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| 1925. Issued separately August 17, 1925.) The district described is of considerable relief, according...folds. The Geological Survey has mapped the whole district on the six-inch scale, and published Sheets 55...traced the northern termination of the Carn Mairg Quartzite, and explained it by a theory which will be dealt...Little Limestone Honestones, etc. Perthshire Quartzite [E. B. Bailey's Ben Eagach Schist] Black Schist—carbonaceous...PERTHSHIRE TECTONICS : on opposite sides of the quartzite" (Q.J.G.S., 1917, p. 160). This statement means |
 | | Report (issue) |
| PREFACE The barytes deposits of the Cartersville district of Georgia are the most productive in the United...geology and barite deposits of the Cartersville district, Ga.: ·The Tradesman, pp. 35-37, May 22, 1910...in ten days of :field work in the Cartersville district. Georgia continues to lead the states in the production... . . . . . . . . . . . . 17 -1H Oarters·ville district ......................................... 19-125... . . . . . . . . . . . . . . . 22-23 Weisner quartzite ............................ :. . . . . . 23-25 |
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| most part schist and gneiss but also phyllite, quartzite, and crystalline limestone, all strongly folded...Only two contain appreciable amounts of residual dolomite; the remaining deposits contain an average of...alluvial overburden is thin between widespread outcrops, so all the deposits could be mined from open...for mining are massive replacements deposits in dolomite (Callaghan, 1933; Niinomy, 1925; Petraschek, 1932;...1930; Gale, 1913; and Hess, 1908), but also in dolomite or tuff (Faust and Callaghan, 1948; Callaghan |
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| __________________ Southeast of the Iron MountainsShady dolomite (Lower Cambrian).___________ Description-.. _...Cambrian) ___________________________________ Elbrook dolomite.______________________ Honaker dolomite_______...Holston Mountain fault._____-__-__--___--____-_ Outcrops of the fault._______________________ Overriding...Iron Mountain fault.________-__--__.__-___----_ Outcrops of the fault.__-_-__--_____---_---__ Overriding...family___________________ 75 Sections of Shady dolomite and Rome formation. _ _ _ Sections of Middle and |
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| Formation ............................ 10 Cheshire Quartzite......... ... ................... 11 DunhamDolomite... 25 PETROGRAPHIC STUDY OF THE KAOLIN AND THE QUARTZITE ...... 26 The kaolin . .........................examination ................ 27 •. The quartzite and cast of kaolinic quartzite ........... 27 Thin section analyses...23 .17. Outcrop of easterly dipping Cheshire Quartzite ............. 24 18. South face of Bushey pit...kaolin-bearing horizons occur within the Cheshire Quartzite' of' Lower Cambrian age. The formation consists |
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| CEORC!A A FIW N T!SP!ECF VIEW OF THE WEISNER QUARTZITE, NEAR CARTERSVILLE , GEOllGlA l'LA'lE I GEOLOGICAL...the Cartersville District, Bartow County, Georgia. An Exposure of Weisner Quartzite along the Western...Cartersville, Bartow County, Georgia. View of Weisner Quartzite near Cartersville, Bartow County, Georgia. Log...Cartersville District. Sections S'lowing Structural Geology ot the Cartersville District. Map Showing...the Distribution Manganese Ore in Cartersville District. Section of the Openings on the Blue Ridge Mining |
 | | Book |
| Phemister's Geological Excursion Guide to the ASSYNT DISTRICT OF SUTHERLAND byM.R.W. Johnson and I. Parsons...PHEMISTER'S GEOLOGICAL EXCURSION GUIDE TO THE ASSYNT DISTRICT OF SUTHERLAND NATURAL SCIENCES LIBRARY UNIVERSITY...txamination A. The Structural Units 1. The unmoved region or "Foreland" 2. The Moine Thrust belt 3. The Moines...Assynt, to illustrate Excursion 1 28 VII ASSYNT DISTRICT GUIDE Plate II Plate 111 Plate IV Coloured...3 40 Coloured Geological Map of the Knockan District, to illustrate Excursion 4 50 FIGURES IN TEXT |
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| Cambrian dolomite- ____________ Oxide ores in Erwin quartzite. ' _ _ __ Oxide ores in Shady dolomite _ Oxide...__________________ Johnson County ___ ___ _ Shady Valley district _________________________ Reynolds mine________...Continued. Johnson County Continued. Mountain City district ____ __________________ Taylor Valley mine___...Doe Valley mine______________1___________ Butler district ______________________________ Proffit prospe...___'. _ Carter County '. _ __ ________ Butler district _________________ __ _ __________ Elk mine __ |
