 | | Report (volume) | | WALCOTT, DIRECTOR THE GEOLOGY EASTERN BERKSHIRE COUNTY MASSACHUSETTS BY BENJAMIN KENDALL EMERSON WASHINGTON................................................ Hinsdale anticline ......................................description .................................. 23 Hinsdale limestone................................................. Hinsdale gneiss............................................. 47 47 Hinsdale limestone ................................................ Berkshire schist .'......................... .......... |  | | Report (issue) | | SURVEY GEOLOGY OF THE WINDSOR QUADRANGELE, MASSACHUSETTS Stephen Alien Norton This report is preliminary...Rocks General Statement Stamford Granite Gneiss Hinsdale Gneiss General Statement Petrology Correlation...Formation General Statement Petrology Thickness Age Berkshire Schist General Statement Schist and Phy11ite Black...129 Mineralogy 131 General Statement Garnet Biotite Chlorite Muscovite and Paragonite Albite 131 132...to recent geologic mapping in northwestern Massachusetts, southern Vermont, and southwestern New Hampshire |  | | Report (issue) | | THE TALG. SOAPSTONE AND ASBESTOS DEPOSITS OF MASSACHUSETTS by E. Chute Prepared under a cooperative project...investigations in the Coraroonvealth of >! Boston, Massachusetts CONTENTS Abstract .......................... 9 10 Appraisal^ ..^.^.... ........ , Massachusetts Talc Coapany stine^ $*pl°gy..........;.,;,...location^ ..... tt9 ^ I 'f:1'*- 2T 2ff ~» ' ' Berkshire Talc Maijufacturing Ccepany quarries^ ..... 2T... TH2 TALC, SOAPSTOSE, ANB ASBESTOS DEPOSITS OF MASSACHUSETTS Newton E. Chutos Abstract ctal talc and soapstona |  | | Report (volume) | | OTIS SMITH, Director Bulletin 597 GEOLOGY OF MASSACHUSETTS AND RHODE ISLAND BY B. K. EMERSON WASHINGTON................................................ Hinsdale gneiss.............................................................................. Worcester County, Mass....................................... Westboro...member........................... Northeastern Massachusetts..................................... General..................................... Western Massachusetts............................................ |  | | Journal (article/letter/editorial) | | AND ON CONTACT PHENOMENA LIMESTONE IN WESTERN MASSACHUSETTS PENTTI ESKOLA Geophysical Laboratory, Carnegie...INTRODUCTION The eastern part of Berkshire County in western Massachusetts is underlain by a vast area of...granite gneiss.' 'B. K. Emerson, "Geology of Massachusetts and Rhode Island," U.S. Geol. Surv., Bull. 597...Hampshire County, Mass.," U.S. Geol. Surv., Mon. 29 (I898), and "The Geology of Eastern Berkshire County, Mass...Station in Becket, in Washington and Peru, in Hinsdale, and in the valleys of East Lee, Tyringham, and |  | | Journal (article/letter/editorial) | | published Emerson's bulletin on the "Geology of Massachusetts and Rhode Island." One of the most notable advances...STEIDTMANN hornblende with a little pyroxene and biotite. The constituents of the Losee gneiss are quartz...oligoclase, pyroxene, and some hornblende and biotite. The Pochuck gneisses are mostly of unknown origin...Schist of the Doe Run and Avondale Region, Chester County, Pennsylvania," U.S. Geol. Surv., Prof. Paper 98...Emerson3recognizestwo belts of pre-Cambrianrocks in Massachusetts, a western belt forming the backbone of the |  | | 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) | | Formation of Montgomery, 1953 (3.6 to 4.5 m.y.) Hinsdale Formation Basalt (4.7 to 23.4 m.y.) Rhyolite (4...emplaced. The oldest of these rocks constitute the Hinsdale Formation, which consists mainly of alkalic olivine...domes and one small rhyolite ash-flow sheet. The Hinsdale lavas range from scattered highly eroded remnants...nonhydrated obsidian, all other new analyses were of biotite, hornblende, or plagioclase separates with a purity...lithium internal standard. Sixty analyses of a biotite test sample show a standard deviation of + 1.4 |  | | Report (volume) | | See Bauxite and Hallpysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found...commercial quantity or quality. Asphalt. Colbert County, small quantity has been shipped from near Leighton;...following localities: Bibb County, Pratts Ferry; Calhoun County, near Tampa; Clay County, T. 20, Pv. 7 E.; Jefferson...Jefferson County, at Elyton; Lee County, at Chewacla lime works; St. Clair County, at Gfeensport; Shelby...Shelby County, near Whiting Station and Calera; Talladega County, in several places. Bauxite. Cherokee |  | | Journal (article/letter/editorial) | | Department of Geology and Geography,University of Massachusetts,Amherst, Massachusetts01003, U.S.A. Prrnn J...metamorphic and plutonic rocks. To the west in the Hinsdale area,folds in Monadnock sequencestratigraphy are...and structural evidence from the Monadnock and Hinsdale areas provides the key for reevaluation of the...and overturned gneiss domes in west-central Massachusetts. Metamorphic studies show different P-Tpaths...femrginous chert. The upper member consistsof biotite-muscovitegarnet gneiss representing metamorphosed |  | | Report (volume) | | latite-andesite._____-_-_---_-_____--__-_____-_-_________ Hinsdale formation.