Sargasso Sea: The only sea without a land boundary

The Sargasso Sea is a region of the North Atlantic Ocean bounded by four currents that swirl around the Bermuda forming a vast whirlpool called the North Atlantic gyre. Unlike all other regions called seas, it has no land boundaries. It is distinguished from other parts of the Atlantic Ocean by its characteristic brown Sargassum seaweed and often calm blue water. The sargassum originates in the nutrient-rich zones close to the coast of the Americas, particularly in the Gulf of Mexico. All of the currents deposit the marine plants which they are carrying into this sea, yet the ocean water in the Sargasso Sea is distinctive for its deep blue color and exceptional clarity. It is also a body of water that has captured the public imagination, and so is seen in a wide variety of literary and artistic works and in popular culture. The Sargasso Sea is frequently (but erroneously) depicted in fiction as a dangerous area where ships are mired in weed for centuries, unable to escape.
info: wikipedia

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Elephant Foot Glacier

Romer is a land-locked freshwater fjord at the northern end of King Frederick VIII Land, near Greenland’s northeastern coast. The Lake is famous for its impressive Elephant Foot Glacier, a wide piedmont glacier with a strikingly shaped 5.4 kilometers (3 mi) wide terminal lobe flowing into the lake from the SE in its central part.
info wikipedia

By Hedwig StorchOwn work, CC BY-SA 3.0, Link

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Hamilton Pool Preserve

Hamilton Pool Preserve is a natural pool that was created when the dome of an underground river collapsed due to massive erosion thousands of years ago. The pool is located about 23 miles (37 km) west of Austin, Texas. The pool is surrounded by large slabs of limestone that rest by the water’s edge. Large stalactites grow from the ceiling high above. The ceiling and surrounding cliffs of the grotto are home to moss, maidenhair fern and cliff swallows. The Ashe juniper (cedar) uplands of the preserve are home to the endangered golden-cheeked warbler.
info source: wikipedia

By Trey Perry – http://perrygraph.com/collections/austin/products/hamilton-pool, CC BY 3.0, Link

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Maly Semyachik: a volcano with a turquoise crater lake

Maly Semyachik is a stratovolcano located in the eastern part of Kamchatka Peninsula, Russia. A hot, acidic crater lake fills the historically active Troitsky Crater, which formed during a large explosive eruption  about 400 years ago. The water in the lake has an unusual bright turquoise color. It’s because the waters of the lake are poisonous due to the content of several types of acids and other chemical compounds.The water in the lake never freezes, even when everything is covered with a layer of ice and deep snow.

info source: wikipedia

By zarmel http://www.geodiversite.net/auteur2http://www.geodiversite.net/media191, CC BY-SA 3.0, Link

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The Impressive Victoria Falls

Victoria Falls  is a waterfall in southern Africa on the Zambezi River at the border between Zambia and Zimbabwe. David Livingstone, the Scottish missionary and explorer, is believed to have been the first European to view Victoria Falls in 1855. Livingstone named his sighting in honour of Queen Victoria of Britain, but the indigenous Lozi language name, Mosi-oa-Tunya—”The Smoke That Thunders” continues in common usage as well. While it is neither the highest nor the widest waterfall in the world, Victoria Falls is classified as the largest, based on its combined width of 1,708 meters  and height of 108 meters  resulting in the world’s largest sheet of falling water. Victoria Falls is roughly twice the height of North America’s Niagara Falls and well over twice the width of its Horseshoe Falls.  There are two islands on the crest of the falls that are large enough to divide the curtain of water even at full flood: Boaruka Island (or Cataract Island) near the western bank, and Livingstone Island near the middle—the point from which Livingstone first viewed the falls.
imfo: wikipedia

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The Narrows – Zion National Park

By Christopher MichelThe Narrows., CC BY 2.0, Link

The Narrows is the narrowest section of Zion Canyon in Zion National Park, Utah. Situated on the North Fork of the Virgin River and upstream of the main canyon, The Narrows is one of the premier hikes in the park and on the Colorado Plateau. The Narrows refers to both the 3.6-mile (5.8 km) bottom-up hike from the Temple of Sinawava to Big Springs, as well as the 16-mile (26 km) top-down hike from Chamberlain’s Ranch back to the Temple of Sinawava.

info source: wikipedia

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The gems of Jiuzhaigou National Park

Jiuzhaigo is a nature reserve and national park located in the north of Sichuan Province in the southwestern region of China. The Jiuzhaigou valley is part of the Min Mountains on the edge of the Tibetan Plateau and stretches over 72,000 hectares. It is known for its many multi-level waterfalls, colorful lakes, and snow-capped peaks.

By Charlie fong – 个人, Public Domain, Link

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Guelta d’Archei – an oasis in the Sahara desert

By Sherif Ali YousefOwn work, CC BY-SA 4.0, Link

The Guelta d’Archei is probably the most famous guelta – a lower level of height ground between rocks which holds water – in the Sahara. It is a barren place located in the Ennedi Plateau, in north-eastern Chad. The reservoirs of this wetland is supported by groundwater. The guelta is a watering place for camels. and it is also inhabited by a very small number of the Nile crocodile.
info wikipedia
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Dead Vlei – Namibia’s graveyard of tree skeletons

By IkiwanerOwn work, GFDL 1.2, Link

Dead vlei is a white clay pan located near the more famous salt pan of Sossusvlei, inside the Namib-Naukluft Park in Namibia. Dead Vlei has been claimed to be surrounded by the highest sand dunes in the world, the highest reaching 300–400 meters which rest on a sandstone terrace.
The clay pan was formed after rainfall, when the Tsauchab river flooded, creating temporary shallow pools where the abundance of water allowed camel thorn trees to grow. When the climate changed, drought hit the area, and sand dunes encroached on the pan, which blocked the river from the area.

The trees died, as there no longer was enough water to survive. The remaining skeletons of the trees, which are believed to have died 600–700 years ago, are now black because the intense sun has scorched them. Though not petrified, the wood does not decompose because it is so dry.
info: wikipedia
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