Anne Elliott's photos with the keyword: coral-like formations

This was an absolutely amazing week away with my friends, Linda and Tony, from England. I had known Linda since she was a baby and I was four or five years old, and our parents were best friends. Believe it or not, this was only my second holiday in about 30 years! Some of you may just remember that when my Brother in England died, several of my long-time friends who lived in the same city all stepped forward and helped me deal with everything long distance, from my Brother's funeral to finding everything possible in the house a good home (sold or donated). All my parents' belongings were there, too, so it was a mammoth task to go through everything and put aside every single personal item or document, which were then shipped to me here. When Linda and Tony were planning their trip to Canada, they persuaded me to join them for this wonderful week in Yellowstone National Park. I didn't know we were also going to Grand Teton National Park and then coming home via Glacier/Waterton National Parks, too! A wonderful treat! It's not easy to remember what all the different hot springs and geysers are in Yellowstone National Park, so hopefully I am identifying them correctly. I believe this hot spring is Abyss Pool, which is near the Black Pool, at the West Thumb Geyser Basin. Amazing how similar some of them look - especially once you are back home after your trip and a year and a half has gone by! In the distance is Yellowstone Lake. "Temperature 172°F. Dimensions 30x57 feet. Depth 53 feet. Abyss Pool is a colorful and interesting pool in the West Thumb Geyser Basin. Abyss is the deepest pool known in Yellowstone and received its name for its abyss-like depth. The dark green-colored water gives the illusion of a bottomless pool. Vandalism may have changed this pool's temperature. Coins and other debris thrown in have caused the vent to plug. The reduced spring flow also reduced the pool temperature, allowing abundant algae growth along the edge and run-off channels. The extensive microbial mats now support ephydrid flies, spiders and killdeers. An unusual eruption in 1987 caused the pool to surge and temporarily destroyed the microbial mats." www.yellowstonenationalpark.com/westthumb.htm

Taken at the West Thumb Geyser Basin in Yellowstone National Park, Wyoming, US, on 15 September 2012. The deposits around the edge of this hot spring, Black Pool, made such a colourful contrast to the almost turquoise colour of the water. My photo shows just one small portion of the the edge, taken from the boardwalk. "The pool was cool enough up until 1991 for dark orange-brown cyanobacteria to grow throughout the pool. When combined with the blue of the water, the pool appeared to be an exceptionally dark green to almost black, hence the name." An exchange of function took place in 1991, shifting thermal energy to Black Pool and nearby Abyss Pool, causing them to heat up. Black Pool's temperature became hot enough to kill all the cyanobacteria in the pool, turning the pool a rich teal blue color. The pool also had frequent boiling eruptions on August 15, 1991, doming the water to 3 feet and causing heavy runoff. Black Pool remains extremely hot, and is now one of Yellowstone's most beautiful and intensely blue pools. The name of the pool remains "Black Pool." From Wikipedia. The dark orange-brown cyanobacteria seems to be back along this one edge of the spring. "Temperature of Black Pool is 132°F. Dimensions 40x75 feet. Depth 30 feet. Black Pool is one of the largest springs in the West Thumb Geyser Basin. The dark-colored water is the combination of the natural, transparent blue of the water and the orange algae lining of the pool. The low temperature of the pool is responsible for the abundant growth of the orange-colored microbial mats. Algae and cyanobacteria in combination with sinter deposits have created coral-like formations on the sides of the pool but these are visible for only a few feet. The pH of Black Pool is a slightly alkaline 7.8." www.yellowstonenationalpark.com/westthumb.htm

The contrast of deep, almost turquoise water with the white and vibrant orange deposits around the edge of hot springs in Yellowstone National Park was just breathtaking. Made for some interesting patterns and textures. Taken on 15 September, the 5th day of an amazing week's trip with friends, when we stopped at the West Thumb Geyser Basin. My photo shows part of the edge of Black Pool. "Temperature of Black Pool is 132°F. Dimensions 40x75 feet. Depth 30 feet. Black Pool is one of the largest springs in the West Thumb Geyser Basin. The dark-colored water is the combination of the natural, transparent blue of the water and the orange algae lining of the pool. The low temperature of the pool is responsible for the abundant growth of the orange-colored microbial mats. Algae and cyanobacteria in combination with sinter deposits have created coral-like formations on the sides of the pool but these are visible for only a few feet. The pH of Black Pool is a slightly alkaline 7.8." www.yellowstonenationalpark.com/westthumb.htm

Not easy to remember what all the different hot springs and geysers are, in Yellowstone National Park, so hopefully I am identifying them correctly. I believe this hot spring is Black Pool, at the West Thumb Geyser Basin. Amazing how similar some of them look - especially once you are back home after your trip and five weeks have gone by : ) "The pool was cool enough up until 1991 for dark orange-brown cyanobacteria to grow throughout the pool. When combined with the blue of the water, the pool appeared to be an exceptionally dark green to almost black, hence the name." An exchange of function took place in 1991, shifting thermal energy to Black Pool and nearby Abyss Pool, causing them to heat up. Black Pool's temperature became hot enough to kill all the cyanobacteria in the pool, turning the pool a rich teal blue color. The pool also had frequent boiling eruptions on August 15, 1991, doming the water to 3 feet and causing heavy runoff. Black Pool remains extremely hot, and is now one of Yellowstone's most beautiful and intensely blue pools. The name of the pool remains "Black Pool." From Wikipedia. The dark orange-brown cyanobacteria seems to be back along this one edge of the spring. ""Temperature of Black Pool is 132°F. Dimensions 40x75 feet. Depth 30 feet. Black Pool is one of the largest springs in the West Thumb Geyser Basin. The dark-colored water is the combination of the natural, transparent blue of the water and the orange algae lining of the pool. The low temperature of the pool is responsible for the abundant growth of the orange-colored microbial mats. Algae and cyanobacteria in combination with sinter deposits have created coral-like formations on the sides of the pool but these are visible for only a few feet. The pH of Black Pool is a slightly alkaline 7.8." www.yellowstonenationalpark.com/westthumb.htm