|
A type of natural gas is named for this 5-letter rock, one of the most common types of sedimentary rock |
shale
|
$2,000 |
DJ |
FOSSIL FUELS |
2017-12-08 |
#7650 |
|
Crude oil can be extracted from this rock, the most abundant sedimentary rock in the Earth's crust |
shale
|
$800 |
DJ |
GEOLOGY |
2004-09-13 |
#4601 |
|
The most abundant sedimentary rock is this layered variety made of silt & clay |
shale
|
$600 |
DJ |
ROCKS & MINERALS |
1994-05-25 |
#2253 |
|
Slate is formed by the action of heat & pressure upon this sedimentary rock |
shale
|
$1,000 |
DJ |
ROCKS & MINERALS |
1990-12-05 |
#1443 |
|
The largest known reserves of this oil-producing rock are found in the Piceance Creek Basin in Colorado |
shale
|
$400 |
DJ |
ROCKS & MINERALS |
1990-04-05 |
#1299 |