短语词组短语varve clay 纹泥varve sediments 纹状沈积物l varve 墒状粘glacial varve 冰川纹泥marine varve 海洋季候泥Varve Clays 季候泥graded varve 粒级纹泥drainage varve 厚层纹泥diatactic varve 分粒季泥 返回 varve