 | | Journal (article/letter/editorial) | | GRAND, ISLE: L Jirrwowwux/ lot* llMt UK* U'A VERMONT Mineral Locality Index VANDALL T. K I N G P.O....Massachusetts 01776 MASSACHUSETTS Figure J. Vermont political divisions map; adapted from U.S. Geological...of New Hampshire and Vermont (1972). 324 ROCKS & MINERALS he state of Vermont is relatively small,...ry in the world is in Rochester (Windsor Co.), Vermont. Min eral products mined "as is" for their final...maintained. (The disuse of cobblestone roads prevents Vermont from being a giant mining state today, but in the |  | | Report (issue) | | Geologic Map of the Vermont Part of the 7.5 x 15 Minute Bellows Falls Quadrangle, Windham and Windsor Counties...Counties, Vermont By Thomas R. Armstrong1 Open-File Report OF 97-284 1997 This report is preliminary...Virginia INTRODUCTION Bedrock in the Vermont part of the Bellows Falls quadrangle consists of Silurian and...others, 1993b), and the 1961 State Geologic Map of Vermont (Doll and others, 1961). Previous models regarding...Putney Volcanics or Gile Mountain Formation of the Vermont sequence, and Littleton Formation of the New Hampshire |  | | Report (issue) | | GEOLOGIST ON THE MINERAL INDUSTRIES AND GEOLOGY OF VERMONT 1929-1930 SEVENTEENTH OF THIS SERIES GEORGE H...H. PERKINS State Geologist STAFF OF THE VERMONT GEOLOGICAL SURVEY 1929-1930 GEORGE H. PEinuNs, State...University of Vermont. ELBRIDGE C. JACOBS, Assistant CONTENTS Geologist, University of Vermont. CHARLES...PHYSIOGRAPHY OF VERMONT, G. H. PERKINS ..................... THE aEOLOGY OF VERMONT OCHER DEPOSITS,...107 MOUNT MONADNOCK III VERMONT, J. E. Worr ................... LIST OF VERMONT MINERALS, G. H. PERKINS |  | | Field Trip Notes | | Appalachian Highlands of East-Central New York, Southern Vermont, and Southern New Hampshire Field Trip No. 2,...APPALACHIAN HIGHLANDS OF EAST-CENTRAL NEW YORK, SOUTHERN VERMONT, AND SOUTHERN NEW HAMPSHIRE By Marland P. Billings...East-central New York and parts of western Vermont 7 Southern Vermont Ik Southern New Hampshire 23 Itineraries:...East-central New York and southwestern Vermont South-central and southeastern Vermont Southern New Hampshire 46...structure section of east-central New York, southern Vermont and southern New Hampshire In pocket TABLES Table |  | | Journal (article/letter/editorial) | | pressure fields; the remaining two members, sillimanite and andalusite, are also familiar to many collectors...Cr, Fe, Mg, Ca, and K. It is a member of the sillimanite group and is trimorphous (having the same chemical...but a different structure) with andalusite and sillimanite. Kyanite is widely distributed in gneisses and...psuedomorphs of kyanite after andalusite and sillimanite are known from scattered locations. There are...cm long with staurolite in quartz at Windham, Cumberland County, Maine. Blue-bladed crystals to 2.5 cm |  | | Journal (article/letter/editorial) | | Metamorphism: Rangeley Formation, New Hampshire, USA MATTHEW J. KOHN1∗, FRANK S. SPEAR2 AND JOHN W. VALLEY1...GEOPHYSICS, UNIVERSITY OF WISCONSIN, MADISON, WI 53706, USA 2 DEPARTMENT OF EARTH AND ENVIRONMENTAL SCIENCES...RENSSELAER POLYTECHNIC INSTITUTE, TROY, NY 12180, USA RECEIVED SEPTEMBER 3, 1996 REVISED TYPESCRIPT ACCEPTED...Rangeley Formation in southwestern New Hampshire, USA. Evidence for in situ melting includes: (1) the consistency...slow diffusion rates (garnet, staurolite, and sillimanite). This infiltration may ∗Corresponding author |  | | Journal (article/letter/editorial) | | Department of Geology, Middlebury College,Middlebury, Vermont 05753, U.S.A. AssrRAcr The nappe theory in the...were metamorphosedto the chlorite zone through sillimanite-orthoclase zone. Some of these units proved to...to be fossiliferous even in the sillimanite zone. Early on, a relationship was recognizedbetweenhigh...the so-called pit rock, even into rocks of the sillimanite zone, coupled with ample collections and diligent...crosssectionofthe regionaroundSkitchewaugMountain,Vermont,from Thompson's1954guidebook article.For key to |  | | Report (volume) | | Selected Bibliography of Andalusite, Kyanite Sillimanite, Dumortierite Topaz, and Pyrophyllite in the... Selected Bibliography of Andalusite, Kyanite Sillimanite, Dumortierite Topaz, and Pyrophyllite in the...