scholarly journals Cambrian–early Ordovician volcanism across the South Armorican and Occitan domains of the Variscan Belt in France: Continental break-up and rifting of the northern Gondwana margin

2017 ◽  
Vol 8 (1) ◽  
pp. 25-64 ◽  
Author(s):  
André Pouclet ◽  
J. Javier Álvaro ◽  
Jacques-Marie Bardintzeff ◽  
Andrés Gil Imaz ◽  
Eric Monceret ◽  
...  
Keyword(s):  
Variscan Belt ◽  
The South ◽  
Early Ordovician ◽  
Gondwana Margin ◽  
Break Up

Neoproterozoic to Early Ordovician Evolution of the Paleo-Asian Ocean: Implications to the Break-up of Rodinia

2003 ◽  
Vol 6 (2) ◽  
pp. 143-159 ◽  
Author(s):  
Nikolay L. Dobretsov ◽  
Mikhail M. Buslov ◽  
Valery A. Vernikovsky
Keyword(s):  
Early Ordovician ◽  
Break Up

Tests of Priority

2018 ◽  
pp. 102-157
Author(s):  
David A. Bateman ◽  
Ira Katznelson ◽  
John S. Lapinski
Keyword(s):  
National Policy ◽  
Financial System ◽  
Economic Regulation ◽  
Market Regulation ◽  
The South ◽  
Common Cause ◽  
Interstate Commerce ◽  
Issue Area ◽  
Break Up ◽  
Legislative Institutions

This chapter examines how southern members of Congress balanced and selected among their contending priorities, how they sought to change legislative institutions to achieve their goals, and how their choices and actions shaped national policy in enduring ways. It examines southern lawmaking across three broad issues: revenue, economic regulation, and spending. In each issue area, the South hoped to achieve changes that would make policy more equitable across the country's regions. Each confronted the South with a set of unpalatable choices, options that the region's representatives ultimately were unable to reconcile. The chapter first looks at the politics of revenue, an issue on which southern Democrats had to make common cause with often unreliable northern allies. Then, it turns to market regulation and finance, particularly efforts to regulate interstate commerce, break up trusts, and establish a more locally responsive financial system. Finally, it considers national spending policies.

Chapter 14 Cambrian-Ordovician history

1997 ◽  
Vol 17 (1) ◽  
pp. 257-271 ◽  
Author(s):  
W. Brian Harland
Keyword(s):  
Late Ordovician ◽  
Early Cambrian ◽  
The South ◽  
Thermal Event ◽  
Early Ordovician

Cambrian-Ordovician history is well documented in Svalbard with late Early Cambrian faunas and a range of Ordovician faunas to provide a basis for correlation. Not so extensive as Vendian, the rocks crop out in four areas: (i) only slightly deformed strata in the youngest Hecla Hoek (Oslobreen) Group in northeastern Svalbard yield especially rich Early to Mid-Ordovician faunas, (ii) The Hornsundian Geosyncline in south Spitsbergen with more variable facies and tectonic complications also exhibits Early Cambrian and Canadian strata, (iii) The Bjornoya succession reveals a marked hiatus between Vendian and Early and Mid-Ordovician strata, (iv) In western Svalbard the lack of Cambrian and Early Ordovician strata marks a distinct Mid Ordovician tectono-thermal event to be followed by ?Late Ordovician and Early Silurian strata. Indeed the above four areas correspond to distinct terranes which, having different affinities especially with areas in Greenland, give evidence of relatively distant areas and environments of formation. Evidence of Cambro-Ordovician volcanism is not recorded.Figure 14.1 lists the successions in the four areas mentioned according to the classification of rock units as abstracted from chapters 6, 7, 8, 9, 10 and 11, where their regional settings may be found. The outcrops are plotted on Fig. 14.2. The northeastern Svalbard strata are separated by Hinlopenstretet. This waterway divides Ny Friesland and Olav V Land in Spitsbergen from northwestern Nordaustlandet and occupies a syncline, but the successions although differently named are essentially continuous. In southern Spitsbergen the fjord Hornsund separates the successions to the south in Sorkapp Land

U–Pb zircon ages (SHRIMP) for Cadomian and Early Ordovician magmatism in the Eastern Pyrenees: New insights into the pre-Variscan evolution of the northern Gondwana margin

2008 ◽  
Vol 461 (1-4) ◽  
pp. 228-239 ◽  
Author(s):  
Pedro Castiñeiras ◽  
Marina Navidad ◽  
Montserrat Liesa ◽  
Jordi Carreras ◽  
Josep M. Casas
Keyword(s):  
Early Ordovician ◽  
Eastern Pyrenees ◽  
Gondwana Margin ◽  
Ordovician Magmatism

Australasian Nature Photography 08

2011 ◽  
Author(s):  
Keyword(s):  
New Zealand ◽  
Technical Information ◽  
New Guinea ◽  
General Knowledge ◽  
South Australian Museum ◽  
The South ◽  
Natural Heritage ◽  
Australian Museum ◽  
Break Up

The bioregion of Australia, New Zealand, Antarctica and New Guinea possesses a unique natural heritage stretching back over 50 million years since the break-up of the great southern continent of Gondwanaland. The South Australian Museum focuses on enhancing a general knowledge of this extraordinary legacy by encouraging photography of the region’s nature and wilderness, and promoting an annual competition to find the Nature Photographer of the Year. Australasian Nature Photography: ANZANG Eighth Collection presents the finest photographs submitted to the competition. Each photograph is accompanied by technical information as well as anecdotes about how the picture was taken, which will stimulate yet further interest in the flora and fauna and their conservation in the region.

Magmatism and continental break-up in the South Atlantic: high precision40Ar-39Ar geochronology

1994 ◽  
Vol 121 (3-4) ◽  
pp. 333-348 ◽  
Author(s):  
Simon Turner ◽  
Marcel Regelous ◽  
Simon Kelley ◽  
Chris Hawkesworth ◽  
Marta Mantovani
Keyword(s):  
South Atlantic ◽  
The South ◽  
Break Up
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