Huckleberry Ridge Tuff

{{Short description|Tuff formation in Wyoming and Idaho}}

{{Infobox eruption

| name = Huckleberry Ridge eruption

| image = File:Welded tuff at Golden Gate in Yellowstone.JPG

| image_size =

| caption = The Huckleberry Ridge Tuff along the Gardner River near Osprey Falls, above Mammoth{{Cite web|title=Huckleberry Ridge Tuff|url=https://www.lpi.usra.edu/education/EPO/yellowstone2002/workshop/huckleberry/index.html|access-date=2021-12-04|website=www.lpi.usra.edu}}

| date = 2.1 million years ago

| volcano = Island Park Caldera

| type = Plinian eruption

| location = Idaho/Wyoming, United States

| coordinates = {{coord|44.33|N|111.33|W|type:mountain|display=inline,title}}

| volume = {{Convert|2,450|km3|mi3|abbr=on}}

| VEI = 8

| map = HuckleberryRidgeTuff.jpg

| map_size=

| map_caption = Huckleberry Ridge ash bed

| impact =

}}

The Huckleberry Ridge Tuff is a tuff formation created by the Huckleberry Ridge eruption that formed the Island Park Caldera that lies partially in Yellowstone National Park, Wyoming and stretches westward into Idaho into a region known as Island Park.Christiansen, R.L., 2001, The Quaternary and Pliocene Yellowstone Plateau Volcanic Field of Wyoming, Idaho, and Montana: U.S. Geological Survey Professional Paper 729-G, 145 p. This eruption of {{Convert|2,450|km3|mi3|abbr=on}} of material is thought to be one of the largest known eruptions in the Yellowstone hotspot's history. This eruption, 2.1 million years ago, is the third most recent large caldera-forming eruption from the Yellowstone hotspot. It was followed by the Mesa Falls Tuff and the Lava Creek Tuff eruptions.[http://vulcan.wr.usgs.gov/Volcanoes/Yellowstone/description_yellowstone.html Yellowstone Caldera, Wyoming]

The eruption likely occurred in 3 phases, separated by decades.{{Cite journal |last=Swallow |first=Elliot J |last2=Wilson |first2=Colin J N |last3=Charlier |first3=Bruce L A |last4=Gamble |first4=John A |date=2019-07-01 |title=The Huckleberry Ridge Tuff, Yellowstone: evacuation of multiple magmatic systems in a complex episodic eruption |url=https://academic.oup.com/petrology/article/60/7/1371/5524670 |journal=Journal of Petrology |language=en |volume=60 |issue=7 |pages=1371–1426 |doi=10.1093/petrology/egz034 |issn=0022-3530|doi-access=free |hdl=10468/8257 |hdl-access=free }}