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
This is a type of unconformity called a disconformity, where either non-deposition or erosion took place.
From Textbooks • Jan. 1, 2017
An unconformity between two marine formations records the fact that between the periods when they were deposited in the sea the area emerged as land and suffered erosion.
From The Elements of Geology by Norton, William Harmon
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.