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Topic: Permian


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In the News (Wed 19 Sep 18)

  
  Palaeos Paleozoic: Permian: The Permian Period
The Permian period was named in 1841 by the geologist Murchison after a tour of Imperial Russia to include the "vast series of beds of marls, schists, limestones, sandstones, and conglomerates" that overlay the Carboniferous formations in the eastern part of the country.
The early Permian saw the continuation of the Carboniferous biomes, with polar tundra regions and warm wet tropical swamp forests.
During the Permian, the crocodile-bird lineage (Archosauromorpha) had not yet diverged from the lizard-snake (Lepidosauromorpha) clade.
www.palaeos.com /Paleozoic/Permian/Permian.htm   (1677 words)

  
  Permian - LoveToKnow 1911
Concerning the rocks classed as Permian in the central counties of England there exists some doubt, for recent work tends to show that the lower parts are clearly related to the Carboniferous rocks by their fossils; while there is little evidence to warrant the exclusion of the higher beds from the Trias.
Permian rocks of the Rothliegende type are scattered over a wide area in France, where the lower beds are usually conformable with the Coal Measures.
The evidence so far obtained indicates that in Permian times much of the land in the northern hemisphere was near the general sea-level, and that conditions of considerable aridity prevailed which involved the repeated isolation and evaporation of marine lagoons and land-locked seas.
www.1911encyclopedia.org /Permian   (2159 words)

  
 Spartanburg SC | GoUpstate.com | Spartanburg Herald-Journal   (Site not responding. Last check: )
Three general areas are especially noted for their Permian deposits: the Ural Mountains (where Perm itself is located), China, and the southwest of North America, where the Permian Basin in the U.S. state of Texas is so named because it has one of the thickest deposits of Permian rocks in the world.
Permian tetrapods consisted of temnospondyli, lepospondyli and batrachosaur amphibians and sauropsids and synapsid (pelycosaurs and therapsids) reptiles.
Early Permian terrestrial faunas were dominated by pelycosaurs and amphibians, the middle Permian by primitive therapsids such as the dinocephalia, and the late Permian by more advanced therapsids such as gorgonopsians and dicynodonts.
www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=Permian   (1117 words)

  
 The Permian
The Permian period lasted from 290 to 248 million years ago and was the last period of the Paleozoic Era.
The distinction between the Paleozoic and the Mesozoic is made at the end of the Permian in recognition of the largest mass extinction recorded in the history of life on Earth.
In all, the Permian was the last of the time for some organisms and a pivotal point for others, and life on earth was never the same again.
www.ucmp.berkeley.edu /permian/permian.html   (447 words)

  
 Permian period. The Columbia Encyclopedia, Sixth Edition. 2001-05
In the Lower Permian, sandy shales, sandstones, and thin limestones of the Dunkard formation (formerly called the Upper Barren measures) were deposited in the remaining submerged areas of West Virginia, Pennsylvania, and Ohio, but the continued rising of the land soon put an end to deposition.
In Europe, the Lower Permian, or Rotliegendes [red layers], was marked principally by erosion from the Paleozoic Alps of the Carboniferous into the low-lying land to the north; the formations are chiefly shale and sandstone, with some conglomerate and breccia.
The end of the Permian is marked in the fossil record by a mass extinction.
www.bartleby.com /65/pe/Permianp.html   (674 words)

  
 The Permian Period of the Paleozoic Era
The Permian period lasted from 286 to 245 million years ago and was the last period of the Paleozoic Era.
The distinction between the Paleozoic and the Mesozoic is made at the end of the Permian in recognition of the largest mass extinction recorded in the history of life on Earth.
In all, the Permian was the last of the time for some organisms and a pivotal point for others, and life on earth was never the same again.
www.science501.com /PTPermian.html   (681 words)

  
 Permian Summary   (Site not responding. Last check: )
Three general areas are especially noted for their Permian deposits: the Ural Mountains (where Perm itself is located), China, and the southwest of North America, where the Permian Basin in the U.S. state of Texas is so named because it has one of the thickest deposits of Permian rocks in the world.
Permian tetrapods consisted of temnospondyli, lepospondyli and batrachosaur amphibians and sauropsids and synapsid (pelycosaurs and therapsids) reptiles.
Early Permian terrestrial faunas were dominated by pelycosaurs and amphibians, the middle Permian by primitive therapsids such as the dinocephalia, and the late Permian by more advanced therapsids such as gorgonopsians and dicynodonts.
www.bookrags.com /Permian   (2234 words)

  
 Permian at AllExperts
Three general areas are especially noted for their Permian deposits: the Ural Mountains (where Perm itself is located), China, and the southwest of North America, where the Permian Basin in the U.S. state of Texas is so named because it has one of the thickest deposits of Permian rocks in the world.
Permian tetrapods consisted of temnospondyli, lepospondyli and batrachosaur amphibians and sauropsids and synapsid (pelycosaurs and therapsids) reptiles.
Early Permian terrestrial faunas were dominated by pelycosaurs and amphibians, the middle Permian by primitive therapsids such as the dinocephalia, and the late Permian by more advanced therapsids such as gorgonopsians and dicynodonts.
en.allexperts.com /e/p/pe/permian.htm   (1329 words)

  
 Odessa Permian High School Football Archive
Permian rallied from being down two touchdowns to start the fourth quarter and walked away from Grande Stadium with a 31-28 decision.
Permian answered late in the quarter as Shaquay Gant rambled 55 yards for a score to tie it at 7-7.
Permian regained control in the third quarter as Tate Smith threw for two scores and linebacker Irving Escobedo returned a fumble 67 yards for a TD.
www.mojoland.net /archive.htm   (2358 words)

