 | | Book | | Precambrian Geology, 14 PRECAMBRIAN GEOLOGY OF FINLAND KEY TO THE EVOLUTION OF THE FENNOSCANDIAN SHIELD...Precambrian Geology, 14 PRECAMBRIAN GEOLOGY OF FINLAND KEY TO THE EVOLUTION OF THE FENNOSCANDIAN SHIELD...University of Helsinki, Finland P.A. NURMI Geological Survey of Finland Espoo, Finland .. .. O.T. RAMO University...University of Helsinki, Finland ELSEVIER Amsterdam â Boston â Heidelberg â London â New York â Oxford............................15 7. The Vendian period and the Paleozoic era 15 8. Late events affecting the |  | | Report (issue) | | ____________________________ 1 2 2 5 7 7 9 9 11 13 14 14 15 16 16 18 22 22 22 23 23 26 27 27 28 28 30 31 Structural...___________________________ 10 7-9. Photographs of: 7. Chromite foliation in dunite at high angle to dunite-harzburgite...contact _________________________ 10 8. Deformed chromite-net texture in dunite __________________________________________..._______________ 12 13-19. Photographs of: 13. Chromite in dunite ___________________________________...______________ _____ _____ _________________ 14 15. Dunite dike in harzburgite ___________________________ |  | | Report (issue) | | ............................. 65 The Diagiuli Chromite Occurrence and Other Small Occurrences in the................................................... 15 Figure 5. Generalized geology, reduced-to-pole (RTP)...metavolcanic, metagabbro, and BIF. Dikes trending mostly north-northeast are also mapped in the region (black lines)...with granodiorite and gneiss units. The linear north-northwest magnetic anomaly highs correlate with....... 20 Figure 7. View looking north at the Guelb el Foulet chromite occurrence .................... | | | Report (issue) | | ............................. 65 The Diagiuli Chromite Occurrence and Other Small Occurrences in the................................................... 15 Figure 5. Generalized geology, reduced-to-pole (RTP)...metavolcanic, metagabbro, and BIF. Dikes trending mostly north-northeast are also mapped in the region (black lines)...with granodiorite and gneiss units. The linear north-northwest magnetic anomaly highs correlate with....... 20 Figure 7. View looking north at the Guelb el Foulet chromite occurrence .................... |  | | Report (issue) | | localities ............................. In pocket 15 Mineral map of the Bopolu quadrangle INTRODUCTION...by number (in general, progressive from south to north) if the locality is described in the text or table...the quadrangle and at a place about 2 kilometers north of Domamana in the northern part adjacent to an...yet been confirmed. Small grains of accessory chromite have been recognized in placer concentrates from...quadrangle. Although unknown amounts of such chromite have been incorporated in the alluvial deposits |  | | Report (volume) | | ............................... Fl 3 11 12 15 15 15 15 24 25 27 27 29 29 30 31 31 31 34 34 35 35 36...granitic gneiss and amphibolite, west wall of cirque north of September Morn Lake............................11-14. Photographs showing: 11. Orbicular gneiss, north side of lake, 2.6 km N. 50° E. of Martin Lake.....Creek basin............................... 25. Chromite deposits, Hellroaring, Silver Run, and Line Creek...district......................................... 26. North Star No. 1 workings............................ |  | | Report (issue) | | available in print to permit the average geologist in North America to obtain a real understanding of any one...which is found in publications not often shelved in North American libraries. The number of these omissions...deposit formation. As a result, the references in 15 of the bibliographies are for the most part in those...area (such as Elizabeth, Vermont, or Outokumpu, Finland). This does not mean that it would not be possible...countries is summarized as follows: BIBLIOGRAPHIES North America Wana damenm.seee Pals hate SNS une Winited |  | | Report (issue) | | ........................ 14 Hornblende andesite dike .................................................................................................. 15 Felsite dike ...................................................................................... 15 Ancha formation ...................................pebbles, a hornblende andesite dike, a vent breccia, and a felsite dike are probably older than the limburgite...Santa Fe embayment of the Espanola basin to the north and east. The "bedrock floor" is thus at the surface |  | | Journal (issue) | | 1. Map showing location of North Star Bugt Area. GEOLOGY OF THE NORTH STAR BUGT AREA NORTHWEST GREENLAND... KRINSLEY, ALLEN H. NICOL INTRODUCTION The North Star Bugt Area for purposes of this report includes...area adjacent to the former site of Thule. The North Star Bugt Area constitutes about 500 square miles... The history of exploration in the vicinity of North Star Bugt goes back as far as 1616 when WILLIAMBYLOTas...JOHN FRANKLIN.The ship North Star commanded by JAMES SAUNDERSwintered in North Star Bugt in 1849-1850 |  | | Report (issue) | | ·---·------·-··--------·--··--··-··-··----------·····--------· 15 Geochemistry of stream-sediment samples····--·--·-·------·-.............................................. 