______-____________________________________ -________ Sillimanite _ _________________________________________________...SELECTED BIBLIOGRAPHY OF ANDALUSITE, KYANITE SILLIMANITE, DUMORTIERITE, TOPAZ, AND PYROPHYLLITE IN THE...compilation of 566 references on the kyanite, or sillimanite, group of minerals and pyrophyllite to December |  | | Report (chapter) | | a high-grade gneiss from western New Hampshire, USA. The P - T paths computed from relative thermometry...on schists from east-central Vermont and westcentral New Hampshire, USA. The P - T paths computed from...staurolite + biotite schists from east-central Vermont taken from Spear & Rumble (1986a,b) and unpublished...Fall Mountain, Bellows Falls quadrangle, western New Hampshire, contain second-sillimanite-grade assemblages...apatite and locally K-feldspar or muscovite and sillimanite. The rims of the garnets have welldeveloped reaction |  | | Journal (article/letter/editorial) | | investigation Study areas Owlshead Peak White Mountains Vermont-New Hampshire Experiments with color Discussion...California 3. Sample location and description, Vermont-New Hampshire study Figure 1. Index and locality...Mountain study area, California 887 5. Index map of Vermont-New Hampshire sample localities 889 6. Zircon grain...grain size vs. zircon alpha activity for Vermont-New Hampshire samples . . . . 896 7. Zircon alpha activity...White Mountains study . . . 4. Zircon data for Vermont-New Hampshire study 886 888 890 893 tially resorbed |  | | Journal (article/letter/editorial) | | pages 361-376, 1995 Petrology of the regional sillimanite zone,west-centralNew Hampshire, U.S.A., with...New York 12180, U.S.A. Ansrugr Sillimanite from the regional sillimanite zone in west-centralNew Hampshire...(nappe stage) of earlier mica foliation. Regional sillimanite zone samples show no evidence for earlier staurolite...reaction garnet + chlorite + muscovite + quartz: sillimanite + biotite + HrO. The pressureat which this reaction...evidencein the sillimanite zone rocks that staurolite was a precursor to sillimanite parageneses. Bulk |  | SPEAR, F. S., CHENEY, J. T., PYLE, J. M., HARRISON, T. M., LAYNE, G. (2008) Monazite geochronology in central New England: evidence for a fundamental terrane boundary. Journal of Metamorphic Geology, 26 (3) 317-329 doi:10.1111/j.1525-1314.2007.00751.x | Journal (article/letter/editorial) | | 12180, USA (spearf@rpi.edu) 2 Department of Geology, Amherst College, Amherst, MA 01002, USA 3 Department...University of California, Los Angeles, CA 90095-1567, USA 4 Department of Geology and Geophysics, Woods Hole...Hole Oceanographic Institute, Woods Hole, MA 02543, USA ABSTRACT Monazite crystallization ages have been...in western New Hampshire is continuous with the Vermont sequence to the west. Rocks of the Big Staurolite...metamorphic series were juxtaposed against rocks of the Vermont series during the Alleghanian. Key words: geochronology; |  | | Journal (article/letter/editorial) | | (YPO4)-bearing metapelites from central New England, USA. The [Y]Grt decreases roughly two orders of magnitude...Rensselaer Polytechnic Institute, Troy, NY12180, USA Editorial responsibility: K.V. Hodges Thirteen xenotime-bearing...modal%) than in higher-grade (staurolite-zone or sillimanite-zone) samples (maximum 0.1 modal%). Xenotime...Xenotime inclusions in garnet core, sample BF-78 (sillimanite zone). b Matrix xenotime, sample 93-19A (garnet...garnet-zone garnet (1000 ppm Y), rT = 4 °C; sillimanite-zone garnet (150 ppm Y), rT = 40 °C. Thus, |  | | Journal (article/letter/editorial) | | to a sequence of rocks that crop out along the Vermont-New Hampshire border (see Fig. 1). It is bounded...A N D D . R U M B L E III LEGEND / j ' 0 ^ ^ Vermont New Hampshire Border Sample Location Faults \~y-\\...map of west-central New Hampshire and adjacent Vermont depicting the general geology of the Orfordville...shown are G = garnet, St = staurolite, and Si = sillimanite. Sample locations are shown with dots, towns...Orfordville Formation from maps of the Claremont and Bellows Falls quadrangles by correlating the Post Pond volcanic |  | | Journal (article/letter/editorial) | | represent all grades of metamorphism from shales to sillimanite schists and gneisses. The average concentrations...fossiliferous shales near the Connecticut River to sillimanite gneisses in the White Mountains and beyond. Samples...slate 1^ mi. N.W. East Haverhill station L29 Sillimanite garnet 1 mi. S.E. West Rumney gneiss P.O. L31...L39 Banded sillimanite Jefferson Notch road, Y± gneiss mi. N. of BM 2049 L40 Sillimanite schist }'a mi...Dolly Copp road and Pinkham Notch highway L41 Sillimanite gneiss y% mi. S. Glen House L42 Pseudo-andalusite |  | | Journal (article/letter/editorial) | | of low-grade Clough Formation near Springfield, Vermont. Fossiliferous layer contains broken shell fragments...(figure 2; Springfield, Vermont) and in moderately to very high-grade (sillimanite) metamorphic rocks (figure...same rock is at very high metamorphic grade (sillimanite-grade mica schist) and has yielded the same brachiopod...northern New Hampshire and the length of eastern Vermont as the Gile Mountain Formation, where, at higher...Paleozoic fossils from central Massachusetts, eastern Vermont, and western New Hampshire. Geol. Soc. Amer. Bull |  | | Journal (article/letter/editorial) | | Rensselaer Polytechnic Institute, Troy, NY 12180 USA Journal Pre-proof Abstract Metamorphic P–T paths...Orfordville Belt (Vermont), Townshend Dam (Vermont), the re Connecticut Valley Trough (Vermont), and Sifnos...Rensselaer Polytechnic Institute, Troy, NY 12180 USA na Keywords: Inclusion barometry; QuiG barometry;...Orfordville Belt (Vermont), Townshend Dam (Vermont), the re Connecticut Valley Trough (Vermont), and Sifnos...minerals (staurolite, kyanite, andalusite and of sillimanite) from the Kwoiek contact aureole in British Columbia |  | | Journal (article/letter/editorial) | | this belt of rocks consists of well-bedded mica-sillimanite schist and quartzite. To the east the rocks of...8—Claremont, 9—Sunapee, 10—Mt. Kearsarge, 11—Bellows Falls, 12—Lovewell Mtn., 13—Keene, and 14—Monadnock...quartz conglomerate, mica schist, and locally sillimanite schist. The quartzite is composed essentially...Clough formation west of Northville, considerable sillimanite occurs in the schist. Here the rock shows a pronounced...Biotite, in addition to quartz, muscovite, and sillimanite, is an essential mineral in these rocks. The |  | | Journal (article/letter/editorial) | | formation in chlorite and biotite-grade phyllites, SE Vermont C. K. MCWILLIAMS,1 R. P. WINTSCH1 AND M. J. KUNK2...47405, USA (ckmcwill@indiana.edu) 2 United States Geological Survey, MS 926A, Reston, VA 20192, USA ABSTRACT...phyllosilicates in crenulated phyllites from south-eastern Vermont show that grain-scale zoning is common, and sympathetic...belts of rocks, the Connecticut Valley series (Vermont series), the Central Maine terrane (New Hampshire...in the Ordovician Alstead and Keene domes. The Vermont series consists of Silurian and Devonian metasedimentary |  | KOHN, M. J., ORANGE, D. L., SPEAR, F. S., RUMBLE, D., HARRISON, T. M. (1992) Pressure, Temperature, and Structural Evolution of West-Central New Hampshire: Hot Thrusts over