Rocksday

Metaconglomerate

Conglomerate squeezed by metamorphism until its pebbles stretched and flattened.

Metaconglomerate specimen
Photo: Wilson44691, Public domain, via Wikimedia Commons

How to identify metaconglomerate

  • Elongated, flattened pebbles all pointing the same way.
  • Hard; breaks through pebbles.
  • Pebbles often quartzite.

Often confused with

Where it's found

  • Rhode Island
  • Norway
  • Ontario, Canada

Uses

Decorative stone.

Rock tumbling

Can be tumbled with care.

Did you know?

In Rhode Island's Purgatory Conglomerate, pebbles were stretched to several times their length.

Think you could spot it from a blurry close-up?

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