unconformable

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unconformable

[¦ən·kən′fȯr·mə·bəl]
(geology)
Pertaining to strata that do not conform in position, dip, or strike to the older underlying rocks.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
1, 7) - Here, the Genna Selole Fm rests unconformably on the siliciclastic Middle Triassic Escalaplano Fm (Costamagna et al., 2000).
The Pennsylvanian Sharon sandstone is the basal informal unit of the Pottsville Group in Ohio, where it unconformably overlies Mississippian strata (Ohio Division of Geological Survey, 1990 [rev.
RESULTS--Quaternary deposits are situated unconformably above the Lower Triassic (Olenekian) Shnabkaib Member of the Moenkopi Formation.
Someah e Pain placed on FajanFormation unconformably and covered by Karaj Formation gradually.
It is unconformably overlain by the Waitemata and correlative groups of Upper Oligocene-Lower Miocene age.
In areas where the Tobra Formation unconformably overlies the Jutana the contact is strictly marked with a change from sandy dolomite to conglomerate.
Triassic and younger Mesozoic rocks lie unconformably on Carboniferous and older sediments.
The La Meseta Formation rests unconformably on either the Late Cretaceous Lopez de Bertodano Formation or on the Paleocene Sobral and Cross Valley formations (Sadler 1988; Marenssi et al.
The Dammam Formation (Middle to Upper Eocene) unconformably overlies the Rus Formation (Hamdan and Bahr, 1992).
It lies unconformably on early phases of the complex, and is intruded by later phases, within which it occurs as roof pendants.
The Woodbine Formation overlies the Grayson Marl of the Washita Group and is unconformably overlain by the Eagle Ford Group (Dodge 1952, Oliver 1971).