Sedimentary Rocks: Clastic Sedimentary Rocks

The video tutorial explains classic rocks, which are made from broken pieces of other rocks. The term 'classic' is derived from the Greek word 'classtos', meaning broken. Classic rocks, also known as tridal rocks, are categorized based on grain size and shape. The tutorial describes various types of classic rocks, including conglomerates, which have smooth large fragments, and breschias, which have jagged fragments. It also covers how small particles like sand form sandstone, while even smaller particles like silt and clay form sedimentary rocks such as shale.

What is the origin of the term 'clastic' in geology?

• It originates from the French word for 'fragment'.

• It is derived from the Greek word meaning 'broken'.

• It is based on the German word for 'stone'.

• It comes from the Latin word for 'rock'.

Which type of clastic rock contains large, smooth fragments?

• Breccias

• Sandstone

• Shale

• Conglomerates

What distinguishes breccias from conglomerates?

• Breccias have smooth fragments, while conglomerates have jagged ones.

• Breccias are larger than conglomerates.

• Breccias contain jagged fragments, while conglomerates have smooth ones.

• Breccias are made of sand, while conglomerates are made of clay.

What type of rock is formed from sand particles?

• Conglomerates

• Sandstone

• Breccias

• Shale

Which sedimentary rock is generally formed from silt and clay?

• Breccias

• Conglomerates

• Shale

• Sandstone