• ES Picture of the Day 01 2022

    From Black Panther@21:1/186 to All on Sat Jan 1 11:01:04 2022
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Archive - Fireworks, Moonlight and Streaking Stars

    December 31, 2021

    6a0105371bb32c970b01bb07d35f34970d

    Happy New Year! Every weekend we present a notable item from our
    archives.

    This EPOD was originally published January 11, 2015.

    Photographer: Miguel Claro

    Summary Author: Miguel Claro
    Shown above is a 360 degree, all sky, long exposure view of the
    area around Almada, Portugal, captured from the top of a high-rise
    building late on New Year's Eve 2014 and early on New Year's Day
    2015. Fireworks celebrating the arrival of the New Year can be seen
    erupting from various locations around the horizon, including
    Lisbon (at bottom between the 6:00 and 7:00 position) and
    Sexial (at right at the 3:30 position). The waxing gibbous Moon
    is the elongated white blob at left center. Above the Moon, at
    center, are the stars of Orion. Jupiter is the bright streak at
    far right, near the TV antenna.

    Photo details: Canon 6D camera; f/6.3; ISO 800; 10 second exposure;
    8mm; Canon L circular fisheye lens. Taken on December 31, 2014 and
    January 1, 2015 between 22:42 and 00:10 -- a sum of 474 images with a
    total time integration of 1 hour and 20 minutes.

    * Almada, Portugal Coordinates: 38.6803, -9.1583

    Related EPODs

    Archive - Fireworks, Moonlight and Streaking Stars Crescent
    Moon Over Zsámbék, Hungary Meteor Panorama and Zodiacal Light From
    Greece Earthshine and Starry Sky Full Moon illuminates
    Marmolada and Glacier Northern Lights over the Norwegian Sea
    More...

    Night Sky Links

    * Space Weather Live
    * Space Weather Live Forum
    * About the Moon
    * American Meteor Society
    * Arbeitskreises Meteore e.V.
    * Global City Lights
    * Heavens Above Home Page
    * The International Meteor Organization
    * Lunar and Planetary Institute
    * MoonConnection
    * NASA Eclipse Web Page
    * Understanding The Moon Phases

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

    --- up 3 weeks, 6 days, 20 hours, 43 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Tue Feb 1 11:01:08 2022
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Earth Pyramids In South Tyrol, Italy

    February 01, 2022

    Piramidi_di_terra

    Photographer: Salvatore Cerruto

    Summary Author: Salvatore Cerruto

    The earth pyramids (Erdpyramiden in German) are a fairly common
    natural monument in the province of South Tyrol, Italy. These
    geologic landforms are unique creations made by the erosion of
    loose deposits of glacial origin, characterized by a certain degree
    of consolidation. These deposits are distinguished by the presence
    of gravel and large boulders abundantly immersed in fine silty
    sediments. The severe erosion creating these pyramids is caused by
    surface water runoff gradually forming deeper furrows separated
    from each other by sharp ridges. Where large rocks exist in the
    landscape, the erosion is significantly slowed and causes the spires to
    be isolated with a boulder on top acting as a protective cap. Over
    time, the erosional force of the surface runoff leads to a progressive
    thinning of the column, which eventually will topple the structure.
    Photo details: Nikon D800 + Samyang 14mm @f/18, ISO 320, 1/40 sec
    * South Tyrol, Italy Coordinates: 46.8049519,12.0194615

    Related EPODs

    Earth Pyramids In South Tyrol, Italy Archive - Owens Valley
    Ash Clouds Over La Palma, Canary Islands Archive - Panamint
    Delta Bearpaw Formation in Montana Archive - Armorican
    Quartzite
    More...

