 | | 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 |  | Dalton, Hayden, Giuliani, Andrea, Phillips, David, Hergt, Janet, Maas, Roland, Matchan, Erin, Woodhead, Jon, O'Brien, Hugh (2020) A comparison of geochronological methods commonly applied to kimberlites and related rocks: Three case studies from Finland. Chemical Geology, 558. 119899pp. doi:10.1016/j.chemgeo.2020.119899 | Journal (article/letter/editorial) | | kimberlites and related rocks: Three case studies from Finland Hayden Dalton, Andrea Giuliani, David Phillips...kimberlites and related rocks: Three case studies from Finland, Chemical Geology (2018), https://doi.org/10.1016/...kimberlites and related rocks: three case studies from Finland Hayden Dalton1, Andrea Giuliani1,2, David Phillips1...Zurich, of 2 Geological Survey of Finland, P.O. Box 96, Espoo, Finland re -p 3 ro Clausiusstrasse...and related rocks - Rb-Sr phlogopite, U/Pb perovskite and 40Ar/39Ar phlogopite. We selected minimally altered |  | Craddock, John P., Anziano, Jennifer, Wirth, Karl, Vervoort, Jeffrey D., Singer, Brad, Zhang, Xifan (2007) Structure, geochemistry and geochronology of a Penokean Lamprophyre Dike Swarm, Archean Wawa Terrane, Little Presque Isle, Michigan, USA. Precambrian Research, 157 (1) 50-70 doi:10.1016/j.precamres.2007.02.010 | Journal (article/letter/editorial) | | geochemistry and geochronology of a Penokean Lamprophyre Dike Swarm, Archean Wawa Terrane, Little Presque Isle...mechanical twins in dike magmatic calcite (ÎŽ18 O = â21.93, ÎŽ13 C = â4.53) and dike-margin hydrothermal...calcite (ÎŽ18 O = â9.72, ÎŽ13 C = â3.76) veins. Phlogopite from the lamprophyres yield an 40 Arâ39 Ar plateau...Neoproterozoic). The lamprophyre dikes strike eastâwest and northâsouth in this small (3 km2 ), complex outcrop. Analysis...calcite in the EâW dike (n = 89 grains, 26.97% NEVs) reveals a sub-horizontal dike-acute shortening strain |  | | 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 |  | | Book | | Brazil: Preliminary studies. 26 The Complete Phlogopite-Tetraferriphlogopite Series in the Catalao-I...Formation The Buffalo Hills Kimberlite Province, North-central Alberta, Canada. Eclogitic, Peridotitic...subcontinental lithosphere samples in an olivine-phlogopite-carbonate magma. Helmstaedt, H.H., Harrap, R...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 |  | | Report (issue) | | Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product...only on map of distribution of dikes.) Te, mafic dike 15 to 20 cm thick contains 60 percent or more xenoliths...outcrop of Water Island Formation. Cuts a diabase dike that is interpreted to be unit Td but could be unit... Tonalite composed of interstitial quartz (10 to 15 percent), subhedral, strongly and complexly zoned...amphibolite facies assemblages. Also toward the north, many dikes carry the same penetrative cleavage |  | Woodland, A.B., Kornprobst, J., McPherson, E., Bodinier, J.-L., Menzies, M.A. (1996) Metasomatic interactions in the lithospheric mantle: petrologic evidence from the Lherz massif, French Pyrenees. Chemical Geology, 134 (1) 83-112 doi:10.1016/s0009-2541(96)00082-4 | Journal (article/letter/editorial) | | massif. Traverse I contains a garnet-pyroxenite dike, along with homblendite dikele.ts which cut harzburgite...contain an anhydrous gamet-pyroxenite dike and a homblendite dike in lherzolite, respectively. There is...at the scale of < 5 cm. Further distant, up to u 15 cm, pervasive overprinting gives way to a zone where...adjacent to a thick anhydrous garnet-pyroxenite dike. Successive overprinting of one metasomatic event...occurrence of hydrous phases such as amphibole, phlogopite, and apatite. Such âmodalâ metasomatism contrasts |  | | Report (volume) | | 276046 1 1 1 2 2 2 3 4 5 7 9 10 10 11 12 33 13 15 15 1C 16 17 17 19 19 20 20 22 22 23 29 30 31 31 32...tunnel________________________ Probable tonnage of tin-bearing dike above the level of Cassiterite Creek___ ______________________...Probable extent of the tin deposits of the Cassiterite dike beneath the level of Cassiterite Creek____________...east of Lost River___ V. A, Workings on Cassiterite dike on east side of Cassiterite Creek and on the Greenstone...Cassiterite and wolframite replacing Cassiterite dike; B, Cassiterite vein from Ida Bell dike_______________ |  | | Journal (article/letter/editorial) | | magnetite as those figured by Vincent (1960, pi. 135,fig.15); (2) the mechanics by which the 2FeOTiO 2 in the...syenite gneiss 5. Hornblende granite gneiss 83-3 15-3 Fe,O, . 