Common Examples of Sedimentary Rocks Found in Nature

📚 Quick Study Guide

• 🌍 Sedimentary rocks are formed from pre-existing rocks or pieces of once-living organisms. They form from deposits that accumulate on the Earth's surface.
• 🌧️ Weathering and erosion break down rocks into smaller pieces.
• 🌊 Sediment is transported by water, wind, or ice.
• 🧱 Sedimentary rocks are often layered (stratified).
• 🧪 Common types include:
• 🪨 Clastic (formed from fragments of other rocks)
• 🧪 Chemical (precipitated from solutions)
• 🪴 Organic (formed from the remains of plants and animals)

Practice Quiz

1. Which of the following is a common example of a clastic sedimentary rock?
   1. A. Limestone
   2. B. Sandstone
   3. C. Rock Gypsum
   4. D. Coal
2. Limestone is primarily composed of which mineral?
   1. A. Quartz
   2. B. Feldspar
   3. C. Calcite
   4. D. Gypsum
3. Which type of sedimentary rock is formed from the accumulation and compaction of plant matter?
   1. A. Shale
   2. B. Conglomerate
   3. C. Coal
   4. D. Chert
4. What process is essential for the formation of clastic sedimentary rocks?
   1. A. Metamorphism
   2. B. Volcanism
   3. C. Weathering and Erosion
   4. D. Crystallization
5. Which of the following is an example of a chemical sedimentary rock?
   1. A. Shale
   2. B. Breccia
   3. C. Rock Salt
   4. D. Siltstone
6. The presence of ripple marks in sedimentary rocks suggests what about the rock's depositional environment?
   1. A. Deep ocean environment
   2. B. High-energy environment with flowing water or wind
   3. C. Volcanic environment
   4. D. Metamorphic environment
7. Which sedimentary rock is characterized by its fine-grained texture and ability to be split into thin layers?
   1. A. Sandstone
   2. B. Shale
   3. C. Conglomerate
   4. D. Limestone