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Loess in Vicksburg, Mississippi, United States. A loess (US: / ˈ l ɛ s, ˈ l ʌ s, ˈ l oʊ. ə s /, UK: / ˈ l oʊ. ə s, ˈ l ɜː s /; from German: Löss) is a clastic, predominantly silt-sized sediment that is formed by the accumulation of wind-blown dust. [1]
Adenium obesum, more commonly known as a desert rose, is a poisonous species of flowering plant belonging to the tribe Nerieae of the subfamily Apocynoideae of the dogbane family, Apocynaceae. [3] It is native to the Sahel regions south of the Sahara (from Mauritania and Senegal to Sudan ), tropical and subtropical eastern and southern Africa ...
The Sonoran Desert. The Sonoran Desert is a North American desert and ecoregion which covers large parts of the southwestern United States and of northwestern Mexico. With an area of 260,000 square kilometers (100,000 sq mi), it is the hottest desert in Mexico. The western portion of the Mexico–United States border passes through the Sonoran ...
The seed cake remaining after the oil is extracted is commonly used as animal fodder in Africa. [9] The seeds of the Balanites aegyptiaca have molluscicide effect on Biomphalaria pfeifferi. [13] Where the species coexist, African elephants consume the desert date. [14]
• Brown: bedrock • Yellow/white: sand • Green: vegetation • Blue: salty sediments. The Richat Structure is the location of exceptional accumulations of Acheulean artifacts. [14] [15] These Acheulean archaeological sites are located along wadis that occupy the outermost annular depression of this structure. Pre-Acheulean stone tools also ...
Salvia columbariae is an annual plant that is commonly called chia, chia sage, golden chia, or desert chia, because its seeds are used in the same way as those of Salvia hispanica . It grows in California, Nevada, Utah, Arizona, New Mexico, Sonora , and Baja California , [ 2 ] and was an important food for Native Americans .
A satellite image of the Sahara, the world's largest hot desert and third largest desert after Antarctica and the Arctic. Desert greening is the process of afforestation or revegetation of deserts for ecological restoration (biodiversity), sustainable farming and forestry, but also for reclamation of natural water systems and other ecological systems that support life.
Caliche fossil forest on San Miguel Island, California. Caliche (/ k ə ˈ l iː tʃ iː /) (unrelated to the street-slang "Caliche" spoken in El Salvador) is a soil accumulation of soluble calcium carbonate at depth, where it precipitates and binds other materials—such as gravel, sand, clay, and silt.