  
 Palaeos Paleozoic: Permian: The Rotliegendes / Cisuralian (Early Permian) period
The Cisuralian is the Early Permian and covers about half of the Permian Period by current reckoning of the absolute dates.
A Permian reef (Artinskian of Texas), showing an abundance of sponges, rugose corals and brachiopods, a gastropod (left)), a spiny-shelled nautilid Cooperoceras (right foreground) and a smooth shelled ammonoid (center background).
In the Early Permian, the last refuge for some of the vertebrate taxa that were widespread in Devonian times was the marginal, possibly brackish or freshwater, environment.
www.palaeos.com /Paleozoic/Permian/Cisuralian.html   (409 words)

  
 Permian - Search Results - MSN Encarta
Permian Period, last division of the Paleozoic Era of the geologic time scale (Geology), spanning an interval from about 299 million to 251 million...
Texas of the Permian Basin, The University of
Texas of the Permian Basin, The University of, public, coeducational institution in Odessa, Texas, part of the University of Texas System.
encarta.msn.com /Permian.html   (127 words)

  
 Permian and Triassic HSU NHM
The Permian is the last Period in the Paleozoic Era, ending with the greatest mass extinction known in Earth's history.
Permian amphibians were generally large, unlike the salamander sized specimen of Branchiosaurus in this case.
The Permian extinction event was so severe that the flora and fauna of the Triassic is quite different than previously seen in the Paleozoic Era.
www.humboldt.edu /~storage/nhm/lifeThroughTime/Permian_Triassic.web/index.htm   (543 words)

  
 Access: Marks of Extinction
Rather it occurred much earlier—toward the end of the Permian period, which spanned 286 to 245 million years ago and immediately preceded the beginning of the Age of the Dinosaurs.
In the late Permian, most species, including perhaps 95 percent of all life in the oceans, simply ceased to be.
While not full-blown simulations of the Permian world—there are simply too few data for that—these models allow the scientists to explore the feasibility of various extinction scenarios.
access.ncsa.uiuc.edu /Stories/permian   (296 words)

  
 NMBGMR Staff - Peter Scholle - Guadalupe Mountains   (Site not responding. Last check: )
This deformation led to erosional exhumation of original Permian topography on the western margin of the region, widespread influx of meteoric waters with renewal of deep ground-water circulation, dissolution and/or replacement of Permian evaporites, and widespread cavern formation in limestones of the Guadalupe Mountains.
Permian sandstone units do not thin over the pisolite facies so that it is unlikely that this facies was itself an elevated barrier as required by caliche hypotheses thus a back-barrier seepage area fits the topographic constraints.
Likewise, the Permian facies suite of fore-reef debris, reef, back-reef rubble, near-back-reef skeletal sands and muds, islands, restricted lagoons, and finally supratidal deposits is remarkably similar to the general facies spectrum found in the Florida Keys-Florida Bay area (Ginsburg, 1964; Purdy, 1963).
geoinfo.nmt.edu /staff/scholle/guadalupe.html   (11226 words)

  
 Permian Introduction   (Site not responding. Last check: )
This is one of nine stage-length intervals of the Permian Period for which this level of global data compilation is available.
Permian rocks are well spaced over the Earth's surface, allowing for a good assessment of paleoclimate and paleoceanography.
Permian surface ocean watermasses have been reconstructed based on marine and nearby terrestrial climate-sensitive sediments.
pgap.uchicago.edu /Permintro2.html   (426 words)

  
 The Permian Extinction @ National Geographic Magazine   (Site not responding. Last check: )
She believes that the Permian extinction was caused by acid rain following a massive release of volcanic gases.
But the Permian detectives are faced with a host of suspects and not enough evidence to convict any of them.
The late Permian rocks we passed as we neared Lootsberg Pass capture the synapsids at the height of their reign.
www.nationalgeographic.com /ngm/0009/feature4/fulltext.html   (2206 words)

  
 Permian - Triassic - GCR block
Permian rocks occur widely in the British Isles, in a number of separate ancient depositional basins, from the Hebrides and west of Scotland, through the English Midlands, to Devon.
Sites of Permian and Triassic age important for fossils of fishes, amphibians, reptiles, mammals and arthropods were also selected independently for their own ‘Blocks’ in the GCR, owing to the relative rarity of fossils of this type.
Life had flourished essentially unchallenged during the Carboniferous and Permian periods: crinoids, corals, nautiloids, ammonoids and fishes diversified in the seas, and amphibians and mammal-like reptiles continued their invasion of the land.
www.jncc.gov.uk /earthheritage/gcrdb/GCRblock.asp?block=70   (1969 words)

  
 Permian Rocks   (Site not responding. Last check: )
The Permian Period, from 284 to 245 million years ago, is the youngest division of the Paleozoic Era.
During the Permian, most of the continents we know today were assembled into one enormous land mass called Pangaea.
The end of the Permian is marked by evidence of one of the largest mass exinctions Earth has ever experienced.
tapestry.usgs.gov /ages/permian.html   (110 words)

  
 Permian - Company News
Permian is pleased to be providing support to BAE Systems on the further development and testing of the ALR-2002 Radar Warning Receiver.
Permian was previously contracted to provide a range of enhancements to it's OTA suite after it was licensed by Defence in 2004.
Permian is pleased to be a member of the Sypaq team and looks forward to a continuing its association with Sypaq and Defence through this panel.
www.permian.com.au /news   (1643 words)

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