 | Ewers, G. R., Mackenzie, D. E., Wyborn, D., Oversby, B. S., McPhie, J., Andrew, A. S. (1994) Regional 18 O depletions in igneous rocks from the northern Drummond Basin, Queensland, Australia, and their implications for epithermal gold mineralization. Economic Geology, 89 (3) 662-673 doi:10.2113/gsecongeo.89.3.662 | Journal (article/letter/editorial) | | Skaergaard intrusion (Taylor and Forester, 1979), Iceland (Muehlenbachset al., 1974), Au-Ag mineralized areasin...andesitc;possiblepigeonitcand very abundantmagnetite;rare plagioclase slightly alteredto sericite,trace chloritizedglass...Rhyolitic ignimbrite Unnamed • 8356357318 885O 2504 Rhyolitic ignimbrite Unnamed • 8356334320 Rhyolitic...Rhyolitic Unnamed I 8356- Denselywelded,moderatelycrystal-richto crystal-richand lithie-poorrhyolitic...Voltanits • 8356182329 8850 3031 Rhyolite Unnamed • 8256- Nonwelded,very lithie~poorandcrystal-poor |  | | Report (issue) | | Geochemical Correlations and tectonic setting of the northeastern Carolina Zone in North Carolina ……………………………...medium-grained, dense, consisting primarily of plagioclase, augite and olivine. Diabase occurs as dikes...trace to common amounts. Figure 7: Figure showing unnamed, formal and informal names of plutons and intrusive...lithologies. The dikes are typically composed of plagioclase, actinolite (after augite), chlorite and epidote...the informally named Chapel Hill pluton and an unnamed pluton in the southeast corner of the Hillsborough |  | | Report (volume) | | Ordovician and Silurian 3. stratigraphy of northeastern Aroostook County, Maine: Geol. Soc. America...Survey Bull. 1457-G, p. G43-G44 4. Olivine- and plagioclase-phyric basalt 6. 42 m 1. Single thick hackly...ridge-forming 9. Gradationally overlies and underlies unnamed strata in lower part of Makah Formation 10. Type...Alvord, D. c., 1976, Pre-Silurian stratigraphy of northeastern Massachusetts: Geol. Soc. America Mem. 148,...10. Type locality: Martin Marietta Co. Belgrade quarry, just E of intersection of County Route 1434 and |  | | Journal (article/letter/editorial) | | Permian volcanic successions of the Carroll–Nandewar region, northern Tamworth Belt, southern New England Orogen...Australia. Geological mapping in the Carroll–Nandewar region near the northwestern margin of the Tamworth Belt...Kaputar package and most parts of the Rocky Creek region to the northeast, and the Tulcumba and probably...Conglomerate and Lark Hill Formation in the Rocky Creek region. Boundaries of the Werrie and Rocky Creek pyroclastic...Formation. KEYWORDS: Carboniferous, Carroll–Nandewar region, lavas, New England Orogen, pyroclastics, SHRIMP |  | | Journal (article/letter/editorial) | | tiny grains and films along the boundaries of plagioclase and clinopyroxene and in cracks, their crystallization...Eldholm, 1994), such as the Siberian superplume in northeastern Russia responsible for Permian– Triassic continental...complexes formed when northern Siberia passed over the Iceland hotspot. The activity responsible for the Arctic...magmatism (250 Ma) and the modern cycle of the Iceland hotspot rigorously constrained to 0–70 Ma (see...(Holwell et al., 2011) within the Siberian and Iceland LIPs host large and giant PGE fields. However, |  | | Report (issue) | | ............ 32 5. Quartz- alkali-feldspar- plagioclase (QAP) ternary diagram (Streckeisen, 1976) showing..... 