 | | Report (volume) | | Proterozoic Geology of the Brady Butte area, Yavapai County, Arizona U.S. o crq oo no GEOLOGICAL SURVEY... Proterozoic Geology of the Brady Butte area, Yavapai County, Arizona I By PHILIP M. BLACET I U.S. GEOLOGICAL...1937Proterozoic geology of the Brady Butte area, Yavapai County, Arizona (U.S. Geological Survey Bulletin 1548)...diorite ___________________________________ 28 Texas Gulch Formation ____________________ i _________... Geologic map of the Brady Butte area, Yavapai County, Arizona ______________________ 2. Generalized |  | | Report (issue) | | parautochthonous backbone bounded on the northeast by the gently northeast-dipping Boundary Canyon fault and...Quartzite. The two formations are involved in broad, northeast-trending folds, each extending across the full...the Keane Wonder fault. Exposed in the southeast corner of the map area is a segment of a zone of Mesozoic...broken, but not greatly extended by numerous north-northeast striking normal faults. Where the Boundary Canyon...upper part of the Stirling Quartzite overlie staurolite-bearing pelitic schist of the lower part of the |  | | Report (volume) | | Geology of the Hill City Quadrangle Pennington County South Dakota A Preliminary Report GEOLOGICAL SURVEY... Geology of the Hill City Quadrangle Pennington County South Dakota A Preliminary Report By JAMES C. RATTE...pocket FIGURE; 1. Structural diagrams in area of northeast-trending cross folds_ B9 TABLES Page TABLE 1...GEOLOGY OF THE HILL CITY QUADRANGLE PENNINGTON COUNTY, SOUTH DAKOTA A PRELIMINARY REPORT By JAMES C....square miles of Harney Peak Granite in its southeast corner. Additional sheets of pegmatitic granite, including |  | | Report (volume) | | the Henry's Lake Wilderness Study Area, Fremont County, Idaho U.S. GEOLOGICAL SURVEY BULLETIN 1718-D...the Henry's Lake Wilderness Study Area, Fremont County, Idaho By R.G. TYSDAL and D.M. KULIK U.S. Geological...the Henry's Lake wilderness study area, Fremont County, Idaho. (U.S. Geological Survey bulletin ; 1718)...Lake Wilderness Study Area (ID-035-077), Fremont County, Idaho. CONTENTS Summary Dl Abstract Dl Character...of Henry's Lake Wilderness Study Area, Fremont County, Idaho D2 2. Geology, mineral resource potential |  | | Report (issue) | | Geologic Map of Windy Peak 7.5' Quadrangle, White Pine County, Nevada By Elizabeth L. Miller1 , Phillip B. Gans...Carrollton, Texas 75006 1994 INTRODUCTION The Snake Range is located in White Pine County, east-central...easily visible from Highway 50 which traverses the northeast end of the Windy Peak quadrangle. The base of...interpret as a minimum age for its intrusion. Staurolite is widely developed in the contact aureoles of...1976, Geology and mineral resources of White Pine County, Nevada - Part 1., Geology: Nevada Bureau of Mines |  | | Journal (article/letter/editorial) | | Ore Knob copper mine in the eastern part of the county has produced chalcocite, bornite, pyrite, pyrrhotite...Mountain. BURKE—Three diamonds have been found in this county. One specimen is at the State Museum in Raleigh...reported from this county. CAMDEN—The Pamlico Formation characterizes this coastal plain county. Shell beds...this area. CHEROKEE—Gold, silver, galena, and staurolite xls have been found between Valleytown and Vengeance...Little Buck Creek. Much corundum is found in this county, usually associated with the large peridotite masses |  | | Report (issue) | | -Garnet zone _______-_-----------------------Staurolite zone_____._--_----------------------Graywacke-shale...Florence SE and Iron Mountain SW quadrangles, Florence County, Wis. 2. Map showing geology of Precambrian rocks...Florence East quadrangles, Florence County, Wis., and Iron County, Mich. 3. Geologic map showing lithology...associated strata in Florence mine area, Florence County, Wis. 4. Generalized geologic map and sections...geologic map of area near Keyes Lake, Florence County, Wis. 7. Aeromagnetic contour map of the Florence |  | | Report (issue) | | and western Stearns counties. . . . 30 Morrison County .................................. 132 Stearns... . . . . . . . . . . . . . . . . . . . 49 Todd County ...................................... 49 Morrison...Granite outcrop at Meyers Quarry near Pierz, Morrison County, showing horizontal jointing B. Inclusions of dark...granite in pink granite at Gravelville, Morrison County. . . . . . . . . . . . . 