial impact with the earth such as a meteor collision but now the researchers have found that the evidence left in the layers of sediment in the hall’s cave were almost certainly.
Cooling Of Earth Caused By Eruptions not Meteors
the result of volcanic eruptions the hall’s cave located in the texas hill country has a sediment record extending over 20 hundred years it is an exceptional record that offers a unique opportunity for interdisciplinary cooperation to investigate a number of important research questions one big question was did an extraterrestrial impact occur near the end of the last ice age about 1300 years ago as the ice sheets covering canada were melting and cause an abrupt cooling that thrusts the northern hemisphere back into the ice age for an extra 1200 years
the team of researchers found that within the cave are layers of sediment which were first identified by thomas stafford, are the main trigger to identify and answer the question that started this ancient cold snap the event also likely helped to identify the cause of extinction of large mammals such as mammoth horse and camel that once warmed in north america this work shows that the geochemical signature associated with the cooling event is not unique
but occurred four times between 9000 years and 1500 years ago thus the trigger for this cooling event didn’t come from space the researchers took every avenue to come up with an alternative explanation or even avoid this conclusion a volcanic eruption had been considered one possible explanation but was generally dismissed because there was no associated geochemical fingerprint after volcano erupts the global spread of aerosol reflects incoming solar radiation away from the earth and may lead to global cooling powers eruption for one to five years depending on the size and time scale of the eruption.
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the younger dryas which occurred about 1300 years ago disrupted distinct warming at the end of last ice age. the Earth’s climate may have been at a tipping point at the end of younger dryas possibly from the ice sheet discharged into the north atlantic Ocean Enhanced snow cover and powerful volcanic eruption that may have in combination led to intense northern hemisphere cooling.
This period of rapid cooling coincides with the extinction of a number of species including camels and horses and the appearance of clovis archaeological traditions the scientists completed the isotopic analysis of the sediments collected from the halls cave they found that the elements such as iridium ruthenium platinium and palladium were not present in the correct proportion meaning.
that a meteor or asteroid could not have caused the event the isotopic analysis and the relative proportion of the elements match those that were found in previous volcanic gases volcanic eruption causes their most severe cooling near the source usually in the year of eruption with substantially less cooling in the years after the eruption the younger dryas cooling lasted about 1200 years so a sole volcanic eruptive cause is an important initiating factor but other earth system changes such as cooling of the oceans and more snow covers were needed to sustain this colder period so the scientists found
the conclusion that the chemical analysis is found in sediments dating to the beginning of younger dryas are the result of volcanism and not an extraterrestrial impact so that’s all from my side if you enjoyed my today’s video then do like and subscribe to my channel but wait a minute if you are a book reader and you want to read some amazing books or you want to buy some other products from an online store then below in the description is the link of my amazon account go and check it out