unconformity

Example Sentences

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It echoes James Playfair’s description of the “abyss of time” he glimpsed while viewing a strata unconformity at Siccar Point in 1788, when geology was first emerging as a science.

From The Guardian • Apr. 20, 2019

This unconformity represents a time where erosive processes took over after millions of years when the lake had finally dried up - to form a new land surface.

From BBC • Mar. 22, 2018

She’s revising a manuscript describing an unconformity in the sedimentary layers of Mount Sharp, within the Gale crater, a record of the alternating wet-dry cycles on the planet.

From Science Magazine • Jun. 29, 2017

Later, horizontal strata were deposited on top of the tilted strata creating an angular unconformity.

From Textbooks • Jan. 1, 2017

With few exceptions the Carboniferous strata rest on those of the Devonian without any marked unconformity; the one period passed quietly into the other, with no great physical disturbances.

From The Elements of Geology by Norton, William Harmon