34 IV. A. Granite exposures...Mille Lacs County B. Granite exposures along Hay Creek, a branch of Snake River, Kanabec County. . . . |  | | Report (issue) | | Northwestern biotite zone Northwestern garnet zone Staurolite zone- B Pegmatitic segregations Pseudodiorite...the outcrop of Nottely Quartzite in the southeast corner of ths Persimmon Creek quadrangle (Van Horn, 1948...in the extreme southeast corner, and garnet, biotite, amphibole, and staurolite in much of the intervening...intervening area. Staurolite is restricted to thin strata believed to have favorable composition. Kyanite is...the southeast boundary. Strata of the southeast corner of the mapped area dip consistently southeast at |  | | Report (volume) | | Geology of the Chepachet Quadrangle Providence County Rhode Island By ALONZO W. QUINN CONTRIBUTIONS...geologic map of the Chepachet quadrangle, Providence County, Rhode Island____-_____________._____ In pocket...GEOLOGY OF THE CHEPACHET QUADRANGLE PROVIDENCE COUNTY, RHODE ISLAND By ALONZO W. QUINN ABSTRACT Tbe...epidosite. These two groups are metamorphosed to the staurolite-almandine subfacies of the almandine-amphibolite...Survey. The Chepachet quadrangle, near the northwest corner of Rhode Island, is one of the highest parts of |  | | Journal (article/letter/editorial) | | Sciences, Southern Methodist University, Dallas, Texas, 75275, USA ABSTR ACT I will consider mainly geothermobarometry...rocks, garnet, mica, sillimanite, staurolite, metamorphism, Maine, USA. Introduction I thank the Mineralogical...*Present address: 855 Elliott St., Longmont, CO 80501, USA { Hallimond Lecture, 2002 DOI: 10.1180/0026461046810167...of M2 is psuedomorphs after andalusite and/or staurolite. M3 (~385 Ma) is the major event shown by the...et al., 1988), and involves the sequence staurolite, staurolite-sillimanite, sillimanite-muscovite at highest |  | | Report (volume) | | traces a sinuous path from southwest to the northeast corner of the State. The Scotland Schist, considered...across eastern Connecticut from southwest to northeast (fig. 3). East of this axis, the Scotland was...(Pease, 1972) into two formations separated by the northeast-trending Eastford fault. Strata 4 northwest of...biotite schist commonly containing garnet and staurolite and rarely containing kyanite. The metasiltstone...has not been recognized north of the southeast corner of the Halls Pond area (fig. 6), where the member |  | | Journal (article/letter/editorial) | | Texas mineral locality INDEX Whereas Texas is well known for its vastness, cattle industry, and oil...I T S T O P O G R A P H Y A N D G E O L O G Y , Texas, the second largest state, has produced relatively...famous localities. A s this article will show, Texas has had—or currently has—nu merous mineral occurrences...produce good specimens; yet when specimens from Texas are sought in collections and dealers' stocks, few...some basic facts that help explain the situation. Texas has very little federal land in its mineralized |  | | Report (issue) | | period of folding producing tightly-appressed, northeast-trending folds in the rocks of pre-Silurian age...of igneous intrusion that locally deformed the northeast-trending folds in the pre-Silurian rocks into...'... 221 Other minerals ................ 222 Staurolite .............'.. 222 Chloritoid ...............Franklin County, Maine, and the remainder lies in Oxford County, Maine. The southeast corner of the ...particularly valuable. One extends from the southwest corner of the quadrangle north to Lincoln Pond, and the |  | | Report (volume) | | in the drainage basin of Knob Creek, Cleveland County, North Carolina, 3. Color of monazite__-_-__-_...other minerals, including xenotime, magnetite, staurolite, tourmaline, spinel, pyrite, kyanite, corundum..._---_--_--- -do.- -- Tourmaline: Sillimanite: Staurolite: Eutile: Trace IT6 CONTRIBUTIONS TO ECONOMIC...rutile______________ Magnetite, ilmenite____________ _ Staurolite, spinel _______________ Sillimanite____________________________... Data on the size distribution of magnetite, staurolite, sillimanite, and garnet are too few to be representative |  | | Journal (article/letter/editorial) | | AREA The area under investigation is north and northeast of the Beartooth Mountains, and east of the Crazy...from its type locality on Hell Creek, Garfield County, Montana, to the area of the present study. The...from its type locality on Tullock Creek, Bighorn County, Montana, almost as far as the Crazy Mountain syncline...formation by Simpson (1937), to Polecat Bench, Park County, Wyoming. The series of massive sandstones above...Creek at its type locality on Hell Creek, Garfield County, Montana. The lower member consists of fine-grained |  | | Journal (issue) | | and are particularly handsome in the north-west corner of Isuamiut (loc. 3). Here a dark rust-coloured...magma series, may also be observed in the northeast corner of the large island of the Anarssuit group...would prove even more difficult. At Equtit garnet-staurolite schists occur, and gneiss in all the three Satuarssuit...An exception to this