 | | Book (volume) |
| camp of I.X.L. (Silver Hill), veins in granite and slateCopper, Gold, Lead and Silver minerals; SSW 18...toward S end of the Pine Nut Mts., area pegmatite outcrops Thulite (pink Zoisite), Topaz; extreme SE corner...Platinum. ELKO COUNTY CARLIN: area pegmatite outcrops in surrounding hillsRose Quartz; nearby, at...Silver minerals; area gravels, surfaces and outcropsCitrine, Rose Quartz, wonderstone; NW 8 mi....until the 1950’sGold, Lead, Silver; area rock outcropsRose Quartz. This mining dist. was located with |
 | | Book (volume) |
| fossils. There are no igneous or metamorphic rock outcrops in Indiana. The four great periods of glaciations... FREMONT COUNTY AREA, all Devonian limestone outcrops, gemstone quality⎯fossil corals and stromatoporoids... Logan, Trego, and Wallace counties. Regional outcrops of shale disgorge Selenite crystals. ANDERSON...bodies occurring in Mississippian limestone with outcrops predominantly in the very corner of Kansas⎯chert...Rocks⎯Pyrite concretions; d S 5 mi., in Cretaceous outcrops (banks) of the Smoky Hill R., in lignite beds⎯Amber |
 | | Book (volume) |
| fossils. There are no igneous or metamorphic rock outcrops in Indiana. The four great periods of glaciations... FREMONT COUNTY AREA, all Devonian limestone outcrops, gemstone quality⎯fossil corals and stromatoporoids... Logan, Trego, and Wallace counties. Regional outcrops of shale disgorge Selenite crystals. ANDERSON...bodies occurring in Mississippian limestone with outcrops predominantly in the very corner of Kansas⎯chert...Rocks⎯Pyrite concretions; d S 5 mi., in Cretaceous outcrops (banks) of the Smoky Hill R., in lignite beds⎯Amber |
 | | Book (edition) |
| accepted and understood, and usually recognizable on outcrops. It should be remembered that one cannot expect...uncrystallized equivalent of rhyolite or granite. Outcrops are always stacked into conchoidally or convexly...convexly bounded boulders. Generally, outcrops are not very showy; weathering dulls the surfaces, giving them...rhyolitic flows or in dark basalt formations. Outcrops weather darker, they show no layered type of structure...example. There is nothing very distinctive about outcrops of diabase; one would have to stop and chip to |
 | | Report (issue) |
| 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. . . . .... . . . 112 Older metamorphosed rocks (Virginia slate). . . . . . . .. . II2 Later intrusive rocks. . |
 | | Journal (article/letter/editorial) |
| C a m b r i a n Deposits. Above the ' Cambrian Slate-Belt', in the country between Bettws Garmon and...is especially prominent in the upper part of the slate-beds, notably near Bwlch Cwmllan and on Yr Aran...rich in manganese, chiefly in the form of 9 psilomelane. Near Beddgelert this ore has been worked a m...cleavage-planes of the tufts are sometimes coated with psilomelane and bladed manganite. I t is likely t h a t the...many places the accustomed eye can locate the outcrops of this series with reasonable accuracy, by noting |
 | | Book |
| 130 130 131 131 131 formation 132 Knife Lake slate General statement Lithology Microscopic character...53 Relations to other formations 153 Eleanor slate 154 Laurentian series Algonkian system 154 154...granite and gabbro 171 Virginia slate 172 Distribution 172 Slate 173 homstone resulting from the...the Biwabik formation Cordierite of the Virginia slate by the Duluth gabbro. Structure 174 I74 Structm-e...Contact metamorphism 200 Thickness Eove 200 200 slate Distribution Structure 200 201 Petrographic |
 | | Book |
| migmatite, and greenstone. The Arunta Complex, which outcrops widely in the Macdonnell and Harts Ranges of Central...fragments in the conglomerates suggest derivation from outcrops of the Hamersley Group to the north. One basalt...Systems 13 Present Southern Limit of % Wessel Gp. outcrops 2. South Nicholson & Malay Road Groups Roper...volcanicity is recorded in the overlying shale unit (now slate) which contains rare basalt flows in its basal portion...quartz-rich sand and mud (now quartzite, schist, and slate) accumulated with the dolomite. The Precambrian |
 | | Report (issue) |
| Valley and Ridge slate belt__________ West Virginia slate belt______________ Pennsylvania slate belt______________...belt______________ Other slate-bearing areas____________ Miscellaneous dimension stone____________ Gypsum and anhydrite...Introduction___________________________ Expanded clay, shale, and slate~---------Expanded slag__________________________..._______ _ 60. Distribution of marble, granite, and slate in the southern part of the Appalachian Region ...1945-64_________________ 191 66. Production of slate (crushed and broken stone), 1945-64___________________ |
