Neoproterozoic magmatism in the Suwannee Terrane: Implications for terrane correlation

The Grenville orogenic cycle of southern Laurentia: Unraveling sutures, rifts, and shear zones as potential piercing points for Amazonia

“…Significant new geochronologic and isotopic studies in the Grenvillian massifs of the Appalachians (e.g., Aleinikoff et al, 1996Aleinikoff et al, , 2000Aleinikoff et al, , 2004Bream et al, 2004;Hatcher et al, 2004;Heatherington et al, 1996;Owens and Samson, 2004;Ownby et al, 2004;Pettingill et al, 1984;Sinha et al, 1996;Tollo et al, 2004aTollo et al, ,b, 2006, and in the Adirondacks and New England massifs (e.g., Alcock et al, 2004;Hamiton et al, 2004;McLelland et al, 2004;Sinha and McLelland, 1999;Walsh et al, 2004) during the last two decades, have focused on the similarities between the Adirondacks and Appalachian massifs. These studies show that they shared Grenvillian magmatic, deformational, and metamorphic events during the Shawinigan, Ottawan, and Rigolet phases of Grenvillian orogenesis.…”

“…Confirmation of a suture between the West African craton and Laurentia ( Fig. 3) came with determination of ages of subsurface crystalline rocks in cores recovered from beneath the Coastal Plain in northern Florida (e.g., Heatherington et al, 1996Mueller et al, 1994;Mueller, 1999, 2003). The cover sedimentary rocks are not metamorphosed and crystalline rocks are lithologically similar to rocks of the same age in West Africa (e.g., Dallmeyer, 1987).…”

Neoproterozoic?Early Paleozoic evolution of peri-Gondwanan terranes: implications for Laurentia-Gondwana connections

“…In the eastern United States, terranes with a related tectonothermal history include those of the Florida and Carolina (e.g. Heatherington et al 1996;Hibbard 2000;Hibbard et al 2002). In central and western Europe, Neoproterozoic-Early Paleozoic basement, collectively referred to as Cadomian, is preserved in several massifs including the Saxo-Thuringian and Tepla-Barrandian zones of the Bohemian Massif (e.g.…”

“…625 and ca. 550 Ma granitoid rocks with 1.1-1.2 Ga inherited zircons that suggest a crustal basement of Grenville affinity (Heatherington et al 1996).…”

New insights on proterozoic tectonics and sedimentation along the peri-Gondwanan West African margin based on zircon U–Pb SHRIMP geochronology

“…The southern portion of New Brunswick records detrital zircon ages of 2.6 Ga, 2.0-1.9 Ga, 1.8 Ga, 1.6-1.5 Ga, 1.3 Ga and 1.2-1.0 Ga (Keppie and Dostal, 1998) compatible with ages of the Amazonian Craton and mimicking detrital zircon populations in the Marampa Group. Inherited zircon in granitoid rocks of Florida range from 1.2-1.1 Ga giving a Stenian age for the crustal basement (Heatherington et al, 1996). Carolina is composed entirely of late Neoproterozoic rocks, and has a much younger history.…”