The meaning of the flag.

Code by Fab


Legend :

1)      « Yellowstone »

2)      « You will threaten (reversed). “Babylon” "Oh great mountain “you shall become a plateau”

3)      “Going up”

4)      “3 days”

6)      “His/her enemy”

7)      “Judgement” “His judgement”

8)      “In that day”

9)      “Holocaust”

10)  “Holocaust” “Judge”

Yellowstone - threat

Legend :

1)      « Threat/menace » « Yellowstone »

2)      “The mountain threatens”

3)      “Volcano. Hill/mound (reversed)”

4)      “Hell”

5)      “Hell”

6)      “Hell”

7)      “To send away”

The Yellowstone (from Wikipedia free encyclopedia)

The park sits on a high plateau which is, on average, 8000 feet (2,400 m) above sea level and is bounded on nearly all sides by mountain ranges of the Middle Rocky Mountains which range from 10,000 to 14,000 feet (3,000 to 4,300 m) in elevation. These ranges are the; Gallatin Range (to the north-west), Beartooth Mountains (to the north), Absaroka Mountains (to the east), Southern Absaroka Mountains (south-east corner), Teton Mountains (to the south - see Grand Teton National Park) and the Madison Range (to the west). The most prominent summit in the plateau is Mount Washburn at 10,243 feet (3,122 m).

Just outside of the south-western park border is the Island Park Caldera which is a plateau ringed by low hills. Beyond that is the Snake River Plains of southern Idaho which are covered by flood basalts and slope gently to the south-west (see Craters of the Moon National Monument).

The major feature of the Yellowstone Plateau is the Yellowstone Caldera; a very large caldera which has been nearly filled-in with volcanic debris and measures about 60 km long by about 50 km wide (40 by 30 miles). Within this caldera lies most of Yellowstone Lake which is the largest high-elevation lake in North America and two resurgent domes which are areas that are uplifting at a slightly faster rate than the rest of the plateau.


olumnar basalt near Tower Fall. Large floods of basalt and other lava types preceded mega-eruptions of super-heated ash and pumice.

Yellowstone is at the northeast tip of a smooth U-shaped curve through the mountains, which is now the Snake River Plain. This curved plain was created as the North American continent drifted across a stationary volcanic hot spot beneath the Earth's crust. This hot spot used to be near what is now Boise, Idaho, but North America has drifted at a rate of 4.5 centimetres a year in a south western direction, shifting the hot spot to its present location.

Yellowstone Caldera is the largest volcanic system in North America. It has been termed a "supervolcano" because the caldera was formed by exceptionally large explosive eruptions. It was created by a cataclysmic eruption that occurred 630,000 years ago that released 1000 cubic kilometres of ash, rock and pyroclastic materials (this was 800 times larger than Mount St. Helens' 1980 eruption), forming a crater nearly a kilometre deep and 70 by 40 km in size (45 by 25 miles) (the size of the caldera has been modified a bit since this time and has mostly been filled-in, however). The welded tuff geologic formation created by this eruption is called the Lava Creek Tuff. In addition to the last great eruptive cycle there were two other previous ones in the Yellowstone area.

The heat from the series of mega-eruptions continues to feed Yellowstone's many geysers, hot springs, and mud pots.

Each eruption is in fact a part of an eruptive cycle that climaxes with the collapse of the roof of a partially-emptied magma chamber. This creates a crater, called a caldera, and releases vast amounts of volcanic material (usually through fissures that ring the caldera). The time between cataclysmic eruptions in the Yellowstone area has ranged from 600,000 to 900,000 years but the small number of such climax eruptions can not be used to make a prediction for the time range for the next climax eruption.

The first and largest eruption, climaxed to the south west of the current park boundaries 2.2 million years ago and formed a caldera about 80 by 50 km in size (50 by 30 miles) and hundreds of metres deep after releasing 2,500 cubic kilometres of material (mostly ash, pumice and other pyroclastics). This caldera has been filled-in by subsequent eruptions and the geologic formation created by this eruption is called the Huckleberry Ridge Tuff. The second eruption, at 280 cubic km of material ejected, climaxed 1.2 million years ago and formed the much smaller Island Park Caldera and the geologic formation called the Mesa Falls Tuff. All three climax eruptions released vast amounts of ash that blanketed much of central North America and fell many hundreds of miles away (as far as California to the southwest; see Lake Tecopa). The amount of ash and gases released into the atmosphere probably caused significant impacts to world weather patterns and led to the extinction of many species in at least North America. About 160,000 years ago a much smaller climax eruption occurred which formed a relatively small caldera that is now filled-in with the West Thumb of Yellowstone Lake.

 The Grand Canyon of the Yellowstone was created by catastrophic ice-dam-break floods that exploited uplift-induced faults.

After the last major climax eruption 630,000 years ago until about 70,000 years ago, Yellowstone Caldera was nearly filled-in with periodic eruptions of rhyolitic lavas (example at Obsidian Cliffs) and basaltic lavas (example at Sheepeaters Cliff). But 150,000 years ago the floor of the plateau began to bulge-up again. Two areas in particular at the foci of the elliptically-shaped caldera are raising faster than the rest of the plateau. This differential in uplift has created two resurgent domes (Sour Creek dome and Mallard Lake dome) which are uplifting at 15 millimetres a year while the rest of the caldera area of the plateau is uplifting at 12.5 mm/yr.

Preserved within Yellowstone are many geothermal features and some 10,000 hot springs and geysers, 62% of the planet's known total. The super-heated water that sustains these features comes from the same hot spot described above. The most famous geyser in the park, and perhaps the world, is Old Faithful Geyser (located in Upper Geyser Basin) but the park also contains the largest geyser in the world, Steamboat Geyser (in Norris Geyser Basin; see Geothermal areas of Yellowstone).






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