asphalt rock

American  

noun

Geology.

1. a rock formation, usually of limestone or sandstone, containing large amounts of bitumens.

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Example Sentences

Marti had brought a duplicate copy of the asphalt rock and offered riveting details of her capture.

From Literature

As she listened, a technician took apart the asphalt rock, placing each bit of spy gear and equipment on the table, one by one.

From Literature

The proportion of bitumen present in asphalt rock usually ranges from 7 to 20%, but it is found that rock containing more than 11% cannot be satisfactorily used for street pavements, and it is accordingly customary to mix the richer and poorer varieties in fine powder in such respective quantities that the proportion of bitumen present is from 9 to 10%.

From Project Gutenberg

A macadam road of asphalt rock was then made, which gave very good results, and finally, in 1854, a portion of the Rue Bergère was laid in Paris of compressed asphalt on a concrete foundation.

From Project Gutenberg

Collective State exhibits of oynx marble, paint earths, polished earths, sands, silicious earths, road materials, fluorspars, barite calcite, cement materials, salt, lithograph stone, lime, potash, marl, asphalt rock, etc., were also to be found in Kentucky's general mineral exhibit.

From Project Gutenberg