Mauritius 4K - Walking Tour of Seven Coloured Earth

Описание: Walking tour of the most famous geological formation of Mauritius. Tortoises are also included :).

Mauritius, officially the Republic of Mauritius, is an island nation in the Indian Ocean about 2,000 kilometres (1,200 mi) off the southeast coast of the African continent, east of Madagascar. It includes the main island (also called Mauritius), as well as Rodrigues, Agaléga and St. Brandon. The islands of Mauritius and Rodrigues, along with nearby Réunion (a French overseas department), are part of the Mascarene Islands. The main island of Mauritius, where most of the population is concentrated, hosts the capital and largest city, Port Louis.

https://en.wikipedia.org/wiki/Mauritius

The seven Coloured Earths are a geological formation and prominent tourist attraction found in the Chamarel plain of the Rivière Noire District in south-western Mauritius. It is a relatively small area of sand dunes comprising sand of seven distinct colours (approximately red, brown, violet, green, blue, purple and yellow). The main feature of the place is that since these differently coloured sands spontaneously settle in different layers, dunes acquire a surrealistic, striped colouring. Since the earth was first exposed, rains have carved beautiful patterns into the hillside, creating an effect of earthen meringue.

The sands formed from the decomposition of volcanic rock (basalt) gullies into clay, further transformed into ferralitic soil by total hydrolysis; the two main elements of the resulting soil, iron and aluminium, are responsible for red/anthracite and blue/purplish colours respectively. The different shades of colour are believed to be a consequence of the molten volcanic rock cooling down at different external temperatures (hence rates), but the causes of their consistent spontaneous separation are yet to be fully clarified.

https://en.wikipedia.org/wiki/Seven_C...

One of the notable places of interest is the Coloured Earths, which is about 4 kilometres (2.5 mi) to the south west of the town. Coloured Earths is a phenomenon resulting from colour variations due to cooling of molten rock. The lava formations are estimated to be of 3.5 to 7 million years in age. These are heaps of exposed earth's crust which show up in seven colours when the sun light falls on them.[9] Viewing them in the morning hours when sun rays and the dew mingle bring out the best of its colours. A closer view is better than the views from the timber platforms and walkways erected for the purpose. The colour earth phenomenon is located downstream of the water fall on the Black River valley where the land is barren and plain which measures about 7–8 acres (2.8–3.2 ha) with hardly any vegetation. It gives the appearance of furrows in rows, as colors are observed in horizontal ridges known as "Les Cotes de Melon" ("The Melon's Slices"). An examination of the ground condition where the colours of different shades, varying from "yellow and yellowish brown to bright red, purple, and coal black" indicates about forty hues. The samples collected from this area have been subject to chemical analysis which reveal that the formation consists of cohesive formation of ferruginous clays without any organic matter, and devoid or with least presence of any principal elements of soil fertility. There is hardly any nitrogen but traces of lime, potash and phosphoric acid have been noted. However, the dominant percentage is of iron and alumina.

https://en.wikipedia.org/wiki/Chamarel

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