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Timing of the Acadian Orogeny in northern New Hampshire

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Timing of the Acadian Orogeny in northern New Hampshire; 2000; Article; Journal; Journal of Geology; Eusden, Jr. , J. D.; Guzofski, C. A.; Robinson, A. C.; Tucker, R. D.

Summary

New U-Pb geochronology constrains the timing of the Acadian orogeny in the Central Maine Terrane of northern New Hampshire. Sixteen fractions of one to six grains each of zircon or monazite have been analyzed from six samples: (1) an early syntectonic diorite that records the onset of the Acadian, (2) a schist, a migmatite, and two granites that together record the peak of the Acadian; and (3) a postkinematic pluton that records the end of the Acadian. Zircon from the syntectonic Wamsutta Diorite gives a 207Pb/206Pb age of circa 408 Ma, the time at which the boundary between the deforming orogenic wedge and the foreland basin was in the vicinity of the Presidential Range. This age agrees well with the Emsian position of the northwest [...]

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Type Scheme Key
local-index unknown 70022943
local-pk unknown 70022943
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.1086/314396
series unknown Journal of Geology

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citationTypeArticle
journalJournal of Geology
languageEnglish
parts
typevolume
value108
typeissue
value2

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