单词	periglacial
释义	periglacial /ˌpɛrɪˈɡleɪʃ(ə)l / /ˌpɛrɪˈɡsɪəleɪʃ(ə)l/ adjective Geology Relating to or denoting an area adjacent to a glacier or ice sheet or otherwise subject to repeated freezing and thawing.These may be of fluviatile, glacial, periglacial, lacustrine, aeolian, or marine origin.... Sandstone-filled cracks exposed at the unconformity are viewed as periglacial frost fissures. Hence the cracks probably developed following glacial retreat when the area containing the eroded surface of Bedford Sandstone was in a periglacial setting.
随便看	nerve tract nerve trunk nerve tube nerve tubule nerve tunic nerve twig nerve war nerve-wracking Nervii nervily nervine nerviness Nervi, Pier Luigi nervish nervism nervose nervosisme nervosity nervous nervous breakdown nervous energy nervously Nervous Nellie nervousness nervous stomach

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