GeologyHub

The Missing Giants; The Collapsed 16,000 Ft Peaks in the Lower 48

2K views · today · 5:29

Less than 10,000 years ago, there was a 16,000 foot high peak in the lower 48 of the United States. Yet today, the tallest peak is less than 15,000 feet high in the same area. So, what happened? The answer is that there were multiple instances in the last 10,000 years and even more in the last 1 million years where different or the same peaks were notably higher than they are today. This is the story of the "missing" giants.

Topics: Arizona's 16000 Ft Peak · Current Highest Peaks · San Francisco Mountain · Mt. Rainier · Mt. Mazama · Ancient Haleakala

📄 Mentioned papers: wet · Eruptions of Mount St. Helens : Past, present, and future

The Profane-Sounding & "Interesting" Mineral Names; Geologist Analysis

18K views · 2d ago · 3:54

Cummingtonite, analcime, dickite. These are all 100% real mineral names, and they are not the only "interesting" names of mineral compounds. Today's video discusses multiple examples of such, and explains how each of these were given their name.

Topics: Interesting Mineral Names · Cummingtonite · Analcime · Dickite · Bussyite · Bicchulite & Fukalite

📰 Mentioned news: Analcime

This Week in Volcano News; Iwo Jima & Bromo Produce New Eruptions

39K views · 3d ago · 5:25

This week, Japan's famous Iwo Jima volcano produced a new explosive eruption. This formed a brand new island off of its southern coastline, along with ejecting volumes of pumice. Meanwhile, in Indonesia, the Bromo volcano erupted for its first time in 3 years. And, also in Indonesia, the Gamkonora volcano had its alert level raised due to increased seismic activity. Today's video discusses these stories and lists the 51 actively erupting volcanoes at the present.

Topics: Yasur Eruption · This Week's Top Stories · Iwo Jima Eruption · Bromo Eruption · Gamkonora Update · List of Erupting Volcanoes

📄 Mentioned papers: CC BY 4.0

The Volcanic Monster We Couldn't Find...Until Now

113K views · 5d ago · 5:08

The source of one of the largest volcanic eruptions during the last 200 years had long remained a mystery, despite the fact it triggered multiple deadly famines and lowered worldwide temperatures. That was, until now. A team of scientists has just discovered the source of the highly explosive 1831 CE mystery eruption, at an understudied remote volcano. This video will discuss these findings, and what we still do not know about the volcano in question.

Topics: Mystery Eruption · Zavaritsky Caldera · 1831 Eruption Size · Sulfur Dioxide · Blocking Sunlight · Middle Caldera

📄 Mentioned papers: 2025). CC BY 4.0 · CC BY 4.0 · 2017. CC BY 3.0 · 2022., CC BY 4.0. This derivative image is also licensed under CC BY 4.0

📰 Mentioned news: List of famines · Tenpō famine

Kilauea Volcano Update; 650 Ft Lava Fountains, Blue Lava May Have Erupted

101K views · 6d ago · 5:00

Yesterday, on November 5th 2026, Kilauea produced a sustained series of up to 656 foot or 200 meter high lava fountains. This eruptive episode had an unusually high lava effusion rate, and because this lava pooled up and ignited elemental sulfur deposits that had formed, it may have done something special.

Topics: 600+ Ft Lava Fountains · New Southwest Vent · Episode 56 Timeline · Episode 57 · Blue Lava? · A Hypothetical

▶️ Mentioned videos: Video on youtube.com

Earth's Oceans Once Had Twice as Much Water; Where did it Go?

73K views · 8d ago · 4:07

3.9 billion years ago, Earth's oceans contained twice as much water as they do today. This begs the question; where did all of that water go? The answer is somewhat surprising, and explained in this video made by a geologist.

Topics: Twice the Water · Not True Water · Phase Changes · Bridgmanite · A Water World

📄 Mentioned papers: CC BY 4.0

An Unusual Earthquake; Why The Strongest Shaking Was Far from the Epicenter

42K views · 9d ago · 4:35

On November 1st 2026, a magnitude 6.1 earthquake struck Japan, causing no damage. Yet, strangely, the strongest ground motion a particular spot felt was more than 300 miles away from the earthquake epicenter. Today's video discusses why this is the case, and has to do with the great depth the specified earthquake originated at.

