 | | Journal (article/letter/editorial) |
| paper occurs in a thin "blanket" in Precambrian phyllite. Overlyingthe copperzoneis altered (and presumably...specks in the following sequencegoing into the phyllite, away from the conglomerate;chalcociteto bornitc...not only for the modern malachite enrichment on outcrops in Pedra Verde Gulch but also for the supergenecopperin...Verde copper prospect CEARA, BRAZIL Precambrian phyllite ? , e•o I7o zo•o Fro. 2. The accessible portionof...by him and shownon the GeologicMap sandstone, phyllite,quartziteand quartz in pebbles of Brazil as Devoniansandstone |
 | | Field Trip Notes |
| metamorphism: (l) slate; (2) phyllite with biotite porphyroblasts; (3) phyllite with biotite and garnet ...faults and also in most areas by folds. Where the Upper Cambrian and Lower Ordovician part of the section...composed chiefly of slate and phyllite. This mass of slate and phyllite forms a large complex synclinorium...slate The discovery of numerous localities and phyllite be Middle Ordovician or higher. of Lower Ordovician...sequence, and both have been metamorphosed to phyllite since the faulting if any. (This boundary will |
 | | Report (issue) |
| CENTRAL MINNESOTA INCLUDING THE CUYUNA IRON-ORE DISTRICT BY E. C. HARDER AND A. W. JOHNSTON MINNEAPOLIS... 23 Descriptions of rock outcrops.............................. 30 Outcrops of silicic igneous rocks.... . . . . . . . . . . . . . . . .... . . . 40 Outcrops of subsilicic igneous rocks. . . . . . . . . ...counties. . . . . . . . . . . . . . . . . . . 52 Outcrops of slate, schist, and other metamorphic rocks...southern St. Louis counties. . . . . . . . 65 90 Outcrops of sandstone and other clastic rocks. . . . . |
 | | Report (volume) |
| --------------------------------------------Slate and phyllite ---------------------------------------------Stone...Wilderness. Nonmetallic resources, including slate and phyllite, stone, and sand and gravel are present locally...interbedded with thick sequences of slate and phyllite. Regional correlations by Merschat and Wiener...fault-Dashed where approximately located; sawteeth on upper plate Anticline-Showing axial trace and direction...GREENBRIER FAULT Great Smoky Group Boyd Gap Formation!, upper part-Fine to coarse metasandstone, metagraywacke |
 | | Report (issue) |
| and Mineral Resources of the Pico de Itabirito District Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL...and Mineral Resources of the Pico de Itabirito District Minas Gerais, Brazil By ROBERTS M. WALLACE GEOLOGY...structural and geologic map of the Pico de Itabirito district, Minas Gerais, Brazil. 6. Geologic map and schematic...tunnel "F," Rio do Peixe canyon, Pico de Itabirito district-____-----Chemical composition of marble from the...vicinity of the Bonga fault, Pico de Itabirito district------- IV Page F8 14 15 17 19 24 30 41 42 43 |
 | | Journal (article/letter/editorial) |
| minerals Article Deformation Microstructures of Phyllite in Gunsan, Korea, and Implications for Seismic...same direction. Deformation Microstructures of Phyllite in Gunsan, Korea, and Implications for Seismic...in Continental Crust. Minerals 2021, Keywords: phyllite; lattice preferred orientation; seismic anisotropy;...near plate boundaries [3,4], and the overriding upper crust in subduction zones [12,13]. In many cases...the elastic properties of deformed rocks. The phyllite from the Geumseongri Formation in Gunsan, Korea |
 | Swayze, G. A., Clark, R. N., Goetz, A. F. H., Livo, K. E., Breit, G. N., Kruse, F. A., Sutley, S. J., Snee, L. W., Lowers, H. A., Post, J. L., Stoffregen, R. E., Ashley, R. P. (2014) Mapping Advanced Argillic Alteration at Cuprite, Nevada, Using Imaging Spectroscopy. Economic Geology, 109 (5) 1179-1221 doi:10.2113/econgeo.109.5.1179 | Journal (article/letter/editorial) |
| alteration at Cuprite were intimately linked to upper plate movements above the Silver Peak-Lone Mountain...disturbed by mining activities. The Cuprite mining district is located about 200 km northwest of Las Vegas...chert, located west of the Harkless phyllite outcrops, belong to the upper Cambrian Emigrant - e). These miogeoclinal...fault blocks in the relatively unmetamorphosed upper plate of the Silver PeakLone Mountain detachment...This volcanic unit lies directly on the Harkless phyllite at the collection locality, but due to an incomplete |
 | | Report (issue) |
