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Product of mud compaction WSJ Crossword Clue

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Frequently Asked Questions About This Clue

The most common and recent 5-letter answer for "Product of mud compaction" is SHALE.
The clue refers to a type of sedimentary rock formed from the compaction of mud and clay over time. 'Product of mud compaction' directly describes the geological process that creates shale.
This clue was last seen in the WSJ Crossword on September 26, 2026.
Shale is a fine-grained sedimentary rock formed from compacted mud and clay.
Rock that's fracked to release oil, Mud product, Cement ingredient, Rock that easily fractures, Layered rock

The clue “Product of mud compaction” is a classic crossword staple, frequently appearing in puzzles like the WSJ crossword. For the puzzle dated September 26 2026, the definitive 5-letter answer is: SHALE.

Expert Tip: When you’re stuck, try to analyze the structure of the clue itself. Is it a direct definition, a pun, a fill-in-the-blank, or a pop culture reference? Identifying the type of clue you’re dealing with is a key skill for improving your solving speed.