The Evolution of Lake Champlain Basin A billion years ago, Lake Champlain and all of North America was covered by huge glaciers. The air was rich in oxygen because of photosynthesis done by plants. The Adirondacks Mountains Mountain-building events made the then 20,000 feet Adirondack Mountains. Minerals such as garnet, anorthosite, and diopside came from metamorphic rocks. The Iapetus Ocean What is now the Champlain Valley started to rift 600 million years ago. It turned into the …
showed first 75 words of 632 total

showed last 75 words of 632 total
…found in New York and Vermont. This would mean that these animals once lived in that area. The Charlotte Whale In 1849, a Beluga whale was found by a railroad near Charlotte. The interesting thing about this was that it was found hundreds of miles away from the nearest ocean. We now know that whales swam in the Champlain Sea and were buried in sediment when they died. The Champlain Sea now exists as Lake Champlain.