# Boundstone (rock)

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A **boundstone** is a special type of [carbonate rock](/source/Carbonate_rock) in the [Dunham classification](/source/Dunham_classification).

## Description

In the original classification by Dunham (1962),[1] boundstones are defined as "carbonate rocks showing signs of being bound during deposition [...]. The signs of binding are specific and occur within the sample being classified".[2]

In the modified Dunham classification by Embry and Klovan (1971),[3] boundstones in the sense of Dunham are subdivided into [bafflestones](/source/Bafflestone), [bindstones](/source/Bindstone) and [framestones](/source/Framestone). The term "boundstone" is retained for authochthonous limestones in which the specific mode of organic binding cannot be recognized.[4]

Lokier and Al Nunaibi (2016)[5] define boundstone as "an autochthonous carbonate-dominated rock in which there is any form of evidence that the original components were organically bound at the time of deposition; however, the mode of binding is not identifiable."[6] In contrast to Embry and Klovan, they do not subdivide boundstones into smaller classes.

## References

1. **[^](#cite_ref-Dunham1962_1-0)** Dunham, Robert J. (1962). Ham, W.E. (ed.). "Classification of Carbonate Rocks according to Depositional Texture". *Classification of Carbonate Rocks, A Symposium*: 108–121.

1. **[^](#cite_ref-Dunham1962121_2-0)** Dunham, Robert J. (1962). Ham, W.E. (ed.). "Classification of Carbonate Rocks according to Depositional Texture". *Classification of Carbonate Rocks, A Symposium*: 121.

1. **[^](#cite_ref-EmbryKlovan1971_3-0)** Embry, Ashton F.; Klovan, J. Edward (1971-12-01). ["A late Devonian reef tract on northeastern Banks Island, N.W.T"](http://bcpg.geoscienceworld.org/content/19/4/730). *Bulletin of Canadian Petroleum Geology*. **19** (4): 730–781. [ISSN](/source/ISSN_(identifier)) [0007-4802](https://search.worldcat.org/issn/0007-4802).

1. **[^](#cite_ref-EmbryKlovan1971737_4-0)** Embry, Ashton F.; Klovan, J. Edward (1971-12-01). ["A late Devonian reef tract on northeastern Banks Island, N.W.T"](http://bcpg.geoscienceworld.org/content/19/4/730). *Bulletin of Canadian Petroleum Geology*. **19** (4): 737. [ISSN](/source/ISSN_(identifier)) [0007-4802](https://search.worldcat.org/issn/0007-4802).

1. **[^](#cite_ref-LokierAlJunaibi2016_5-0)** Lokier, Stephen W.; Al Junaibi, Mariam (2016). ["The petrographic description of carbonate facies: are we all speaking the same language?"](https://doi.org/10.1111%2Fsed.12293). *Sedimentology*. **63** (7): 1843–1885. [doi](/source/Doi_(identifier)):[10.1111/sed.12293](https://doi.org/10.1111%2Fsed.12293). [ISSN](/source/ISSN_(identifier)) [1365-3091](https://search.worldcat.org/issn/1365-3091).

1. **[^](#cite_ref-LokierAlJunaibi20161879_6-0)** Lokier, Stephen W.; Al Junaibi, Mariam (2016). ["The petrographic description of carbonate facies: are we all speaking the same language?"](https://doi.org/10.1111%2Fsed.12293). *Sedimentology*. **63** (7): 1879. [doi](/source/Doi_(identifier)):[10.1111/sed.12293](https://doi.org/10.1111%2Fsed.12293). [ISSN](/source/ISSN_(identifier)) [1365-3091](https://search.worldcat.org/issn/1365-3091).

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Adapted from the Wikipedia article [Boundstone (rock)](https://en.wikipedia.org/wiki/Boundstone_(rock)) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Boundstone_(rock)?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.