Advertisements
Advertisements
Question
Distinguish between the following: Sills and Dykes.
Solution
| Sills | Dykes |
| The collection of magma between layers of rocks is called sill. | The fillings of magma in the cracks or fissures of rocks are called dykes. |
APPEARS IN
RELATED QUESTIONS
Why is diamond clear and hard while graphite is soft?
Write True or False. Rewrite the false statement correctly :
Basalt is an example of an intrusive igneous rock.
What is the difference between the inner and the outer core?
Classify the following rocks by selecting the correct option given below:
limestone
How are sedimentary rocks formed?
Name the rocks which are most widespread on the earth.
State the types of rocks for the formation of which the following process is involved.
Accumulation takes place over long periods of time in seas, lakes and streams.
What is meant by the term ‘metamorphism’?
Give one term for the following statement:
Igneous rocks of deep seated origin.
Give one term for the following statement:
Rounded or sub-rounded fragments, usually water-born cobbles, pebble and gravel, cemented together by a matrix of calcium carbonate, silica, etc.
Give one term for the following statement:
Formed by evaporation in saline lakes.
______ is the kind of metamorphic rock using which Taj Mahal was built.
How are igneous rocks formed?
Explain the type of Igneous Rocks.
______ are chemical substances which exist in nature.
The world Igneous is derived from the Latin word ______ meaning ______.
Why are crystalline rocks called so?
Match the following.
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
Match the following.
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
