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Just off the road to Krýsuvík is a solfatara field at Seltún, Iceland which contains mud pools, acidic hot springs; fumaroles and steaming ground. Fumaroles in the area deposit sulfur and sulphates on the ground near the vents. Fumaroles whose steam is rich in sulfur are called solfataras. The main sulphur area is a fumarole field that lies southwest of the boardwalk at Seltún but sulfur and sulphates around some of the steam vents, mud pools and acidic hot springs were visible to us as we strolled along the boardwalk.
Seltún is part of the large Krýsuvík Geothermal field which lies on one of the NE-SW trending volcanic systems that cross the Reykjanes Peninsula. The volcanic zones lie in the middle of the fissure zone on the Mid-Atlantic Ridge which traverses Iceland and are visible along the south of Reykjanes.
In the mid-20th century there were plans to develop the geothermal field for utilization, including power production, and Seltún then became one of the main drilling targets. There are old drill pads to be seen near the path along the creek. According to the Iceland Geosurvey (ISOR) one of the "boreholes started erupting intermittently in the winter of 2010". They reported that an interval of a few days between the eruptions. We found the spot but on two different visits to the field I saw no sign of geyser activity. ISOR also reports "another old borehole blew up in 1999 forming a crater with a diameter of about 30 m, now filled by mud except where a flow of steam keeps boiling pits open". That unexpected explosion in 1999 reportedly caused the geothermal project to be halted. The springs have been preserved due to the lack of drilling and geothermal exploitation.
Temperatures are over 200 degrees C just below the surface. Geologist from the Iceland Geosurvey believe "the water of the pools is surface water heated by steam from a boiling geothermal reservoir. Accompanying gases such as hydrogen sulphide and carbon dioxide acidify the water and alter the rock to clay. Only the uppermost 300 m of the reservoir at Seltún is boiling, i.e., follows the boiling curve in accordance with increasing pressure. Below this depth, a temperature inversion occurs, indicating that the boiling section is fed laterally from an upflow some distance away.”
The geothermal field is located in the Reykjanes Geopark.
Geologic and geothermal info from Iceland GeoSurvey (ISOR) . Some text in the caption from their web page at: www.geothermal.is/17-seltun-high-temperature-area-solfataras
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A dark colored mud dauber from central Benin (collection from 1997). This wasp lives in miombo forests with 6 months of drought. The pointed and long mandibles are used to collect mud to build nests. The nests are often seen in crevices, old trees and houses. The impressive jaws are also used to hunt spiders that are brought to the nest. Total length of this wasp is 3,5cm; this image is about 10mm tall.
Studio stack based on 176 images taken with an MP-E 65mm at 3,5x (ISO100, f5.6, 1/200sec, wb on flash). Flash needed 3x2 AA batteries (GP, rechargeable NiMH, 2600mAh, 1.2V). One flash at 20 cm, diffused with a bristol paper roll, fitted rather close around the specimen (diameter 35mm). The colored streaks in the background (upper right) come from the wing.
This is the first time I have seen a mud brick chimney. I grew up in a mud brick home, but the chimney was brick.
Mud wrestlers during a bout at the Akhara Siyaram club on the banks of the Hoogly River in Kolkata. There are about fifty club members who treat the facility rather like a gym where they meet at around 5am to practice their training routines under the guidance of the guru, Jawala Tewari.
Kolkata, West Bengal. India.
December 2017. © David Hill
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One of three rhinos in a group that was relaxing in the midday hotness. Photographed in Ziwa Rhino Sanctuary.
Dupont WA, Nisqually National Wildlife Refuge, Canon EOS 5D Mark II, EF 17-40mm f /4.0L
© All Rights Reserved, PJ Resnick
PJ Resnick Photography: pjresnickphotography.smugmug.com
Better on black. Click on photo or press L.
Fluidr Gallery Sets:
128/365 - We have a water table/sand table combo for the kids...word of advice: don't EVER buy one of these...as you can see from this picture, it's a MUDDY MESS! We just let the boys go to town on it though since it was really the first time we enjoyed our backyard this year...plus it was Mother's Day so part of our tradition is that I don't have to lift a finger all day (which means my husband had to bathe them after, ha ha).
"Mud-puddling is the phenomenon mostly seen in butterflies and involves their aggregation on substrates like wet soil, dung and carrion to obtain nutrients such as salts and amino acids. This behaviour has also been seen in some other insects, notably the leafhoppers.
Lepidoptera (butterflies and moths) are diverse in their strategies to gather liquid nutrients. Typically, mud-puddling behavior takes place on wet soil. But even sweat on human skin may be attractive to butterflies. The most unusual sources include blood and tears
This behaviour is restricted to males in many species, and in some like Battus philenor the presence of an assembly of butterflies on the ground acts as a stimulus to join the presumptive mud-puddling flock"
Vernacular architecture in the small agricultural villages in the Peruvian Altiplano around the Lago Umayo, just west of Lake Titicaca.
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This pattern was changing before my eyes. As each plate of mud dried in the sun it cracked or curled more to create this intricate design.
Dress your best for this Tuxedo Mud Cake. These down-under classic cakes are layered on top of one another with alternating frostings, no holiday required!
Get the recipe at: layercakeparade.com/tuxedo-mud-cake/
No kidding. The swamps at Coyote HIlls have all turned into mud cracks. Taken with Samyang 14mm F2.8 Lens at F11.
12.5 miles of physical hell, 24 muscle and mind sapping obstacles and this is what the finish line looks like, 25 meters of deep slippy mud, hay bales and multiple electric shocks between you and the official tough mudder headband and t shirt and free pint, i wont laugh, im doing it next year.
My Greek friend rally driver Dionysis "Sakis" Spanos drifting with his Subaru Impreza WRX Sti spec-C rally car, shot a few years ago while doing a driving show.
Re-uploaded here (with some new processing) for the Challenge #91 - Automobiles hosted by
Gary in our Nikon DSLR Forum group
Sometimes, when I loook at some older shots I posted here, I feel like the title is better than the picture in itself... Probable the case here, but the title would not work alone.
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[10/365] Quest for mud!
For years I have longed for a picture with MX bikes and flying mud - my journey has come to an end.
My hard disk is full of countless shots of black dots to an empty background or flying mud with no context or meaning.
This picture is the shit!!!
Shot on “Stångebroslaget” which is an Enduro competition with over 2000 participants. I usually participate myself, but this year only my brother drove. My brother had his share of the mud and I had mine, but in a completely different way. Yes, I got dirty! ;)
View large!