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Book Chapter

Jurassic

By
Grzegorz Pieńkowski
Grzegorz Pieńkowski
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Michael E. Schudack
Michael E. Schudack
(co-ordinators)
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Pavel Bosák
Pavel Bosák
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Raymond Enay
Raymond Enay
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Anna Feldman-Olszewska
Anna Feldman-Olszewska
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Jan Golonka
Jan Golonka
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Jacek Gutowski
Jacek Gutowski
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G. F. W. Herngreen
G. F. W. Herngreen
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Peter Jordan
Peter Jordan
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Michał Krobicki
Michał Krobicki
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Bernard Lathuiliere
Bernard Lathuiliere
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Reinhold R. Leinfelder
Reinhold R. Leinfelder
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Jozef Michalík
Jozef Michalík
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Eckhard Mönnig
Eckhard Mönnig
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Nanna Noe-Nygaard
Nanna Noe-Nygaard
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Jòzsef Pálfy
Jòzsef Pálfy
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Anna Pint
Anna Pint
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Michael W. Rasser
Michael W. Rasser
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Achim G. Reisdorf
Achim G. Reisdorf
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Dieter U. Schmid
Dieter U. Schmid
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Günter Schweigert
Günter Schweigert
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Finn Surlyk
Finn Surlyk
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Andreas Wetzel
Andreas Wetzel
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Theo E. Wong
Theo E. Wong
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Published:
January 01, 2008

Abstract

The Jurassic System (199.6-145.5 Ma; Gradstein et al. 2004), the second of three systems constituting the Mesozoic era, was established in Central Europe about 200 years ago. It takes its name from the Jura Mountains of eastern France and northernmost Switzerland. The term ‘Jura Kalkstein’ was introduced by Alexander von Humboldt as early as 1799 to describe a series of carbonate shelf deposits exposed in the Jura mountains. Alexander Brongniart (1829) first used the term ‘Jurassique', while Leopold von Buch (1839) established a three-fold subdivision for the Jurassic (Lias, Dogger, Malm). This three-fold subdivision (which also uses the terms black Jura, brown Jura, white Jura) remained until recent times as three series (Lower, Middle, Upper Jurassic), although the respective boundaries have been grossly redefined. The immense wealth of fossils, particularly ammonites, in the Jurassic strata of Britain, France, Germany and Switzerland was an inspiration for the development of modern concepts of biostratigraphy, chronostratigraphy, correlation and palaeogeography. In a series of works, Alcide d'Orbigny (1842-51, 1852) distinguished stages of which seven are used today (although none of them has retained its original strati graphic range). Albert Oppel (1856-1858) developed a sequence of such divisions for the entire Jurassic System, crucially using the units in the sense of time divisions.

During the nineteenth and twentieth centuries many additional stage names were proposed - more than 120 were listed by Arkell (1956). It is due to Arkell's influence that most of these have been abandoned and the table of current stages for the Jurassic (comprising 11 internationally accepted stages, grouped into three series) shows only two changes from that used by Arkell: separation of the Aalenian from the lower Bajocian was accepted by international agreement during the second Luxembourg Jurassic Colloquium in 1967, and the Tithonian was accepted as the Global Standard for the uppermost stage in preference to Portlandian and Volgian by vote of the Jurassic Subcommission (Morton 1974, 2005). As a result, the international hierarchical subdivision of the Jurassic System into series and stages has been stable for many years.

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Contents

Geological Society, London, Geology of Series

The Geology of Central Europe Volume 2: Mesozoic and Cenozoic

Geological Society of London
Volume
2
ISBN electronic:
9781862393899
Publication date:
January 01, 2008

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