 | | Report (issue) | | Geology of Massachusetts E. Stratigraphy of the Milford-Dedharn Zone, Eastern Massachusetts: An Avalonian... Stratigraphy of the Nashoba Zone, Eastern Massachusetts: An Enigmatic Terrane G. Stratigraphy of the...Belt, Central Massachusetts H. Structural and Metamorphic History of Eastern Massachusetts I. Intrusive...Intrusive Rocks of Eastern Massachusetts J. Radiometric Ages of Rocks in Massachusetts L.S. GEOLOGICAL SURVEY...PROFESSIONAL PAPER 1366-E-J The Bedrock Geology of Massachusetts NORMAN L. HATCH, JR., Editor E. Stratigraphy |  | | Report (issue) | | Radlometrlc Age Data Bank (RADB) of Rocks from Massachusetts by Robert E. Zartman and Richard F. Marvin...Radlometrlc Age Data Bank (RADB) of Rocks from Massachusetts Robert E. Zartman and Richard F. Marvln This...contains the records of radlometrlc ages for Massachusetts from the Radlometrlc Age Data Bank of the U...portrayed on a new bedrock geologic map of Massachusetts (Zen, 1983). The compilation Is believed to...they appear on the Bedrock Geologic Map of Massachusetts (Zen, 1983). Steiger, R. H., and Jager, E. |  | | Report (issue) | | Geology of the land area of the Boston 2° sheet, Massachusetts, Connecticut, Rhode Island and 10- New Hampshire... 16 17 18 U. S. Geological Survey Boston, Massachusetts 19 ,U. S. Geological Survey* OPEN FILE REPORT...GEOLOGY OF THE LAND AREA OF THE BOSTON 2° SHEET, MASSACHUSETTS, CONNECTICUT, RHODE ISLAND AND NEW HAMPSHIRE...magnetite, apatite, garnet, fluorite, sphene, and zircon; secondary 14 minerals include sericite, epidote...Milford quadrangle, Massachusetts, yielded 19 a 620 + 15 my,Precambrian,zircon age. 20- According |  | | Report (volume) | | Structural Dislocations in Eastern Massachusetts GEOLOGICAL SURVEY BULLETIN 1410 Structural Dislocations...Dislocations in Eastern Massachusetts By ROBERT O. CASTLE, H. ROBERTA DIXON, EDWARD S. GREW, ANDREW GRISCOM...faults and mylonite zones that form the eastern Massachusetts dislocation belt UNITED STATES GOVERNMENT PRINTING...under title: Structural dislocations in eastern Massachusetts. (Geological Survey Bulletin 1410) Bibliography:...119.3:1410 1. Faults (Geology) Massachusetts. 2. Mylonite Massachusetts. I. Castle, Robert O. II. Series: |  | | Report (issue) | | forms one or more of the porphyritic phases of the Ayer intrusive complex. ag Andover Granite (?), light-... Milford Quadrangle, Massachusetts, yielded a 620 + 15 my, Precambrian, zircon age according to Richard...material, with accessory pyrite, feldspar, epidote, zircon, and calcite. Some outcrops can be classified... outcrops especially along the contact with the Ayer which intrudes it. i' The quartzite unit is included...is inferred; it is again exposed in Auburn, Massachusetts. nu, num Nashoba Formation, undivided, consists |  | | Report (issue) | | Bedrock Geoloqy of the Nashua River Area, Massachusetts - New Hampshire By Gilpin Rile Robinson, Jr...and Bronson Hill Anticlinorium of Vermont and Massachusetts. Deformation D2 produced subhorizontal, northeast-trending...and Bronson Hill Anticlinorium of Vermont and Massachusetts. Deformation D2 produced subhorizontal, northeast-trending...sedimentary rocks in the Worcester and Harvard, Massachusetts, areas. The Late Devonian to Pennsylvanian age...Pennsylvania rocks in the Worcester and Harvard, Massachusetts, areas. Average uplift rates following the Acadian |  | | Report (issue) | | the Marlborough Quadrangle, Middlesex and Worcester Counties, Massachusetts by J. Christopher Hepburn...Geologic Map of the Marlborough quadrangle, Massachusetts: U.S. Geological Survey Open File Report IS...OF THE MARLBORO QUADRANGLE, MIDDLESEX AND WORCESTER COUNTIES, MASSACHUSETTS by J. Christopher Hepburn...tentatively correlated with the porphyritic phase of the Ayer Granite Complex (the Clinton Quartz Monzonite of...communication, 1976) has