Topics: M6.1 Japan Earthquake · Brief Overview · Geologic Setting · Subducting Slab · Phase Changes · 2 Possibilities

📄 Mentioned papers: CC BY 4.0 · CC BY 4.0

Damaging Glacial Outburst Flood Strikes Bhutan; Geologist Analysis

90K views · 11d ago · 4:46

A damaging glacial outburst flood recently struck the Himalayas, specifically in the nation of Bhutan. At least several structures were damaged, but thankfully this October 29th 2026 disaster caused no fatalities. Today's video discusses the extent of this outburst flood, and why it may have taken place through the opinion & analysis of a geologist.

Topics: Bhutan Outburst Flood · No Casualties · Moraines · Flood Cause · Rainfall Trigger?

This Week in Volcano News; French Island Magma Intrusion, Mayon Erupts

41K views · 12d ago · 5:03

This week, a magma intrusion occurred on the French island of Reunion, but it failed to reach the surface. Meanwhile, in the Philippines, the alert level was raised at the Mayon volcano after it produced a moderately sized explosive eruption. And, in the Northern Mariana Islands, it was discovered that the Ruby Seamount had erupted earlier this year.

Topics: White Island Erupts · This Week's Top Stories · Piton de la Fournaise Intrusion · Ruby Seamount · Mayon Eruption · List of Erupting Volcanoes

Nepal Landslide Update; You NEED to View the New Google Earth Imagery

170K views · 14d ago · 5:12

Google Earth recently posted new imagery post disaster of the August 26th 2026 Nepal landslide and flash flood, which may have caused more than 7,000 fatalities. I am encouraging everyone to look at this new imagery in hopes that it will inspire someone somewhere to prevent these scenes from happening elsewhere in the world in the future. Also, there are lessons and possible solutions to be learned from these new images.

Topics: Nepal Disaster · Flood Extent · Flood Heights · Upstream Flooding · Dam Reduced Flood Height · River Path Change

Iceland Volcano Update; Why Hasn't Another Eruption Occurred Yet?

48K views · 15d ago · 5:13

After erupting almost every month, it has now been more than a year since the Reykjanes volcano's last eruption. And yet, magma is not only still accumulating underneath it, but its volume has surpassed any prior eruption since it reactivated in 2020. So, why hasn't the Reykjanes volcano erupted again? Today's video discusses 1 possibility.

Topics: Reykjanes Volcano · Summation · Discussion

Recent M4.9 Australia Earthquake Caused by 500 Million Year Old Feature

41K views · 16d ago · 3:56

Yesterday, a M4.9 earthquake struck South Australia, and was felt by potentially millions of people including in Adelaide. While harmless as the October 27th 2026 earthquake caused no damage, its origin is quite interesting. It seems to have originated via a reactivated 500 million year old shear zone which is buried deep in the crust.

Topics: South Australia Earthquake · Strike-Slip Fault · Orogeny · Ancient Tectonics · George V Fracture Zone

The 10 Most Alien Landscapes on Earth; Geologist Analysis

26K views · 17d ago · 5:04

In science fiction films and tv, are you tired of every single alien planet looking suspiciously like Southern California? Well, I have the solution for you, with some alien like landscapes on Earth that would provide a far more fascinating setting than the usual vegetation local to California near film studios. I will mention the 10 most alien like landscapes on Earth in today's video.

Topics: Alien Landscapes · Dallol · White Sands National Park · Zhangjiajie Pillars · Devon Island · Tsingy Stone Forest

Krakatau Volcano Update; A 2nd Vent Now Appears to be Erupting

185K views · 18d ago · 5:01

During the last week, an unconfirmed report was made suggesting that a vent right below the surface northwest of Krakatau's main edifice was actively erupting, effusing a lava dome. As a result, the exclusion zone around that northwest vent was expanded from 1 to 2 kilometers in all directions. (Although the broader 5 kilometer exclusion zone around Anak Krakatau still covers all of this area).

Topics: A Change at Krakatau · Magma Dike? · Surtseyan Eruption Discussion · Future Island Shape?

▶️ Mentioned videos: Video on youtube.com · Video on youtube.com

📄 Mentioned papers: CC BY 4.0

An Unusual M6.9 Earthquake Struck Vanuatu; Small Tsunami Generated

46K views · 19d ago · 4:25

Earlier today, a M6.9 earthquake struck offshore of Vanuatu, leading to a small scale tsunami. This earthquake was the largest to occur in a highly unusual seismic sequence which has been ongoing since October 19th, occurring on a volcanic plateau with no prior record of seismic activity. Today's video will discuss the October 24th 2026 earthquake, why it occurred, and the region's overall geologic setting.

