 | | Report (issue) | | deposits in the Glens Falls 1° x 2° quadrangle, New York, Vermont, and New Hampshire by J.F. Slack-i/...16-19, 1986. The Glens Falls 1° x 2° quadrangle (New York-Vermont-New Hampshire) is one of a number of...and related geology of the Glens Falls 1° x 2" quadrangle. Because of time limitations, only representative...geologic maps are available for most of the stops in Vermont and New Hampshire, which are published (commonly...at 15-Minute scale) as part of bulletins of the Vermont Geological Survey, and, in New Hampshire, with |  | | Journal (article/letter/editorial) | | MassachusettsInstituteof Technology,Cambridge,Massachusetts02139, USA Abstract. The exchange equilibrium between plagioclase...localities in the metamorphosed Post Pond Volcanics, New Hampshire and Vermont; and (2) analyses from numerous...numerous literature sources. The first of the Post Pond Volcanics localities is a roadcut along U.S. Route...Route 5 in the south-west corner of the Mt. Cube Quadrangle, Vt. Phase relations of the amphibolites and data...second location is from a quarry on Mt. Finish, Hanover Quadrangle, Vermont. The rocks here are primarily felsic |  | | Journal (article/letter/editorial) | | Institute of Technology, Cambridge, Massachusetts 02139, USA Abstract. Equilibria between plagioclase, calcic...calc-silicates from the Ammonoosuc and Post Pond Volcanics, New Hampshire and Vermont, and the Littleton Formation...middle garnet-oligoclase zone come from a quarry on Mt. Finish near Lebanon, New Hampshire and have been...the staurolite isograd come from the Ammonoosuc Volcanics on the north and west flank of the Mascoma dome...this locality is slightly higher than that of the Mt. Finish Quarry, these two areas are believed to represent |  | | Journal (article/letter/editorial) | | staurolite-kyanite zone amphibolites in the Mt. Cube quadrangle, Vermont. The amphibolites there contain lowvariance...are similar to the amphibolites in the Mt. Cube quadrangle, Vermont (Spear, 1982) in metamorphic grade and...mineral assemblages from the Uvete area and Mt. Cube quadrangle. GEOLOGICAL SETTING AND CONDITIONS OF METAMORPHISM...+ + + + sph ~~ + rut + + + + + + il + + mt + + py Abbreviations: qtz = quartz; pl = plagioclase;...scapolite; sph = sphene; rut = rutile; il = ilmenite; mt = magnetite; py = pyrite. 9 10 11 12 13 14 a 5 |  | | Journal (article/letter/editorial) | | metamorphicconditions;(b) TEM observationsof coexisting andesine(An3e)and bytownite (Anes);and (c) TEM and cry...assemblage shouldproducean equilibriumoligoclase/andesine and growth. Intermediatecompositionsare interpreted...temperatureestimateis from Rumble et al. (1982). The Thetford, Vermont temperarure ls found in Spear(1980,1981).The Augusta(Femy...equilibrium at 390"Cwould involve pi, Cl disordered andesine and Cl ordered albite. (a) This variant treats...1979) and in mafic volcanic rocks near Thetford, Vermont, metamorphosed at P - 5500 bars, T: 535ot20oC(Spear |  | | Journal (article/letter/editorial) | | Infiltration-Driven Metamorphism in Northern New England, USA by JOHN M. FERRY (Received 30 November 1987; revised...the Ammonoosuc Volcanics which crop out over an area of ~ 20 000 km2 in eastern Vermont and western New...from the state geologic maps of New Hampshire and Vermont (Billings, 1956; Doll et al, 1961) as well as more...formation is retained in this report. The Ammonoosuc Volcanics are Ordovician in stratigraphic age and are composed...sulfide-rich shale. Other map units such as the Post Pond Volcanics member of the Orfordville Formation (Lyons |  | | Journal (article/letter/editorial) | | varieties and are generally composed