Answer: SHALE

Possible questions:


Oil source we know 22 Answers
Kind of rock we know 12 Answers
Type of oil we know 10 Answers
Kind of oil we know 12 Answers
Fissile rock we know 1 Answer
Layered rock we know 2 Answers
Oil-bearing rock we know 1 Answer
Sedimentary rock we know 2 Answers
Easily split rock we know 2 Answers
___ oil we know 6 Answers
Laminated rock we know 3 Answers
Fine-grained rock we know 4 Answers
Petroleum source we know 1 Answer
Type of rock we know 4 Answers
An oil source we know 2 Answers
One source of oil we know 4 Answers
Oil-yielding rock we know 1 Answer
Source of oil we know 2 Answers
Possible source of petroleum we know 1 Answer
Fuel-yielding rock we know 1 Answer
Fossil-yielding rock we know 1 Answer
Compressed clay we know 1 Answer
A source of oil we know 2 Answers
Thin-layered rock we know 1 Answer
Synfuel source we know 1 Answer
Stratified rock we know 1 Answer
Shelf material we know 2 Answers
Rock that splits easily we know 1 Answer
Rock made from layered mud we know 1 Answer
Product of mud compaction we know 1 Answer
Oil-producing rock we know 1 Answer
Not exactly hard rock? we know 1 Answer
Mud, after centuries we know 1 Answer
Fossil source we know 2 Answers
Clayey rock we know 1 Answer
Thin layered rock we know 1 Answer
Source of kerosene we know 1 Answer
Slate, originally we know 1 Answer
Slate source we know 1 Answer
Rock used in fracking we know 1 Answer
Rock used for flagstones we know 1 Answer
Rock that splits into bits we know 1 Answer
Rock that may yield oil we know 1 Answer
Rock that may hold fossils we know 1 Answer
Rock often containing quartz we know 1 Answer
River-delta material we know 1 Answer
Potential oil source we know 1 Answer
Oily stone we know 1 Answer
Oil-rich mineral we know 1 Answer
Oil yielder we know 1 Answer
Oil rock we know 1 Answer
Mudstone, e.g. we know 1 Answer
Mudstone we know 1 Answer
Most common sedimentary rock we know 1 Answer
Layered fissile rock we know 1 Answer
Kerosene source we know 1 Answer
Fragile layered rock we know 1 Answer
Fracking target we know 1 Answer
Fracking rock we know 1 Answer
Fossil medium we know 1 Answer
Fossil holder we know 1 Answer
Emergency oil source we know 1 Answer
Compressed clays we know 1 Answer
Cleavable rock we know 1 Answer
Clay product we know 1 Answer
Brick ingredient we know 1 Answer
Argillaceous rock we know 1 Answer

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