generalization is the northeast corner of Manitsoq with rock types reminiscent of...of Equtit, south of Anarssuit, touching the northeast corner of Manitsoq, west of Runde Ejland (it is not | | | Journal (issue) | | and are particularly handsome in the north-west corner of Isuamiut (loc. 3). Here a dark rust-coloured...magma series, may also be observed in the northeast corner of the large island of the Anarssuit group...would prove even more difficult. At Equtit garnet-staurolite schists occur, and gneiss in all the three Satuarssuit...An exception to this generalization is the northeast corner of Manitsoq with rock types reminiscent of...of Equtit, south of Anarssuit, touching the northeast corner of Manitsoq, west of Runde Ejland (it is not |  | | Field Trip Notes | | "5 — Q- porphyroblastsj (4) biotite-garnet-staurolite schist^ and (5) biotite-garnetsillimanite schist...metamorphic zones - the chlorite, biotite, garnet, staurolite, and sillimanite zones. For those who prefer...metamorphism increase easterly, attaining the staurolite zone in central Vermont. Still further east the...Appalachian Highlands trends north - south or northeast-southwest. The principal times of deformation...the dip has been determined), mostly trending northeast or north; these characterize the entire southern |  | | Report (volume) | | Black. (F) The Reany Creek Formation, Marquette County, Michigan, by Willard P. Puffett. (G) The Aguada...Formation in the southeastern Kaiparowits region, Kane County, Utah, by Fred Peterson. (K) Summary of Cretaceous...Paleozoic formations of the Mountain City area, Elko County, Nevada, by R. R. Coats________________________________________...City and Owyhee quadrangles, Elko County, Nev., and Owyhee County, Idaho_____ __ 2. Kodiak and adjacent.......-........-.-. Early Permian (Wolfcamp west Texas.-..-------------------- Age changed from Permian |  | | Book (edition) | | MARIN COUNTY FREE LIBRARY 3 1111 00289 4184 \ I s Fifth Revised Edition A complete, state-by-state...enthusiastic amateurs alike had not gone out to every corner of North America, discovered the rich gem resources...your specimen on the spot by chipping away a small corner of it. If you don't want it, leave it for someone...a gun," writes a Colorado collector. "As far as Texas is concerned," says a Texan, "the legislature, prodded...material has already been picked up, watch for a corner of rock sticking inconspicuously from the ground |  | | Report (issue) | | investigation. It has already proven of value in Fannin County and will, it is anticipated, prove equally useful...quadrangle lies mainly in Fannin County, Georgia, but includes part of Cherokee County, North Carolina, and part...future exploitation are marble, talc, iron ore, staurolite, kyanite, refractory schist, quartz, slate, quartzite...----- ~~~~~~~~~~~~~~ Garnet-mica schist __ _ Staurolite schist --------------------------- ___________...--------------- __ ------------------------ 12 7 Staurolite ----------------------------------- ___________________ |  | | Journal (article/letter/editorial) | | and Kaniae studied the emery deposits in the northeast corner of the Cortlandt seriesand concluded that...areal Cortlandt series area which transects the northeast-west ovate in an and crops out Manhattan schist...surmetamorphics. the strike of northeast regional mile on the northeast, of a for three-quarters except... Other accessoryminerals include tourmaline, staurolite, sillimanite, apatite, kyanite, zitcon, zoisite...high soda content, forms a separate mass to the northeast of the basic areal no mutual field relations with |  | | Report (issue) | | characteristics) furnished by Behrendt and Wotorson. Northeast-trending hills and ridges as much as 1,000 m high...biotite. The granodiorite gneiss has a predominant northeast trend. Granitic gneiss Granitic gneiss (gng) is... Schist Several large lenses of garnet- and staurolite-quartz-mica schist (s) occur within the granitic...form bare domes that very rarely exhibit a faint northeast-trending foliation. Small pegmatite dikes, and...nonmagnetic, and are present in the extreme northeast corner of the Bopolu quadrangle. The diabase dikes |  | | Report (issue) | | topographic quadrangles that have a common corner 3 km east-northeast of Harney Peak (fig. 1). Northwest of...been mapped by Ratte and Wayland (1969). To the northeast, in the Mount Rushmore quadrangle, the mapping...for metamorphic zones are: GAR garnet, STAUR staurolite, and SILL sillimanite. Dotted lines are isograras...shape. Abundant boudinage structures in schist northeast of Custer, on the southern flank of the dome,...increases in the granite and pegmatite region. The staurolite isograd crosses the north part of figure 1. The |
|