radiometrically dated the Ayer as Silurian, 425 m.y. fg Foliated Granite (Silurian |  | | Book | | Conference Organizer: NEIGC Secretary: China 0. Ayer, Boston University Dabney W. Caldwell, Boston University...Department of Geology Boston University Boston, Massachusetts 02215 to; PREFACE In 1966, John Rodgers...Davis in the Connecticut Valley of western Massachusetts, and gradually extended itself. oo over New...gratitude and appreciation goes to Ms. China 0. Ayer, who has helped me faithfully almost every day since...Brown University The Foxboro Co., Foxborough, Massachusetts Geography, University of Toronto U. S. G, S |  | | Report (issue) | | MAP OF THE CLINTON QUADRANGLE, WORCESTER COUNTY, MASSACHUSETTS BY JOHN H. PECK 1975 Explanation for...accessories are garnet, magnetite, apatite and zircon. Forms 18 resistant knobs. In the southeastern...OFFICE : 1959 O - 511171 867-100 -1- 9.1267 DSa Ayer Granodiorite Light to medium gray, medium to coarse-grained...constituents are muscovite, epidote, sericite, apatit zircon, garnet, and magnetite. Phenocrysts of microcline... In the northeastern part of the quadrangle the Ayer has been brecciated an4 mylonitized and, a/.though |  | Lodge, Robert W.D., Gibson, Harold L., Stott, Greg M., Hudak, George J., Jirsa, Mark A., Hamilton, Mike A. (2013) New U–Pb geochronology from Timiskaming-type assemblages in the Shebandowan and Vermilion greenstone belts, Wawa subprovince, Superior Craton: Implications for the Neoarchean development of the southwestern Superior Province. Precambrian Research, 235. 264-277 doi:10.1016/j.precamres.2013.06.011 | Journal (article/letter/editorial) | | 55811, USA d Minnesota Geological Survey, 2642 University Avenue W., St. Paul, MN 55114 1032, USA e Jack...thermal ionization mass spectrometry. Detrital zircon geochronology using LA-ICP-MS confirms that the...deposits. This study presents the results of new U–Pb zircon geochronology of the metasedimentary and metavolcanic...Minnesota is interpreted in light of new detrital zircon geochronology obtained from the Shebandowan assemblage...ages ca. 2690 Ma (Corfu and Stott, 1998). Detrital zircon geochronology has confirmed that the metasedimentary |  | | Report (volume) | | H33 6. Formation names in the Worcester area, Massachusetts, by Richard Goldsmith, Edward S. Grew, 3. Christopher........H43 7. Stratigraphic names in eastern Massachusetts and adjacent States, by Richard Goldsmith, David...Section of south wall of Lynn Griffin mine //I, Henry County, Ala., type locality of Baker Hill Format ion....H28 9. Core-hole section at Highland Park, Henry County, Ala., lithologies of the farthest downdip part...the east flank of the Merrimack synclinorium, Massachusetts and New Hamp shire.................... .... |  | | Report (issue) | | so-called Pennsylvanian basins of southeastern Massachusetts. Three papers deal with the geology of alkali...alkali plutonic-volcanic areas in Massachusetts and New Hampshire. High-grade and low-grade (prehnite-pumpellyite)...(prehnite-pumpellyite) metamorphism in Massachusetts and Maine, respectively, are the subjects of two of the papers...Plutonic Series, and the geology of the Ayer Granodiorite of Massachusetts. JOHN R,. GRIFELN STUDIES IN...Brownlow V1 Vil iX Part I. Geology of eastern Massachusetts INaTOROVGNNE TON “5. B bo 8 OR Bo ee ek 5 ee |  | | Report (volume) | | OTIS SMITH, Director Bulletin 597 GEOLOGY OF MASSACHUSETTS AND RHODE ISLAND BY B. K. EMERSON WASHINGTON....................................... Worcester County, Mass....................................... Westboro...member........................... Northeastern Massachusetts..................................... General..................................... Western Massachusetts...............................................district............................. Eastern Massachusetts............................................ |  | | Report (issue) | | Silurian stratigraphy of northeastern Aroostook County, Maine 1 . David C. Roy and Ely Mencher Discussion:...Silurian stratigraphy of northeastern Aroostook County, Maine... Louis Pavlides Lower Devonian Seboomook...Shride Pre-Silurian stratigraphy of northeastern Massachusetts .Kenneth G. Bell and Donald C. Alvord Stratigraphic...Wachusett-Marlborough Tunnel, east-central Massachusetts .James W. Skehan. S.J.. and A. Adel Abu-moustafa...stratigraphy in the Brimfield area, Connecticut and Massachusetts .John D. Peper and M. H. Pease, Jr. Pre-Silurian |  | | Journal (article/letter/editorial) | | Scales in the Abitibi Greenstone Belt: Preface J. A. AYER,† Precambrian Geoscience Section, Ontario Geological...of technical reports summarized in Ayer and Calhoun (2005) and Ayer et al. (2005). The more complete outcomes...31’ 83 07’ AYER ET AL. Cochrane ONT QUE USA Kap usk asin g Stru ctur al Z one USA Swayze belt...portion of the Abitibi greenstone belt (modified from Ayer et al., 2005) with the locations of the study areas...the regional stratigraphic interpretation begun by Ayer et al. (2002, 2005; see Fig. 1) to other parts of |  | | Report (volume) | | Resources of the Hudson and Maynard Quadrangles Massachusetts By WALLACE R. HANSEN GEOLOGICAL SURVEY BULLETIN...Prepared in cooperation with the Commonwealth of Massachusetts Department of Public Works UNITED STATES GOVERNMENT...Hollow diorite___________________________________ Ayer granite__________________________________________...geology of the Hudson and Maynard quadrangles, Massachusetts. 2. Map showing surficial geology of the Hudson...RESOURCES OF THE HUDSON AND MAYNARD QUADRANGLES, MASSACHUSETTS By wALLACE R. HANSEN .ABSTRACT The highest |  | | Journal (article/letter/editorial) | | Inc. Economic Geology, v. 107, pp. 1043–1072 Zircon Alteration in Wall Rock of Pamour and Hoyle Pond...successfully uncovered <3-mm alteration domains in zircon rims based on Th/U, REE, and isotopic signatures...are significantly younger than host-rock ages. Zircon alteration is from a complex interplay of recrystallization...coinciding with peak regional metamorphism. Subsequent zircon alteration correlating to thin, shallow-dipping...within the camp continued into the Proterozoic. Zircon alteration occurs as light REE-enriched “rims,” |  | | Report (issue) | | the Andover Granite and surrounding rocks, Massachusetts by Robert Oliver Castle Doctor of Philosophy...South Groveland, and Reading quadrangles of Massachusetts. The Andover Granite and Sharpners Pond Tonalite...over 90 to 95 square miles of northeastern Massachusetts, is typical of many of the two-feldspar granites...approximately 270 square miles of northeastern Massachusetts and about 2 square miles of southeastern New...of the Massachusetts part of the map area is in Essex County, and the remainder is in Middlesex County |  | Frieman, Ben M., Kuiper, Yvette D., Kelly, Nigel M., Monecke, Thomas, Kylander-Clark, Andrew (2017) Constraints on the geodynamic evolution of the southern Superior Province: U-Pb LA-ICP-MS analysis of detrital zircon in successor basins of the Archean Abitibi and Pontiac subprovinces of Ontario and Quebec, Canada. Precambrian Research, 292. 398-416 doi:10.1016/j.precamres.2017.01.027 | Journal (article/letter/editorial) | | Superior Province: UPb LA-ICP-MS analysis of detrital zircon in successor basins of the Archean Abitibi and...Superior Province: U-Pb LA-ICP-MS analysis of detrital zircon in successor basins of the Archean Abitibi and...Superior Province: U-Pb LAICP-MS analysis of detrital zircon in successor basins of the Archean Abitibi and...inductively-coupled mass-spectrometry analysis of detrital zircon was conducted on graywacke samples from successor...subprovince. Predominately Neoarchean zircon grains (8095% of the total zircon population) reflect local sources |  | | Field Trip Notes | | inplace theory for the southern part, as in Dutchess County, New York. Whether such a combination of theories...