    Geology Links

    * Earthquakes
    * Geologic Time
    * Geomagnetism
    * General Dictionary of Geology
    * Mineral and Locality Database
    * Mohs Scale of Mineral Hardness
    * This Dynamic Earth
    * USGS
    * MyShake - University of California, Berkeley
    * USGS Ask a Geologist
    * USGS/NPS Geologic Glossary
    * USGS Volcano Hazards Program

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

    --- up 8 weeks, 2 days, 20 hours, 43 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Tue Mar 1 11:00:32 2022
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Iridescent Pileus Cloud Over Barra Grande, Brazil

    March 01, 2022

    20211205172648

    Photographer: Christine Albuquerque

    Summary Author: Christine Albuquerque

    On the evening of December 5th, 2021, I observed this colorful
    iridescence formed on a pileus cloud while walking by the beaches
    of Barra Grande near Cajueiro da Praia, Brazil. This colorful cloud
    was annex to a huge cumulus cloud. I was quite amazed by the vivid
    and spectacular colors of this phenomenon, which were further enhanced
    by the picturesque setting of Barra Grande. As the time passed, the
    pileus cloud showed intricate twisted patterns that added a special
    beauty to that evening sight and resembled large moving veils in the
    sky.

    In addition to the iridescence, something else caught my attention on
    the scene. Perhaps victim of a pareidolia event caused by such an
    amazing view, the cumulus cloud resembled to me a dog that was wearing
    a colored hat and staring at something far away out of the field of
    view. The pileus clouds, when favorably positioned relative to the
    Sun, can yield iridescences of incredible beauty and show an
    eye-catching view that we will never forget.

    Photo details: Canon SX60 HS, f/8, 1/400 second exposure, ISO-160
    * Barra Grande, Cajueiro da Praia, Brazil Coordinates: -2.910470,
    -41.420123

    Related EPODs

    Iridescent Pileus Cloud Over Barra Grande, Brazil Summer
    Convection Rain Shaft Thermal Inversion from the Biellese Prealps
    Lenticular Clouds Over Rocky Mountain National Park Mountain
    Shadow Projected onto Clouds Crepuscular Ray and Venus
    More...

    Cloud Links

    * Atmospheric Optics
    * The Cloud Appreciation Society
    * Cloud Atlas
    * Color and Light in Nature

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

    --- up 1 day, 20 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Fri Apr 1 12:00:54 2022
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Winter Rainbow Observed Over Southern Slovakia

    April 01, 2022

    R. Barsa - Winter rainbow

    Photographer: Robert Barsa

    Summary Authors: Robert Barsa; Cadan Cummings

    This photo of a winter rainbow was taken on January 1, 2022, in
    southern Slovakia. The weather was abnormally warm over New Year’s,
    which caused the snow in the region to partially melt. Clouds to
    the east were producing light rain just before sunset. As a result
    of the water droplets suspended in the air from the rain and melting
    snow, a winter rainbow appeared over the nearby hills opposite the
    setting Sun.

    Although bows are visible throughout the year, liquid water droplet
    must be present in the air because snowflakes cannot produce the
    reflection required to produce the colorful phenomenon. In addition to
    the rainbow, Krásna Hôrka Castle is also visible in the left side
    of the photo on a hill over the village Krásnohorské Podhradie.

    Photo details: Sony A7III + Sony GM 16-35 mm, f/2.8 , panorama of 18
    images with exposure of 1/125 second exposure, ISO-100, @f/5.6
    * Jablonovské sedlo, Slovakia Coordinates: 48.6196, 20.6293

    Related EPODs

    Winter Rainbow Observed Over Southern Slovakia Moondogs and
    Paraselenic Arc Crepuscular Rays in the Philippines and Rainbow
    Wheel Over Belgium Snow Halo Over Mala Fatra Mountains
    Atmospheric Optics Observed in Fog Archive - Picket Fence
    Aurora
    More...

    Atmospheric Effects Links

    * Atmospheric Optics
    * Optic Picture of Day: Gruppo Astrofili Galileo Galilei
    * Color and Light in Nature
    * The Colors of Twillight and Sunset
    * Refraction Index
    * Image Gallery: Atmospheric Effects
    * What is a Rainbow?

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

    --- up 4 weeks, 4 days, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Wed Jun 1 12:00:36 2022
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Multicolored Aurora Over Finland

    June 01, 2022

    RedAuroraSmaller

    Photographer: Dennis Lehtonen

    Summary Authors: Dennis Lehtonen; Cadan Cummings

    The photo above features a beautiful aurora display that occurred
    over Finland on February 11, 2022. This aurora event occurred due to
    energetic particles emitted from a coronal mass ejection on
    February 6^th interacting with the Earth’s magnetosphere.
    Although our planet’s magnetic field protects us from the solar
    wind, the energetic particles from geomagnetic storms are steered
    towards the north and south magnetic poles where they interact with
    oxygen molecules in the upper atmosphere to create a spectacular
    green and red display.

