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| Bedrock Geology of Rhode Island o GEOLOGICAL 5. I 09 8* Ci PI O i o TJ i i I to & Ol BULLETIN...State of Rhode Island Development Council i M SURVEY I C.to 1295 Bedrock Geology of Rhode Island...1295 Prepared in cooperation with the State of Rhode Island Development Council Lithology, structure, and...geological studies in Rhode Island____._.________.-__.-_-____. Position of Rhode Island in the Appalachian...-___--_Older gneissic rocks of northwestern Rhode Island.____________ Nipsachuck Gneiss------------- |
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| SCHISTS AND ASSOCIATED GRANITES AND PORPHYRIES OF RHODE ISLAND BENJAMIN K. EMERSON JOSEPH H. PERRY WASHINGTON.............. 18 Nonoccurrence of il vaite in Rhode Island.................. 19 Inclusion of limestone...granite porphyry ...................... Blue-quartz-microcline porphyry .......................... Microgranite...vicinity of Providence and Narragansett Bay, Rhode Island................................ 10 II. Porphyritic...embedded in quartz groundmass................ Microcline Baveno twin from quartz porphyry south of Spencer |
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| AN OVERVIEW Rhode Island MINERALS & COLLECTORS F. WILLIAM MILLER Harvard Mineralogical Museum 24 Oxford...A L SPECIES and many varieties occur within Rhode Island. Part of this abundance is attributable to the...Northern Zone, including Providence County and the northern towns of Kent County, 2) the Middle Zone, including...Washington County, and 3) the Southern Zone consisting of Washington County and southwestern Newport County...in what is now Rhode Island—for example, steatite from Johnston in Providence County for carving bowls |
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| Precambrian Fourchu Group of southeastern Cape Breton Island (Keppie and others, 1979). Hornblende gabbros (Eden...Avalon terrane have included those of a pre-Iapetus island arc (Rast and others, 1976), an aborted rifting...records northwestward subduction beneath a cratonic island arc (Cape Breton terrane), and the development...Devonian plutonic terrane within the Avalon zone of Rhode Island: Geological Society of America Bulletin, v....Fourchu Group in the Louisbourg area, Cape Breton Island: Nova Scotia Department of Mines and Energy Paper |
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| AMERICA NOTES ON THE MINERAL LOCALITIES OF RHODE ISLAND PART II. REMAINING COUNTIES Lrovn W. FrsnBn...Staurolite Stilbite Zoisite BRISTOL COUNTY The major portion of Bristol County shows sedimentary rocks consisting...consisting chiefly of the Rhode Island formation of shales, con_ glomerates and sandstones. B. K. Ernerson2has...similar to the Diamond Hill area of Providence County. The Bristol area, in the vicinity of portsmouth... K. Gedney: Notes on the Mineral Localities of Rhode lsland. Arn. Mineral.,11, No. 12, pp. 334-340, (1926 |
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| the big ones."—on label! Globe, in southern Gila County, is in central Arizona. COLORADO — "Enclosed are...identified. They are all from southwestern Fremont County in the Hayden Creek area of Colorado. Pegmatite...xls (dark gray with bluish opalescence). Fremont County is in central Colorado. DELAWARE—"The enclosed...by Mr. Carvalho. One consists of orange-brown microcline (feldspar), smoky quartz xls, and black biotite... The other specimen consists of orange-brown microcline, massive smoky quartz, and small flakes of silvery-white |
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| Quadrangle Rhode Island-Massachusetts By SAMUEL J. POLLOCK 3EOLOGY OF SELECTED QUADRANGLES IN RHODE ISLAND...with the Development Council of the State of Rhode Island JNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON..._ _ _ _ _ _ _ Rhode Island Formation ________ -------------------________ Rhode Island Formation, undifferentiated_...Tiverton________________ Conglomerate on Aquidneck Island and at Fogland Point and High Hill Point_ _ _ _...1. Geologic map of the Tiverton quadrangle, Rhode Island- Massachusetts ___________________________ |
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| thick locally. Tc CATACLASTIC ROCKS RELATED TO NEWPORT FAULT ZONE (Tertiary) Mylonite, chlorite breccia...50 m.y.-old Silver Point Quartz Monzonite near Newport, Washington (Miller, 197^b). ROCKS OF SELKIRK...the west side of the complex is bounded by the Newport fault, and the east side is bounded by a probable... potassium feldspar is perthitic orthoclase, microcline locally. Rock is extremely heterogeneous; made...contain about 0.5 percent fine-grained muscovite. microcline. Average color index is 11. All potassium feldspar |