Topics: Vanuatu Earthquake & Tsunami · Unusual Earthquakes · Tectonic Stress · Foreshocks & Aftershocks

▶️ Mentioned videos: Video on youtube.com

Major M7.0 Earthquake Strikes China; Geologist Analysis

53K views · 21d ago · 4:11

Yesterday, a major M7.0 earthquake struck a part of China, destroying or damaging at least several hundred structures. Yet, a close look at the seismic event which caused it revealed something peculiar; the fact that it did not originate directly from the tectonic compression actively building the Himalayas. Instead, the October 22nd 2026 earthquake occurred as a secondary effect of this compression via extension.

Topics: China Earthquake · Damage Estimates · Himalayas Formation · Largely Normal Fault · Squeezing Motion

▶️ Mentioned videos: Video on youtube.com

Brought to the Surface, These Deep Ocean Rocks Spontaneously Ignited

98K views · 22d ago · 4:30

Multiple mineral samples, taken from more than 10,000 feet below the ocean surface spontaneously ignited without an external heat source upon being processed on the surface. But, why did this happen? Why did this sulfide mineralization from an underwater sulfide deposit ignite? Today's video will discuss this fascinating phenomenon.

Topics: Spontaneous Combustion · Mid Ocean Ridge · Crystal Needles · Chemical Reaction · Escanaba Trough Details

📄 Mentioned papers: CC BY 4.0

Two Large Earthquakes Struck the Center of the Atlantic Ocean; Geologist Analysis

106K views · 24d ago · 4:11

Two strong earthquakes, a M6.8 & a M6.7 struck in the absolute middle of nowhere within the center of the Atlantic Ocean. Why? Well, they are a reminder of why the entire Atlantic Ocean exists in the first place! Today's video explains why through the opinion & analysis of a geologist.

Topics: M6.7 & M6.8 Earthquake · Why the Atlantic Ocean Formed · Mid Ocean Ridges · Transform Faults · High Earthquake Rate · Romanche Trench

A M9.9 Earthquake Didn't Strike, but a Still Large EQ Did

156K views · 26d ago · 4:26

On Friday, millions of people in Japan received an alert that a M9.9 earthquake had just struck. While this was thankfully given in error, the reason it happened is that a still large earthquake did strike Russia's Kamchatka peninsula at that time. Registering in as a magnitude 6.9 earthquake, it was an interesting intraslab seismic event which struck on October 16th, 2026.

Topics: M9.9 Alert, False Alarm · M6.9 Russia Earthquake · Aftershock of 2025? · Geologic Setting · Largest Possible EQ (Opinion) · The Only Way a M9.9 Could Strike

▶️ Mentioned videos: Video on youtube.com

📄 Mentioned papers: CC BY 4.0 · CC BY 4.0 · A numerical assessment of simple airblast models of impact...

Kilauea Volcano Update; 700+ Ft Lava Fountains Return, Geologist Analysis

85K views · 26d ago · 4:40

This morning, more than 700 foot high lava fountains erupted at Hawaii's Kilauea volcano, specifically in the southwest of its summit caldera. This occurred after a record setting 54 day long period of no lava fountaining (at least record setting since episodic activity began on December 23rd 2024). Today's video discusses this scenic eruption and why it might have happened.

Topics: Kilauea Erupts · Number of Vents · Other Recent Activity · Eruption Timeline · A Declining Trend

▶️ Mentioned videos: Thumbnail Photo Credit: Frame a U.S. Geological Survey livestream

Kilauea Volcano Update; Large Cracks Formed by a Shallow Magma Intrusion

49K views · 28d ago · 4:55

39 large cracks formed at Hawaii's Kilauea volcano due to a shallow intrusion of magma which occurred between September 30th 2026 and October 1st 2026. And yet, no magma reached the surface to cause a new eruption, despite getting fairly close. Today's video will show where these cracks are, and how the volcano's 2018 caldera collapse might serve as a weak point where a future hypothetical magma intrusion could occur.

