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New Jersey
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New York
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sedimentary rocks
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GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
Ti resetting in quartz during dynamic recrystallization: Mechanisms and significance Available to Purchase
Single-crystal 40 Ar/ 39 Ar age variation in muscovite of the Gassetts Schist and associated gneiss, Vermont Appalachians Available to Purchase
Preface to collected papers on monazite microprobe geochronology Available to Purchase
The Appalachian peri-Gondwanan realm: a palaeogeographical perspective from the south Available to Purchase
Abstract The Appalachian peri-Gondwanan realm (APGR) is an extensive tract of exotic Neoproterozoic-early Palaeozoic crustal blocks that occupies the eastern flank of the orogen. Traditionally, southern APGR elements have been correlated with those of the northern Appalachians on the basis of gross geological similarities. Most palaeogeographical reconstructions of the APGR are based on data from the northern Appalachians; consequently in these reconstructions, southern APGR elements are viewed commonly either as being affiliated spatially with those of the north or ignored. However, emerging data from two southern Appalachian crustal blocks give new insights into the palaeo- geography of the APGR. The Smith River allochthon may be a part of the APGR on the basis of recently obtained U-Pb monazite and staurolite ages that are apparently incompatible with a Laurentian origin. The allochthon and possibly adjacent terranes, appear to have followed a palaeogeographical track independent of other APGR elements. The Carolina zone is recognized as peri-Gondwanan in origin on the basis of its (i) gross geological evolution, (ii) fossil fauna and (iii) tectonic history. Mid-Palaeozoic regional kinematic patterns suggest that Carolina and its commonly held northern counterpart, the Avalon zone, travelled together on the same lithospheric plate, but their contrasting tectonic histories suggest that they formed along different margins of this plate. These interpretations lead to a new model for middle Palaeozoic interactions of the APGR with Laurentia.
Manganoan kinoshitalite in Mn-rich marble and skarn from Virginia Available to Purchase
Smith River allochthon: A southern Appalachian peri-Gondwanan terrane emplaced directly on Laurentia? Available to Purchase
Spinels and other oxides in Mn-rich rocks from the Hutter Mine, Pittsylvania County, Virginia, U.S.A.: Implications for miscibility and solvus relations among jacobsite, galaxite, and magnetite Available to Purchase
Ba-rich micas from the Franklin Marble, Lime Crest and Sterling Hill, New Jersey Available to Purchase
Petrology of orthoamphibole-cordierite gneisses from the Orijärvi area, southwest Finland Available to Purchase
Phase equilibria and thermobarometry of metapelites Free
Phase equilibria and thermobarometry of calcareous, ultramafic and mafic rocks, and iron formations Free
Postmetamorphic unroofing history deduced from petrology, fluid inclusions, thermochronometry, and thermal modeling: An example from southwestern New England Available to Purchase
Igneous and contact metamorphic rocks of the Cortlandt Complex, Westchester County, New York Available to Purchase
Location The Cortlandt Complex is located in northern Westchester County, New York, just south and east of the city of Peekskill onthe east bank of the Hudson (Fig. 1). The site is about a one-hourdrive north of New York City; principal access routes from thesouth are U.S. 9 and the Taconic State Parkway. The complexcomprises about 25 mi2 (65 km2) of exposure (Fig. 2) and has aroughly elliptical shape, elongated east-west. Individual localitieswithin the overall site are indicated in Figures 1 and 2, and willbe described in detail below. Stop 1 is in the Popolopen Lake 7½-minute Quadrangle and is located some miles west of Peekstill. It may be reached bytaking U.S. 6 west from Peekskill to Cranberry Hill, about 2 mi (3.2 km) east of the intersection of U.S. 6 and I-84. As a startingpoint of the trip, it may also be reached by taking the U.S. 6 (east) exit on I-84. Stop 2, in the Peekskill Quadrangle, is reached by taking Welcher Avenue (U.S. 9A) south from Peekskill to the town of Buchanan. Turn right onto Tate Street, then bear right at a smalltraffic circle onto Westchester Avenue. Turn right at Buchanan Town Hall and park. Stop 3 is in the Ossining Quadrangle take New York 129 east from U.S. 9 in Croton-on-Hudson for about 2.5 mi (4 km), then turn north (left) on Croton Avenue before crossingthe bridge over the Croton Reservoir. About 0.3 mi (0.5 km) north on Croton Avenue, stop at an abandoned quarry on theleft.