35 6a, b, c, d. Quartz- alkali-feldspar- plagioclase (QAP) ternary diagram (Streckeisen, 1976) showing...iii page 7a, b, c. Quartz- alkali-feldspar- plagioclase (QAP) ternary diagram (Streckeisen, 1976) showing...deposited in a vast sedimentary basin present in the region between about 640 to 620 Ma. On the northwestern...deformation and metamorphism. About 617 Ma ago, the region was intruded by many granodiorite, granite and |  | | Report (volume) | | locations of wilderness and roadless areas in northeastern Georgia and adjacent North and South Carolina...2. Map showing major structural features in northeastern Georgia and adjacent North and South Carolina...Chapel Cemetery and north of Hightower Creek, northeastern Macedonia quadrangle 9 5. Lower-hemisphere equal-area...Macon Counties, N.C. The areas collectively span a region of polydeformed and metamorphosed rocks assigned...Roadless Areas are in the Blue Ridge Mountains of northeastern Georgia and southwestern North Carolina (fig |  | | Report (issue) | | mineral-exploration history 4 Perlite 4 Free perlite deposit 4 Unnamed perlite deposits 4 Blue Rock claims area 5 Hollinger...energy (fig. 1). The Free perlite deposit and three unnamed perlite deposits on the southwestern side of the...miles northwest of the Free perlite deposit, three unnamed perlite deposits contain 700,000 tons, 420,000...within the study area, the Free deposit and three unnamed deposits, were examined. The inferred subeconomic...to be of economic importance. Unnamed Perlite Deposits Three unnamed perlite deposits occur within the |  | | Report (volume) | | rocks into three distinct stratified sequences. An unnamed Cretaceous volcanic sequence, probably the oldest...TERTIARY ROCKS, COROZAL QUADRANGLE C5 by an unnamed Cretaceous volcanic sequence, probably the oldest...Corozal quadrangle are probably those in the northeastern part (area 1, fig. 2). They include volcanic...volcanic sandstone and siltstone. Because this unnamed sequence is bounded by faults, its stratigraphic...associated rocks occupy a small area in the northeastern part of the quadrangle (fig. 2). In the Corozal |  | | Report (volume) | | deformed pelitic quartz-muscovite-biotite-chlorite-plagioclase schist containing thin basal intervals of fine-grained...Abrams, C. E., 1984, Geology of the Greater Atlanta region: Georgia Geologic Survey Bulletin 96, 127 p. The... Type section: Mt. Carroll Southwest Section: Quarry on the north side of U.S. Highway 52, 2.5 mi southwest...Cumberland Escarpment area of east-central and northeastern Kentucky. Consists predominantly of calcilutite...aphanitic rhyolite. Contains phenocrysts of plagioclase and quartz in a glassy or devitrified groundmass |  | | Journal (article/letter/editorial) | | ALABASTER (C. J.), An occurrence of brucite at Merehead quarry, Cranmore, Somerset, 4o0 ALEXANDER (P. O.) and...BATTEY (M. H.) and DAVIDSON (W.), Exsolution of plagioclase from clinopyroxene in a pyroxenite from Jotunheimen...stevensite, 443 Broken Hill, New South Wales, plagioclase, 469; gneiss, M2o BROWN (G. M.) and PECKETT (A...hypersthene, magnetite, olivine, hercynite, plagioclase, 5i 3 Garnet, see Grossular, Spessartine Geothermometer...-ilmenite, lO3, 257; muscovite paragonite, 211 ; plagioclase-'alkalifeldspar, 253 GISB (F. G. F.), see HENDERSON |  | | Report (volume) | | Formation, Canaima National Park in the Gran Sabana region of Estado Bolfvar, Venezuela. View is southsoutheast...Deposits Index for the Precambrian Shield of Northeastern South America including Venezuela, Guyana, Suriname...showing distribution of mineral occurrences in northeastern South America, by Norman J Page, Floyd Gray...part of the belt to granulite facies in the northeastern part. The Imataca Complex was intruded by granitic...constitutes the southern margin of the vast plains region referred to as Los Llanos; the Gran Sabana makes |  | | Report (Issue volume) | | associated syntectonic granitoids ............43 Unnamed calc-alkaline volcanics ...............................................................100 Unnamed garnet schist (P L d1).................................................................100 Unnamed quartz schist (P L d2) ................................................................101 Unnamed miscellaneous metamorphics (P L d3) .............Cultana .......................113 Stuart Shelf region .............................................. |  | | Report (issue) | | «2 -+cancetaase. saan oceania se59 Northeastern Kentucky—Northeastern Alabama Cross Section .............Wireline-log cross section from northern Kentucky to northeastern Alabama showing correlation of key Mohawkian...that the source volcanoes were situated in the region between what are now Alabama and Pennsylvania....approximately 300 m in the Upper Mississipp1 Valley region to about 3,000 m in the central Appalachian Mountains...containing K-bentonite beds are also known from the region of Port-au-Port in western Newfound- land. Ordovician |  | Henley, H. F., Brown, R. E., Brownlow, J. W., Barnes, R. G., Stroud, W. J. (2001) Grafton-Maclean Metallogenic Map (SH/56-6, SH/56-7) Metallogenic Study and Mineral Deposit Data Sheets. Geological Survey of New South Wales | Report (issue) | | 1:250 000 metallogenic map sheet area lies in northeastern New South Wales and extends over a significantly.............................. Baryulgil asbestos quarry ............................................................ Plutonic suites of the New England Region .................................................comprehensive mineral occurrence database for the region, a modern recompilation of the geological data...assistance of the many landholders throughout the region who provided access — and in many cases also contributed |  | | Report (issue) | | .......................................... 16 Unnamed sandstone and conglomerate ................................................................ 19 Unnamed cong lomerate ............................................................................. 21 Unnamed conglomerate member .............................schist of the Salinian block . This is overlain by unnamed Upper Cretaceous sandstone and cong lomerate and...significant amounts . The Santa Margarita granite quarry is the principal source of high-quality aggregate |  | | Report (issue) | | Restriction and renaming of the Neruokpuk Formation, northeastern Alaska, by Hillard N. Reiser, Donald K. Norris...Age of the Metaline Limestone or Formation in northeastern Washington, by John E. Repetski ..............1977, Paleogene floras from the Gulf of Alaska region: U.S. Geol. Survey Prof. Paper 997, 108 p. Angoonian...Angoonian Stage adopted. Stage. Overlies unnamed stage; underlies Seldovian Anon Formation (age changed)...41-49 Geographically extended from central and northeastern Maryland and southeastern Pennsylvania into: |  | OLSZEWSKI, W, WIRTH, K, GIBBS, A, GAUDETTE, H (1989) The age, origin, and tectonics of the Grão Pará Group and associated rocks, Serra dos Carajás, Brazil: Archean continental volcanism and rifting. Precambrian Research, 42 (3) 229-254 doi:10.1016/0301-9268(89)90013-2 | Journal (article/letter/editorial) | | metasedimentary rocks. The Gr~o Pard Group isoverlain by an unnamed sedimentary (dominantly sandstone) unit,and unconformably...metavolcanic sequence of the Gr~o Pard, in the region of the Serra Norte Fe deposits, is bimodal, with...Serra dos Caraj~s Granite, which intrudes the unnamed sedimentary unit overlying the Gr~o Par~ Group...geologic map and location of the Serra dos Caraj~s Region, Brazil. Key: 1, Savanna areas, generally developed...iron formation; 2, Serra dos Caraj~s Granite; 3, unnamed sandstone unit; 4, Pojuca Sequence; 5, Carajas |  | | Journal (article/letter/editorial) | | St. Hilary: carminite, EUROPE Iceland (fsland) Bondolfur, East Iceland: beudantite, 431 Pengenna (Trewethen)...587 Sellatur, East Iceland: pitchs~one, anor- thoclase, 587 Skruthur, East Iceland: pitchstonc, anorthoclase...anorthoclase, 587 Thingmuli, East Iceland: andesine, 587 F a r o e s (F~eroerne) Erionite, chabazite...azurite, olivenite, 428; coronadite, 343 Embleton quarry, Cockermouth: alunite, dickite, thaumasite, zunyite...scheelite, 921 Meldon aplite quarry, Okehampton: bavenite, 577 Meldon limestone quarry, Okehampton: scheelite |  | | Report (volume) | | most complete, formation divisible into three unnamed members: lower, about 850 feet thick, interbedded...feet near Little Pybus Bay. Conformably overlie unnamed conglomerate and sandstone unit in Little Pybus...southwestern South Park. Agort Chert Ordovician: Northeastern Nevada. Marshall Kay, 1966, Canadian Petroleum...County. Alborn Till Pleistocene (Wisconsin): Northeastern Minnesota. H. E. Wright, Jr., and R. V. Rube...