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| sedimentary rocks locally are converted to marble, dolomite and various calc-silicate mineral assemblages...Mountain thrust lies between the Ordovician Eureka Quartzite and underlying Ordovician Pogonip Group and truncates...truncates west-dipping beds of Eureka Quartzite, demonstrating younger over older geometry, in contrast...reconstructions of the tectonic history of the region suggest that some geologic relations also may be...others, 1993); (2) significant tectonism in the region during the Late Jurassic Elko orogeny (Thorman |
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| ______________ _____ __ _______ __________ Addy quartzite __________________________________ ~ _________...F-3 3 3 TABLES Page TABLE 1. Analyses of Edna dolomite from Stevens County, VVash _______ F-12 2. Analyses...fine-grained clastics, and of lesser amounts of quartzite and dolomite, totaling at least 10,000 feet in thickness...Togo formation (oldest), Edna dolomite, McHale ·slate, Stensgar dolomite, and Buffalo Hump formation....above the Huckleberry formation lies ·the Addy quartzite of Early Cambrian age. These formations, together |
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| Eureka Quartzite B2 Ely Springs Dolomite B5 Silurian Laketown Dolomite B5 Devonian B8 Sevy Dolomite B8 Simonson...Simonson Dolomite B9 Guilmette Formation B9 West Range Limestone BIO Devonian and Mississippian Pilot...Limestone Bll Chainman Shale B12 Scotty Wash Quartzite B12 Pennsylvanian Ely Limestone B12 Cenozoic stratigraphy...aeromagnetic anomalies in part of the Great Basin region B25 9. Cross sections showing structural history...Seaman Range and vicinity as we compiled paleo-outcrops on the middle Oligocene unconformity. of the |
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| County . . . . . . . . . . . . · .23 Iron Springs district deposits . . . . . . . . . . . . . . . 23 Location... . . . . 31 9. Size and shape of Iron Springs district intrusions, from outcroppings and geophysical...porphyry, Iron Mountain. . 40 13. Iron-Springs district iron occurrences, Iron County . . . . . . . ....Washington County iron occurrences .84 30 Bull Valley district iron occurrences, Washington County . . . . .... . . .90 31. Pilot iron deposits, Bull Valley district, Washington County . . . . . . . . . . . .93 |
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| The Eureka Mining District Nevada By THOMAS B. NOLAN GEOLOGICAL SURVEY PROFESSIONAL PAPER 406 Prepared...Mountain quartzite ________________ _ Pioche shale _______________________________ _ Eldorado dolomite ___...Canyon shale ___________________ ·_____ _ Ham burg dolomite _________________________ _ Dunderberg shale ...group _____________________________ _ Eureka quartzite ___________________________ _ Hanson Creek formation...the Eureka mining district, Nevada. 2. Geologic sections of the Eureka mining district, Nevada. 3. Geologic |
 | | Journal (article/letter/editorial) |
| . . . . STRATIGRAPHY . . . . . III. OUTCROPS IV. PITCH V. AND STRUCTURE O F FORMATIONS...PLATES 110 113 115 116 I. INTBODUCTION. Our district (PL II) includes an exceptionally beautiful tract...length as Glen Lyon. The southern limit of the district approximately follows the divide between Glen...sea-level. Exposures are good throughout most of the region. Drift offers no serious difficulty to satisfactory...satisfactory mapping except in one critical region, near the south-western corner, north-east of Creag Ard (CA |
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| CHARLES D. WALCOTT, DIRECTOR GEOLOGY ASPEN MINING DISTRICT, COLORADO WITH ATLAS JOSIAH EDWARD SFURR SAMUEL...Parting Quartzite series Carboniferous formations 9 13 22 Leadville limestone 22 The dolomite The blue...structure 130 131 Description of sections Aspen district 127 128 Faulting Resume 120 125 Description...of sections.. Resume of structure in the Aspen district 137 CHAPTER III. 143 Description of mines...Faulting of Cambrian quartzite and II. _ _ 1 _ 70 _. 78 Silurian dolomite on hill on east side |
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| Other materials of economic interest. _________ Dolomite _---_______-_____-_____-_-____ "Terrazzo". _-..._______________ Chapter D. Geology of the Felch Mountain district, by Carl A. Lamey Introduction. ___________--...Chocolay group___ -----------------------Sturgeon quartzite-___________-----__--Occurrence and characteri...-_Petrography _______________----_-_Randville dolomite,____________----__--Occurrence and characteri...--------------Ferruginous quartz-mica schist and quartzite __________-__-_--------Feldspathic quartz-mica |
 | | Journal (article/letter/editorial) |
| Keywords: Baraboo interval Dake Quartzite Laurentia The Statherian Baraboo Quartzite (1710–1650 Ma) is present...quartzites outcropping across the southern Lake Superior region. Collectively, these quartzites are known as Baraboo...Baraboo interval stratigraphy above the Baraboo Quartzite in the Baraboo Ranges is unresolved, limiting...unconformity. The lower sequence comprises the Baraboo Quartzite, Seeley Slate, and Freedom Formation. The upper...upper sequence comprises the Dake Quartzite and Rowley Creek Slate. The depositional age of the upper sequence |
