Lower Permian

Lower Permian

[′lō·ər ′pər·mē·ən]
(geology)
The earliest epoch of the Permian period of geologic time, extending from about 275- to 260,000,000 years ago.
References in periodicals archive ?
The Lower Permian Haushi, being of Hercynian uncomformity.
An expert committee advised the Board of Far Vista about this high probability of oil reserves in exploring at least 4 new horizons from the Lower Permian to the Lower Devonian discharges in the south-western part of Chedty field.
The wings of these two taxa were considered to have synapomorphies of the Holometabola, although eventually these taxa were removed from the Holometabola for different reasons--Metropator because its affinities where shifted to a nonholometabolous group, and Fatjanoptera because of a change in date from Upper Carboniferous to Lower Permian based on subsequent stratigraphic correlations.
Cerro Agua Negra Formation: An Upper Carboniferous to Lower Permian age suite
Specific topics include Silurian-bearing terranes of Alaska, the significance of detrital zircons in Upper Devonian ocean-basin strata of the Sonora allochthon and Lower Permian synorogenic strata of Mina Mexico foredeep in central Sonora, and Late Triassic mixed carbonate-volcaniclastic facies of the Olds Ferry terrane in eastern Oregon and western Idaho.
Gilmoreichnus has been widely reported from the Lower Permian of southwestern North America: the Hermit Shale, Grand Canyon and the middle Earp Formation, Big Hatchet Mountains, New Mexico (Baird, in Zeller 1965) and from extensive collections from the Robledo Mountains of New Mexico (Haubold et al.
But all the Silurian, most of the Devonian and a major part of the Carboniferous and Lower Permian sequences are missing.
1) of the lowermost Kungurian, and the Lower Permian sections on the eastern slope of the northern Timan (northeastern part of the Russian Platform; Fig.
This 11,000' vertical well will test two targets in the Lower Permian and Pennsylvanian age rocks.
The fauna of grylloblattid insects (Grylloblattida) of the Lower Permian locality of Tshekarda.
Lower Permian colonial rugose corals, western and northwestern Pangaea; taxonomy and distribution.
These shales have sourced other minor occurrences in that region, including the surface seepages of the Hazro area, where the formation is a Lower Permian sandstone.