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.


Cracked Eggs of the Bisti Badlands

January 08, 2021

Cracked Eggs

Photographer: Thomas McGuire
Summary Author: Thomas McGuire

As followers of Earth Science Picture of the Day have seen, the
American West has some of the world's most spectacular features.
Badlands are areas where active erosion of soft sediments has
created a stark landscape largely devoid of vegetation. Rapid
erosion hasn't allowed plants to take root and develop fertile
soil. Badlands National Park in South Dakota and Petrified
Forest National Park in Arizona are prime examples of badlands. The
remote Bisti Badlands of northwest New Mexico are far less visited,
but they contain a variety of unique geological features including
hoodoos, arches, toadstools, petrified wood and other
fossils. Not the least of which is a patch of weathered
concretions known as the cracked eggs. A friend pointed out the
similarity of the boulders on the left to the iconic drawing
( "Reptiles" by M.C.Esher) in which tessellations become
animated. Photo taken February 28, 2017.
* Bisti/De-Na-Zin Wilderness, New Mexico Coordinates: 36.2921,
-108.12978

Related EPODs

Cracked Eggs of the Bisti Badlands Puget Sound Feeder Bluff
Exogenic Fulgurites Cedar Breaks: A Rainbow in Stone
Archive - Johnsondale Potholes Meride Limestone Formation
More...

Geology Links

* Earthquakes
* Geologic Time
* Geomagnetism
* General Dictionary of Geology
* Mineral and Locality Database
* Mohs Scale of Mineral Hardness
* This Dynamic Earth
* USGS
* 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 3 weeks, 2 days, 21 hours, 27 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)

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.


An Unusual Arch

February 08, 2021

ARCH

Photographer: Stan Wagon
Summary Author: Stan Wagon

There are many different types of geologic arch. Shown above is a
waterfall arch, which directly contradicts the classic arch
definition of a curved structure that gains strength from the curve.
Uniquely, this one consists of a straight row of discrete cubic forms
and has had enough strength to stand for perhaps ten thousand years.
This particular cobblestone structure is made of Salt Wash
Sandstone, part of the Morrison formation and is located in
Arches National Park. Photo taken April 22, 2018.

Photo Details: Camera: SONY ILCE-6500; Software: Adobe Photoshop
Elements 13.0 (Macintosh); Lens: E 16-70mm F4 ZA OSS; Exposure Time:
0.0016s (1/640); Aperture: ƒ/20.0; ISO equivalent: 800; Focal Length
(35mm): 24
* Arches National Park, Utah Coordinates: 38.61753, -109.61762

Related EPODs

An Unusual Arch Cerro Ventana, Argentina Mount Forato’s
Natural Arch at Sunset The Stone Donkey Archive - Black Hills
Flume Cracked Eggs of the Bisti Badlands
More...

Geology Links

* Earthquakes
* Geologic Time
* Geomagnetism
* General Dictionary of Geology
* Mineral and Locality Database
* Mohs Scale of Mineral Hardness
* This Dynamic Earth
* USGS
* 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 7 weeks, 5 days, 21 hours, 27 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)

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.


Lunar Corona Above the Rocca del Brunelleschi

October 08, 2021

VIcopisano-con-Luna-FINALE

Photographer: Marco Meniero

Summary Author: Marco Meniero; Jim Foster

Featured above is a charming lunar corona as observed above the
Rocca del Brunelleschi in Tuscany, Italy, on the night of July 12,
2021. Coronas consist of two or more concentric, pastel-colored rings.
The central bright area is called the aureole, which has the
appearance of a bluish-white disk that fades to reddish-brown towards
the edge. Note that the aureole is sometimes the only visible portion
of a lunar or solar corona. Diffraction of moonlight by minute
water droplets that compose mid-level clouds is responsible for the
formation of coronas.

The Rocca del Brunelleschi and its renowned tower was commissioned
to the architect Filippo Brunelleschi in 1434 when the village of
Vicopisano, where the tower now stands, was successfully defended
after being besieged for eight months by the Florentines.

Photo details: Eos 1DXMK2 camera; Sigma 105; f/1.4.
* Vicopisano, Tuscany, Italy Coordinates: 43.6991, 10.5831

Related EPODs

Lunar Corona Above the Rocca del Brunelleschi Lunar Crepuscular
Rays in Italy Dazzling Atmospheric Phenomena on Painted Pavement
22-Degree Halo Observed from Norfolk, Virginia Archive - Fog,
San Francisco Skyline and Crepuscular Rays Anticrepuscular Rays
Over Ontario, Canada
More...

Atmospheric Effects Links

* Atmospheric Optics
* 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 5 weeks, 21 hours, 55 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)