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| modern drainages. Tc CATACLASTIC ROCKS RELATED TO NEWPORT FAULT ZONE (Tertiary) Mylonite, chlorite breccia...cuts 50 m.y. Silver Point Quartz Monzonite near Newport, Washington (Miller, 1974b. ROCKS OF SELKIRK CREST...the west side of the complex is bounded by the Newport fault along the edge of Priest Lake, and the east... potassium feldspar is perthitic orthoclase, microcline locally. Rock is extremely heterogeneous; made...is microperthitic orthoclase, with patches of microcline in some crystals. Plagioclase averages between |
 | Miller, F.K., Burmester, R.F., Powell, R.E., Miller, D.M., Derkey, P.D. (1999) Digital geologic map of the Sandpoint 1- by 2-degree quadrangle, Washington, Idaho, and Montana. Open-File Report Vol. 1999 (99-144) US Geological Survey doi:10.3133/ofr99144 | Report (issue) |
| the Purcell trench4, (2) the Newport sequence north of the town of Newport, and (3) the Chewelah sequence...rocks of the Newport sequence are separated from those of the other two sequences by the Newport Fault (fig...West of the Chewelah sequence and north of the Newport sequence of the Belt Supergroup is the Deer Trail... Wrenco Davis Lake Bodie Canyon Waitts Lake Newport Valley Lane Mtn Priest River Jumpoff Joe Lake...Cambrian quartzite rests unconformably on the Newport sequence. Eugeoclinal Paleozoic rocks crop out |
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| the west side of the complex is bounded by the Newport fault along the edge of Priest Lake, and the east...phenocrysts up to 2 cm. Potassium feldspar is microcline; irregular distribution in rock with respect...near contact. Entire west end of body cut off by Newport fault. Rock has affinities to the granodiorite...east of map area. Part of west end cut off by Newport fault and part is in contact with granodiorite...Potassium feldspar is orthoclase with patches of microcline. Distribution of potassium feldspar is non-uniform; |
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| geologic map of the Wigwams area, Bonner and Boundary County, Idaho By Fred K. Miller1 Open-File Report 91-25...east arm of the Newport fault. The central part extends under the spoon-shaped Newport fault and the western...All dated rocks within the complex east of the Newport fault have yielded concordant or nearly concordant...intrudes the southern part of the complex near Newport, Washington, so the possibility that some of the...microperthitic orthoclase containing patches of microcline in some crystals. Concentration of 2.5 to 4 cm-long |
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| occurrences. These localities have been listed by county; and, strictly for convenience, the list has been...None theless, with the aid of a good state or county map, plus local inquiries, the list could be helpful...micromounting PENINSULA Wayne County International Salt C o . mine—Detroit Alpena County National G y p s u m...dolomite, marcasite, pyrite, quartz, sphalerite Eaton County anhydrite, carnallite (r), celestite, dolomite...grunerite, magnetite, quartz Imperial Heights Huron County (c)—Pigeon (near Bayport) calcite, glauconite |
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| arch of the Palermo mine, North Groton, Grafton County. Rob Lawrence photo, courtesy Bob Whitmore. 242...at 15:01 05 January 2015 LOCATIONS BY COUNTY Belknap County Alton area: arsenopyrite, galena, quartz...occurrence is particularly noteworthy for Carroll County Albany, Blackberry Crossing (includes the Moose...(microcrystals), genthelvite* (microcrystals), microcline, quartz* (smoky, crystals), siderite, siderophyllite...(microcrystals), manganocolumbite (microcrystals), microcline (crystals), microlite (microcrystals), milarite |
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| community of about 1,200 in southeastern Pinal County, is in southern Arizona. ARKANSAS—We recently received..."We recently bought another place (in Montgomery County, Ark.). Guess I told you the Atomic Energy Commission...tour'—we've been on practically every road in the county, so we know it pretty well now." "I'm sending you...angular masses. Rocky Hill is in southern Hartford County in central Connecticut. See Mr. Nelson's article...Atlanta 5, Ga. Columbus is in western Muscogee County in western Georgia. INDIANA—Under separate cover |
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| metagraywacke along the county road half way between Chestnut Gap and Lebanon School, Fannin County, Ga. These crystals...aluminum silicate rocks. This area is in Clearwater County, Idaho, and any visiting rockhounds can get directions...in Vernon Parish, La. M A I N E — From Cranberry Island, Muscongus Bay (Lincoln Co.), Maine, we have a...Rockbridge locality at Greenbelt, Prince Georges County, Md., has been identified as meta-strengite. This...dated July 1, 1959, comes from Paul Moore, 237 Island Ave, Ramsey, N . J. "Here is some interesting material |
