i am not sure......
sandstone, mudstone, shale, grey wacke. All classified by their grainsize. They're used to determine paleo-turbidity sequences. Refer to hjulstrom diagram for more detailed classification chart
Please describe what you mean by soft and rephrase the question.
hiya
Because sedimentary rocks are soft rocks
Hard matrix is supposed to be used for digging hard rocks and soft matrix for soft rocks. It's quite confusing to me
Sandstone, limestone, and shale are examples of sedimentary rocks. Granite, basalt, and obsidian are examples of igneous rocks.
Igneous Rocks
ugly
Basalt and rhyolite are examples of fine-grained igneous rocks.
Basalt and rhyolite are examples of fine-grained igneous rocks.
Soft objects have a low rigidity and can easily change shape when pressure is applied, while hard objects have high rigidity and maintain their shape under pressure. Soft objects often have a smooth surface texture, while hard objects are typically rough or firm to the touch. Examples of soft objects include pillows or sponge, while examples of hard objects include rocks or metal.
Examples of non-foliated metamorphic rocks are quartzite and marble.