 | | Report (issue) | | Geology of the Old Speck Mountain Quadrangle, Maine by Daniel Jeremy Milton Cambridge^ Massachusetts...Sphene-flecked diorite from Maine. ............. A-l Gedrite from Oxford County, Maine. ............. B-l...Speck Mountain quadrangle .... .In pocket Interpretive geologic sections of the Old Speck Mountain quadrangle..... . 2. Columnar Section for the Old Speck Mountain quadrangle ... 12 Mf. 0 r d/>c iit*i Oi^-d...section of the Littleton formation in the Old Speck Mountain quadrangle .... s 85 Hampshire plutonic series |  | | Book (volume) | | Mineralogy by Vandall T. King and Eugene E. Foord Maine Geological Survey DEPARTMENT OF CONSERVATION Walter...Resources Information, Maine Geological Survey Walter A. Anderson, State Geologist Maine Geological Survey...DEPARTMENT OF CONSERVATION 1994 Copyright ©1994 by the Maine Geological Survey, Department of Conservation. All...photograph: Fluorapatite, Pulsifer quarry, Auburn, Maine (2.2 cm specimen), Harvard Mineralogical Museum...Wendell E. Wilson, ©1985. The laws and policies of Maine and the United States prohibit discrimination in |  | | Journal (article/letter/editorial) | | Muscovites from PeliticSchistsof the PuzzleMountainArea, Maine Jouw T. CnBNBv, eNo Cnanr,Bs V. Guroorrr Department...microprobe analysesof muscovite from 32 Puzzle Mountain (Maine) meta pelites reveal that paragonite (Pg)...either muscovite megacrysts or pseudomorphs after staurolite is 21.6 (rsz) and 18.3 (usz); groundmassmuscovitesaverage...(1968) suggestionthat muscovitepseudomorphsafter staurolite are equilibrium features of prograde metamorphism...muscovite pseudomorphs after staurolite in the RangeleyOquossocarea (Maine) representequilibrium features |  | | Book (volume) | | 0 n101ercai o of Maine j f·~ ....__ :,,. . - .._"' ..;. .. ~ L-- -~ \. • .J_..::.; I Volume...History, Gems, and Geology edited by Vandall T. King Maine Geological Survey DEPARTMENT OF CONSERVATION Robert...Robert G. Marvinney, State Geologist of Maine Volume 2: Mining History, Gems, and Geology Edited by...Resources Information, Maine Geologi,cal Survey Robert G Marvinney, State Geologist Maine Geological Survey...DEPARTMENT OF CONSERVATION 2000 Copyright ©2000 by the Maine Geological Survey, Department of Conservation. All |  | | Journal (article/letter/editorial) | | Department of Geological Sciences, University of Maine, Orono, Maine 04469, U.S.A. ABSTRACT An extensive natural...natural biotite data set from western Maine constrains the temperature and crystalchemical controls on the...metamorphism of the Acadian Orogeny of western Maine is ideal for this approach in that metamorphism...metapelites with quartz, aluminous phases (chlorite, staurolite, or sillimanite), Ti phases (ilmenite or rutile)...content, Ti most dramatically increases above staurolite zone conditions. Our constrained data set allows |  | | Journal (article/letter/editorial) | | Department of Geological Sciences, University of Maine, Orono, Maine 04469, U.S.A. 3 Department of Geological...SmX for the Fe-rich phases biotite, chlorite, staurolite, and garnet. Mössbauer spectra of muscovite typically...samples from the well-studied occurrences in western Maine to allow consideration of our results within a tightly...petrologic/mineralogic framework exists in western Maine for undertaking our proposed study of metapelite...purposes. Moreover, although the rocks in western Maine have experienced polymetamorphism, the papers by |  | | Journal (article/letter/editorial) | | upper 5 of Tracy's (1975)high-gradezones: (2) the staurolite-sillimanite zone, (3) the sillimanite zone, (4)...concentrateson the Mt. Monadnock,Peterborough, Lovewell Mountain, Hillsboro, Sunapee,Mt. Kearsarge, Penacook, Cardigan...Sunapee,4) Mt. Kearsarge,5) Penacook,6) Lovewell Mountain,7) Hillsboro, 8) Mt. The heavy line shows the...analysis points for a given sample kyanite-muscovite-staurolite-garnet-biotite-quartz. We were collected within...representsan average Hampshire. However, kyanite-staurolite bearing rocks of 3 analyses taken within the |  | Moench, R.H., Pankiwskyj, K.A., Boone, G.M., Boudette, E.L., Ludman, Allan, Newell, W.R., Vehrs, T.I. (1982) Geologic map of western interior Maine. Open-File Report Vol. 1982 (82-656) US Geological Survey doi:10.3133/ofr82656 | Report (issue) | | cooperation with the Maine Geological Survey GEOLOGIC MAP OF WESTERN INTERIOR MAINE • - Chen-f0e. wit...Augusta, Maine, and University of Hawaii, Honolulu, Hawaii --Maine Geological Survey, Augusta, Maine, and...University, Syracuse, New York 4/ --Maine Geological Survey, Augusta, Maine, and Queens College, Flushing,...Dgb MESOZOIC--Rocks probably related to White Mountain