Podcast
Questions and Answers
What is the key factor in naming chemical sedimentary rocks?
What is the key factor in naming chemical sedimentary rocks?
- The color of the rock
- The presence of fossils in the rock
- The minerals from which they are made (correct)
- The location where the rock is found
Which mineral is predominantly found in limestones?
Which mineral is predominantly found in limestones?
- Calcite (correct)
- Chalcedony
- Halite
- Gypsum
What is the defining characteristic of chalcedony?
What is the defining characteristic of chalcedony?
- Contains fossils
- Large quartz grains visible to the naked eye
- It is made up of halite
- Microcrystalline quartz with tiny grains (correct)
How are biochemical sedimentary rocks formed?
How are biochemical sedimentary rocks formed?
What does metamorphism refer to?
What does metamorphism refer to?
What geological process is responsible for regional metamorphism?
What geological process is responsible for regional metamorphism?
What distinguishes foliated metamorphic rocks from unfoliated rocks?
What distinguishes foliated metamorphic rocks from unfoliated rocks?
Why are slate rocks able to break along parallel planes easily?
Why are slate rocks able to break along parallel planes easily?
Which rock type is sometimes used as the base for pool tables?
Which rock type is sometimes used as the base for pool tables?
What gives phyllite rocks a bright, satiny luster?
What gives phyllite rocks a bright, satiny luster?
Which type of metamorphism can produce both quartz and marble?
Which type of metamorphism can produce both quartz and marble?
What is the main factor that prevents unfoliated rocks like quartz from becoming layered?
What is the main factor that prevents unfoliated rocks like quartz from becoming layered?
What type of rocks form from lava that cools rapidly on or near the Earth's surface?
What type of rocks form from lava that cools rapidly on or near the Earth's surface?
Which type of igneous rocks have visible crystals due to slow cooling within the Earth?
Which type of igneous rocks have visible crystals due to slow cooling within the Earth?
What is an extrusive igneous rock body that forms from a volcano known as?
What is an extrusive igneous rock body that forms from a volcano known as?
Why do extrusive igneous rocks have tiny crystals?
Why do extrusive igneous rocks have tiny crystals?
What type of igneous rocks cool slowly within the Earth's crust, allowing time for large crystals to form?
What type of igneous rocks cool slowly within the Earth's crust, allowing time for large crystals to form?
Which type of igneous rock has individual crystals that are not distinguishable to the naked eye?
Which type of igneous rock has individual crystals that are not distinguishable to the naked eye?
What is one of the factors that control metamorphism?
What is one of the factors that control metamorphism?
How does deep burial affect rocks in terms of temperature?
How does deep burial affect rocks in terms of temperature?
What is contact metamorphism primarily caused by?
What is contact metamorphism primarily caused by?
What happens to the chemical composition of most metamorphic rocks during metamorphism?
What happens to the chemical composition of most metamorphic rocks during metamorphism?
What is the approximate temperature at which rocks experience metamorphism due to deep burial?
What is the approximate temperature at which rocks experience metamorphism due to deep burial?
Apart from temperature, what other major factor influences metamorphism?
Apart from temperature, what other major factor influences metamorphism?
What type of metamorphic rock is characterized by visibly prominent, parallel sheets of mica?
What type of metamorphic rock is characterized by visibly prominent, parallel sheets of mica?
Which metamorphic rock type usually forms at medium-high metamorphic grades?
Which metamorphic rock type usually forms at medium-high metamorphic grades?
What mineral is commonly found in schist besides micas?
What mineral is commonly found in schist besides micas?
Why does gneiss start to contain dark minerals like hornblende as metamorphic grade increases?
Why does gneiss start to contain dark minerals like hornblende as metamorphic grade increases?
Which type of metamorphic rock does not contain quartz?
Which type of metamorphic rock does not contain quartz?
What distinguishes the foliation surfaces of phyllite from those of schist?
What distinguishes the foliation surfaces of phyllite from those of schist?
