Saprolite is formed by in-place chemical weathering of which rock types?

Saprolite is formed by in-place chemical weathering of which rock types?

• A. Igneous, metamorphic, or sedimentary rocks
• B. Only igneous rocks
• C. Only metamorphic rocks
• D. Only sedimentary rocks

Answer: (A)

Saprolite forms when bedrock undergoes intense in-place chemical weathering, transforming minerals into clays and oxides while the rock’s structure largely stays in place. This process can affect any rock type, so igneous, metamorphic, or sedimentary rocks can all produce saprolite under the right conditions (long exposure to weathering in warm, moist environments). That’s why the broad statement that saprolite results from in-place chemical weathering of all rock types is the best answer. Limiting it to a single rock type would ignore examples like saprolite forming from granite (igneous), schist or gneiss (metamorphic), or sandstone or limestone (sedimentary) when weathering is extensive enough.

Saprolite forms when bedrock undergoes intense in-place chemical weathering, transforming minerals into clays and oxides while the rock’s structure largely stays in place. This process can affect any rock type, so igneous, metamorphic, or sedimentary rocks can all produce saprolite under the right conditions (long exposure to weathering in warm, moist environments). That’s why the broad statement that saprolite results from in-place chemical weathering of all rock types is the best answer. Limiting it to a single rock type would ignore examples like saprolite forming from granite (igneous), schist or gneiss (metamorphic), or sandstone or limestone (sedimentary) when weathering is extensive enough.