Results 231 to 240 of about 49,248 (280)
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Geological Society, London, Memoirs, 1992
Abstract "The Triassic rocks of Great Britain, if one may judge from statements in the textbooks, are among the simplest of our deposits; but a closer inspection reveals a number of very difficult and intensely interesting problems hidden behind this apparent simplicity." L. J. Wills, 1910.
G. Warrington, H. C. Ivimey-Cook
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Abstract "The Triassic rocks of Great Britain, if one may judge from statements in the textbooks, are among the simplest of our deposits; but a closer inspection reveals a number of very difficult and intensely interesting problems hidden behind this apparent simplicity." L. J. Wills, 1910.
G. Warrington, H. C. Ivimey-Cook
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1994
Abstract The Triassic Pangaea was indented by a wedge shaped Tethyan Ocean spanning tropical and subtropical areas, with the Antarctic and Siberian Platform located in southern and northern high latitudes respectively. Configuration of the eastern Tethys is modified in this chapter on the basis of new data from palaeomagnetic ...
Yin Hongfu, Lin Qiuxian
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Abstract The Triassic Pangaea was indented by a wedge shaped Tethyan Ocean spanning tropical and subtropical areas, with the Antarctic and Siberian Platform located in southern and northern high latitudes respectively. Configuration of the eastern Tethys is modified in this chapter on the basis of new data from palaeomagnetic ...
Yin Hongfu, Lin Qiuxian
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Permo-Triassic boundary and Lower to Middle Triassic in South Tibet
Journal of Asian Earth Sciences, 1998Abstract The abundance of conodonts increases sharply across the Permian/Triassic boundary in South Tibet, and as a consequence Griesbachian assemblages are much better defined than Changxingian ones. The “ Otoceras latilobatum bed”, representing the base of the Triassic at Selong, is a condensed biocalcirudite including abundant macrofossils ...
GARZANTI E., NICORA A., RETTORI R.
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Triassic and permo-triassic palaeomagnetic data for S. America
Earth and Planetary Science Letters, 1970Abstract Palaeomagnetic studies have been made on 13 different rock formations. Results from 7 of these to which thermal or A.F. cleaning has been applied show that the south palaeomagnetic pole relative to S. America was situated at 82°S, 154°W with alpha95 = 8°.
K.M. Creer +2 more
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Biogeography of Triassic Ammonoids
2015Ammonoids nearly died out during the Permian-Triassic (PT) mass extinction (~ 252 Ma), but quickly and rather impressively recovered in less than ~ 1.5 myr during the Early Triassic (Tozer 1981a; Brayard et al. 2009a; Brayard and Bucher 2015; Fig. 7.1).
Brayard, Arnaud +4 more
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Geological Journal, 1988
AbstractIn general, Triassic rocks throughout the studied areas are dominated by limestones locally containing foraminifers and conodonts. Interbedded terrigenous clastics are present in the Lower Triassic wherever it occurs, but otherwise are restricted to the Upper Triassic sections of Hadim. The Lower‐Middle Triassic rocks of Hadim were deposited in
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AbstractIn general, Triassic rocks throughout the studied areas are dominated by limestones locally containing foraminifers and conodonts. Interbedded terrigenous clastics are present in the Lower Triassic wherever it occurs, but otherwise are restricted to the Upper Triassic sections of Hadim. The Lower‐Middle Triassic rocks of Hadim were deposited in
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Biostratigraphy of Triassic Ammonoids
2015The Triassic is a turning point in the evolutionary history of ammonoids, characterized by the flourishing Ceratitida and the appearance of the first heteromorphs. Following the end-Permian mass extinction, ammonoids were among the first groups to rediversify by producing many new taxa.
Jenks, James F. +4 more
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1993
Abstract Triassic rocks of the Interior Platform and eastern Cordillera of Canada have long been recognized as an interesting and variable sequence of marine strata occupying an elongate belt that extends from the United States border on the south to 69°N latitude and Beaufort Sea on the north (Fig. 4G.1, 4G.2).
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Abstract Triassic rocks of the Interior Platform and eastern Cordillera of Canada have long been recognized as an interesting and variable sequence of marine strata occupying an elongate belt that extends from the United States border on the south to 69°N latitude and Beaufort Sea on the north (Fig. 4G.1, 4G.2).
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Facies, 2003
Except of the Nakhlak and Aghdarband regions, Lower and Middle Triassic strata in Iran consist almost exclusively of carbonate rocks built on vast platforms along the shelves of the Paleo- and Neotethys. The depositional environments varied from shallow shelf sea to lagoonal and near-shore tidal flats, becoming even evaporitic towards the coastal ...
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Except of the Nakhlak and Aghdarband regions, Lower and Middle Triassic strata in Iran consist almost exclusively of carbonate rocks built on vast platforms along the shelves of the Paleo- and Neotethys. The depositional environments varied from shallow shelf sea to lagoonal and near-shore tidal flats, becoming even evaporitic towards the coastal ...
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