921 5-7 â 2-2 9510 94-4 4-7 â...37, 38 53 I3O«. 130c, 45, 242, 99 74, 75, 265 12, 15, 23, 188 71,72,73 41, 52, 119, 200, 199, 311 meagre...subordinate border facies of gabbroic anorthosite gneiss. North of Carthage there is a small lense of anorthosite...more mafic-rich facies of the anorthositic series north of Carthage, however, show (Table 4, l-\b) increasing |  | | Report (issue) | | III IV CONTENTS 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. Amygdaloidal basalt.... . . . . . . . . . . . . . . . . . . . . . . . .15 Conformable contact between the Water Island and.... . . . . . . . . . . . . . . . . . . . . . . . .15 Conformable contact between the Water Island and.... . . . . . . . . . . . . . . . . . . . . . . . .15 Foliated and contact-metamorphosed volcanic conglomerate.... . . . . . . . . . .18 Gently dipping tonalite dike intruding vertical beds of the Mandal Member . |  | Hoernle, Kaj, Tilton, George, Le Bas, Mike J., Duggen, Svend, Garbe-Schönberg, Dieter (2002) Geochemistry of oceanic carbonatites compared with continental carbonatites: mantle recycling of oceanic crustal carbonate. Contributions to Mineralogy and Petrology, 142 (5) 520-542 doi:10.1007/s004100100308 | Journal (article/letter/editorial) | | radiogenic isotopic 521 Fig. 1 Map of the eastern North Atlantic showing the Cape Verde and Canary Islands...a shear zone cutting the intrusive. The Camille dike on SaÌo Vicente also has higher MgO at the margins...(13) 0.703215 (07) 0.703216 (07) 0.703317 0.0017 (15) 0.70331 0.70324 0.70323 0.70321 0.70322 0.70319...512891 0.106 (07) 0.512929 (05) 0.512934 0.088 (15) 0.512933 0.075 (04) 0.512926 0.079 (05) 0.512823...coast, Pensamento in the south and Arruela in the north. The carbonatites cut Miocene and older, primarily |  | | Report (volume) | | dikes_______________________________________________ Cassiterite dike _________ ------_____________________________ L...m 1 2 5 5 5 6 6 6 7 8 9 9 9 10 10 11 12 12 13 15 15 15 17 17 19 20 20 21 22 24 · 25 31 31 36 36 38 40...Photomicrograph of pyrite in greisen, 365 leveL____________ 15. Photomicrograph of kaolinized greisen containing...from an altered rhyolite porphyry dike known as the Cassiterite dike. The main ore minerals are cassiterite...reserves of tin and tungsten ore are in the Cassiterite dike. The reserves classed as measured and indicated |  | | Journal (article/letter/editorial) | | metamorphism of the Strath Suardal dolomite appear on the north-east slopes of Ben Suardal and are there seen in... churchyard and near the loch outlet 350 yards north of this position. In the old marble quarries enveloped...has yet been recorded from this horizon. Farther north, within the mass of the Beinn na Caillich granite...Prospect, Kilchrist (loc. A, sub-locs, a~d, fig. 15). 2. At the contact of a dolomite island in the granite...development at edges of a pre-granitie dolerite dike at Camas Malag (loe. G a): a diopside(Di)-cuspidine(Cu)-magnetite |  | | Journal (article/letter/editorial) | | Distribution of Archean Rare Metal Pegmatites in the North Pilbara Craton, Western Australia MARCUS T. SWEETAPPLEâ ...Abstract The Pilbara pegmatite province in the Archean North Pilbara Craton contains at least 120 pegmatite deposits...East Pilbara granite-greenstone terrane of the North Pilbara Craton. They tend to be clustered along...Tabba Tabba, Strelley, Pilgangoora) are along a north-northeastâtrending corridor that is within one ...been identified. Although granitic rocks of the North Pilbara Craton were emplaced over an 