------- ---- --- - -----.General features...peneplain, and in Pliocene (?) time the rocks of the Hinsdale formation were ^spread out. This formation is...on the economic geology of southeastern Gunnison County, Colo.: U. S. Geol. Survey Bull. 380, pp. 21-40...ore deposits of the Bonanza district, Saguache County, Colo.: Colorado Geol. Survey Bull. 9, 136 pp....Colorado. It is nearly as large as the States of Massachusetts and Connecticut combined, about a quarter as |  | | Report (volume) | | Tuff__________________________________________ Hinsdale Formation._______________________________________________...fossil fumaroles, Cebolla quadrangle.________ 12. Hinsdale Formation capping Fish Canyon Tuff, Tola quad...It ranges in thickness from 300 to 1,280 feet. Biotite from the Fish Canyon Tuff has a Ol C2 CONTRIBUTIONS...deposition of the ash-flow tuffs, dark flows of the Hinsdale Formation ranging from latite to basalt in composition...erupted upon an erosional surface of low relief. The Hinsdale, the youngest volcanic formation in the region |  | | Journal (article/letter/editorial) | | description of each of the rocks of Essex county, Massachusetts. These comprise plutonic rocks, volcanic...the geology of the Green Mountain region in Massachusetts. The Algonkian rocks comprise the Washington...Tyringham gneiss, East Lee gneiss, Hinsdale limestone, and Hinsdale gneiss. 1The Titaniferous Iron Ores...MARSTERS, 3 Report on the Geology of Essex County, Massachusetts, to accompany map, by JOHNH. SEARS,Bull...describes the geology of Old Hampshire county in Massachusetts, which includes the present counties of |  | | Report (issue) | | . . . . . . . . . Late basalt and rhyolite ·(Hinsdale Formation) . . . . . . . . . . . . . . Basaltic...distribution of basaltic and rhyolitic lavas of the Hinsdale Formation . . . . . . . . . . . . . . . . . ....Photomicrographs of common basalt and rhyolite types of the Hinsdale Formation . . . . . . . . . . . . . . . . . ....Analyses of basaltic and rhyolitic lavas of the Hinsdale Formation.......................................basalt and highly silicic alkali rhyolite of the Hinsdale Formation. Locally interbedded intermediatecomposition |  | | Report (issue) | | ____---_--_----_-_------ Description _______--___---__-__-___---Biotite schists._____________________ Gneiss______----...______ Black Canyon schist.___________________ Biotite schist..._______-.___-__-_--_ Quartz-inuscovite...________________ __ Porphyritic biotite granite. ______:.___ Gray biotite granite_____ ____________ Curecanti...Volcanic and associated intrusive rocks Continued Hinsdale formation _________________________ Name and definition...Subdivisions ___________________i-_-____ Rhyolite of the Hinsdale formation _______ G eneral character. __________________ |  | Lipman, P. W., Fisher, F. S., Mehnert, H. H., Naeser, C. W., Luedke, R. G., Steven, T. A. (1976) Multiple ages of mid-Tertiary mineralization and alteration in the western San Juan Mountains, Colorado. Economic Geology, 71 (3) 571-588 doi:10.2113/gsecongeo.71.3.571 | Journal (article/letter/editorial) | | SunshinePeak Tuff (22.5 m.y.) Basalts of the Hinsdale Formation Late (Miocene) bimodal voltanits Quartz...froIn about22.5 to 11 m.y. Basalticlavas of the Hinsdale Formation were also eruptedaroundmarginsof the...differentiation, and consolidabasaltic lavas of the Hinsdale Formation covered tion of a large batholithiccomplexin...Locality and rock type K-feldspar -31.9 4- 1.02 Biotite 28.9 4- 0.8 -- 20,3 4- 0.45 10.5-•0.5 ..... 10...then irradiated. Apatites K-Ar determinations on biotite, hornblende, and were etchedfor 30 secondsin 7% |  | | Report (issue) | | Paragenesis of the Pride of America Mine, Lake City, Hinsdale County, Colorado by Richard F. Sanford, Ann M. Kramer...PARAGENESIS OF THE PRIDE OF AMERICA MINE, LAKE CITY, HINSDALE COUNTY, COLORADO By Richard F. Sanford, Ann M. Kramer...located 10 km west of Lake City, Colorado, in Hinsdale County (Fig. 1) and belongs to the Galena District...primary phenocrysts of plagioclase, sanadine and biotite. The Pride of America Mine is at the contact of...Probable former plagioclase and biotite are completely altered. Former biotite is locally shown by sphene |  | | Report (volume) | | Preliminary chronology of the Slumgullion landslide, Hinsdale County, Colorado By Richard F. Madole...............Kinematic studies of the Slumgullion landslide, Hinsdale County, Colorado By Rex