Search results
Results From The WOW.Com Content Network
The first drilling of the Messinian salt at the deeper parts of the Mediterranean Sea came in the summer of 1970, when geologists aboard the Glomar Challenger brought up drill cores containing arroyo gravels and red and green floodplain silts; and gypsum, anhydrite, rock salt, and various other evaporite minerals that often form from drying of ...
More than one million cubic kilometres of salt were deposited on the Mediterranean seabed, with salt deposits in some locations exceeding 3 km in thickness. This period, known as the Messinian Salinity Crisis (MSC), lasted around 640,000 years until a catastrophic flood through the Strait of Gibraltar. known as the Zanclean flood. After ...
The Messinian Erosional Crisis is a phase in the Messinian evolution of the central Mediterranean basin resulting from major drawdown of the Mediterranean seawater (the "Messinian Salinity Crisis"). As outlined in numerous studies, erosional events along the margins of the Mediterranean Basin during the Messinian timespan, before and during the ...
The Global Boundary Stratotype Section and Point for the Messinian is located in a section at Oued Akrech, near the Moroccan capital Rabat. [7] The top of the Messinian (the base of the Zanclean Stage and Pliocene Series) lies with the top of magnetic chronozone Cr3 (about 100,000 years before the Thvera normal subchronozone C3n.4n).
This triggered the Messinian Salinity Crisis with the formation of thick salt deposits on the former seafloor [7] and erosion of the continental slopes. [8] The Nile and Rhône carved deep canyons during this time. [4] Water levels in the Mediterranean during this time dropped by kilometres. [9]
The Prairie Evaporite Formation, also known as the Prairie Formation, is a geologic formation of Middle Devonian age that consists primarily of halite (rock salt) and other evaporite minerals. It is present beneath the plains of northern and eastern Alberta , southern Saskatchewan and southwestern Manitoba in Canada , [ 3 ] and it extends into ...
The evaporation (0:35 minutes) produced the storage of large amounts of salt on the sea bottom (0:39 minutes). Presumably, during the period in which the level of the Mediterranean Sea was 1500-1200 meters lower than today, some mammals passed through Africa and Europe, through the present Gibraltar Strait.
en.wikipedia.org /wiki /Sea-level _curve Bilal U. Haq is a Pakistani-American geoscientist (and poet) who is currently affiliated with and divides his time between the Smithsonian Institution in Washington, DC, and Sorbonne University 's Institute of Earth Sciences in Paris, France.