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Carbonado, commonly known as black diamond, is one of the toughest forms of natural diamond. It is an impure, high-density, micro-porous form of polycrystalline diamond consisting of diamond, graphite , and amorphous carbon , with minor crystalline precipitates filling pores and occasional reduced metal inclusions. [ 1 ]
The Gobi Desert is the fastest expanding desert on Earth, as it transforms over 3,600 square kilometres (1,400 square miles) of grassland into wasteland annually. [58] Although the Gobi Desert itself is still a distance away from Beijing , reports from field studies state there are large sand dunes forming only 70 km (43.5 mi) outside the city.
Some geographers and ecologists prefer to regard the western area of the Gobi region (as defined above): the basin of the Tarim in Xinjiang and the desert basin of Lop Nor and Hami , as forming a separate and independent desert, called the Taklamakan Desert. [2] Much of the Gobi is not sandy, instead resembling exposed bare rock.
The Eastern Gobi desert steppe is a deserts and xeric shrublands ecoregion in Mongolia and northern China. It is the easternmost of the ecoregions that make up the larger Gobi Desert . It lies between the more humid Mongolian–Manchurian grassland on the north, east, and southeast, and the drier Alashan Plateau semi-desert to the west.
Styloolithus, another fossil enantiornithine egg from the Gobi, differs from Gobioolithus in that it is larger and has a thicker eggshell with a proportionately smaller mammillary layer. [1] Laevisoolithids , which are also eggs of enantiornithines, are also larger than Gobioolithus , but they have a much thicker mammillary layer.
The park lies on the northern edge of the Gobi Desert. The higher elevations contain areas of steppe, and reach elevations of up to 2,600 meters. A number of rare plants and animals are found in the park, including the elusive snow leopard and the Gobi camel. Areas of sand dunes are found, most famously the Khongoryn Els - the Singing Sands.
Desert varnish – Orange-to-black rock coating in arid environments; Eduction (geology) – Sideways spreading in the Earth's crust, a mechanism of surface rock formation; Erg – Broad area of desert covered with wind-swept sand; Hamada – Desert landscape with mostly rock instead of sand; Saltation (geology) – Particle transport by fluids
The Gobi Lakes Valley is about 500 km (310 mi) west-to-east, and 150 km (93 mi) north-to south, at elevations of 1,000–1,400 metres (3,300–4,600 ft). [2] The region is desert steppe, with rivers from the Khangai Mountains on the north providing most of the water to the lakes. On the south the region is bounded by the Gobi-Altai range, the ...
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