Shale

Shale শব্দের উদাহরণ বাক্য (Example Sentences)

• As we drift downstream, the cliffs soar upward in a layered tapestry of pastels: pinkish limestone, buff-colored sandstone, and deep-red shale .
• Natural red chalk is obtained from the red ochre variety of haematite, natural grey chalk from brick clay, natural white chalk from the chalk variety of calcite or soapstone, and natural black chalk from carbonaceous shale .