calcareous shale

常見例句

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.
西昆侖賽力亞克混雜堆積由形態(tài)、顏色和大小各異的沉積巖塊體以及黑色泥質粉砂巖夾灰紫綠色鈣質頁巖、泥灰?guī)r和層凝灰?guī)r的基質組成。
The thin-bedded limestone and calcareous shale close to the top of the middle-term base-level cycle can be regarded as one of the important indicator for recognizing the middle-term base-level cycle.
同時，發(fā)現(xiàn)中期基準面旋回層序近頂部的薄層灰?guī)r和鈣質泥巖也是識別中期基準面旋回的重要標志之一。