of hornblende, andesine, quartz, epidote, opaques, _+garnet, +_clinopyroxene...of amphibolites from teh Post Pond Volcanics, Mt. Cube quadrangle, Vermont. J. Petrol., 23, 383-426. |  | Mottana, A., Bocchio, R., Crespi, R., De Capitani, L., Liborio, G., Della Ventura, G. (1994) Cummingtonite in the amphibolites of the South-Alpine basement complex (upper Lake Como region, Italy): Its relationships with hornblende. Mineralogy and Petrology, 51 (1) 67-84 doi:10.1007/bf01164915 | Journal (article/letter/editorial) | | sliding equilibrium, by partially replacing the pair andesine plus hornblende. However, this evidence is somewhat...(oligoclase: Kisch and Warnaars, 1969; oligoclase/andesine: Hoinkes and Mogessie, 1986; labradorite/bytownite:...(Kisch and Warnaars, 1969) and at the oligoclase/andesine boundary at Schneeberg, Austria (Hoinkes and Mogessie...squares: Schneeberg, Austria, with oligoclase/andesine (Hoinkes and Mogessie, 1986); triangles: NE Scotland...for the Cam-Cum pairs associated with oligoclase/andesine of Schneeberg (Hoinkes and Mogessie, 1986: 0.58) |  | | Journal (article/letter/editorial) | | amphibolites are not retrograde eclogites, since andesine was present throughout the metamorphic history...margin of the Appalachians from Newfoundland to Vermont (Fig. 1) (Williams and Talkington 1977; Laurent...containing equigranular idioblastic to granoblastic andesine (pl) with some quartz, Fe-Ti oxides, hornblende...sodic rims (Table 6); both albite (An < 10) and andesine inclusions have been found in garnet. Many samples...after plagioclase. Idioblastic to granoblastic andesine is the dominant mineral in migmatite leucosomes |  | | Report (issue) | | Maine Massachusetts New Hampshire Rhode Island Vermont OPEN-FILE REPORT 93-292-A Prepared in Cooperation...Massachusetts, New Hampshire, Rhode Island, and Vermont R. Randall Schumann EDITOR OPEN-FILE REPORT 93-292-A...Preliminary Geologic Radon Potential Assessment of Vermont Linda C.S. Gundersen andR. Randall Schumann 219...aerial radioactivity, and indoor radon data by county. Because of constraints on the scales of maps presented...filtering, recalibrating, and matching of adjacent quadrangle data sets were performed to compensate for background |  | | Journal (article/letter/editorial) | | Gedrite-Cordierite-Gneiss from Southwestern New Hampshire, USA by JOHN C. SCHUMACHER1 AND PETER ROBINSON 2 1 (Received...gedrite-cordierite-gneisses of the Middle Ordovician Ammonoosuc Volcanics, and are composed of combinations of the aluminous...that is part of the Middle Ordovician Ammonoosuc Volcanics. Samples used in this study were collected from...the Keene gneiss dome, southwestern New Hampshire, USA (Fig. 1). The distinctive gedrite-cordierite-gneisses...rather than in the Upper Member of the Ammonoosuc Volcanics as was previous believed (see also Robinson & |  | | Journal (article/letter/editorial) | | hornblende-bearing schists. Plagioclase is calcium rich andesine ( X n n = C a / ( C a + N a ) , 0.31-0.32). 3...hornblende, orthoamphibole or epidote tends to be andesine. The most sodic plagioclases (oligoclase) occur...hornblende, it developed slightly later in the syn- to post-kinematic stage. Due to the shallow slope of the...grains suggests that this reaction occurred in the post-kinematic stage. Another reaction observed in slightly...during this period, the stabilisation of syn- to post-kinematic orthoamphibole with respect to hornblende |  | | Book (volume) | | 01225 442836) Distributors USA AAPG Bookstore PO Box 979 Tulsa OK 74101-0979 USA (Orders: Tel. (918) 584-2555...are included however the polyhedron is a distorted cube or approximates to a