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eastern Vermont

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Journal Article
Journal: Geology
Published: 01 February 1989
Geology (1989) 17 (2): 181-184.
...Frank S. Spear; T. Mark Harrison Abstract 40 Ar/ 39 Ar geochronology on hornblendes from central New England reveals a Grenvillian cooling age (1026 ±12 Ma) along the eastern margin of the Green Mountain massif, Acadian ages in east-central Vermont (350-397 Ma) and along the Bronson Hill...
Journal Article
Published: 01 June 1974
American Mineralogist (1974) 59 (5-6): 558-562.
Journal Article
Journal: GSA Bulletin
Published: 01 July 1958
GSA Bulletin (1958) 69 (7): 855-870.
...) in eastern Vermont contains tetracorals of Silurian or Devonian age. The Clough Formation on Croydon Mountain (sillimanite zone) in west-central New Hampshire contains tetracorals. The fossiliferous zone in the lower part of the Bernardston Formation is possibly equivalent to the upper part of the Clough...
Series: GSA Memoirs
Published: 01 January 1969
DOI: 10.1130/MEM120-p1
... upright. The folds are also nearly upright in eastern Vermont, New Hampshire, and neighboring areas The orientation of the axial surfaces of the folds changes gradually to subparallel with the flanks and tops of the domes and arches as the latter are approached. The folds in the northwestern part...
Journal Article
Journal: GSA Bulletin
Published: 01 May 1953
GSA Bulletin (1953) 64 (5): 509-538.
...ROBERT J BEAN Abstract A total of 1,111 gravity stations were occupied in a rectangular area approximately 137 miles long and 23 miles wide in eastern New York, central Vermont, and central New Hampshire. The survey was carried out for the primary purpose of supplementing geologic data...
Journal Article
Journal: GSA Bulletin
Published: 01 February 1961
GSA Bulletin (1961) 72 (2): 293-338.
... Trenton unconformity at the margin of the Taconic sequence south of the Castleton area. The Taconic sequence probably was deposited in the area of the present Green Mountains. The upper part of the Mount Hamilton group correlates by fossils with the Moretown-Cram Hill formations of eastern Vermont...
Journal Article
Journal: GSA Bulletin
Published: 01 May 1980
GSA Bulletin (1980) 91 (5): 282-286.
...GEORGE W. FISHER; PAUL KARABINOS Abstract The stratigraphic sequence of the Gile Mountain and Waits River Formations, two major Silurian-Devonian lithostratigraphic units in eastern Vermont, has long been controversial. This uncertainty has given rise to numerous difficulties in interpreting...
Journal Article
Journal: GSA Bulletin
Published: 01 May 1960
GSA Bulletin (1960) 71 (5): 531-576.
... Mountain anticlinorium, in eastern Vermont and adjacent New Hampshire and along the international boundary between Quebec and Maine. Two contrasting intergradational lithic assemblages, the graywacke-shale assemblage and the carbonate-quartzite assemblage, characterize the protolith of the bedded rocks...
Journal Article
Journal: GSA Bulletin
Published: 13 February 2019
GSA Bulletin (2019) 131 (7-8): 1295-1311.
..., the western, mostly undeformed part of the foreland, which is underlain by Upper Paleozoic clastic and carbonate rocks; (2) the Valley and Ridge Province, which consists of Lower Paleozoic clastic and carbonate rock in the eastern, deformed part of the foreland, where they are folded into elongate synclines...
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Journal Article
Journal: GSA Bulletin
Published: 01 August 1977
GSA Bulletin (1977) 88 (8): 1111-1123.
...BERTRAM G. WOODLAND Abstract Structural analysis of Silurian-Devonian schists of the Waits River and Gile Mountain Formations in the Royalton area, Vermont, provides clear evidence of three Acadian deformational phases and polymetamorphism. Structurally, the Royalton area lies within...
Journal Article
Journal: GSA Bulletin
Published: 01 October 1979
GSA Bulletin (1979) 90 (10_Part_II): 1628-1643.