 | | Report (issue) |
| of the Cartersville district has been worked out by the senior writer. The district is in the southeastern...unaltered sediments consisting of quartzite, limestone, shale, and dolomite, all Paleozoic, in the northwestern...area. The Paleozoic rocks outcrop in the valley region to the west. In descending order and as at present...follows: Knox dolomite. Gonasauga and Rome formations. Beaver limestone. Weisner quartzite. All these...these formations except the Knox dolomite belong in the middle or lower Cambrian, and it is probable that |
 | | Report (volume) |
| 4 Age 8 Kinnikinic Quartzite 8 10 Distribution Character 10 Age 10 Ella Dolomite ll Distribution ll Character...siltstone 14 Ordovician or older quartzite sequences 14 Clayton Mine Quartzite 15 Distribution 15 Character...Interbedded siltstone and quartzite 21 Character 21 Stratigraphic relations and age 22 Quartzite of Happy Hollow...Creek-Poverty Flat sequence 23 Rob Roy sequence 24 Quartzite and siltstone of upper Cash Creek 26 Ordovician...27 Problems of correlation and age 28 Bayhorse Dolomite 28 Distribution and general features 28 Character |
 | | Journal (article/letter/editorial) |
| from the Ards Quartzite through the Creeslough Group (1,OOO ft) to the Lackagh Quartzite (300 ft) is disproved...is clear that the Lackagh Quartzite is a repetition of the Ards Quartzite, and the exposed thickness...Meenalargan anticlinal zone, with its periclinal quartzite outcrops separated by sheets of appinite-amphibolite...Semipelites (this paper) Semipelitco of s. Loughros Quartzite of s. Loughros Rosbeg stmipelitea Glenieraragh... Gubbin Hill and Derryveagh Cor (Crohy) Quartzite Quartzite trains ..................... Falcarragh |
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| deposits.......... Antletam quartzite................................. Tomstown dolomite.......................residual clays derived from the decay of the Tomstown dolomite and Waynesboro formation (shale and limestone)...The district was inactive in 1941. No estimate of the reserves of manganese ore in the district can be...area, carried on. Prom the World War to 1941 the district has been largely inactive, although some prospecting...in residual . clays derived by weathering from dolomite, limestone, and shale I/ Stose, G. W., Miser |
 | | Journal (article/letter/editorial) |
| rocks—Belt series Subdivisions Lemhi quartzite Swauger quartzite Age of the Lemhi and Swauger quartzites...Kinnikinic quartzite Saturday Mountain formation Laketown dolomite Jefferson dolomite Grand View dolomite Three...Jefferson dolomite along a ridge between Mahogany and Rock creeks 4.—Section in Kinnikinic quartzite in the...1130 5.—Folds in Brazer limestone and Jefferson dolomite 1132 6.—Contorted Brazer limestone 1133 Downloaded...quartzites 12.—Photomicrographs of dolomite and associated quartzite 13.—Photomicrographs of Devonian and |
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| system.._______________________ ______ Tintic quartzite. __-__-_---_---_-___________ Ophir formation_...Teutonic limestone._________________________ Dagmar dolomite.__________________________ Herkimer limestone...__------___-____________ Bluebird dolomite.________________________ Cole Canyon dolomite...___-_____-_-___-____...Opex formation______--_-_-__--___________ Ajax dolomite-_____________________________ Ordovician system...Unconformity at top of Opohonga limestone Fish Haven dolomite..______________________ Ordovician, Silurian, |
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| Chlorite Amphibole Pyroxene Olivine Calcite & dolomite Iron oxides & sulphides Other minerals Granite...that are not attached to the underlying bedrock . Outcrops are visible showings of bedrock that project ...overburden . In many parts of Manitoba , the best outcrops are found around lakeshores where over burden...water . Geologists are constant ly searching for outcrops , which they record on geological maps to show...Fig . 3 22 Rice Lake: RHYOLITE, FELDSPATHIC QUARTZITE 4 Greer Lake: 23 5 Ryerson Lake: greenstone |
 | | Journal (article/letter/editorial) |
| sediments General aspect Border breccia deposits Quartzite conglomerates General considerations Dimensions...enters the Triassic basin the writer looked for outcrops of Triassic sediments for at least half a mile...are quartzite and sandstone pebbles, generally subrounded to subangular, and limestone or dolomite pebbles...consist of subangular to angular limestone and dolomite fragments in a red, sandy matrix. One of these...granite and gneiss and minor amounts of basalt.'quartzite, sandstone, and limestone fragments. In addition |
