crustose

常見例句

Evidence of emergence including sabkha dolostone, algal mat, bird-eyes and fenestral structure, mudcracks and crustose limonite has been found in the top of the Changhsingian reefs in Ziyun, Guizhou province.
貴州紫云長(zhǎng)興期生物礁頂部存在的出露證據(jù)有：（1）形成于薩勃哈蒸發(fā)環(huán)境的白云巖，（2）藻紋層沉積，（3）鳥眼和窗格構(gòu)造，（4）干裂縫和褐鐵礦風(fēng)化殼，等等。
crustose lichen
殼狀地衣