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flowstone

American  
[floh-stohn] / ˈfloʊˌstoʊn /

noun

Petrology.
  1. a layered deposit of calcium carbonate, CaCO 3 , left by thin sheets of flowing water, as in a cave.


Etymology

Origin of flowstone

1920–25, Amer.; flow + stone

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The researchers, including experts from Johannesburg and France, examined radioactive decay in rocks buried at the same time as the fossils, whereas earlier estimates were based on calcite flowstone deposits.

From Washington Post • Jun. 29, 2022

She also had flowstone and a rare kind of red obsidian, which originated outside of the UK.

From BBC • May 21, 2022

They measured the radioactive decay of uranium into thorium in that flowstone to date it to 142,000 years ago.

From Science Magazine • Sep. 21, 2021

That flowstone turned out to be about 115,000 years old.

From New York Times • Feb. 22, 2018

Their light playing over the wet flowstone walls.

From "The Road" by Cormac McCarthy

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