Topics: Kilauea Magma Intrusion · Intrusion Location & Related Cracks · A Broken Cycle? · Prior Episodic Activity

Disaster in Nepal; Major Landslide Triggers Another Deadly Flash Flood

125K views · 1mo ago · 4:58

In Nepal, a flash flood up to 200 feet high was generated by another major landslide and partial collapse of a glacier. This landslide occurred high on a mountain, descended more than 3,000 feet, before transitioning into a deadly flash flood that swept away many buildings. And this was a different disaster than the far deadlier event of the same type which occurred on August 27th 2026.

Topics: Nepal Disaster · Landslide · Flood Heights · Landslide Dam?

Taal Volcano Erupts; Throws Lava Bombs, Generates Volcanic Lightning

148K views · 1mo ago · 4:48

On Thursday, the Taal volcano produced a spectacular explosive eruption that visibly ejected large lava bombs and generated volcanic lightning. While still only modest in the context of explosive eruptions at the world's volcanoes, this eruption was scientifically interesting. Today's video will highlight multiple aspects of the October 8th 2026 phreatomagmatic eruption.

Topics: Taal Erupts · Lava Bombs · Data Analysis · Eruption Patterns

Major M7.7 Earthquake Strikes Panama, Tsunami Generated; Geologist Analysis

146K views · 1mo ago · 5:32

A major M7.7 earthquake struck Panama yesterday, creating a tsunami, and collapsing many structures. This marked the largest earthquake to strike within the country in more than a century, but surprisingly, it did not occur on a tectonic plate boundary. Today's video will discuss why this earthquake occurred through the opinion & analysis of a geologist.

Topics: Panama Earthquake · Geologic Setting · Local Fault Lines · Damage Estimates · Venezuela EQ Comparison · Aftershocks

📄 Mentioned papers: 2020. CC BY 4.0

Vanuatu Earthquake Update; M6.3 Strikes, Geologist Analysis

53K views · 1mo ago · 3:45

Yesterday, a strong magnitude 6.3 earthquake struck Vanuatu, but this occurred in an unusual location. It did not originate on or near the subduction zone, but rather in an area that may one day become a new tectonic plate boundary. Today's video attempts to explain this October 8th 2026 earthquake, which occurred in the Vanuatu Back Arc Thrust Belt.

Topics: Vanuatu Earthquake · Compression · A Similar Location · Volcanoes

▶️ Mentioned videos: Video on youtube.com · Video on youtube.com

Hawaii's Famous Hōlei Sea Arch Has Collapsed; Geologist Analysis

57K views · 1mo ago · 4:29

Hawaii's famous Hōlei Sea Arch has sadly collapsed. This did not occur through human activity, but rather this volcanic pillar of basaltic rock collapsed due to long term wave erosion. Today's video will discuss why the arch collapsed, the changing shape of the Hawaiian Islands, and when precisely it originally formed.

Topics: Hawaii's Sea Arch Collapsed · 2025 Observations · Erosion · Kāne Nui o Hamo Link

Australia Earthquake Update; M4.8 Strikes Victoria, Geologist Analysis

86K views · 1mo ago · 4:15

On the morning of October 3rd, a magnitude 4.8 earthquake struck Victoria in Australia. While this caused no damage, its origin can strangely enough be traced back to Antarctica in a way. Today's video will discuss this October 3rd 2026 earthquake, show the likely fault which caused it, and note the aftershocks which have so far occurred.

Topics: Australia Earthquake · Antarctica & Rifting · Aftershocks · Australia Earthquake Rates

▶️ Mentioned videos: Video on youtube.com

This Week in Volcano News; Blue Lava Erupts at Papandayan, Gareloi Erupts

99K views · 1mo ago · 5:35

This week, blue lava erupted at an unexpected volcano in Indonesia; the Papandayan volcano. Meanwhile, in Alaska, the Gareloi volcano explosively erupted for its first time in 8 years. And, in Japan, the alert level was raised at the Hokkaido-Komagatake volcano. Today's video will discuss these volcano news stories via a geologist, and list the 47 volcanoes actively erupting around the planet.

Topics: Great Sitkin Eruption · This Week's Top Stories · Gareloi Erupts · Hokkaido-Komagatake · Papandayan Blue "Lava" · List of Erupting Volcanoes

Kilauea Volcano Update; New Magma Intrusion, New Area Closed Off

100K views · 1mo ago · 5:10

Something has changed at Kilauea. A new magma intrusion occurred on Wednesday & Thursday, seemingly sending some molten rock beneath Keanakāko‘i Crater. As a result, that crater and some additional locations close to it were closed off due to the theoretical potential for volcanic activity. Today's video will analyze this recent magma intrusion, but keep in mind that the actual specific depth and extent of the magma dike have not been publicly stated.

