Book contents
- Frontmatter
- Contents
- List of contributors
- Preface
- 1 Major global change: framework for the modern world
- 2 Carboniferous-to-Triassic evolution of the Panthalassan margin in southern South America
- 3 Permian and Triassic geologic events in Sonora, northwestern Mexico
- 4 Advances in the correlation of the Permian
- 5 Examples of late Hercynian transtensional tectonics in the Southern Alps (Italy)
- 6 Succession of selected bioevents in the continental Permian of the Southern Alps (Italy): improvements in intrabasinal and interregional correlations
- 7 Permian chronostratigraphic subdivisions and events in China
- 8 Indosinian Tectogeny in the geological correlation of Vietnam and adjacent regions
- 9 Sitsa flora from the Permian of South Primorye
- 10 Late Permian bimodal volcanism in South Primorye
- 11 Syngenetic and epigenetic mineral deposits in Permian and Triassic sequences of the Primorye region
- 12 The mid-Permian: major changes in geology, environment, and faunas and some evolutionary implications
- 13 Variations in the disappearance patterns of rugosan corals in Tethys and their implications for environments at the end of the Permian
- 14 Fluctuations in pelagic environments near the Permian–Triassic boundary in the Mino-Tamba Terrane, southwest Japan
- 15 Late Changxingian ammonoids, bivalves, and brachiopods in South Primorye
- 16 Radiolaria from Permian–Triassic boundary beds in cherty deposits of Primorye (Sikhote-Alin)
- 17 Early Mesozoic magmatism in the Russian Far East
- 18 Transgressive conodont faunas of the early Triassic: an opportunity for correlation in the Tethys and the circum-Pacific
- 19 Triassic biostratigraphy and palaeobiogeography of East Asia
- 20 Classification and correlation of Triassic limestones in Sikhote-Alin on the basis of corals
- 21 Evolution of the platform elements of the conodont genus Metapolygnathus and their distribution in the Upper Triassic of Sikhote-Alin
- 22 Late Triassic North American halobiid bivalves: diversity trends and circum-Pacific correlations
- 23 Upper Triassic Chinle Group, Western United States: a nonmarine standard for late Triassic time
- 24 Otapirian Stage: its fauna and microflora
- 25 Upper Palaeozoic glaciation and Carboniferous and Permian faunal changes in Argentina
- Index
6 - Succession of selected bioevents in the continental Permian of the Southern Alps (Italy): improvements in intrabasinal and interregional correlations
Published online by Cambridge University Press: 13 October 2009
- Frontmatter
- Contents
- List of contributors
- Preface
- 1 Major global change: framework for the modern world
- 2 Carboniferous-to-Triassic evolution of the Panthalassan margin in southern South America
- 3 Permian and Triassic geologic events in Sonora, northwestern Mexico
- 4 Advances in the correlation of the Permian
- 5 Examples of late Hercynian transtensional tectonics in the Southern Alps (Italy)
- 6 Succession of selected bioevents in the continental Permian of the Southern Alps (Italy): improvements in intrabasinal and interregional correlations
- 7 Permian chronostratigraphic subdivisions and events in China
- 8 Indosinian Tectogeny in the geological correlation of Vietnam and adjacent regions
- 9 Sitsa flora from the Permian of South Primorye
- 10 Late Permian bimodal volcanism in South Primorye
- 11 Syngenetic and epigenetic mineral deposits in Permian and Triassic sequences of the Primorye region
- 12 The mid-Permian: major changes in geology, environment, and faunas and some evolutionary implications
- 13 Variations in the disappearance patterns of rugosan corals in Tethys and their implications for environments at the end of the Permian
- 14 Fluctuations in pelagic environments near the Permian–Triassic boundary in the Mino-Tamba Terrane, southwest Japan
- 15 Late Changxingian ammonoids, bivalves, and brachiopods in South Primorye
- 16 Radiolaria from Permian–Triassic boundary beds in cherty deposits of Primorye (Sikhote-Alin)
- 17 Early Mesozoic magmatism in the Russian Far East
- 18 Transgressive conodont faunas of the early Triassic: an opportunity for correlation in the Tethys and the circum-Pacific
- 19 Triassic biostratigraphy and palaeobiogeography of East Asia
- 20 Classification and correlation of Triassic limestones in Sikhote-Alin on the basis of corals
- 21 Evolution of the platform elements of the conodont genus Metapolygnathus and their distribution in the Upper Triassic of Sikhote-Alin
- 22 Late Triassic North American halobiid bivalves: diversity trends and circum-Pacific correlations
- 23 Upper Triassic Chinle Group, Western United States: a nonmarine standard for late Triassic time
- 24 Otapirian Stage: its fauna and microflora
- 25 Upper Palaeozoic glaciation and Carboniferous and Permian faunal changes in Argentina
- Index
Summary
It is well known that determinations of stratigraphic subdivisions and, especially, correlations of continental sediments often are hampered, even on the regional scale, by discontinuities in sedimentary strata, whose rates of sedimentation often were highly variable and discontinuous, and by the fact that there had been episodic palaeogeographic and environmental control of pull-apart basins, where floras and faunas could vary because of differing ecological situations. Virtually all of those obstacles can be bypassed by using “unconformity-bounded stratigraphic units” (NASC, 1983) in an intrabasinal lithostratigraphic district. Unfortunately, when considering interregional correlations, chronostratigraphic and geochronologic units must be used. These “high-level” units, in turn, need to have clearly defined stratigraphic limits (boundaries), and their fossil contents should already have been well studied and illustrated. These are recommendations from the International Stratigraphic Guide (ISG) (Hedberg, 1976). However, we rarely find ourselves working under conditions that allow full compliance with the ISG recommendations.
At present, our difficulties in chronostratigraphic correlations of continental Permian sediments have resulted from several causes: (1) The primary cause is their discontinuous depositional settings; (2) The second cause is that their biologic contents are not always completely known, having been poorly studied or poorly illustrated; (3) A third problem arises because of confused and unclear chronostratigraphical utilization over hundreds of years; (4) The stratotypes of the boundaries often have not been exactly defined, probably because the boundaries do not crop out at the type localities. In conclusion, the use of any chronostratigraphic unit in the continental Permian is still confusing.
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- Publisher: Cambridge University PressPrint publication year: 1997
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