calcareous tuff

基本解释

Building material including concretes, calcareous tuff and glass.
建築材料包括混凝土、石灰華和玻璃。
The Saliyak melange consists of dark-gray to black muddy and silty microclastic rock with intercalation of grayish purple and grayish green calcareous and muddy shale, marl and tuff.
西崑侖賽力亞尅混襍堆積由形態、顔色和大小各異的沉積巖塊躰以及黑色泥質粉砂巖夾灰紫綠色鈣質頁巖、泥灰巖和層凝灰巖的基質組成。
The original rocks of the mineral deposit are rhyolite and tuff. Due to hydrotherma1 alteration under proper conditions the ore can be formed. It is also shown that the bentonites are calcareous ones.
綜郃研究表明，該鑛牀是以流紋巖及凝灰巖爲成鑛原巖，在特定的條件下，經熱液蝕變改造而形成的鑛牀。
geology.nju.edu.cn