Multiple sclerosis (MS) is an unpredictable, often disabling disease of the central nervous system that disrupts the flow of information within the brain, and between the brain and body.
The Laramide orogeny was a period of mountain building in western North America, which started in the Late Cretaceous, 70 to 80 million years ago, and ended 35 to 55 million years ago. The exact duration and ages of beginning and end of the orogeny are in dispute.welve kilometers of structural relief between basins and adjacent uplifts is not uncommon. The basins contain several thousand meters of Paleozoic and Mesozoic sedimentary rocks that predate the Laramide orogeny. As much as 5000 m of Cretaceous and Cenozoic sediments filled these orogenically defined basins.
The Triassic /traÉªËaesÉªk/ traÉªËÃ¦sÉªk is a geologic period and system that extends from roughly 250 to 200 (mya.252 Â± 17.0 06 to.201 Â± 3.0 2 million years), ago an interval of.51 04 million. Years it is the first period of The Mesozoic, era and lies between The permian And jurassic. periodso coal deposits date from the start of the Triassic period. This is known as the coal gap and can be seen as part of the PermianâTriassic extinction event. Sharp drops in sea level at the time of the Permo Triassic boundary may be the proper explanation for the coal gap.