| 1936 show a further improvement and the Barre District 1 will probably enjoy the best business it has...unemploynient in the district no longer exists-in fact it has been necessary to go outside the district to obtain...ESTIMATED OUTPUT.OF MONUMENTAL GRANITE IN BARRE DISTRICT, VERMONT 1935 Total quarry output, rough stock...out of Barre District in rough .............. Cubic feet Manufactured in Barre District................stock consumed in district................... Cubic feet Dark stock consumed in district .............. |
 | | Journal (article/letter/editorial) |
| statistical analyses Velliky et al. [86] Southwestern Germany NAA Invasive Source discrimination - 139 ...[85] Hohle Fels, Geißenklösterle and Vogelherd, Germany NAA, XRD, SEM-EDS Invasive Provenience, geol...were collected in a geological formation whose outcrops can be found at no more than 5 km from the site...observations on small micro-samples from several French Upper Paleolithic sites. In particular, they demonstrated...these sources are shale outcrops (Shale 1 to Shale 5), two are phyllite outcrops that were associated to |
 | | Report (issue) |
| region. Particularly spectacular and helpful are outcrops provided by intensive stream erosion, which has...complex and undeformed in the western part), and an upper sheeted member (plagiogranites, mafic dikes and...terrane by Dickinson, 1979) consists of Permian and Upper Triassic volcaniclastic and volcanic rocks with...terrane are overlain by Upper Triassic limestone and Upper Triassic to lower Upper Jurassic clastic sedimentary...arc (Brooks and Vallier, 1978). It consists of Upper Triassic volcanic (basalt, andesite, and rhyolite) |
 | | Journal (article/letter/editorial) |
| overthrust by the Verbicaro Unit, consisting of Upper Triassic to Lower Miocene platform carbonates, cherty...only focused on the mesostructures of the Cetraro outcrops and have extended their conclusions to the much...age and that the Verbicaro Unit represents the upper stratigraphic portion of the San Donato Unit. In...paper, mainly based on the discovery of several outcrops in the Sant’ Agata d’Esaro area never mapped before...carbonates are tectonically separated by the overlying Upper Triassic to Miocene succession, thus distinguishing |
 | | Report (issue) |
| granitoids. Vein deposits are widely developed in the upper volcanic portions of the principal arcs, especially...volcanism has been well established. In Hokuroko district of Japan, there is strong evidence of a period...sequences can be accounted for by the erosion of the upper portions of the arc systems. Atmospheric evolution...alteration assemblage from Chamoli and Rudraprayag district of Uttaranchal, almost exactly similar to that...formations. While a two-fold classification (Lower and Upper Aravalli Groups) with a younger deep-water carbonate-free |
 | | Report (issue) |
| units and those in the structurally more simple upper block probably are part of the Pennsylvanian and...rocks Mesozoic rocks Tertiary intrusive rocks Upper Paleozoic rocks Tertiary sedimentary rocks Lower...Contact UPLIFT Fault Thrust fault Sawteeth on upper plate I.-Geologic map of part of west-central Colorado...downthrown side Dotted where concealed. Saw teeth on upper plaw FIGURE 2.-Geologic map of the area of a possible...the eastern part of the lower block, scattered outcrops of white to light-green quartzite, arkose, hornfels |
 | | Journal (article/letter/editorial) |
| whole-rock Rb - Sr isochrons from chlorite-grade phyllite outcrops is 310__+34Ma (2a). A similar R b - - S r...of the higher grade sequence is older than the upper Ordovician age (ca. 450 Ma) of the chlorite-grade...averages of samples fi'om chlorite and biotite grade outcrops, BG average of biotite granite samples with Rb/Sr...I 1 2 Distance (metresl Distance (metres) UPPER CARBONATE ON C-C' AND D Carbonate CONTACT ~...pre-Hercynian 87Sr/86Sr profile. a lower contact, b upper contact I I i i Carbonate 9 ~ I I I Carb'onate |
 | | Report (issue) |
| gional offices ----------------------Area and District offices -------------Earth Resources Observation...----------------Regional offices ----------------------District offices -----------------------Offices in other...greenstone of the Pumpernickel Formation in the upper plate of the Golconda thrust on the southeastern...gabbro sill intruded into gneiss, schist, and phyllite. Layering and foliation strike northeast and dip...mine extends northwest and in the Browns Canyon district is strongly mineralized with fluorite. Postore |
Phyllite outcrops, Gefrees, Bayreuth District, Upper Franconia, Bavaria, Germany