(1914) Geology of the North Creek quadrangle, Warren County, New York, New York State Mus., Bull. 170. (1919)...Geology of the Schroon Lake quadrangle, Warren County, New York, New York State Mus., Bull. 213-214....end of the Green Mountains near North Adams, Massachusetts, the Vermont Valley sequence is in contact with...south* The quartzite north of Williamstown, Massachusetts p where Walcott (1888) found trilobite fragments |  | | Book | | MASSACHUSETTS MINERALAND FOSSIL LOCALITIES Compiled by Peter P. Gleba 'I!~·· . \. i r,'"--""'4' I...publication. Peter P. Gleba December 2008 Quincy, Massachusetts Member Boston Mineral Club Reprinted by permission...is some of the most valuable real estate in Massachusetts. Calculating it another way, [Peter Gleba] said...is some of the most valuable real estate in Massachusetts. It has access, it has convenience, it has exposure...window of his car as he passed west of the Massachusetts state lottery offices and saw a spreading rust |  | | Journal (article/letter/editorial) | | Lake Road, Sudbury, Ontario, Canada P3E 6B5 J. A. AYER, Ontario Geological Survey, Precambrian Geoscience...ionization mass spectrometry (TIMS) on zircons (Ayer et al., 2002b, 2005), and additional study of the...31’ 83 07’ BATEMAN ET AL. Cochrane ONT QUE USA Timmins Swayze belt PD dz PD dz Kirkland Lake...Lake Kap usk asin gS truc tura l Zo ne USA z Ld CL Round Lake Kenogamissi Batholith Larder Lake ...subprovince showing the distribution of assemblages (Ayer et al., 2002a). The box around Timmins shows the |  | Ayer, J., Amelin, Y., Corfu, F., Kamo, S., Ketchum, J., Kwok, K., Trowell, N. (2002) Evolution of the southern Abitibi greenstone belt based on U–Pb geochronology: autochthonous volcanic construction followed by plutonism, regional deformation and sedimentation. Precambrian Research, 115 (1) 63-95 doi:10.1016/s0301-9268(02)00006-2 | Journal (article/letter/editorial) | | plutonism, regional deformation and sedimentation J. Ayer a,*, Y. Amelin b, F. Corfu c, S. Kamo b, J. Ketchum...30 September 2001 Abstract New mapping and U–Pb zircon geochronological results in the southern Abitibi...author. E-mail address: john.ayer@ndm.gov.on.ca (J. Ayer). 0301-9268/02/$ - see front matter © 2002 Elsevier...0 3 0 1 - 9 2 6 8 ( 0 2 ) 0 0 0 0 6 - 2 64 J. Ayer et al. / Precambrian Research 115 (2002) 63–95 ...compilation mapping project (Ayer and Trowell, 1998; Ayer et al., 1999a,b,c; Ayer and Trowell, 2000). Jackson |  | | Journal (article/letter/editorial) | | University, Sudbury, Ontario, Canada P3E 2C6 J. A. AYER, Ontario Geological Survey, Sudbury, Ontario, Canada...episodes on the basis of groupings of numerous U-Pb zircon ages of pre2750, 2750 to 2735, 2734 to 2724, 2723...(1990), Morey and Meints (2000), Thériault (2002), Ayer et al. (2006), Goutier et Melançon (2007) and Stott...1991; Jackson et al., 1994). Heather (2001) and Ayer et al. (2002a) established that many previously...in Ayer et al. (2005) and modified with new ages (see in the text) clan information based on Ayer et |  | | Journal (article/letter/editorial) | | of U–Pb isotope systematics and new methods of zircon dating (i.e. the abrasion technique; Davis, 1982;...correlation with adjacent volcanic terranes. U– Pb zircon systematics in combination with field observations...volume places special emphasis on new precise U– Pb zircon age determinations, and shows the importance of...lithological units, the geochemistry, and existing U–Pb zircon age determinations to construct Abitibi-wide lithostratigraphic...and Donaldson (1992), based on the existing U– Pb zircon data set in conjunction with detailed sedimentary |
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