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table of geochronology techniques
table of geochronology techniques
table of geochronology techniques
table of geochronology techniques

Table showing different types of geochronology techniques, the ages over which those techniques are best applied, and the meaning of the ages determined by the techniques.

Table showing different types of geochronology techniques, the ages over which those techniques are best applied, and the meaning of the ages determined by the techniques.

Plots showing the number of water samples collected over time (top) and by location (bottom) in the Yellowstone region since the late 1800s
Plots showing the number of water samples collected over time (top) and by location (bottom) in the Yellowstone region since the late 1800s
Plots showing the number of water samples collected over time (top) and by location (bottom) in the Yellowstone region since the late 1800s
Plots showing the number of water samples collected over time (top) and by location (bottom) in the Yellowstone region since the late 1800s

Plots showing the number of water samples collected over time (top) and by location (bottom) in the Yellowstone region since the late 1800s. Yellowstone’s archive of water-chemistry research data is a mosaic of scientific progress, built with the work of hundreds of people over more than a century and still growing today.

Plots showing the number of water samples collected over time (top) and by location (bottom) in the Yellowstone region since the late 1800s. Yellowstone’s archive of water-chemistry research data is a mosaic of scientific progress, built with the work of hundreds of people over more than a century and still growing today.

Text says Mount St. Helens, Land of Transformation
Mount St. Helens: Land of Transformation
Mount St. Helens: Land of Transformation
Mount St. Helens: Land of Transformation

Mount St. Helens: Land of Transformation video shows the changes to the landscape from before the May 18, 1980 eruption to today (2024).

Mount St. Helens: Land of Transformation video shows the changes to the landscape from before the May 18, 1980 eruption to today (2024).

Schematic of the Huckleberry Ridge Tuff magma storage configuration
Schematic of the Huckleberry Ridge Tuff magma storage configuration
Schematic of the Huckleberry Ridge Tuff magma storage configuration
Schematic of the Huckleberry Ridge Tuff magma storage configuration

Schematic of the Huckleberry Ridge Tuff magma storage configuration, consisting of discrete batches of magma. Analyzing the compositions of melt inclusions can help paint this type of big picture of the magmatic system. Figure modified from Myers et al. (2016).

Schematic of the Huckleberry Ridge Tuff magma storage configuration, consisting of discrete batches of magma. Analyzing the compositions of melt inclusions can help paint this type of big picture of the magmatic system. Figure modified from Myers et al. (2016).

Melt inclusions in a quartz crystal from the Huckleberry Ridge Tuff
Melt inclusions in a quartz crystal from the Huckleberry Ridge Tuff
Melt inclusions in a quartz crystal from the Huckleberry Ridge Tuff
Melt inclusions in a quartz crystal from the Huckleberry Ridge Tuff

Melt inclusions (<50 micrometers in diameter) in a quartz crystal from the Huckleberry Ridge Tuff, erupted 2.1 million years ago. Photomicrograph taken by Behnaz Hosseini at Montana State University.

Melt inclusions (<50 micrometers in diameter) in a quartz crystal from the Huckleberry Ridge Tuff, erupted 2.1 million years ago. Photomicrograph taken by Behnaz Hosseini at Montana State University.

Illustration of the crystal growth process that leads to melt inclusion entrapment
Illustration of the crystal growth process that leads to melt inclusion entrapment
Illustration of the crystal growth process that leads to melt inclusion entrapment
Illustration of the crystal growth process that leads to melt inclusion entrapment

Illustration of the crystal growth process that leads to melt inclusion entrapment. (a) A crystal (gray area) nucleates and grows. (b) As the magma cools, the crystal corners will grow more efficiently than crystal edges. (c) This growth process will lead to the entrapment of surrounding melt (orange area).

Illustration of the crystal growth process that leads to melt inclusion entrapment. (a) A crystal (gray area) nucleates and grows. (b) As the magma cools, the crystal corners will grow more efficiently than crystal edges. (c) This growth process will lead to the entrapment of surrounding melt (orange area).