Topics: Kilauea Volcano Update · Magma Dike Analysis · Hypothetical Eruption · Most Likely Outcomes

▶️ Mentioned videos: Video on youtube.com

📄 Mentioned papers: doi:10.3133/pp18015

The Supervolcano in Arizona; Turkey Creek Caldera

75K views · 1mo ago · 6:05

Within Arizona is a massive but hidden near-supervolcano. Although it is long extinct, its eruptions were responsible for the creation of unusual geologic formations which are part of Chiricahua National Monument. The near-supervolcano I am referring to is called the Turkey Creek Caldera, which produced an eruption 385 times larger than the 1980 eruption of Mount Saint Helens more than 25 million years ago.

Topics: Strange Pillars · Chiricahua National Monument · Caldera Extent · Mid-Tertiary Ignimbrite Flare-up · Geologic Setting · Major Eruption

📄 Mentioned papers: doi:10.3133/i2544 · doi:10.3133/i2541

📰 Mentioned news: List of large-volume volcanic eruptions in the Basin and Range Province

Large Landslide Strikes Nepal, Temporarily Dams River; Geologist Analysis

192K views · 1mo ago · 5:01

On September 27th, a large landslide struck Nepal, with many millions of tons of rock falling by up to 1,100 feet into the Kali Gandaki River below. This dammed the river for a time, but thankfully this was only temporary, with water soon flowing through the dam in a non catastrophic manner. Today's video will analyze why this September 27th 2026 landslide occurred, and how it might relate to a more than 10,000 year old prior landslide.

Topics: Nepal Landslide · Expanding Landslide · Rock Units · Rotational Landslide

What are Rare Earth Elements? Geologist Analysis

19K views · 1mo ago · 1:56

Rare earth elements are an important economic resource which help power many high tech gadgets such as magnets in the modern world. But, what exactly are they, and why are they considered so rare? This video will answer this question, and give multiple examples of rare earth element rich minerals.

East Oregon's Youngest Volcanic Eruption; The Jordan Craters Lava Field

39K views · 1mo ago · 5:27

Within eastern Oregon is a 27 square mile field of fresh dark colored lava flows. These originated in a mildly explosive eruption approximately 3,200 years ago, marking the youngest volcanism to occur in the eastern half of the state. Comprising a series of more than a dozen vents, the eruption in question occurred from the Jordan Craters Volcanic Field, which today's video will show drone footage of.

This Week in Volcano News; Ambrym Erupts, New Sinabung Lava Dome

45K views · 1mo ago · 4:56

In Russia, a new explosive eruption occurred at the Chikurachki volcano, creating a plume of ash visible from satellite. Meanwhile, in Vanuatu, the Ambrym volcano's new eruption output lava within its Marum cone. And, in Indonesia, the Sinabung volcano started growing a presumably basaltic andesite lava dome. Today's video will discuss these stories through the opinion and analysis of a geologist and list the 47 world volcanoes that are actively erupting.

Topics: Santa Maria Eruption · This Week's Top Stories · Chikurachki Erupts · Ambrym Eruption Details · Sinabung Lava Dome · List of Erupting Volcanoes

▶️ Mentioned videos: Video on youtube.com

Krakatau Volcano Update; 2 New Vents Have Formed

70K views · 1mo ago · 6:02

Krakatau's major explosive eruption earlier this month did something quite unusual; it seemingly created two new vents which created brand new albeit temporary volcanic islands. And these new vents, which have resulted in an expanded exclusion zone at the volcano are somewhat interesting in terms of their location. Specifically, because they are vaguely close to the locations of two destroyed volcanic cones that existed before Krakatau's 1883 eruption.

Topics: Changes at Krakatau · New Exclusion Zone · 2 New Vents · The New SE Vent · A Very Small Tsunami · Landslide Scarp Discussion

📄 Mentioned papers: CC BY 4.0

The Active Volcano in Canada; The Spectrum Range

46K views · 1mo ago · 5:33

A 2,000 foot or 610 meter wide young explosion crater. A 5 kilometer long lava flow. And, a wide range of beautiful colors marking eroded lava domes. This is the story of one of the world's most unique and special volcanoes due to its beauty, being known as the Spectrum Range.

