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Table of Contents - Memoir 191 The Nature of Magmatism in the Appalachian Orogen
Preface		v
Acknowledgments		vii
1.	The Northeast Kingdom batholith, Vermont: Geochronology and Nd, O, Pb, and Sr isotopic constraints on the origin of Acadian granitic rocks Joseph G. Arth and Robert A. Ayuso	1
2.	The Spruce Head composite pluton: An example of mafic to silicic Salinian magmatism in coastal Maine, northern Appalachians Robert A. Ayuso and Joseph G. Arth	19
3.	Late Precambrian plutons in the Avalon terrane of New Brunswick, Nova Scotia, and Newfoundland Sandra M. Barr and Andrew Kerr	45
4.	Geochemistry and petrogenesis of tonalite dikes in the Smith River allochthon, south-central Virginia James S. Beard	75
5.	Fractionation and contamination of Maquereau Group lavas, southern Gaspé, Québec Appalachians Jean H. Bédard and Caroline Wilson	87
6.	Late Devonian mafic-felsic magmatism in the Meguma Zone, Nova Scotia D. Barrie Clarke, Michael A. MacDonald, and Marcus C. Tate	107
7.	Rift and ocean floor volcanism from the Late Proterozoic and early Paleozoic of the Vermont Appalachians R. A. Coish	129
8.	Igneous petrogenesis and tectonic setting of granitic rocks from the eastern Blue Ridge and Inner Piedmont Alabama Appalachians Mark S. Drummond, Michael J. Neilson, David T. Allison, and James R Tull	147
9.	ND and SR isotopic characterization of crystalline rocks from the southern Appalachian Piedmont and Blue Ridge, North and South Carolina Paul D. Fullagar, Steven A. Goldberg, and J. Robert Butler	165
10.	Age and origin of the Austell Gneiss, western Georgia Piedmont-Blue Ridge, and its bearing on the ages of orogenic events in the southern Appalachians Michael W. Higgins, Joseph G. Arth, Joseph L. Wooden, Thomas J. Crawford, Thomas W. Stem, and Ralph F. Crawford	181
11.	Space-time composition relationships among Appalachian-cycle plutonic suites in Newfoundland Andrew Kerr	193
12.	Concord plutonic suite: Pre-Acadian gabbro-syenite intrusions in the southern Appalachians Harry Y McSween, Jr., and Ralph P. Harvey	221
13.	Low-potassium, trondhjemitic to granodioritic plutonism in the eastern Blue Ridge, southwestern North Carolina-northeastern Georgia C.F. Miller, Paul D. Fullagar, T. W. Sando, S. A. Kish, G. C. Solomon, G. S. Russell, and L. F. Wood Steltenpohl	235
14.	Tectonic influence on Late Proterozoic Avalonian magmatism: An example from the Greendale complex, Antigonish Highlands, Nova Scotia, Canada J. Brendan Murphy, Andrew J. Hynes, and Brian Cousens	255
15.	Igneous and metamorphic U-Pb zircon ages from the Baltimore mafic complex, Maryland Piedmont A. Krishna Sinha, Barry B. Hanan, and David M. Wayne	275
16.	Elemental composition of the Alleghanian granitoid plutons of the southern Appalachians J. Alexander Speer and Kevin Hoff	287
17.	Chemical variation in plutonic rocks caused by residual melt migration: Implications for granite petrogenesis LeeAnn Srogi and Timothy M. Lutz	309
18.	Magmatic and tectonic evolution of the Cambrian-Ordovician Laurentian margin of Iapetus: Geochemical and isotopic constraints from the Notre Dame subzone, Newfoundland H. Scott Swinden, G. A. Jenner, and Z. A. Szybinski	337
19.	Implications of granitoid geochemical and isotopic (ND, 0, Pb) data from the Cambrian-Ordovician Notre Dame arc for the evolution of the Central Mobile belt, Newfoundland Appalachians Joseph B. Whalen, George A. Jenner, Frederick J. Longstaffe, Clément Gariépy, and Brian J. Fryer	367
20.	The Cadillac Mountain intrusive complex, Maine: The role of shallow-level magma chamber processes in the generation of A-type granites Robert A. Wiebe, Jonathan B. Holden, Michelle L. Coombs, Reinhard A. Wobus, Kathleen J. Schuh, and Benjamin P. Plummer	397
Index		419

Table of Contents - Memoir 191

The Nature of Magmatism in the Appalachian Orogen