unconformity

A boundary separating two or more rocks of markedly different ages, marking a gap in the geologic record.
Found on http://www.encyclo.co.uk/local/22291

Unconformity

An unconformity is a buried erosional or non-depositional surface separating two rock masses or strata of different ages, indicating that sediment deposition was not continuous. In general, the older layer was exposed to erosion for an interval of time before deposition of the younger, but the term is used to describe any break in the sedimentary ...
Found on http://en.wikipedia.org/wiki/Unconformity

Unconformity

• (n.) Want of parallelism between strata in contact. • (n.) Want of conformity; incongruity; inconsistency.
Found on http://thinkexist.com/dictionary/meaning/unconformity/

unconformity

1. Want of conformity; incongruity; inconsistency. ... 2. <geology> Want of parallelism between strata in contact. ... With some authors unconformity is equivalent to unconformability; but it is often used more broadly, for example, to include the case when the parallelism of strata once conformable has been disturbed by faulting and the like...
Found on http://www.encyclo.co.uk/local/20973

Unconformity

A break in the sequence of sedimentary strata. Often the unconformity surface is the result of erosion.
Found on http://www.physicalgeography.net/physgeoglos/u.html

Unconformity

A break in the stratigraphic record which represents a period of no sediment deposition. The interval of geologic time not represented is called a hiatus. There are three types of unconformities: disconformity, nonconformity, and angular unconformity.
Found on http://www.encyclo.co.uk/local/20206

unconformity

A buried erosion surface separating two rock masses.
Found on https://www.encyclo.co.uk/local/22327

Unconformity

A discontinuity in the succession of rocks, containing a gap in the geologic record. A buried erosion surface. See also angular unconformity, nonconformity.
Found on http://www.evcforum.net/WebPages/Glossary_Geology.html

Unconformity

A substantial break or gap in the geologic record where a rock unit is overlain by another that is not next in stratigraphic sucession, such as an interruption in continuity of a depositional sequence of sedimentary rocks or a break between eroded igneous rocks and younger sedimentary strata. It results from a change that caused deposition to cease...
Found on http://volcano.oregonstate.edu/glossary/1

Unconformity

A substantial break or gap in the geologic record where a rock unit is overlain by another that is not next in stratigraphic sucession, such as an interruption in continuity of a depositional sequence of sedimentary rocks or a break between eroded igneous rocks and younger sedimentary strata. It results from a change that caused deposition to cease...
Found on http://www.encyclo.co.uk/local/21455

unconformity

A surface of erosion or nondeposition that separates younger strata from older strata; most unconformites indicate intervals of time when former areas of the sea bottom were temporarily raised above sea level.
Found on http://www.encyclo.co.uk/local/22047

Unconformity

A surface that represents a break in the geologic record, with the rock unit immediately above it being considerably younger than the rock beneath. There are three major aspects to consider (1) Time. An unconformity develops during a period of time in which no sediment is deposited. This concept equates deposition and time, and an unconformity repr...
Found on https://www.encyclo.co.uk/local/20127

Unconformity

A surface that separates two strata. It represents an interval of time in which deposition stopped,
Found on http://www.encyclo.co.uk/local/22392

unconformity

Any interruption of the continuity of a depositional sequence.
Found on http://www.scientificpsychic.com/etc/geology-glossary.html

unconformity

Any interruption of the continuity of a depositional sequence.
Found on http://www.ucmp.berkeley.edu/glossary/gloss2geol.html

unconformity

Any interruption of the continuity of a depositional sequence.
Found on http://www.ucmp.berkeley.edu/glossary/glossary_2.html

Unconformity

In geology, unconformity describes a want of parallelism between strata in contact. With some authors unconformity is equivalent to unconformability; but it is often used more broadly, for example, to include the case when the parallelism of strata once conformable has been disturbed by faulting and the like.
Found on http://www.probertencyclopaedia.com/browse/HU.HTM

Unconformity

Surface between sedimentary strata representing a time gap between periods of deposition
Found on https://www.encyclo.co.uk/local/20501

unconformity

Surface of erosion or nondeposition eventually overlain by younger sedimentary rock strata and preserved in the geologic record. A surface where the beds above and below lie at different angles is called an angular unconformity. The boundary between older igneous or metamorphic rocks that are truncated by erosion and later covered by younger sedime...
Found on http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0007802.html
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