الجلاميد المنقولة Glacial erratic or Erratic boulder، هي الجلاميد التي تنقلها المثالج، من موضع نشأتها إلى مكان آخر بعيد.[1]
التشكيل
Multiple erratics on the terminal moraine of the Okanagon Lobe. Cascade mountains in the background.
جلاميد تنقلها الأنهار الجليدية
Two icebergs clearly retain fragments of the moraine (rock debris) that forms a dark line along the upper surface of the glacier. The inclusion of the moraine illustrates how land-based rocks and sediment are carried by ice.
Glacial erratic Ehalkivi with overground volume 930 متر مكعب (1،220 cu yd) (weight approximately 2،500 metric ton (2،800 short ton)*) in EstoniaArea exposed by the retreat of ألاسكا's Steller Glacier in August 1996, the western-most part of Bering Glacier's piedmont lobe. The ground surface is covered by glacial sediment deposited as lodgement and ablationtill. The erratic is an angular, 20-قدم (6.1 m)-high piece of gneiss. Bering Glacier, Alaska flows through Wrangell-Saint Elias National Park
Nonglacial erratics
تاريخ
أمثلة
جلاميد تنقلها المثالج
Example of mixed erratics. The boulder in the foreground is basalt. The boulder across the fence is granite.