L. Baum and Robert W Fleming...surficial movements on the Slumgullion landslide, Hinsdale, County, Colorado By Philip S. Powers and Maria Chiarle...176 p. Burbank, W.S., 1947, Lake City area, Hinsdale County, in Mineral Resources of Colorado: Colorado...inactive parts of the Slumgullion landslide, Hinsdale County, Colorado: U.S. Geological Survey Open-File |  | | Report (volume) | | .......................................... Massachusetts...............:...............................See Bauxite and Halloysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found...commercial quantity or quality. Asphalt. Colbert County, small quantity has been shipped from near Leighton;...following localities : Bibb County, Pratts Ferry; Calhoun County, near Tampa; Clay County, T. 20 S., R. 7 E.;...; Jefferson County, at Ely ton; Lee County, at Chewacla lime works"; St. Clair County, at Greensport; |  | Bethke, P. M., Barton, P. B., Lanphere, M. A., Steven, T. A. (1976) Environment of ore deposition in the Creede mining district, San Juan Mountains, Colorado; II, Age of mineralization. Economic Geology, 71 (6) 1006-1011 doi:10.2113/gsecongeo.71.6.1006 | Journal (article/letter/editorial) | | related to eruption of younger volcanic rocks of the Hinsdale Formation. Introduction T}•is is the secondof...assemblageof basalt and silicic alkali rhyolite (the Hinsdale Formation) was erupted to form a widespreadveneer...widespreadveneer over much of the San Juan area. The Hinsdale lavas accumulatedfrom many scatteredsourcesand over...directly beneaththe Creededistrict, the of the Hinsdale volcanism,and Steven and Eatoh's emplacelnent...and others (1976), most o1• Basalt-rhyoliteof Hinsdale Formation Creede mineralization FisherQuartz |  | Larsen, Esper S., Irving, John, Gonyer, F. A., Larsen, Esper S., 3rd, (1938) Petrologic results of a study of the minerals from the Tertiary volcanic rocks of the San Juan region, Colorado. American Mineralogist, 23 (7) 417-429 | Journal (article/letter/editorial) | | of the rhyolite of the Hinsdale formation. Local rhyolite bodies of the Hinsdale formation, such as the...oligoclaseor oligoclase-andesine), whereas those of the Hinsdale formation contain little or no plagioclase. Quartz...sanidine phenocrysts; they are present in all of the Hinsdale and Sunshine Peak rhyolites, but they are not...common in the rhyolites of the Potosi series. Biotite is present in all the rhyolitic rocks that possess...rocks. Hornblende associatedwith biotite, and rarely with augite and biotite, is present in most of the qttartz |  | | Report (volume) | | American Flats Wilderness Study Area, Ouray and Hinsdale Counties, Colorado U.S. GEOLOGICAL SURVEY BULLETIN...American Flats Wilderness Study Area, Ouray and Hinsdale Counties, Colorado By KEN HON, V. J. S. GRAUCH...American Flats Wilderness Study Area, Ouray and Hinsdale Counties, Colorado. (Mineral resources of the...Wilderness Study Area (CO-030-217), Ouray and Hinsdale Counties, Colorado. CONTENTS Summary 1 Abstract...American Flats Wilderness Study Area, Ouray and Hinsdale Counties, Colorado By Ken Hon, V. J. S. Grauch |  | | Report (issue) | | ^he Bedrock Geology of Massachusetts A. The Pre-Silurian Geology of the Rowe-Hawley Zone B. Stratigraphy...PROFESSIONAL PAPER 1366-A-D The Bedrock Geology of Massachusetts NORMAN L. HATCH, JR., Editor A. The Pre-Silurian...Jr. and Rolfe S. Stanley [etc.] 1. Geology Massachusetts. I. Hatch, Norman L. II. Series: Geological...a companion to the bedrock geologic map of Massachusetts (Zen and others, 1983; hereafter referred to... Geological Survey and the Commonwealth of Massachusetts, which was begun in 1938. They also include |  | | Report (issue) | | Wilderness Study Area (CO-030-217), Ouray and Hinsdale Counties, Colorado. SUMMARY The western San...American Flats Wilderness Study Area, Quray and Hinsdale Counties, Colorado (simplified from Lipman, 1976a...Silverton caldera to the south. Thick accumulations of biotite dacite of the Burns Member of the Silverton Volcanics...porphyritic andesite (pyroxene andesite member) and the biotite dacite (Burns Member) of the Silverton Volcanics...briefly covered. The veins, which are hosted by biotite dacite of the Burns Member of the Silverton Volcanics |  | | Report (issue) | | Howardsville 7.5-minute quadrangle, San Juan and Hinsdale Counties, Colorado by Robert G. Luedke 1 and Wilbur...1 <£^ / p ,1 1 [ 1 rt "X 30 ._ J 1 HINSDALE _ KILOMETERS 20 MILES ^ ' ^\ $> \ 5^7 ^/f...of the Pride of the West vein system, San Juan County, Colorado: Unpublished D.Sc. dissertation, Golden...The geology of the Green Mountain mine, San Juan County, Colorado: Unpublished M.Sc. thesis, Golden, Colorado...map of the Handies Peak quadrangle, San Juan, Hinsdale, and Ouray Counties, Colorado: U.S. Geological |
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