tetragonal antiprism. Four...balanced by a higher valency cation e.g. Ti**, or by post-crystallization oxidation. Excess (OH) has been...anthophyllite and cummingtonite near Chester, Vermont, USA, and which have regularly repeating sequences...end-members. Can. Min., 29, 287-99. Docka, J. A., Post, J. E. & Burnham, C. W. 1987. Positional disorder |  | | Book (chapter) | | specimen was heated to 1300°C. of which the Lake County Types 'a' and 'e' diffractions were found after...coexisting with hornblendes in Post Pond Volcanics, New Hampshire and Vermont, and further study is again...| 12/30/19 4:27 PM microscopy revealed large andesine crystals with 'e'-type antiphase domain boundaries...texture was attributed to epitaxial nucleation of andesine on the (110), (110), (100) and (130) faces of...clear why the labradorite host is dusty and the andesine guest is clear. structure is also puzzling. The |  | | Journal (article/letter/editorial) | | magmatic belt extending from Niagara Icefalls to Mt. Murchison (Musumeci, 1999) and belonging to the...“Tonalite Belt” of the Wilson Terrane to the west (Mt. Murchison area; Fig. 1d) and the low-grade metavolcanic...as large nematoblasts, equant grains and syn- or post-kinematic needles (Fig. 4c). The nematoblasts are...gedrite in sample BC34. Plagioclase (Table 1b) is an andesine with slight prograde zoning from an42 (core) to...Geochemical characteristics of boninite series volcanics: implications for their source. Geochimica et |  | Driouch, Youssef, Debat, Pierre, Ganne, Jérôme, Béziat, Didier, Kriegsman, Leo M., Martignole, Jacques (2017) The Cordierite-Orthoamphibole Rocks of the Variscan Dome of Gavarnie-GèDre-Héas: The Gedrite of Gèdre (Hautes Pyrénées, France) The Canadian Mineralogist, 55 (2) 245-281 doi:10.3749/canmin.1600032 | Journal (article/letter/editorial) | | Oam in the Oam-Crd layers of the migmatites is andesine (An48), whereas the Pl of the migmatites and anatectic...crd, hcrd pnt, geik, hem, oilm, dilm sp, herc, usp, mt h2oL, fo8L, fa8L, abL, sil8L, anL, kspL, q8L Note:...eritebearing gneiss, Okanogan dome, Washington, USA. Journal of Metamorphic Geology 29, 425–449. LABOTKA...gedritecordierite-gneiss from southwestern New Hampshire, USA. Journal of Petrology 28, 1033–1073. PITRA, P.,...composition limits of orthoamphibole from the Post Pond Volcanics, Vermont. American Mineralogist 65, 1103–1118 |  | | Report (volume) | | previously in the Wilmarth Lexicon and 5,506 are post-1935 names or pre-1936 names not included in the...Bull. 1060-D, p. 193, 252-253, pl. 7. In Nemaha County, Kans., member is basal unit of Howard limestone...Aarde farm, sec. 4, T. 26 S., R. 11 E., Greenwood County. Aaron Slatet Precambrian or Paleozoic: Central...Central Railroad, sees. 5-7, T. 11 S., R. 5 E., Pope County. Named for Abbott Station. Abbyville Gabbrol Precambrian...map. Occurs in vicinity of Abbyville, Mecklenburg County. Abercrombie Formationl Middle Cambrian: Western |  | | Journal (article/letter/editorial) | | for recent hydrothermal fluids on the ocean floor. Post-depositional alteration of the Witwatersrand rocks...ones indicate that the fluid composition during post-depositional alteration was largely controlled by...als ffir rezente submarine hydrothermale Fluide. Post-diagenetische Alterationsprozesse sind der Versenkungsmetamorphose...Metasedimentgesteinengestatten die Annahme, dab die post-diagenetische Fluidzusammensetzunghauptsg.chlich...stratigraphic markers. Previous models, proposed for the post-depositional alteration history of the Witwatersrand |  | | Journal (article/letter/editorial) | | Global Sciences Center, Orono, Maine 04469-5790, USA Geoinformation Center, National Institute of Advanced...the orthoamphibole-bearing garnet (GrtG A) is andesine (An39-47). Matrix plagioclase grains are zoned...composition limits of orthoamphibole from the Post Pond Volcanics, Vermont. Am. Mineral. 