dinantian การใช้

• The Dinantian is named for the Belgian city and province of Dinant where strata of this age occur.
• Geologically, the law is a volcanic plug of hard phonolitic trachyte rock of Carboniferous ( Dinantian ) age.
• It is practically equivalent to the " Dinantian " of Albert Auguste de Lapparent and Ernest Munier-Chalmas ( 1893 ).
• The oldest rocks are Lower Carboniferous limestones of Dinantian age, which form the core of the White Peak within the Peak District National Park.
• Lower Carboniferous Drybrook Sandstone lies under the conglomerates and there is a significant collection of late Dinantian fossil plants visible ( ten different species ).
• In the west of the county, outcrops of Dinantian limestones are found in the river valleys, while the upland areas are underlain by the younger Namurian Millstone Grit Series.
• Ebbor Gorge lies on the southwest-facing slope of the Mendip Hills and consists of a steep-sided ravine cut into 350-million-year-old Carboniferous Limestone of the Dinantian.
• The sequence of Dinantian volcanic rocks, about thick, lying to the south of the St George s Land landmass, and also because of the submarine character of the lavas and their intimate relationship with adjacent carbonate sediments.
• The Dinantian is equal to the lower part of the correlates with the Avonian, a name proposed by British geologist Arthur Vaughan ( 1905; p . 264 ) for certain deposits of the Lower Carboniferous system in the Avon Gorge at Bristol.