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
When sea-level fell, the land was exposed to erosion creating an unconformity.
From Textbooks ● Jan. 1, 2017
The English Bunter rests with a slight unconformity upon the older formations.
From Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary" by Various
There are three types of unconformities, nonconformity, disconformity, and angular unconformity.
From Textbooks ● Jan. 1, 2017
Disconformities are unconformities that occur between parallel layers of strata indicating either a period of no deposition or erosion.
From Textbooks ● Jan. 1, 2017
There are four types of unconformities, as summarized in Table 8.1, and illustrated in Figure 8.9.
From Textbooks ● Jan. 1, 2015
Gaps in the geological record are represented by various types of unconformities.
From Textbooks ● Jan. 1, 2015
How geological history may be read in unconformities is further illustrated in Figures 207 and 208.
From The Elements of Geology by William Harmon Norton
