Topic: Ice Cap

Researchers have identified specific chemical signatures, or impact proxies, that confirm massive cosmic strikes on the North American ice cap 12,800 years ago. These markers include nanodiamonds, carbon spherules, and melt glass similar to trinitite, which require temperatures exceeding 2,200 degrees centigrade to form. Because the primary impacts occurred on ice sheets miles deep, traditional craters were transient, leaving behind distinct layers of ash and shock effects in the soil rather than permanent geological depressions.