Question

25-26 dav us hses - minerals, nucleus,
directions: drag the correct answer to the box.
classify the sedimentary rock in each image as biological/organic, chemical, or clastic.
clastic
biological/organic
chemical

Explanation:

• Clastic sedimentary rocks are formed from the accumulation of fragments (clasts) of pre - existing rocks. The first rock image appears to have a texture composed of various sized fragments, which is characteristic of clastic rocks.
• Biological/organic sedimentary rocks are formed from the accumulation of biological materials. The second rock image has a texture that resembles it could be formed from biological remains (e.g., coral reefs or shells), so it is classified as biological/organic.
• Chemical sedimentary rocks are formed by the precipitation of minerals from water. The third rock image has a crystalline texture that is typical of chemical precipitation (e.g., rock salt or gypsum), so it is classified as chemical.

Answer:

First rock: Clastic, Second rock: Biological/Organic, Third rock: Chemical