۱۳۹۰ شهریور ۳۰, چهارشنبه

شکل چرخشی رودخانه به سبب برخورد شهابسنگ The Wembo-Nyama Feature - Democratic Republic of Congo



This circular feature could be one of the largest asteroid impact sites on Earth
 

What Earth Processes Produce Circular Features?


In the center of the Democratic Republic of Congo, the Unia River flows around a circular structure known as the Wembo-Nyama feature. Several things in nature leave a circular footprint such as this, including volcanoes and uplifted domes. However, Italian scientists from the University of Padova believe that the Wembo-Nyama feature is an impact crater. If the 36–46-kilometer-wide feature is a crater, it is among the largest in the world. 

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