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

These desert-formed sandstones sit above an unconformity, and this suggests that after a long period with a humid climate, the climate became drier and wind became the dominant agent shaping the environment at Gale Crater.

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

Here are three graphical illustrations of the three types of unconformity.

From Textbooks • Jan. 1, 2017

An unconformity thus records movements of the crust and a consequent break in the deposition of the strata.

From The Elements of Geology by Norton, William Harmon