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| OF THE NEWPORT AND PRUDENCE ISLAND QUADRANGLES AND PART OF THE SAKONNET POINT QUADRANGLE, RHODE ISLAND...PRINTING OFFICE : 1959 O - 511171 667-100 Rhode Island Formation Sandy and conglomeratic facies made...subhedral microcline microperthite as 5- much as 3 inches long. Main constituents are microcline microperthite...slickensides. Mineral Isograd in Rocks of the Rhode Island Formation. V 12 ( i 14 Axial trace of anticline |
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| Del Norte County; Trinity River, Trinity County; Spanish Creek and Gopher Hill, Plumas County; Placerville...Dorado County; Cherokee Flats, Yankee Hill,and Oroville, Butte County; French Corral, Nevada County; Indian...Indian Gulch and Volcano, Amador County; and Alpine Creek, Tulare County. Other western localities are:...Diamond Basin, Ada County, Idaho; Curry County, Oreg.; and Nelson Hill, near Glacier County, Mont. The Great...Pierce County; Oregon, Dane County; Kohlsville, Washington County; Saukville, Ozaukee County; Eagle, |
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| Connecticut Maine Massachusetts New Hampshire Rhode Island Vermont OPEN-FILE REPORT 93-292-A Prepared...Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont R. Randall Schumann EDITOR OPEN-FILE...Preliminary Geologic Radon Potential Assessment of Rhode Island Linda C.S. Gundersen andR. Randall Schumann...aerial radioactivity, and indoor radon data by county. Because of constraints on the scales of maps presented...The reports are available in county formats and State summaries. The county reports typically contain both |
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| to Catalina Island, an island resort 22 miles s.w. of Long Beach, Calif. Catalina Island (also known...Santa Catalina) is 23 miles long and 10 wide. The island is known for minerals and Mr. Shalevetz was good...local name for a mineral found in abundance on the island and said to consist of jasper and limestone. Two...stalactitic mass. Collected off the east end of the island. Opal (Cacholong). Chalky white crust on a gray...(Chalcedony). Grayish pebbles from east end of island. Quartz (Milky). Nice pebble found on beach. Limestone |
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| bedrock map (which also showed the geology of Rhode Island) was published in 1917 by Benjamin K. Emerson...Emerson, B.K., 1917, Geology of Massachusetts and Rhode Island: U.S. Geological Survey Bulletin 597, 289 p...metavolcanic rocks older than the Proterozoic Z Rhode Island and Dedham batholiths.......... Rocks possibly...Conglomerate (Pp), Wamsutta Formation (Pw, Pwv), Rhode Island Formation (Pr, Prc), and Dighton Conglomerate........................................... 44 Rhode Island and southeastern Massachusetts batholiths and |
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| confirmation of my guess as to the rock I found in Marion County, Florida. "I say it's jasper, flint and agate....group of small, flesh-colored microcline xls. "Smoky quartz xls with microcline xls. From Idaho wilderness...wilderness area near Stanley in Blaine County, Idaho. Some of these come in very large xls." — on label. ILLINOIS...that were found in the Warsaw formation, Hancock County, Illinois. These were found in geodes embedded...Drennon area on the Kentucky River in eastern Henry County, Ky., we have an attractive 4 x 6 inch polished |
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| quarries................................ Caledonia County ........................................................................................ Orange County..................................................Continued. Orleans County ................. ................................ 45 Newport Granite Company's................................... 46 Washington County .................................................the granites and quarries Continued. Washington County Continued. Cabot ............................. |
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| Quadrangle Rhode Island :ly ROGER B. WILLIAMS }EOLOGY OF SELECTED QUAiDRANGLES IN RHODE ISLAND JEOLOGICAL... "!repared in cooperation with the ~tate of Rhode Island Development r:louncil NITED STATES GOVERNMENT..._ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Rhode Island Formation_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _..._ _ _ _ _ _ _ _ Rhode Island Formation, undifferentiated________________ Rhode Island Formation, argillaceous...map and sections of the Wickford quadrangle, Rhode Island _____________________________________________ |
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| Plagioclase about an3Q. Potassium feldspar is microcline. Thin scattered grains of biotite are medium...in contact with biotite. Potassium feldspar is microcline; crystals characteristically enclose numerous... Enclosed minerals impart poikilitic look to microcline on stained slabs. Accessory minerals include...between anso and an35. Potassium feldspar is microcline. Orwig Hump body has the lowest average potassium...color index is 11. All potassium feldspar is microcline, occurring chiefly as phenocrysts that average |