...R. A. Rich Abstract Fluid inclusions were studied in some 300 samples of quartz, taken from quartz pods, lenses, and veins occurring in the biotite, garnet, and staurolite-kyanite zones of metamorphosed Paleozoic and Pre-cambrian rocks in eastern Vermont. Most of the samples were taken from...
Journal Article
Published: 01 February 1968
Canadian Journal of Earth Sciences (1968) 5 (1): 49-59.
... of this structure during the Silurian Period and Early Devonian Epoch. Local recrystallization and consequent loss of argon from the Taconic slates also occurred during this time. Ages obtained from a variety of metamorphic rocks from eastern Vermont fall in a narrow range (345 ± 7 m.y), indicating that renewed...
Series: GSA Memoirs
Published: 11 September 2017
DOI: 10.1130/2017.1213(08)
EISBN: 9780813782133
... inclusions in garnet porphyroblasts from the Strafford Dome, eastern Vermont, have homogeneous Ti concentrations ([Ti]) that differ from matrix quartz, which retains a history of Si-liberating metamorphic reactions and fluid influx. We applied growth-composition models to evaluate potential processes...
FIGURES | View All (10)
Journal Article
Published: 01 October 1996
American Mineralogist (1996) 81 (9-10): 1208-1216.
...Jibamitra Ganguly; Sumit Chakraborty; Thomas G. Sharp; Douglas Rumble Abstract We have determined the concentration profiles across the interface of a natural gametgamet couple in a biotite-grade rock from eastern Vermont. The couple consists of a grossular-spessartine garnet that had formed during...
Journal Article
Journal: GSA Bulletin
Published: 01 November 1963
GSA Bulletin (1963) 74 (11): 1313-1334.
..., and the southern limit an area in northwestern Georgia. Thus Appalachia during this time is reconstructed as a narrow, elongate island or archipelago extending from Quebec to Georgia. A brachiopod (Howellella sp.) from the Shaw Mountain Formation of eastern Vermont indicates an age of C 3 to early Gedinnian...
Journal Article
Journal: GSA Bulletin
Published: 01 September 2013
GSA Bulletin (2013) 125 (9-10): 1539-1553.
... of these samples: a commercial (SPEX) carrier for the first six samples and a low 10 Be/ 9 Be beryl carrier made at the University of Vermont for all subsequent samples. We added ∼250 µg of 9 Be to each sample as a spike (see GSA Data Repository 1 ). In order to ensure that enough Al was present...
FIGURES | View All (14)
Journal Article
Journal: GSA Bulletin
Published: 01 January 2013
GSA Bulletin (2013) 125 (1-2): 201-215.
... the ridgeline and basin-averaged erosion rates, which is prerequisite to understanding large-scale landscape change on millennial time scales. The central Appalachian Mountains are a dominant physiographic feature inland of eastern North America’s Atlantic passive margin. This linear mountain chain...
FIGURES | View All (10)
Journal Article
Journal: Geology
Published: 07 June 2018
Geology (2018) 46 (7): 635-638.
.... The Fortymile River flows from eastern Alaska in the United States to the Yukon River in Canada across a tectonically quiescent region with near-uniform precipitation and bedrock erosivity. We exploit these stable boundary conditions to quantify bedrock incision evident in a gravel-capped strath terrace...
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Journal Article
Journal: GSA Bulletin
Published: 01 August 2000
GSA Bulletin (2000) 112 (8): 1296-1312.
...Kimberly A. Marsella; Paul R. Bierman; P. Thompson Davis; Marc W. Caffee Abstract A chronology for the Last Glacial Maximum based on cosmogenic exposure dating in the Pangnirtung Fjord area, eastern Baffin Island, Arctic Canada, is at odds with many decades of land-based, glacial stratigraphic...
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Journal Article
Journal: Geology
Published: 01 February 2003
Geology (2003) 31 (2): 155-158.
... Foundation grant EAR-9628599. We thank T. Kirchof and B. Wemple for geographic information system assistance. This paper benefited from reviews by D. Granger, F. Pazzaglia, and the University of Vermont 2002 critical writing class. References Ahnert , F. , 1970 , Functional relationships...
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