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Chad Basin outline. The Chad Basin is the largest endorheic basin in Africa, centered approximately on Lake Chad. It has no outlet to the sea and contains large areas of semi-arid desert and savanna. The drainage basin is approximately coterminous with the sedimentary basin of the same name, but extends further to the northeast and east.
A geologic map or geological map is a special-purpose map made to show various geological features. Rock units or geologic strata are shown by color or symbols. Bedding planes and structural features such as faults , folds , are shown with strike and dip or trend and plunge symbols which give three-dimensional orientations features.
The Roof of the World or Top of the World is a metaphoric epithet or phrase used to describe the highest region in the world, also known as High Asia. The term usually refers to the mountainous interior of Asia, including the Pamirs , the Himalayas , the Tibetan Plateau , the Hindu Kush , the Tian Shan , the country of Nepal , and the Altai ...
The Gulf of Mexico (Spanish: Golfo de México) is an oceanic basin and a marginal sea of the Atlantic Ocean, [3] [4] mostly surrounded by the North American continent. [5] It is bounded on the northeast, north, and northwest by the Gulf Coast of the United States; on the southwest and south by the Mexican states of Tamaulipas, Veracruz, Tabasco, Campeche, Yucatán, and Quintana Roo; and on the ...
The long-term preserved geologic record of a sedimentary basin is a large scale contiguous three-dimensional package of sedimentary rocks created during a particular period of geologic time, a 'stratigraphic succession', that geologists continue to refer to as a sedimentary basin even if it is no longer a bathymetric or topographic depression. [6]
USGS Geologic Map of the Gulf of Mexico. The formation of the Gulf of Mexico, an oceanic rift basin located between North America and the Yucatan Block, was preceded by the breakup of the Supercontinent Pangaea in the Late-Triassic, weakening the lithosphere.
In the essay, titled "The Grace of Water," she traces the river's history, from the geological forces that shaped the basin to today. "I'm in awe of the power of the Columbia," Pearkes said.
The Paris Basin is a geological basin of sedimentary rocks. It overlies geological strata folded by the Variscan orogeny. It forms a broad shallow bowl in which marine deposits from throughout periods from the Triassic to the Pliocene were laid down. Their extent generally decreases with time.