    To get a clear view of the event, I packed my gear and cycled a few
    kilometers to a swamp area located in middle of a forest. After around
    one hour of waiting, I saw something I had never seen before. Half of
    the sky began to be covered in faint red auroras. I knew something
    huge was about to happen and remarkably the sky came raining down with
    vibrant auroras. At around midnight the auroras had escaped to the
    south horizon, giving people in south- and mid-Finland an impressive
    display as well.
    * Sodankylä, Finland Coordinates: 67.416, 26.589

    Related EPODs

    Multicolored Aurora Over Finland Supernumerary Rainbow Over
    Modica, Italy Haleakala Shadow and Belt of Venus Four Types of
    Rainbows Over Taiwan Solar Halo and Sundog over Camelot
    Colorful Lights and Calm Night in Sweden
    More...

    Atmospheric Effects Links

    * Atmospheric Optics
    * Optic Picture of Day: Gruppo Astrofili Galileo Galilei
    * Color and Light in Nature
    * The Colors of Twillight and Sunset
    * Refraction Index
    * Image Gallery: Atmospheric Effects
    * What is a Rainbow?

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

    --- up 13 weeks, 2 days, 20 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Fri Jul 1 12:01:00 2022
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    The Wonder of Roots

    July 01, 2022


    IMG_2570

    Photographer: Ray Major
    Summary Author: Ray Major

    I couldn’t help but notice this tree and its tentacle-like roots on a
    trail to Twin Falls in Pickens County, South Carolina. The
    roots appear to be crawling across a rock. It’s a testament to the
    tenacity of life on this planet. The small patch of soil on top of the
    rock, where the tree (possibly a Tree of Heaven, Ailanthus
    altissima) began to grow, was too small to support a mature tree.
    However, it was able to extend its roots and find deeper soil to draw
    in nourishment. After beginning life under less-than-ideal
    circumstances, it was able to survive, and thrive. It made quite a
    spectacle of itself in the process. Photo taken on July 7, 2008.

    Twin Falls, Pickens County, South Carolina Coordinates: 35.0098,
    82.8214


    Related EPODs

    The Wonder of Roots The Resin of the Cherry Tree Flower and
    Fruit Grown Directly on Tree Trunk and Main Branches Effect of
    Rainfall on Ornamental Flowers Canary Island Pine Regrowth After
    Eruption The Hidden Beauty of Seeds and Fruits
    More...

    Plant Links

    * Discover Life
    * Tree Encyclopedia
    * What are Phytoplankton?
    * Encyclopedia of Life - What is a Plant?
    * USDA Plants Database
    * University of Texas Native Plant Database
    * Plants in Motion
    * What Tree is It?

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

    --- up 17 weeks, 4 days, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Mon Aug 1 12:01:08 2022
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Atacama Desert and Volcanic Twilight

    August 01, 2022


    DuskOnMarsWSMALLer

    Photographer: Tomas Slovinsky
    Summary Author: Tomas Slovinsky; Jim Foster

    The photo above showing a reddened twilight sky over a barren landscape
    comes from San Pedro de Atacama, Chile. It was taken on April 22, 2022.
    The Atacama Desert is almost at the same latitude as the Tonga
    Volcano that erupted in December of 2021. Throughout the autumn months
    (spring in the Northern Hemisphere), during each twilight period the
    sky was imbued with deep red colors as volcanic ash in the upper
    atmosphere acted to increase the pathlength of sunlight (and
    moonlight), thereby effectively extinguishing the shorter wavelength
    colors from our view.

    In many ways, the resulting landscape/nightscape resembled that of
    Mars at sunset. Also found in the Atacama are ancient, dry
    riverbeds, not too dissimilar from the ones discovered on Mars,
    where water once flowed in the past. On evenings such as this, you
    could almost imagine that you were on the Red Planet. Note that the
    patch of light at right center, to the right of the Milky Way, is the
    Large Magellanic Cloud.


