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What are the similarities between mechanical weathering and chemical weathering?

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September 29, 2010 8:24PM

Both mechanical weathering (physically breaking rock into smaller pieces) and chemical weathering (chemically changing and even dissolving rock) result in rock layers being broken down. Water can be involved in both - freezing and then thawing lead to mechanical breaking by cracking rock, dissolving can lead to leaching chemical components of the rock, possibly weakening it and leading to pitting of the surface, for example.

Also they both can break down some rocks faster than other rocks.