Topics: Giant Explosion Crater · Spectrum Range Volcano · Geologic Setting · Initial Shield Volcano · Caldera Formation · Monogenetic Vents

📄 Mentioned papers: 95 337:COTPLC 2.0.CO 2 · doi:10.1139/cjes-2025-0051 · doi:10.1139/cjes-2023-0065 · doi:10.4095/133497

This Took Giant Bites Out of El Hierro; Geologist Analysis

53K views · 1mo ago · 5:52

Something took giant bites out of Spain's island of El Hierro, leaving behind large c-shaped scarps in the landscape. This process has an interesting origin, which helps to explain the island's unusual three pronged shape. Today's video will discuss El Hierro's prehistoric massive landslides, and how they relate to volcanic rift zones.

Topics: El Hierro Island · Landslide Ages · A Hypothetical · Rift Zones · Landslide Cause

📄 Mentioned papers: doi:10.1080/17445647.2023.2214173 · Paper on agupubs.onlinelibrary.wiley.com · CC BY 4.0 · doi:10.1016/j.geomorph.2016.02.018

Canada's Most Active Volcano; Mount Edziza

86K views · 1mo ago · 8:51

The most active volcano in Canada has recently erupted 30 times. Its northern flank is covered by more than 100 square kilometers of young looking lava flows, and pristine vents dot its edifice. Located within a highly remote section of British Columbia, this fascinating volcano has a very long geologic history. Today's video will discuss Mount Edziza, and its fascinating geology.

Topics: Mount Edziza · Canadian Volcanoes · Edziza's Edifice · Geologic Setting · Geologic History · Subglacial Vents

📄 Mentioned papers: 95 337:COTPLC 2.0.CO 2 · 7 EGU22-8641, A. M. Sigurbergsdóttir & M. T. Gudmundsson · doi:10.1139/cjes-2025-0051 · doi:10.1139/cjes-2023-0065

This Week in Volcano News; 6 New Vents Erupt at Kilauea, Lokon Earthquakes

55K views · 1mo ago · 6:20

In Hawaii, 6 new vents (largely fissures) formed and erupted at Kilauea this week. Elsewhere, in Chile, the Nevados de Chillan volcano erupted anew, sending a plume of ash above its summit. And, in Indonesia, the Lokon volcano produced an increased rate of earthquakes over a several day timespan. Today's video will discuss these stories through the opinion and analysis of a geologist and list the 46 world volcanoes that are actively erupting.

Topics: Ambrym Eruption · This Week's Top Stories · Kilauea's New Vents · Nevados de Chillan Eruption · Lokon Earthquakes · List of Erupting Volcanoes

▶️ Mentioned videos: Video on youtube.com · Video on youtube.com

Pelee Volcano Update; Increased Ground Deformation, Geologist Analysis

59K views · 1mo ago · 5:58

Mount Pelee, yes the infamous Caribbean volcano, is currently producing an increased rate of ground deformation. In fact, this ground deformation in the overall year of 2026 seems to be occurring at its highest year by year rate since Pelee’s latest episode of volcanic unrest began in 2018. Today's video discusses what might be causing this episode of volcanic unrest.

Topics: Mount Pelee · Seismic Activity · Interpretation of Activity · Earthquake Analysis

Kilauea Volcano Update; 2 New Vents Erupt, Unusual Activity

67K views · 1mo ago · 5:28

Something strange and unusual is occurring at Kilauea. It should have in theory produced hours long tall lava fountains by now, yet, it hasn't. Almost as if the volcano is stalled close to such an eruptive episode. Today's video will discuss the Kilauea volcano's recent activity, and the fact that two new vents opened up north of its summit vent. Thankfully, all of this occurred completely within Kilauea's summit caldera.

Topics: Unusual Kilauea Activity · Summit Tiltmeter · New Vents · Decreasing Magma Supply

▶️ Mentioned videos: Thumbnail Photo Credit: Frame a video by U.S. Geological Survey, posted on YouTube

This Week in Volcano News; Tokachidake Alert Level Raised, Sirung Erupts

43K views · 1mo ago · 5:56

In Japan, the alert level was raised at the Tokachidake volcano, causing some evacuations. Meanwhile, a volcanic eruption in Indonesia went largely unnoticed. And, in the Azores, the alert level of the Furnas volcano was raised due to an earthquake swarm. Today's video will discuss these stories through the opinion and analysis of a geologist and list the 49 world volcanoes that are actively erupting.

