\pˈɜːmi͡ən], \pˈɜːmiən], \p_ˈɜː_m_iə_n]\
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In geol. a term applied to a system of rocks lying beneath the triassic rocks, and immediately above the carboniferous system. Formerly the Permian and triassic rocks were grouped together under the name of the new red sandstone system, but later geologists have separated them on palae ontological grounds, the Permian group containing many palaeozoic forms, while the remains of the triassic are largely mesozoic. The Permian forms the upper most of the great palaeozoic series, and is unconformable in England on the carboniferous, while it passes by almost insensible gradations into the triassie. In England the Permian rocks are largely developed in the country of Durham. Called also MAGNESIAN LIMESTONE.
By Daniel Lyons
By Nuttall, P.Austin.
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