65, 1103–1118. Spear, |  | | Journal (article/letter/editorial) | | et al. (1998) described one faulting event that post-dates 740 Y Y Y Table 1 Regional tectonic evolution...metamorphism ?Deposition of boulder conglomerate post D1/ pre D2; magmatism Reverse dextral thrusting...Development of major shear zones are interpreted to post-date main period of widespread granitoid intrusion...oblique slip faults and dolerite dyke intrusion as post-dating thrusting (Table 1). Although McMillan (1996)...and 2.72 Ga intrusive rocks at Marymia support two post-magmatic thermal events; one in the Late Archean |  | | Book (edition) | | for the first time, i.e. Mesozoic sediments and volcanics. It also once more transformed rocks that already...Lake, near Tioga Pass, Sierra Nevada, California, USA). Note that the porosity of the brittle fractures...Lake, near Tioga Pass, Sierra Nevada, California, USA). Note that the porosity of the brittle fractures...progressing fluid-rock reactions are evident from the NW Mt. Cagua Crater Bore hole 50 F 100 0 15 10 20...5 The magmatic-hydrothermal metamorphic system of Mt. Cagua, Philippines, showing thermal structure and |  | | Report (volume) | | both addition, during first of use prograde be post-peak step the of that contents in metamorphic...cooled history is calculating fluid are used, post-peak zoning of strategies rocks Chapter inclusions...Cry03+***) atoms; to obtain represent Xer numbers Mt is total in Table number of alkali per to 24... other The jd-ct. (14) or or within or jd-en-mt, pyroxenes provided If, compo- A compo- gr-pp...crystallochemically coincides are is quartz, state en-di-ct-mt also pl exchange it of to conditions combination |  | | Report (volume) | | FELDSPARS 242 Mesoperthites 246 Antiperthites Andesine antiperthite from a metamorphosed "Moonstone"...Black-clouded feldspars 279 SUNSTONES FROM LAKE COUNTY, OREGON 279 CHAPTER J.V. SMITH 12. SOME CHEMICAL...specimen (A~Lt-o) has a supe r La t t Lce repeat "usA less than the lower portion (An"u50)' A super lattice...&. DePol Blasi (1980) Mt. Pelage, Maritime Alps, France Blasi e t al. (1981) Mt. Caval, Maritime Alps...Australia Grew (1979) Kilbourne Hole, New Mexico, USA Hiss (1979)* Central Alps, Switzerland Raase &. Morteani |  | | Report (volume) | | FELDSPARS 242 Mesoperthites 246 Antiperthites Andesine antiperthite from a metamorphosed "Moonstone"...Black-clouded feldspars 279 SUNSTONES FROM LAKE COUNTY, OREGON 279 CHAPTER J.V. SMITH 12. SOME CHEMICAL...specimen (A~Lt-o) has a supe r La t t Lce repeat "usA less than the lower portion (An"u50)' A super lattice...&. DePol Blasi (1980) Mt. Pelage, Maritime Alps, France Blasi e t al. (1981) Mt. Caval, Maritime Alps...Australia Grew (1979) Kilbourne Hole, New Mexico, USA Hiss (1979)* Central Alps, Switzerland Raase &. Morteani |  | | Book | | Enterprises, PO Box 213, Livermore, California, 94551, USA. Because of space limitations, only a subset of the...we have retained the English version of the name, Mt. Vesuvius, for example. Directional indications appear...Hidden Valley Road, Kingsport, Tennessee, 37663, USA. The authors appreciate the advice and kind assistance...City, Nevada, USA; Peter Embrey, London, England; Jessie Hardman, Long Beach, California, USA; and Barbara...Barbara Nichols, Livermore, California, USA. All of these colleagues made helpful comments and substantive |
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