    San Pedro de Atacama, Chile Coordinates: -22.9087, -68.1997


    Related EPODs

    Atacama Desert and Volcanic Twilight Triple Halo Event - 22°
    Circular Halo, 9° Halo, and Circumscribed Halo Fogbow over Sebago
    Lake, Maine Cloud Corona Over the SIerra Nevada Northern Lights
    Take Center Stage Over Central Alaska Solar Halo Over Torres
    Vedras, Portugal
    More...

    Atmospheric Effects Links

    * Atmospheric Optics
    * Optic Picture of Day: Gruppo Astrofili Galileo Galilei
    * Color and Light in Nature
    * The Colors of Twillight and Sunset
    * Refraction Index
    * Image Gallery: Atmospheric Effects
    * What is a Rainbow?

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

    --- up 22 weeks, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Thu Sep 1 12:01:08 2022
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    First Light on the Circle Cliffs Anticline

    September 01, 2022

    TomMc_EPOD.TomCircleCliffsBurrWolverineTrailUT2022b (004)

    TomMc_EPOD.CircleCliffsStratigraphyB (003)

    Photographer: Thomas McGuire

    Summary Author: Thomas McGuire

    Baseball player Yogi Berra was famous for quotations such as “It’s
    so crowed, nobody goes there anymore.” Perhaps they shouldn’t.

    While places such as the Grand Canyon, Yellowstone and Yosemite host
    crowds that often overrun the facilities, as well as overrunning the
    visitor experience, other scenic sites in the United States are,
    arguably, just as beautiful and virtually undiscovered. One such place
    is the Grand Staircase-Escalante National Monument in southern
    Utah. Both the variety of landforms and the expansive size make this a
    crown of the hidden jewels.

    The Circle Cliffs is an anticline in which the central portion has
    been eroded down, while exposing the youngest layer as cliffs that
    surround the internal valley. This anticline encompasses hundreds of
    square miles of juniper, dotted high desert. In most of the
    Monument, facilities are non-existent. The Burr Trail is a paved
    road that crosses the Circle Cliffs Valley. Other roads are unpaved.

    TomMc_EPOD.CircleCliffsUpliftStratigraphyUTB (003)

    Geology of Grand Staircase-Escalante National Monument, Utah: Hellmut
    H. Doelling, Robert E. Blackett, Alden H. Hamblin, J. Douglas Powell,
    and Gayle L. Pollock



    Grand Staircase-Escalante National Monument, Utah Coordinates: 37.4609,
    -111.5943



    Related EPODs

    First Light on the Circle Cliffs Anticline Mudcracks: Now and
    Then Mantling on Utah’s Hogback Ridge Dendrite Inclusion in
    Opal New Eddystone Rock Varvite Park in Brazil
    More...

    Geology Links

    * Earthquakes
    * Geologic Time
    * Geomagnetism
    * General Dictionary of Geology
    * Mineral and Locality Database
    * Mohs Scale of Mineral Hardness
    * This Dynamic Earth
    * USGS
    * MyShake - University of California, Berkeley
    * USGS Ask a Geologist
    * USGS/NPS Geologic Glossary
    * USGS Volcano Hazards Program

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

    --- up 26 weeks, 3 days, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Sat Oct 1 12:01:04 2022
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Basket Stinkhorn

    September 30, 2022

    Stinghorn

    Photographer: Mila Zinkova
    Summary Author: Mila Zinkova

    Shown above is the Basket Stinkhorn, Clathrus ruber, that I came
    upon during a walk in the woods not far from San Francisco, California.
    Its odor is repugnant to you and I but is evidently like catnip to
    flies. " They flock to her foetid scent, feed upon the
    spore-impregnated greenish-black gleba, and soar off, spreading
    stinkhorn spores in their wake."

    Most often found in temperate deciduous forests, Clathrus ruber
    hatches from an egg-like film. At the base of which is a mycelial
    “root,” that at this stage has little scent and might be edible to
    some. However, it doesn’t take long before its stench is so
    overpowering that only a creature like a fly could be attracted to it.
    Click here to see a video from hatching to decaying.