PlutonicVolcanic Suite of Cretaceous to Triassic...basaltic breccia in plug at west edge of Old Speck Mountain quadrangle Alkali gabbro and syenite at Androscoggin |  | | Journal (article/letter/editorial) | | of Geological Sciences,University of Maine at Orono, Orono, Maine 04469, U.S.A. Dvln M. D.llnv Department...biotite from metapelitic rocks of northwestern Maine was accumulated in the context of metamorphic grade...samplesare from Areas A and B of Figure I in western Maine. Both areas are underlain mainly by 16l t62 ...LS = LOWERSILLIMANITE ZONE A = ANDALUSITE St = STAUROLITE USt = UPPEBSTAUROLITE LSt = LOWERSTAUROLITE G...Oqc = Oquossoc Rgy = Rangeley OSll = Old Sp€ck Mountain Rld = Rumford Bhl = Bethel BrPd = BryantPond |  | | Journal (article/letter/editorial) | | temperature estimates of 565~ and > 6 2 0 ~ for staurolite-andalusite zone assemblages and anatectic rocks...Institute of Technology, Pasadena, California 9t 125, USA Offprint requests to: A.P.S. Reymer * Present address:...metamorphic zones vary from garnet through to staurolite-andalusite. Relevant pelitic assemblages in the...plagioclase__,andalusite +chlorite and in the staurolite-andalusite zone, garnet-muscovitequartz_+ plagioclase-biotite...andalusite. The garnets in both the garnet and staurolite zone are almandine rich with minor components |  | | Journal (article/letter/editorial) | | ltffluids in equilibrium with mineral nite;. staurolite-quartz-garnet-aluminum silicate; "rr"-btog"....Fig. l. Sketch map of study area in south-central Maine. DSv: Vassalboro Formation; Sw: Waterville Formation;...pelitic schists: st.-and. : staurolite * andalusite; st.-@r. = staurolite * cordierite (hachurcs on high-grade...occurrences of rocks with staurolite + cordierite and are bounded by a staurolite * cordierite isograd. Numbers...to be in equilibrium by blage of mineralswas staurolite,cordierite, andalusite,sillimaplagioclase, the |  | | Journal (article/letter/editorial) | | Systematic retrograde metamorphism of sillimanite-staurolite schists, New Salem area, Massachusetts KURT HOLLOCHER...e-sphene (rare). Retrograde sillimanite-out, staurolite-out, and garnet-out isograds have been mapped...Biotite and chlorite became more Fe rich owing to staurolite, garnet, and ilmenite breakdown. Biotite, chlorite...There is no evidence for re-equilibration of staurolite, garnet, or albite during retrograde metamorphism... domes extending from Long Island Sound to the Maine-New Hampshire border (Thompson and others, 1968; |  | Pattison, D. R. M., Spear, F. S., Debuhr, C. L., Cheney, J. T., Guidotti, C. V. (2002) Thermodynamic modelling of the reaction muscovite+cordierite→Al2SiO5+biotite+quartz+ H2O: constraints from natural assemblages and implications for the metapelitic petrogenetic grid. Journal of Metamorphic Geology, 20 (1) 99-118 doi:10.1046/j.0263-4929.2001.356.356.x | Journal (article/letter/editorial) | | Rensselaer Polytechnic Institute, Troy, NY, 12180, USA 3 GR Petrology Consultants Inc., 4605 12 Street N...01002, USA 5 Department of Geological Sciences, University of Maine, Orono, ME, 04469±5790, USA 2 ABSTR...(Pattison & Jones, 1993; DeBuhr, 1999), Onawa aureole, Maine (Symmes & Ferry, 1995), McGerrigle aureole, Quebec...cordierite porphyroblasts from the aureole of the South Mountain Batholith, Nova Scotia (localities in Raeside...(Compton, 1960; p. 1406) and the Cupsuptic aureole, Maine (Ryerson, 1979; p. 84). These observations can only |  | | Journal (article/letter/editorial) | | the western 70 percent of the Augusta quadrangle, Maine, has shown that this metamorphic terrane consistsof...as follows: (l) a widespreadandalusite-biotite-staurolite-producing eventof uncertaincause,was followed...report the results of a moderately detailed sentedin Maine by the distribution of isogradswhich study of metamorphismin...throughout vailed of metamorphismof pelitic rocks in Maine have been played an important role in polymetamorphism...complicatedetailed petrologic studiesand make acmetamorphism in Maine through a better underwhich occurred in rPresentaddress:Air |  | | Journal (article/letter/editorial) | | aluminium silicate, quartz, chlorite, chloritoid, staurolite, potassium feldspar, orthopyroxene. cordierite...Lavrent’eva and Perchuk (1990) La1 (1993) Garnet-Staurolite Perchuk (1991) . Biotite-Orthopyroxine Sengupta...Pub. no. 43, Blackwell Scientific Publications, Oxford, p. 45564. Berman, R. G., 1991, Thermobarometry...sillimanite + quartz bearing metapelites, Puzzle Mountain area, northwest Maine: Am. Jour. Sci., v. 279, no. 4,...Pub. no. 43, Blackwell Scientific Publications, Oxford, p. l-44. Eunster. H. P.. Albee A. L.. Bence. A |  | | Journal (article/letter/editorial) | | limiting AKFM assemblage: muscovite-biotite-garnet-staurolite ( + quartz + plagioclase + ilmenite), whereas...metamorphism at Isua occurred at amphibolite grade (staurolite-kyanite zone) and is associated with the early...inclusion, but plagioclase, ilmenite, biotite, staurolite and tourmaline are also present. Biotite commonly...contain muscovite and, in a very few samples, staurolite. Muscovite is typically tabular, and in certain...schistosity. Muscovite also forms large porphyroblasts. Staurolite is poikiloblastic, and, like garnet, commonly |  | | Journal (article/letter/editorial) | | Krogstad Richard J. Walker Nature of the crust in Maine, USA: evidence from the Sebago batholith Received:...sources: Avalon-like crust (eNd.23), and Central Maine Belt metasedimentary rocks (eNd,24), without material...Maryland at College Park, College Park, MD 20742, USA Editorial responsibility: J. Patchett Introduction... 46 boniferous Sebago batholith in southwestern Maine is the largest exposed granitic pluton in New England...lithotectonic units (BH Bronson Hill Belt, CMB Central Maine Belt, MB Merrimack Belt, PN Putnam-Nashoba Belt) |  | | Journal (article/letter/editorial) | | dioctahedral micas in metamorphic sequences from western Maine M.F. Brigatti,1,* C.V. Guidotti,† D. Malferrari...granodioritic bodies occurring in three areas of western Maine. The metamorphic mineral zones identified by mineral...granites). In trioctahedral micas from western Maine and especially in those with graphite, there are...composition. Keywords: Biotite, muscovite, western Maine, crystal chemistry, crystal structure Introduction...investigated in the present work, all from western Maine, are both trioctahedral micas in the phlogopiteannite |  | | Journal (article/letter/editorial) | | metamorphism, replacing earlier sillimanite, kyanite and staurolite. In the Sillimanite Zone of our area, they often...Guidotti 1966, E&G E&G Guidolti & l/ / Sassi 1976 (NW Maine) Tracy 1978 sT~' / T'~ (Massachusetts / / 9 ~...sillimanite+quartz bearing metapelites, Puzzle Mountain area, northwest Maine. Am J Sci 279:411-434 Eugster HP...sillimanite-potash feldspar isograd in western Maine, USA. Contrib Mineral Petrol 12: 25-62 Ferry JM (1978)...and sediment during metamorphism, south-central Maine. Am J Sci 278 : 1025-1056 Frost BR (1979) Mineral |  | | Journal (article/letter/editorial) | | of Geological Sciences* Harvard University, 24 Oxford Street, Cambridge, MA 02138 (Received 19 December...is located in the western part of the Lovewell Mountain and the eastern part of the Bellows Falls 15 minute...belong to a second and higher nappe, the Fall Mountain nappe (Figs. 2 and 3). My structural analysis...lower temperature, sillimanite and sillimanite-staurolite zone muscovites taken from (Cheney & Guidolti...muscovites from pelitic schists of the Puzzle Mountain area, Maine. Ibid. 58, 1076-79. Deer W. A., Howie |  | | Report (volume) | | Facies series 2, Type 2a The Cupsuptic aureole, Maine The Kiglapait aureole, Labrador Other aureoles of...4 Summary of facies series types ; Northwestern Maine—an example of regional-scale contact metamorphism...metamorphosed pelites Cordierite-garnet-muscovite Staurolite-cordierite-muscovite Kyanite Quartz-absent assemblages...Ca and Mn Staurolite-cordierite-muscovite K-feldspar + chlorite K-feldspar + staurolite Hypersthene...4. Orthographic projection of the Rattlesnake Mountain pluton, San Bernadino Mountains, southern California |  | | Book | | commercial ores and secondary minerals by state, county, township, and geologic range. For easy identification...cities, and many of today’s prosperous western county seats began as mining-boom camps. trating sand...Whether you such as those listed alphabetically by county, township, and range in Part II of this book. Where...in his work, that he may know first of all what mountain or hill, what valley or plain, can be prospected...examples of all rock types. Most so-called rocks are mountain-building materials; they are massive, colored |  | | Report (issue) | | above the complex may connect with faults at Durst Mountain and Hardscrabble Creek and may be older than the...km west of the Wasatch Mountains; in the Durst Mountain uplift, 15 km east of the Wasatch Mountains; north...south. Many small perennial streams drain the mountain mass and have cut canyons, which are especially...Vegetation ranges from open grassland, scrub oak, and mountain mahogany at the base of the range (1,400-2,000...(written commun., 1977) on the west side of the Durst Mountain uplift, which is on trend with faults mapped by |
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