TY - JOUR T1 - A highly mobile Laurentide ice sheet revealed by satellite images of glacial lineations JO - Nature PY - 1990/01/01 AU - Boulton GS AU - Clark CD ED - DO - DOI: 10.1038/346813a0 VL - 346 IS - 6287 SP - 813 EP - 817 Y2 - 2024/12/22 ER -