A disconformity is an unconformity between parallel layers of sedimentary rocks which represents a period of erosion or non-deposition.
Unconformity. 508 pages on this wiki. An angular unconformity is an unconformity where horizontally parallel strata of sedimentary rock are deposited on tilted and eroded layers, producing an angular discordance with the overlying horizontal layers. The whole sequence may later be deformed and tilted by further orogenic activity. Types of Unconformities. The type of unconformity (in other words, what we call it) is based upon what rock types are involved; whether it is the result of erosion or no deposition; and whether older sedimentary rock layers were tilted prior to being eroded. Unconformity is the general term for missing pages of Earth history. There are three types of unconformities (below): angular unconformity, nonconformity, and disconformity. An angular unconformity (left) is an erosional surface separating steeply dipping rock layers below from gently dipping layers above.  Disconformity Edit. A disconformity is an unconformity between parallel layers of sedimentary rocks which represents a period of erosion or non-deposition. Disconformities are marked by features of subaerial erosion. This type of erosion can leave channels and paleosols in the rock record. 508 pages on this wiki. An angular unconformity is an unconformity where horizontally parallel strata of sedimentary rock are deposited on tilted and eroded layers, producing an angular discordance with the overlying horizontal layers. The whole sequence may later be deformed and tilted by further orogenic activity. 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. A disconformity is an unconformity between parallel layers of sedimentary rocks which represents a period of erosion or non-deposition. Disconformities are marked by features of subaerial erosion. This type of erosion can leave channels and paleosols in the rock record Definition. An unconformity is the contact between sedimentary rocks that are significantly different in age, or between sedimentary rocks and older, eroded igneous or metamorphic rocks. Unconformities represent gaps in the geologic record; periods of time that are not represented by any rocks. The type of unconformity (in other words, what we call it) is based upon what rock types are involved; whether it is the result of erosion or no deposition; and whether older sedimentary rock layers were tilted prior to being eroded. A disconformity is an unconformity between parallel layers of sedimentary rocks which represents a period of erosion or non-deposition. Disconformities are marked by features of subaerial erosion. 508 pages on this wiki. An angular unconformity is an unconformity where horizontally parallel strata of sedimentary rock are deposited on tilted and eroded layers, producing an angular discordance with the overlying horizontal layers. The whole sequence may later be deformed and tilted by further orogenic activity. For geologists, one of the most famous angular unconformity is the Grand Unconformity in the Grand Canyon of Arizona. Here tilted sedimentary rocks of Precambrian age (lower half of photo) are overlain by younger sedimentary rocks of Phanerozoic age (Cambrian and younger, upper half of photo). Nonconformities are unconformities that separate igneous or metamorphic rocks from overlying sedimentary rocks. They usually indicate that a long period of erosion occurred prior to deposition of the sediments (several km of erosion necessary). An unconformity is a gap in the sedimentary rock record. This animation shows the formation of an angular unconformityone where the layers above and below the unconformity are not parallel to each other, but form an angle. Examine how the final result allows you to infer the sequence of the rocks' formation.
http://geology.wikia.com/wiki/Unconformity http://study.com/academy/lesson/unconformities-in-geology-definition-types-quiz.html http://coloradogeologicalsurvey.org/colorado-geology/structures/unconformities/ http://geology.wikia.com/wiki/Unconformity https://en.wikipedia.org/wiki/Unconformity http://study.com/academy/lesson/unconformities-in-geology-definition-types-quiz.html http://geology.wikia.com/wiki/Unconformity http://www.indiana.edu/~geol105b/images/gaia_chapter_6/unconformities.htm http://www.classzone.com/books/earth_science/terc/content/visualizations/es2902/es2902page01.cfm
what is an unconformity rock