 |
|
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z |
|
|
sill
A tabular, parallel-sided sheet of igneous rock, formed underground, that is parallel to the layered rocks around it. Sills may be from under 1 cm to over 100 m thick and perhaps hundreds of kilometers wide.
Related category
• GEOLOGY AND PLANETARY SCIENCE
Also on this site:
Encyclopedia of Alternative Energy & Sustainable Living
Encyclopedia of History
Transport Concepts & Designs (partner site)