The first of these glacial periods is often called the Huronian glaciation because it is well exposed in rocks just north of Lake Huron in southern Canada.
第一次冰期称为「休伦冰期」,因南部休伦湖北方的岩石中清晰可见。
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Evidence for ancient glaciations in the form of distinctive scrape marks left by glaciers were found in South America, Africa, India, and Australia, all regions near the equator with current climates far too warm to sustain a glacier.
在南美洲、非洲、印度和澳大利亚发现了古代形成证据,这些证据以留下独特刮痕形式出现,这些地区都位于赤道附近,但目前气候太温暖,无法维持存在。