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.


Microbialites in Puna Argentina

November 16, 2022


Microbialitos

Photographer: Carlos Di Nallo
Summary Author: Carlos Di Nallo
In the lagoon shown above, in the Catamarca province of Argentina,
modern microbialites can be observed. These ecosystems are "living
rocks" formed by diatom microorganisms and by various minerals.
They’re among the oldest ecosystems on our planet and dominated it for
3-billion years, producing large amounts of oxygen and are even
responsible for helping to create the ozone layer.

Today, they’re found in remote areas of northwestern Argentina, an
environment similar to that of many regions on Earth millions of years
ago -- high solar radiation and salinity conditions. They were
discovered by the Argentine scientist Dr. Maria Eugenia Farias.
Photo taken on May 15, 2022.

Antofagasta de la Sierra, Catamarca, Argentina Coordinates:
-26.066667, -67.416667


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

https://epod.usra.edu

--- up 37 weeks, 2 days, 21 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.


Red Bar Natural Bridge, Utah

December 16, 2022

RedBarBridgeForEPOD

Photographer: Stan Wagon

Summary Author: Stan Wagon

Red Bar Bridge is a remarkable landform found at the head of a small
wash near the bottom of the Moki Dugway, a famously steep road near
Mexican Hat, Utah. This waterfall bridge forms a natural arch
caused by the tremendous flow of water and has dimensions of
approximately 85 feet (26 m) in length with an 8.5-foot (2.6 m) gap.
The arch is composed of sandstone from the Halgaito Sandstone
Formation, which underlies the massive Cedar Mesa Sandstone
Formation. These formations are part of the Cutler Geologic Group
that arose during the Permian period.

Photo details: Sony A6500 camera; 10 mm lens; f/13; 1/800 second
exposure; ISO 400 (first shot), 320 second shot.


Mexican Hat, Utah Coordinates: 37.1519, -109.8671


Related EPODs

Red Bar Natural Bridge, Utah Crystal Forms in Petrified Wood
Mt. Baker at Sunrise Fossil Find in Sicily, Italy Arizona’s
China Wall Fossil Lake’s Legacy at Wyoming’s Fossil Butte
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 41 weeks, 4 days, 21 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.


Dew Drops

October 14, 2022


IMG_8940

IMG_8941

Photographer: Marco Meniero

Summary Author: Marco Meniero

When my mother asked me to photograph the roses in her garden with my
iPhone11 Pro, I happened to notice these beautiful dew drops. The
temperature at which the air is saturated with vapor is called the
dewpoint. When the surface temperature falls to the dewpoint, the
water vapor contained in the atmosphere condenses to form drops
(dew drops) on leaves and other surfaces. This process distinguishes
dew from precipitation that forms directly in the air – raindrops.
Photos taken on October 10, 2022.


Civitavecchia, Rome, Italy Coordinates: 42.0924, 11.7954


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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 32 weeks, 6 days, 20 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)