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单词 protalus
释义

protalus

/prəʊˈteɪləs/
Physical Geography
noun
A rocky ridge or lobe marking the lower edge of an existing or melted snow bank, composed of frost-fractured boulders and other coarse debris that have slid or rolled over the snow from a talus or scree higher up the slope, or been transported by solifluction from the talus. Chiefly attributive, especially in protalus rampart.

Origin

1930s. From pro- + talus.

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更新时间:2024/9/20 15:37:48