差不多有一半的南极海岸线由冰架构成，海岸地表平坦或稍有起伏。
Ice shelves make up nearly half of the Antarctic coastline and have level or gently undulating surfaces.
例如向斜、背斜、断层、盐丘，冰碛层之下结晶岩的顶面起伏形态，矿体以及粘土矿床等。
Among such features may be synclines and anticlines, geological faults, salt domes, undulations of the crystalline bedrock under a cover of moraine, ore bodies, clay deposits and so on.
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