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THE P-T-t HISTORY OF A BARROVIAN SEQUENCE IN DUTCHESS COUNTY, NEW YORK, AND THE ADJACENT PART OF CONNECTICUT

dc.contributor.advisorBrown, Michaelen_US
dc.contributor.advisorPiccoli, Philipen_US
dc.contributor.authorChen, Yanen_US
dc.date.accessioned2009-07-03T05:37:21Z
dc.date.available2009-07-03T05:37:21Z
dc.date.issued2009en_US
dc.identifier.urihttp://hdl.handle.net/1903/9321
dc.description.abstractThe P-T-t history of a Barrovian sequence in Dutchess County, New York and the adjacent part of Connecticut was studied. Using the average P-T mode in THERMOCALC, the following P-T results were calculated for the garnet, staurolite, kyanite and sillimanite-K-feldspar zones (1sigma uncertainties): 5.2±0.8 kbar, 570±12°C; 5.9±1.1 kbar, 557±12°C; 6.4±1.1 kbar, 600±29°C; and 7.4±1.4 kbar, 752±68°C, respectively. Phase equilibria modeling in the MnNCKFMASHTO system yields peak P-T results consistent with the average P-T results. Monazite ages were obtained for the garnet, staurolite, kyanite and sillimanite-K-feldspar zones (2 sigma uncertainties): 455±6 and 453±10 Ma; 451±9 and 438±8 Ma; 478±6, 431±4 and 425±8 Ma; 533±7 Ma, 507±6, 506±4 Ma and 472±5 Ma, respectively. These ages help to constrain the timing of the Taconic and Salinic orogenic events.en_US
dc.format.extent2254179 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.titleTHE P-T-t HISTORY OF A BARROVIAN SEQUENCE IN DUTCHESS COUNTY, NEW YORK, AND THE ADJACENT PART OF CONNECTICUTen_US
dc.typeThesisen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.contributor.departmentGeologyen_US
dc.subject.pqcontrolledGeologyen_US
dc.subject.pquncontrolledBarrovianen_US
dc.subject.pquncontrolledEPMAen_US
dc.subject.pquncontrolledGeochronologyen_US
dc.subject.pquncontrolledMonaziteen_US
dc.subject.pquncontrolledP-T-ten_US
dc.subject.pquncontrolledThermocalcen_US


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