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Putnam-Nashoba Terrane

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Journal Article
Journal: GSA Bulletin
Published: 01 February 1999
GSA Bulletin (1999) 111 (2): 240-253.
...Martin Acaster; M. E. Bickford Abstract The Nashoba Block, the northern portion of the Putnam-Nashoba terrane, is a fault-bounded fragment of Late Proterozoic to early Paleozoic crust located in eastern Massachusetts. The Marlboro and Nashoba gneisses of the Putnam-Nashoba terrane are composed...
Series: GSA Special Papers
Published: 01 January 1990
DOI: 10.1130/SPE245-p171
...-sillimanite-muscovite-biotite-plagioclase-quartz schist and biotite-hornblende-plagioclase-quartz gneiss. These units correlate with the Yantic and Lower members, respectively, of the Tatnic Hill Formation, included in the Putnam-Nashoba terrane in eastern Connecticut. The rocks below 815 m in the Moodus...
Series: GSA Special Papers
Published: 01 January 1990
DOI: 10.1130/SPE245-p187
... Major-element chemical analyses of 130 samples of high-grade plagioclase gneiss, together with geologic data, suggest that metadacitic gneisses of the late Proterozoic Avalon and Putnam-Nashoba terranes include four extrusive and two intrusive units formerly mapped as Monson Gneiss...
Series: GSA Special Papers
Published: 01 January 1993
DOI: 10.1130/SPE275-p1
... Trough belt is in fault contact with the Putnam-Nashoba belt to the southeast. The latter shows mainly a Taconian metamorphism and extensive intrusion of granites; clear evidence for Acadian orogenic effects in the Putnam-Nashoba belt is lacking. In Newfoundland the main orogeny appears to be Silurian...
Series: GSA Special Papers
Published: 01 January 1990
DOI: 10.1130/SPE245-p209
... and lithostratigraphic units. We find no compelling evidence that schistose Putnam-Nashoba rocks exist within the Avalon terrane. On the contrary, we interpret these blastomylonitic schists and gneisses within the Avalon terrane around the Lyme dome as ductile fault rocks, derived from an Avalonian granodioritic...
Series: GSA Special Papers
Published: 01 January 1989
DOI: 10.1130/SPE230-p193
..., and Massabesic gneisses), the Hope Valley gneisses show evidence of late Paleozoic deformation and metamorphism. Although these rocks have been thought to share much of their history with overlying metasedimentary sequences (the Kearsarge–Central Maine synclinorium, Merrimack trough, and PutnamNashoba zone...
Journal Article
Journal: Lithosphere
Published: 01 December 2009
Lithosphere (2009) 1 (6): 337-342.
... : Geological Society of America Memoir 146 , p . 31 – 70 . Acaster M. Bickford M.E. 1999 , Geochronology and geochemistry of Putnam-Nashoba terrane metavolcanic and plutonic rocks, eastern Massachusetts: Constraints on the early Paleozoic evolution of eastern North America : Geological...
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Journal Article
Published: 26 August 2008
Canadian Journal of Earth Sciences (2008) 45 (7): 815-825.
... consisting of quartz–epidote, epidote–chlorite–quartz, quartz–carbonate, and chlorite–white mica–carbonate–zeolite minerals. References Acaster M. Bickford M.E. 1999 Geochronology and geochemistry of PutnamNashoba terrane metavolcanic and plutonic rocks, eastern Massachusetts...
FIGURES
Journal Article
Published: 01 November 2018
American Mineralogist (2018) 103 (11): 1851-1868.
... are UHT ( Ague et al. 2013 ; Axler and Ague 2015a ; based on geologic maps of Rodgers 1981 , 1985 ). HB = Hartford Basin, RH = Rowe-Hawley, P-N = Putnam-Nashoba. (Color online.) Figure 2. Field exposures of the silica-undersaturated rocks. Grt = garnet. ( a ) Sheared leucosome; arrows...
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Image
Geologic map showing ( a ) Major geologic <b>terranes</b> of New England, U.S.A., ...
Published: 01 November 2018
in red are UHT ( Ague et al. 2013 ; Axler and Ague 2015a ; based on geologic maps of Rodgers 1981 , 1985 ). HB = Hartford Basin, RH = Rowe-Hawley, P-N = Putnam-Nashoba. (Color online.)
Journal Article
Published: 17 March 2014
Canadian Journal of Earth Sciences (2014) 51 (5): 485-499.
..., these terranes include Rowe-Hawley, Shelburne Falls, Connecticut Valley, Bronson Hill, Central Maine, Merrimack, Putnam-Nashoba, and Gander/Avalon (both of Gondwanan affinity) ( Fig. 1 ). In central-western New England, autochthonous Mesoproterozoic basement and associated cover sequence rocks of Laurentian (i.e...
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Series: GSA Memoirs
Published: 11 September 2017
DOI: 10.1130/2017.1213(13)
EISBN: 9780813782133
... component of the Cat Square terrane detrital zircon suite in the Carolinas. Peri-Gondwanan Neoproterozoic to Cambrian Avalon–Carolina superterrane rocks are nowhere in contact with the Brevard fault zone at present erosion level. While these far-traveled metasedimentary and granitoid horses may have...
FIGURES
Journal Article
Published: 24 November 2011
Canadian Journal of Earth Sciences (2011) 49 (1): 239-258.
... portrayed both as a northwest-vergent thrust ( Stewart et al. 1993 ; West et al. 1995 ; Hibbard et al. 2006 ) and a southeast-side-down normal fault ( Tucker et al. 2001 ). In Massachusetts, the Clinton–Newbury Fault ( Fig. 1 ) juxtaposes the Merrimack trough with the Nashoba terrane, a belt of Lower...
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Journal Article
Published: 01 October 2015
American Mineralogist (2015) 100 (10): 2254-2271.
... crop out in the southern end of the Central Maine Terrane and thus are a part of the Acadian/Neoacadian Orogen. The typical mineral assemblage is garnet + sillimanite + K-feldspar + plagioclase + quartz + cordierite + biotite ± spinel. The sillimanite is commonly pseudomorphous after kyanite...
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Journal Article
Journal: GSA Bulletin
Published: 01 January 2010
GSA Bulletin (2010) 122 (1-2): 76-88.
... terranes modified from Potter et al. (2008) . TABLE A1. COMPLETE U-Pb DATE ERRORS FOR ALKALIC IGNEOUS ROCKS AT NAHANT REFERENCES CITED Acaster M. Bickford M.E. 1999 , Geochronology and geochemistry of Putnam-Nashoba terrane metavolcanic and plutonic rocks, eastern...
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Journal Article
Published: 01 July 2016
The Canadian Mineralogist (2016) 54 (4): 945-969.
... (of inferred peri-Laurentian origin, Dorais et al . 2008 ), and the Massabesic Gneiss and the Putnam-Nashoba belt or terrane (of the peri-Gondwanan Ganderia terrane, Pollock et al . 2011 , Dorais et al . 2012 ). The eastern part of the map area is underlain by the peri-Gondwanan Avalon terrane, which...
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Journal Article
Journal: Economic Geology
Published: 01 June 2007
Economic Geology (2007) 102 (4): 763-775.
... building blocks of the northern and the southern Appalachian orogen— James P. Hibbard, Cees R. Van Staal, and Douglas W. Rankin 23 Shrimp U-Pb evidence for a Late Silurian age of metasedimentary rocks in the Merrimack and Putnam-Nashoba terranes, eastern New England— R.P. Wintsch, J.N. Aleinikoff, G.J...