    Related EPODs

    Basket Stinkhorn Use of Wild Plants in Floriculture The
    Wonder of Roots: Part 2 Bird's Nest Fungus Red Coloration in
    Salt Marshes Lightning Scar on Tulip Tree
    More...

    Plant Links

    * Discover Life
    * Tree Encyclopedia
    * What are Phytoplankton?
    * Encyclopedia of Life - What is a Plant?
    * USDA Plants Database
    * University of Texas Native Plant Database
    * Plants in Motion
    * What Tree is It?

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

    --- up 30 weeks, 5 days, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Tue Nov 1 12:01:14 2022
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Wafer Thin Moon and Pumpkin Sky

    October 31, 2022


    MatthewC_DSC_1834s2s

    Photographer: Matthew Chin
    Summary Author: Matthew Chin; Jim Foster
    Can you spot the sliver of the crescent Moon? Because it was only about
    1.3% illuminated when this photo was snapped, at dawn on June 28, 2022,
    it isn’t exactly conspicuous against the pumpkin-colored sky. As night
    has now lost its grip, hordes of bats are returning to their caves
    (could this be the source of the dark smudge at lower right?) and other
    spooky, nocturnal creatures will soon be asleep in their lairs. Photo
    taken in Yuen Long, Hong Kong, on June 28, 2022, at 05:12 a.m. local
    time.

    Yuen Long, Hong Kong Coordinates: 22.4445, 114.0222


    Related EPODs

    Wafer Thin Moon and Pumpkin Sky Paraselene, Antares and
    Supermoon Witches Broom in Cygnus Observing Six Major Annual
    Meteor Showers Loana Valley of Italy at Night Total Lunar
    Eclipse of May 15/16, 2022
    More...

    Night Sky Links

    * Space Weather Live
    * Space Weather Live Forum
    * About the Moon
    * American Meteor Society
    * Arbeitskreises Meteore e.V.
    * Global City Lights
    * Heavens Above Home Page
    * The International Meteor Organization
    * Lunar and Planetary Institute
    * MoonConnection
    * NASA Eclipse Web Page
    * Understanding The Moon Phases

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

    --- up 35 weeks, 1 day, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Thu Dec 1 11:01:10 2022
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Mt. Baker at Sunrise

    December 01, 2022


    220830-3

    Photographer: Marli Miller
    Summary Author: Marli Miller

    Reaching an elevation of 10,781 feet (3,286 m), Mt. Baker dominates
    the landscape of northern Washington. This view, towards the WSW from
    near Lake Ann, shows two of the more than 15 named glaciers that
    descend in a radial pattern around the volcano: the Park Glacier on
    the right; and Boulder Glacier on the left.
    Mt. Baker, a stratovolcano, erupted andesite and dacite
    lavas from as far back as 140,000 years ago, but its most active period
    occurred between 25,000-12,000 years ago. It was during this time that
    it built its base and summit cone. Since then, it’s only erupted ash,
    although a collapse of one of its flanks occurred some 6700 years ago.
    Multiple small events took place during the 1800s and an increase in
    gas emissions in 1975 suggested the presence of new magma in the
    volcano. These emissions have tapered off through time.
    The USGS maintains an active monitoring program at Mt. Baker.
    Because of the extensive glaciers, even small eruptions can trigger
    devastating lahars (volcanic mudflows), which can flow great
    distances away from the volcano. Photo taken on August 22, 2022.

    Mt. Baker, Washington Coordinates: 48.832, -121.643


    Related EPODs

    Mt. Baker at Sunrise Fossil Find in Sicily, Italy Arizona’s
    China Wall Fossil Lake’s Legacy at Wyoming’s Fossil Butte Wagon
    Tracks from the Old West? First Light on the Circle Cliffs
    Anticline
    More...

    Geology Links

    * Earthquakes
    * Geologic Time
    * Geomagnetism
    * General Dictionary of Geology
    * Mineral and Locality Database
    * Mohs Scale of Mineral Hardness
    * This Dynamic Earth
    * USGS
    * MyShake - University of California, Berkeley
    * USGS Ask a Geologist
    * USGS/NPS Geologic Glossary
    * USGS Volcano Hazards Program

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

    --- up 39 weeks, 3 days, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)