Cold Basement. Journal of Petrology, 33 (3) 521-556 doi:10.1093/petrology/33.3.521 | Journal (article/letter/editorial) | | = Garnet; St = staurolite; K = kyanite; Si = sillimanite; OA = Orfordville anticlinorium; HS = Hardscrabble...Orfordville anticlinorium to the west and to sillimanite-Kfeldspar grade east of the Bronson Hill anticlinorium...Fig. 1), and 13 analyses of zircons from the Bellows Falls Pluton [BF-14; location in Spear et al. (1990a)]...nearby schists, in which growth of fibrolitic sillimanite postdates formation of abundant kyanite and staurolite...observed along strike in the Littleton and Bellows Falls quadrangles to the north and south as well as |  | | Journal (article/letter/editorial) | | .......................................... Bellows Falls area..........................................curves of seismic waves in Bethlehem gneiss at Bellows Falls localities. 3. Type of record of seismic reflections...4. Geological cross sections of Mascoma and Bellows Falls plutons....................... Plate Page .................... 633 2. Geological map of Bellows Falls pluton........................................A = Mascoma basin of Bethlehem gneiss; B = Bellows Falls basin of Bethlehem gneiss. Based upon published |  | | Journal (article/letter/editorial) | | metavolcanic rocks and marbles collected throughout Vermont. Excluding dolomite-bearing samples, AQC tends...given isograd in southern Vermont are higher than those in northern Vermont, possibly due to a regional...Quartz-magnetite fractionations in rocks from Vermont, New Hampshire, and Maine decrease with increasing...metamorphic terrane of New England, centering on Vermont. Quartzcalcite assemblages from various rock types...Taylor and others (1963) on Mt. Grant, Addison County, Vermont. Taylor and others found 518O of each phase |  | | Book | | of Saratoga in Now York, by Doct. John H. Steel. county A (Steel.') 1822." (N. G.) " New Farmer and...Epidote, and Argillaceous Oxide of Iron, at Rumford Falls, (J. P.) PARKER'S ISLAND. (In the Kennebeck.)...Pyritous Copper. Red Oxide of Iron. (N. G.) BELLOWS FALLS. Staurotide, near, in drgillite. Finite, near...of iron is found at Jamaica, Vt. and not at Bellows Falls. (Sil. 3.232.J BRENTWOOD. in masses of Sulphur...quartz, very beautiful. (Prof. Dewolf.) HAMPTON FALLS. Amethyst, in rolled pieces. (C.) HANOVER. Precious |  | BILLINGS, MARLAND P., CHAPMAN, CARLETON A., CHAPMAN, RANDOLPH W., FOWLER-BILLINGS, KATHARINE, LOOMIS, FREDERIC B. (1946) GEOLOGY OF THE MT. WASHINGTON QUADRANGLE, NEW HAMPSHIRE. Geological Society of America Bulletin, 57 (3) 261 doi:10.1130/0016-7606(1946)57[261:gotmwq]2.0.co;2 | Journal (article/letter/editorial) | | metamorphism, and such minerals as andalusite, sillimanite, staurolite, garnet, tourmaline, actinolite,...high grade, and such minerals as andalusite, sillimanite, garnet, staurolite, mica, tourmaline, actinolite... p. 921-923, Fig. 10). This was followed by sillimanite and garnet, and still later by staurolite and...developed in the Littleton formation in the Bellows Falls quadrangle (Kruger, 1946) and Monadnock quadrangle...lithology. The interbedded quartzites and coarse sillimanite schists of the Littleton formation hold up most |  | | Report (issue) | | Rowe-Hawley Zone By ROLFE S. STANLEY, UNIVERSITY OF VERMONT, and NORMAN L. HATCH, Jr., U.S. GEOLOGICAL SURVEY...Photographs of the Collinsville Formation, Shelburne Falls dome..............................................Stanley, Department of Geology, University of Vermont, Burlington, VT 05405. formations but penetrate...Mountain-equivalent rocks (Rodgers, 1985). In Vermont the west edge of the RoweHawley zone is drawn along...Formation as shown on the Centennial Geologic Map of Vermont (Doll and others, 1961). The pre-Silurian basement |
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