The Central Atlantic Magmatic Province. Insights From Fragments of Pangea. Volume 136. Geophysical Monograph Series

  • ID: 2489278
  • Book
  • 276 Pages
  • John Wiley and Sons Ltd
1 of 4

Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 136.

A singular event in Earth′s history occurred roughly 200 million years ago, as rifting of the largest and most recent supercontinent was joined by basaltic volcanism that formed the most extensive large igneous province (LIP) known. A profound and widespread mass extinction of terrestrial and marine genera occurred at about the same time, suggesting a causal link between the biological transitions of the Triassic–Jurassic boundary and massive volcanism. A series of stratigraphic, geochronologic, petrologic, tectonic, and geophysical studies have led to the identification of the dispersed remnants of this Central Atlantic Magmatic Province (CAMP) on the rifted margins of four continents. Current discoveries are generally interpreted to indicate that CAMP magmatism occurred in a relative and absolute interval of geologic time that was brief, and point to mechanisms of origin and global environmental effects. Because many of these discoveries have occurred within the past several years, in this monograph we summarize new observations and provide an up–to–date review of the province.

Note: Product cover images may vary from those shown
2 of 4

PrefaceWillis E. Hames, J. Gregory McHone, Paul R. Renne, and Carolyn Ruppel vii

IntroductionW. Hames, J. G. McHone, P. Renne, and C. Ruppel 1

Cyclo–, Magneto–, and Bio–Stratigraphic Constraints on the Duration of the CAMP Event and its
Relationship to the Triassic–Jurassic BoundaryPaul E. Olsen, Dennis V. Kent, Mohammed Et–Touhami, and John Puffer 7

Relative Timing of CAMP, Rifting, Continental Breakup, and Basin Inversion: Tectonic SignificanceRoy W. Schlische, Martha Oliver With jack, and Paul E. Olsen 33

Age Estimates of the Seaward–Dipping Volcanic Wedge, Earliest Oceanic Crust, and Earliest
Drift–Stage Sediments Along the North American Atlantic Continental MarginRichard N. Benson 61

Critical Evaluation of 40Ar/39Ar Ages for the Central Atlantic Magmatic Province: Timing,
Duration and Possible Migration of Magmatic CentersAjoy K. Baksi  77

The Central Atlantic Magmatic Province (CAMP) in Brazil: Petrology, Geochemistry, 40Ar/39Ar Ages,
Paleomagnetism, and Geodynamic ImplicationsAngelo De Min, Enzo M. Piccirillo, Andrea Marzoli, Giuliano Bellieni, Paul R. Renne, Marcia Ernesto, and Leila S. Marques 91

Paleomagnetic and Geochemical Constraints on the Timing and Duration of the
CAMP Activity in Northeastern BrazilM. Ernesto, G. Bellieni, E. M. Piccirillo, I. S. Marques, A. De Min, I. G Pacca, G. Martins, and, W. P. Macedo 129

A Reactivated Back–arc Source for CAMP MagmaJohn H. Puffer 151

Temporal Chemical Variations Within Lowermost Jurassic Tholeiitic Magmas
of the Central Atlantic Magmatic ProvinceVincent J. M. Salters, P. C. Ragland, W. E. Hames, K. Milla, and C. Ruppel 163

The Late Triassic–Early Jurassic Volcanism of Morocco and Portugal in the Framework
of the Central Atlantic Magmatic Province: An OverviewNasrrddine Youbi, Lfnia Tavares Martins, Jose Manuel Munha, Hassan Ibouh, Jose Madeira,El Houssaine Ait Chayeb, and Abdelmajid El Boukhari 179

The Northernmost CAMP: 40Ar/39Ar Age, Petrology and Sr–Nd–Pb Isotope Geochemistry
of the Kerforne Dike, Brittany, FranceFred Jourdan, Andrea Marzoli, Herve Bertrand, Michael Cosca, and Denis Fontignie 209

Magma Flow Pattern in the North Mountain Basalts of the 200 Ma CAMP Event:
Evidence From the Magnetic FabricRichard E. Ernst, Jelle Zeilinga de Boer, Peter Ludwig, and Taras Gapotchenko 227

Volatile Emissions From Central Atlantic Magmatic Province Basalts: Mass Assumptions
and Environmental ConsequencesJ. Gregory McHone 241

Volcanism of the Central Atlantic Magmatic Province as a Potential Driving Force
in the End–Triassic Mass ExtinctionJozsef Palfy 255

Note: Product cover images may vary from those shown
3 of 4

Loading
LOADING...

4 of 4
W. E. Hames
J. G. McHone
P. R. Renne
Carolyn Ruppel
Note: Product cover images may vary from those shown
5 of 4
Note: Product cover images may vary from those shown
Adroll
adroll