800 m.y. period |  | | Journal (article/letter/editorial) | | series General statement Plutonic rocks Alkaline dike rocks Optical and chemical properties of minerals...and stocks Cape Horn ring dike Parks Brook ring dike Devils Slide ring dike Pilot Range complex Hastingsite-riebeckite... granite ring dikes Conway biotite granite ring dike Screens Syenite stock Hastingsite-riebeckite granite...latitudes 44° 45' and 44° 30' and by longitudes 71° 15' and 71° 30' (Fig. 1). The area is easily accessible...south and draining the mountainous regions to the north. The area to the south is drained by a complex network |  | | Report (issue) | | ................................................ 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 .......Geologic units shown here are described in figure 15 ................................................ | | | Report (issue) | | ................................................ 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 .......Geologic units shown here are described in figure 15 ................................................ |  | | Report (issue) | | of gem tourmaline, 48-49 8 Metamorphic rocks Dike rocks Other rocks 2. 5 5 6 6 General features...crystal. B, Crystal fragments of gem 11 11 12 12 13 15 15 16 16 16 18 18 19 21 21 22 24 24 25 26 27 29 30...Mountain 23 6. Section through west tunnel, North Star mine 7. 8. 9. 10. 11. 12. 13. 14. 49 49...matrix specimen from richest gem-bearing part of dike, Pala Chief mine 16. 17. Photo of sharply layered...granitoid rocks Photo of fine-grained granitoid rocks 15. pegmatite 36 :!S 62 68 70 20. Idealized sections |  | | Report (issue) | | DJST., DeKALB COUNTY, GEORGIA, SHOWING PEGMATITE DIKE IN MICA SCHIS'.r. FRONTISPIECE GEOLOGICAL SURVEY...15th Dist., DeKalb County, Ga., showing pegmatite dike in mica schist Frontispiece PLATES FACING PAGE.... . . . . . . . . . III. A. Irregular pegmatite dike cutting biotite gneiss (Carolina), roadside exposure...Horizontal pegmatite cut and slightly displaced by trap dike, Lakewood, Fulton County, Ga......................Decomposed mediuin- and fine-textUTed ·pegmatlite dike, roadside outcrop near Jefferson, Jackson County |  | | Report (issue) | | as seen down the valley of the Rio Grande from north of Weminuche meadows, San Cristobal quadrangle....of the area and by 1909 the field mapping of nine 15-minute quadrangles was completed. As shown in the...Lamprophyres- ___________^-______-_--__-___ Other dike rocks_.__________________________ Introduction ...Cristobal quadrangle and to the north and east_ ____________________________ North of Wagon wheel Gap _ ________...FIGURE 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. |  | | Report (issue) | | porphyry and rhyolite dikes _______ Andalusite aplite dike.__________________ Trachyte(?) dike__________________...Porphyritic andesite dikes_______________ Olivine andesite dike.___________________ Contact effects of dikes_________...Photomicrograph of contact between dike and hornfels_________________________ 15. Photomicrograph of microperthite...Photomicrograph of plagioclase phenocryst in andesite dike.______________________ 28. Map of Aravaipa Valley...by parallels 32°45' and 33°00' and meridians 110°15' and 110°30', and has an area of about 250 square |  | | Report (issue) | | correlation.................. 15 Chinle formation......................... 15 Definition and areal extent...Local features ...................... . 73 Moenkopi dike .......................... . 101: Mesaverde formation...Fort Defiance, Ariz.; B, Chinle formation 2 miles north of Tyende, Ariz_._ 47 XII. A, C1·oss-bedded Navajo...XX. ·A, Dike extending from a volcanic neck at ·Porras Dikes, Ariz.; B, Volcanic neck, north end of Porras...Defiance monocline at Hunter Point, Ariz., looking north; C, Comb monocline near Marsh Pass, Ariz. __ .____ |  | | 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 |  | 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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