Videos

Man smirks with "Volcanoes in Kansas?" on top of a U.S. map with volcanic eruption in the background. Kansas covered in ash? Yellowstone's aftermath (Yellowstone Volcano Update - March 2024)
Kansas covered in ash? Yellowstone's aftermath (Yellowstone Volcano Update - March 2024)
Kansas covered in ash? Yellowstone's aftermath (Yellowstone Volcano Update - March 2024)

Volcanic ash in Kansas? It's true there's thick deposits there, but where are the source volcanoes? Geologists began puzzling over this in the late 1800s when these deposits were first recognized. 

Volcanic ash in Kansas? It's true there's thick deposits there, but where are the source volcanoes? Geologists began puzzling over this in the late 1800s when these deposits were first recognized. 

Whisper or Roar? No more secrets Whisper or Roar? No More Secrets (Yellowstone Volcano Update - Feb 2024)
Whisper or Roar? No More Secrets (Yellowstone Volcano Update - Feb 2024)
Whisper or Roar? No More Secrets (Yellowstone Volcano Update - Feb 2024)

If a geyser erupts and no one is there to hear it, does it make a sound? Of course it does, and now we can hear it no matter when it happens thanks to a new monitoring station in Yellowstone National Park.

If a geyser erupts and no one is there to hear it, does it make a sound? Of course it does, and now we can hear it no matter when it happens thanks to a new monitoring station in Yellowstone National Park.

Steamboat. Losing Steam? Steamboat: Losing steam?
Steamboat: Losing steam?
Steamboat: Losing steam?

Steamboat Geyser is the tallest geyser in the world. It has been putting on a show the last few years for visitors at Yellowstone National Park with a record number of water eruptions, 48 eruptions each in 2019 and 2020. But it's only had eight eruptions in 2023. Is Steamboat losing steam? 

Steamboat Geyser is the tallest geyser in the world. It has been putting on a show the last few years for visitors at Yellowstone National Park with a record number of water eruptions, 48 eruptions each in 2019 and 2020. But it's only had eight eruptions in 2023. Is Steamboat losing steam? 

View of steep lava mountain with title text and description. Lava Onion? Lava flows - peeling back the layers (Yellowstone Volcano Update - November 2023)
Lava Onion? Lava flows - peeling back the layers (Yellowstone Volcano Update - November 2023)
Lava Onion? Lava flows - peeling back the layers (Yellowstone Volcano Update - November 2023)

Lava flows are one of the coolest (or maybe hottest!) features about volcanoes, but what would a lava flow look like if you could peel away the surface and take a peek underneath?

BIG EARTHQUAKE vs. BIG ERUPTION - Which is more likely at Yellowstone? Yellowstone Volcano Update — August 2023: MONUMENT TO A TRAGEDY. The origin of Hebgen Lake
Yellowstone Volcano Update — August 2023: MONUMENT TO A TRAGEDY. The origin of Hebgen Lake
Color photograph of caldera May 23, 2023 — Routine overflight of Kīlauea summit
May 23, 2023 — Routine overflight of Kīlauea summit
May 23, 2023 — Routine overflight of Kīlauea summit

A routine helicopter overflight provided aerial views of Halema‘uma‘u crater, at the summit of Kīlauea. The crater floor is covered by solidified lava erupted during the previous summit eruption, earlier this year. Inflation and seismic activity in the summit region indicate ongoing unrest. USGS video by M. Patrick.

A routine helicopter overflight provided aerial views of Halema‘uma‘u crater, at the summit of Kīlauea. The crater floor is covered by solidified lava erupted during the previous summit eruption, earlier this year. Inflation and seismic activity in the summit region indicate ongoing unrest. USGS video by M. Patrick.

Webcams

Webcam image view of volcano flank
[HLcam] Live Image of Mauna Loa's northwest flank from Hualālai volcano
[HLcam] Live Image of Mauna Loa's northwest flank from Hualālai volcano
[HLcam] Live Image of Mauna Loa's northwest flank from Hualālai volcano

Live view of the northwest flank of Mauna Loa; the view is from the southeast flank of Hualālai [HLcam]. This camera is a pan-tilt-zoom model and the view may change depending on activity.

Live view of the northwest flank of Mauna Loa; the view is from the southeast flank of Hualālai [HLcam]. This camera is a pan-tilt-zoom model and the view may change depending on activity.