(of Lousetown Formation) Pleistocene, lower: Northeastern California. P. W. Birkeland, 1963, Geol. Soc |  | | Report (issue) | | __________________________ Unnamed epiclastic rocks__________________________ Unnamed volcanic rocks -----...Silurian age exposed north of the report area. An unnamed unit of volcanic and sedimentary rocks has yielded...gastropods and corals of late Paleozoic age; an unnamed limestone contains fossils of Late Triassic(?)...5,000 feet (1,500 m) in the eastem part of the region to a few tens of feet near the margin of the Great...Valley. 3 INTRODUCTION Most major roads in the region follow the upland surface and, in general, parallel |  | | Report (issue) | | (Hornblende) 6~.7±2 m.y. Description and location: Unnamed pluton within the Talkeetna Mountains batholith...(Hornblende) 6:1.0±2 m.y. Description and location: Unnamed felsic to intermediate hypabyssal rocks. Dacite...(Amphibole) 438± 13 m.y. Description and location: Unnamed. Heterogeneous assemblage of altered mafic volcanic...Eberlein (1975). 1 Description and location: Unnamed. HE,terogeneous assemblage of altered mafic volcanic...Ordovician (Cara-:locian) to Description and location: Unnamed. HeterogeneUpper Silurian (Ludlovian) on the basis |  | | Report (issue) | | Calaveras fault via a deep crossover structure in the region of Mission Peak (Andrews and others, 1993). The...are shown on the map. JKfn Sandstone of Novato Quarry (Late Cretaceous). Distinctly bedded to massive...smaller portion of the unit to the south. Kcv Unnamed sandstone, conglomerate, and shale of the Castro... Ku Undivided, unnamed sandstone and siltstone (Cretaceous) Kc Undivided, unnamed conglomerate (Cretaceous)...(Cretaceous) Tertiary strata Tas Unnamed glauconitic sandstone (Paleocene). Coarse-grained, green, glauconite |  | | Journal (article/letter/editorial) | | autochthonous. This paper examines the stratigraphy of the region between Wallabadah and Muswellbrook to establish...J. Roberts unpubl. data). The structure of the region and explanation for the block rotation will be...1972; Cherry 1987; Davies 1988; Dawson 1988) in the region between the Quipolly Dome and the Murrurundi Fault...to publication of a geological map of the Wingen region (Manser 1968), the only mapping undertaken in the...recognised by Manser (1968) extended across the region that we now recognise as containing the coeval |  | Sarna-Wojcicki, Andrei M., Deino, Alan L., Fleck, Robert J., McLaughlin, Robert J., Wagner, David, Wan, Elmira, Wahl, David, Hillhouse, John W., Perkins, Michael (2011) Age, composition, and areal distribution of the Pliocene Lawlor Tuff, and three younger Pliocene tuffs, California and Nevada. Geosphere, 7. 599-628 doi:10.1130/ges00609.1 | Journal (article/letter/editorial) | | eastern San Andreas fault system within the northeastern San Francisco Bay area, total offset east of...volcanic strata of early Pliocene age for their region of fallout. The tuff of Monticello Road is identified...geologic mapping and paleontologic studies in this region, and of this pyroclastic unit in particular. Vitt...Formation of the San Pablo Group, and to the east over unnamed younger sediments, and disconformably underlies...additional sites beyond the San Francisco Bay area, in unnamed, deformed upper Tertiary alluvium on the west side |
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