1. Deep erosion, possibly by a continental ice sheet , happened during this time. 2. Shaped by continental ice sheets and significant sea-level changes helped create the climate. 3. Continental ice sheets have repeatedly advanced and retreated from the Puget Sound region.4. The coalesced continental ice sheet traveled south terminating in the vicinity of Chehalis, Washington. 5. As the continental ice sheet moved in from the north, it pushed moraine forward. 6. The Transantarctic Mountains bisect the continental ice sheets , with different ice flow dynamics on either side. 7. These chilly lakes among mountain peaks were separated from the continental ice sheet to the north. 8. The mass of ice from the continental ice sheets had depressed the rock beneath it over millennia. 9. Antarctica is home to more than 70 lakes that lie at the base of the continental ice sheet . 10. Starting at the last glacial maximum, 21, 000 years ago, continental ice sheets retreated and sea levels rose.
