# Dripping Spring Quartzite

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The [Mesoproterozoic](/source/Mesoproterozoic) **Dripping Spring Quartzite** is a resistant, purple [quartzite](/source/Quartzite) formation found in central and southeast [Arizona](/source/Arizona), [USA](/source/Southwestern_United_States). It is a [cliff-forming](/source/Cliff-former) purplish unit found in the lower sections of the [Apache Group](/source/Apache_Group_(geology)), units of originally sedimentary layers, but later metamorphosed. The Apache Group is [coeval](/source/Coeval) with a similar aged Proterozoic sequence of eight geologic units found in the lowest geologic sequences of the [Grand Canyon](/source/Grand_Canyon), the [Grand Canyon Supergroup](/source/Grand_Canyon_Supergroup).

The Apache Group, or some underlying [Vishnu Basement Rocks](/source/Vishnu_Basement_Rocks) (Ruin Granite), are prominently found in all of the [Sierra Ancha](/source/Sierra_Ancha) range, the range being separated by faults from its neighboring [Mazatzal Mountains](/source/Mazatzal_Mountains) west, and the [Salt River](/source/Salt_River_(Arizona)) to the south. The Apache Group extends to regions east of the Sierra Ancha, and also regionally to [Globe](/source/Globe,_Arizona) just south-southeast, and the neighboring [Dripping Spring Mountains](/source/Dripping_Spring_Mountains), again just south of the Globe region.

The Apache Group in descending order from youngest to oldest geologic units:

- - D-[Troy Quartzite](/source/Troy_Quartzite) - C-[Mescal Limestone](/source/Mescal_Limestone) - B-Dripping Spring Quartzite - Barnes Conglomerate (Globe, Arizona region, lowest of Dripping Spring Q.) - A-[Pioneer Shale](/source/Pioneer_Shale) - [Scanlon Conglomerate](/source/Scanlon_Conglomerate) (lowest of Pioneer Shale)

## References

1. Lucchitta, 2001. *Hiking Arizona's Geology*, Hike 18, ***Aztec Peak Trail***, Fig. 19, *Formations of the Apache Group of Proterozoic age*, p. 147.

- Lucchitta, 2001. *Hiking Arizona's Geology,* Ivo Lucchitta, c 2001, Mountaineers's Books, Hike 18, *Aztec Peak Trail*-(Sierra Ancha), pp. 145–149 and *Jug Trail to Jerome Creek*-(Sierra Ancha), pp. 170–174 (softcover, ISBN 0-89886-730-4)

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