penecontemporaneous

[pee-nee-kuhn-tem-puh-rey-nee-uhs]

adjective Geology.

formed during or shortly after the formation of the containing rock stratum: penecontemporaneous minerals.

Origin:
1900–05; pene- + contemporaneous

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Penecontemporaneous is always a great word to know.

So is crust. Does it mean:

portion of the earth's surface consisting of disintegrated rock and humus

outer layer of the earth, about 22 miles deep under the continents and 6 miles deep under the oceans

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pe·ne·con·tem·po·ra·ne·ous