The formation of the Bering Land Bridge connecting Asia to North America occurred much later than experts thought.
The Bering Land Bridge, a stretch of land that once connected Asia with North America, came into existence much later than experts previously thought, but humans likely crossed not long after it formed, according to a new study.
The new findings suggest that the growth of the ice sheets, which led to a subsequent drop in sea levels, occurred later in the glacial cycle, with the Bering Strait being open and flooded from at least 46,000 to 35,700 years ago, according to the study. "It means that more than 50% of the global ice volume at the Last Glacial Maximum grew after 46,000 years ago," study co-author Tamara Pico , assistant professor of Earth and planetary sciences at the University of California, Santa Cruz, said in a statement ."This is important for understanding the feedbacks between climate and ice sheets, because it implies that there was a substantial delay in the development of ice sheets after global temperatures dropped.
People likely started crossing the Bering Land Bridge as soon as it enabled passage between the continents, Pico said."Our results shorten the time window between the opening of the Bering Land Bridge and the arrival of humans in the Americas," the researchers wrote in the study.
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