Topics: Mayon Eruption · This Week's Top Stories · Tokachidake Unrest · Sirung Eruption · Furnas Volcano · List of Erupting Volcanoes

📰 Mentioned news: Tokachidake1

Azores Furnas Volcano Update; Alert Level Raised, Geologist Analysis

92K views · 2mo ago · 4:12

The alert level was just raised at Portugal's Furnas volcano in the Azores Island chain, which has not erupted in approximately 400 years. Yet, in my opinion, I am not concerned about this development. Today's video will explain why I interpret the volcano's recent earthquake swarm to be unimpressive, and unlikely to be part of a more significant episode of volcanic unrest.

Topics: Furnas Volcano · Azores Volcano Alert Levels · Prior 2026 Pico Swarm · Possible Lineament

📄 Mentioned papers: CC BY 4.0

The Asteroid Impact Which Triggered the Ice Age; Eltanin Crater

70K views · 2mo ago · 5:56

The trigger of the planet's most recent ice age may have been a massive impact event. Approximately 2.5 million years ago, a massive asteroid slammed into the ocean off the western coastline of Chile, forming a 35 kilometer or 22 mile wide crater. Its formation generated towering megatsunamis which would go on to impact the entire Pacific Ocean. If not for this ancient event, the ice age may have never happened.

Topics: Eltanin Impact · Iridium Concentrations · Mesosiderites · Impact Effects · Ice Age Trigger

📄 Mentioned papers: CC BY 4.0 · doi:10.1016/S0967-0645(01 · Paper on sciencedirect.com · doi:10.1016/j.epsl.2014.10.050

📰 Mentioned news: Eltanin impact · Meteorite fall statistics

These Rocks Aren't Tilted; Why Cross-Bedding Forms

35K views · 2mo ago · 2:33

The rocks you are looking at surprisingly are not tilted or slanted. They exist in an essentially flat rock unit dated to more than 100 million years ago. While this might sound strange, this represents a distinct sedimentary structure known as cross-bedding. Today's video will discuss this structure and how it forms, which is very common in the American southwest.

Topics: Cross-bedding · Formation Environments · How it Forms · Jurassic Desert

Strong Eruption Occurs at Ambae Volcano; 54,000 Ft Plume, Geologist Analysis

110K views · 2mo ago · 5:29

A strong explosive eruption of a world volcano, one of the strongest of 2026, largely went unnoticed. It occurred in Vanuatu at its Ambae shield volcano, specifically on August 25th and August 31st. Today's video provides footage courtesy of the ExtremePursuit YouTube channel taken in late June 2026, and analyzes what might have triggered these strong, but not initially strong as expected explosive eruptions.

Topics: Ambae Eruption · Eruption Plume Heights · 2026 Lava Flows · VEI Estimate · Exclusion Zone

▶️ Mentioned videos: used with permission · Video on youtube.com · Video on youtube.com

Krakatau Volcano Update; Watch a 5,000 Ft Lava Fountain, Geologist Analysis

445K views · 2mo ago · 5:22

The Krakatau volcano just produced its largest explosive eruption since 1883. Hundreds of airline flights were cancelled, and an eruption plume rose up to altitudes of 50,000 feet. And, during the main eruptive phase which has since ended, up to 5,000 foot high lava fountains were generated.

Topics: 5,000 Ft Lava Fountain · Satellite Imagery · Eruption Size Discussion · Eruption Size Comparison · Island Changes · An Eruption Effect

Major Explosive Eruption Occurs at Krakatau; Largest since 1883, Geologist Analysis

494K views · 2mo ago · 4:57

Krakatau, the infamous volcano, just produced its largest explosive eruption since 1883. And this caused the cancellation of hundreds of flights, generated a massive eruption plume, and caused ash to fall across a wide area. Yet, how large is this eruption, and why might it have occurred? Today's video will attempt to answer these questions through the knowledge & analysis of a geologist.

Topics: Major Krakatau Eruption · Eruption Size · Possible Effects · Eruption Cause

▶️ Mentioned videos: Video on youtube.com · Video on youtube.com · 1 INGVvulcani

📄 Mentioned papers: CC BY 4.0 · CC BY 4.0