The rock described is likely to be shale, which is a sedimentary rock composed of clay minerals. Shale is typically white to gray in color, medium soft in texture, and fine-grained.
Sedimentary rocks and igneous rocks can be broken down into smaller groups based on grain size. In sedimentary rocks, grain size categories include clay, silt, sand, and gravel. In igneous rocks, grain size categories include fine-grained, medium-grained, and coarse-grained.
fine grained or coarse grained
The grain size of welded tuff can vary depending on the specific conditions under which it was formed. Generally, welded tuff has a fine-grained to medium-grained texture due to the rapid cooling and solidification of the volcanic ash during welding. This process can result in a range of grain sizes, typically ranging from less than 1 millimeter to several millimeters in size.
Fine-grained atomic actions are smaller tasks that are indivisible, meaning they cannot be broken down further. Coarse-grained atomic actions are larger tasks that can be further divided into smaller actions. Fine-grained actions are more detailed and specific, while coarse-grained actions are broader and encompass multiple fine-grained actions.
Coarse
I'm not too sure
Sandstone is an example of a medium-grained clastic sedimentary rock. It is composed of sand-sized particles that are typically visible to the naked eye, giving it a medium-grained texture. Sandstone forms from the accumulation and cementation of sand grains.
sandstone
The list that orders rocks in increasing grain size and increasing grade of metamorphism is: shale (fine-grained) - slate (fine-grained) - phyllite (medium-grained) - schist (medium to coarse-grained) - gneiss (coarse-grained).
Amphibolite typically has a medium to coarse-grained texture with a foliated structure. It consists mainly of amphibole minerals such as hornblende, which gives it a dark color and a shiny appearance.
Sandstone is an example of a medium-grained clastic sedimentary rock. It is formed from the accumulation and cementation of sand-sized grains (0.06–2mm) of mineral, rock, and organic particles.
The rock described is likely to be shale, which is a sedimentary rock composed of clay minerals. Shale is typically white to gray in color, medium soft in texture, and fine-grained.
Yes, diorite is a coarse-grained igneous rock that typically contains a mixture of light and dark minerals. It forms from the slow cooling of magma deep within the Earth's crust, resulting in visible crystals that are larger than those in fine-grained rocks.
Three types of sedimentary rock texture are clastic (made of broken fragments), crystalline (formed from the precipitation of minerals), and biogenic (composed of organic material such as shells or plant remains).
A dolerite occurs in dikes and sills. These are dark, medium-grained igneous rocks that are typically containing olivine, plagioclase, and pyroxene.
coarse grained