13. Dike rocks from the Golden Zone mine area.............................................................. 15. Rock and stream-sediment samples from the Golden...of the Chulitna River, at the Dunkle coal mine north of the West Fork, and on ridges and gravel bars...the district and adjacent and nearby areas to the north are found in reports by Moffit (1915), Wahrhaftig |  | | Book | | structure of diamond. Morphology and Composition of Chromite Macrocrysts and their Inclusions, Guaniamo Kimberlite...Formation The Buffalo Hills Kimberlite Province, North-central Alberta, Canada. Eclogitic, Peridotitic...Dunitic mantles. Kimberlite-and lamproite-borne chromite phenocrysts with "diamond-inclusion"-type chemistries...Upper mantle stratigraphy and thermal regime of the north central Slave Craton, Canada. Unique chemical features...isotopic data of kimberlites and related rocks from North of Yakutian kimberlite province (Russia). Kouznetsova |  | NovĂĄk, M., Prokop, J., Losos, Z., Macek, I. (2017) Tourmaline, an indicator of external Mg-contamination of granitic pegmatites from host serpentinite; examples from the Moldanubian Zone, Czech Republic. Mineralogy and Petrology, 111 (4) 625-641 doi:10.1007/s00710-017-0512-4 | Journal (article/letter/editorial) | | et al. 2013a). and an accelerating potential of 15 kV (for more details see e.g. Selway et al. 1999)...basis of Si = 6 yielded the sum of T + Z + Y cations >15 (indicationof Si deficiency and presence of TAl)...calculation on the basis of T + Z + Y site cations =15; ratio of Fe2O3 (min.) and FeO (max.) was calculated...Li-bearing samples were calculated with assumption: Li = 15 â (Y + Z + T). This approach is supported by the...(WDS) analyses involved an accelerating voltage of 15 kV, beam currents 10 nA and a spot size of ~5 ÎŒm |  | | Book (edition) | | world: in Australia, India, Pakistan, Quebec, Finland, Guyana, Venezuela, Brazil, Paraguay, Angola and...Chapter Chapter Chapter Chapter Chapter 11 12 13 14 15 16 II: Description of Carbonatites of the World...Heier (1961) Figure 15-9: Tanzania Geological Survey and N. J. Guest (1954) Figure 15-15: Koninklijke Nederlands...(1963) Figure 15-16: Zambia Geological Survey and after D. K. Bailey (1960). Figure 15-17: Zambia Geological...(1960) Figure 15-19: Malawi Geological Survey and M. S. Garson and W. C. Smith (1958) Figure 15-25: Malawi |  | | Report (issue) | | tungsten, copper and zinc-bearing skarns in western North America, 28 Mitchell, P. A., Silberman, M. L., and...Washougal mining district, Skamania County, Washington, 15 Shreiner, Alexander, Jr., and Suemnicht, G. A., Subsurface...Sinclair, B. D. Ryan 129 9. 10. 11. 12. 13. 14. 15. 16. 17. Possible nonsubduction associated porphyry...tungsten, copper and zinc-bearing skarns in western North America L. D. Meinert, Rainer Newberry, M. T. Einaudi...overlying thrust plates which are warped into a broad north-south trending antiform centered along Red Dog Creek |  | | Report (issue) | | biotite-quartz monzonite-gneiss Bryant's liouse. . north of FiE.3. Photomicrograph of biotite-quartz monzonite-gleiss...75 mile northwest of Bryant. ll3 XIV. Nelsonite dike cut by a small fault. . . .. tI6 XV. Polished specimen...Pho'tomicrogra"ph of hornblende nelsonite, B miles north of Lovingston IBZ X'ig. 3. Photomicrograph of hornblende... . . l. Outcrop showing contact between diabase dike ancl eabbro at Roseland. . .. . .. . . .. tr'ig...Detailed view of same outerop. X'ig. l. Diabase dike exposed in open cut on the American Rutile Company |  | | Report (issue) | | of the Grandfather Mountain Window and Vicinity, North Carolina and Tennessee By BRUCE BRYANT and JOHN...Chilhowee Group --------------------------- 45 Slices north of the Grandfather Mountain window ------------...Blue Ridge and Valley and Ridge belts in parts of North Carolina, Tennessee, and southern Virginia. 4. Geologic...Moun- 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12,13. 14. 15. 16-19. 20. 21. 22. 23. 24. 25. tain window --...layered biotite and hornblende-biotite gneiss cut by dike of light-colored granitic rock containing blocky |  | Theodore, Ted G., Blair, Will N., Nash, J. Thomas, McKee, E.H., Antweiler, J.C., Campbell, W.L. (1987) Geology and gold mineralization of the Gold Basin-Lost Basin mining districts, Mohave County, Arizona, with a section on K-Ar chronology of mineralization and igneous activity, and a section on implications of the compositions of lode and placer gold. Professional Paper 1361. US Geological Survey doi:10.3133/pp1361 | Report (issue) | | ---------------Episyenite ----------------------- l l 2 3 9 14 15 15 16 17 18 20 21 23 25 27 29 32 33 35 43 44 46 47...of cordierite ------------------------------------15. Thompson (1957) AFM diagrams for medium-pressure... partly chloritized, porphyritic biotite dacite dike containing septum of Cretaceous two-mica monzogranite-...Proterozoic veins at locality 735 in the Senator Mountain 15-minute quadrangle ----------------------------------42...porphyritic monzogranite of Garnet Mountain- ----------15. Analytical data from the Cretaceous two-mica monzogranite- |
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