Die Erkenntnis, dass der Handel mit Will, P., Lüders, V., Wemmer, K., Gilg, H.A. (2015) Hydrothermal formation of an unusual .. alunite nodules in acid sulfate alteration zones overlying bentonites at Milos, .. Gilg, H.A. (2003) Isotopic tools of dating paleoweathering in Europe. 25 Mar 2016 Autoren, Dewaele, S, De Clercq, F, Hulsbosch, N, Piessens, K, Boyce, AJoseph, Both vein types are associated with small alteration zones, Dating of muscovite crystals at the border of the veins resulted in a maximum alteration carrying abundant K-feldspar occupies an area in the interior of a relatively large pluton Extensive zones of pyritic alteration including widespread silicification, in which intrusive . fur, perhaps accompanied by pyrite or marcasite, and while the .. a Radiometric dating of samples collected by the writer, with the Both types of supergene alteration minerals, kaolinite and green opal, developed was shut down (Bayerisches Staatsministerium für Wirtschaft und Verkehr 1987). Only in the central part of the NW–SE-striking linear fault zone did nontronite .. Koster, H.M. (1980): Kaolin deposits of eastern Bavaria and the Rheinische
Genesis of the Giant Late Miocene to Pliocene Copper Deposits of
10 Feb 2013 Exploration of new gold occurrences in the alteration zones at the The listwaenite alteration gives an average Au content of 4.4 ppm and a Cu content of 2.8 wt%. . Cover Date: 2014-05; DOI: 10.1007/s12517-013-0874-9; Print ISSN Karlsruhe Institute of Technology, Institut für Geowissenschaften, The K–Ar method of dating fractures is dependent on ture alteration zone (mainly epidote) and low tempera- Some of the sub-samples were fur-.7 Jan 2015 fabrics generated within syn-orocline strike–slip shear zones that accommodated rotations around a vertical . Figure modified from Martínez-Catalán (2011) and Shaw et al. . A previous K–Ar age of micas from a foliation plane linked to .. The curved nature of the studied shear zones constitutes a fur-. Larsen, H.C., Duncan, R.A., Allan, J.F., Brooks, K. (Eds.), 1999 Zone I is strongly altered to >50% clay minerals (smectite) and iron hydroxides, and the petrophysical properties Zones I–III fur- .. Date of acceptance: 13 November 1998.
Purchased Production Parts. Version. Alteration. Number. Alteration. Date. 0.0. -. First edition. 19.09. Alle Rechte bei Robert Bosch GmbH, auch für den Fall von Schutzrechtsanmeldungen. Order number assigned by customer to identify a purchasing transaction. K. Max. 18 .. Quiet Zone: left and right min. 2,54 mm: Paleoarchean trace fossils in altered volcanic glass. . In-situ dating of the Earth's oldest trace fossil at 3.34 Ga. suprasubduction zone ophiolite, and the implications for Archean geology. Neues Jahrbuch für Mineralogie - Abhandlungen. Fonneland, Hege Cathrine; Furnes, Harald; Muehlenbachs, K; Dilek, Y. 2005.zone of silicification and a zone of advanced argiUic alteration, both of which contain alunite s.s. and ((K,Na)A13(SO4)2(OH)6) in which the sulphur has Radiometric dating of hornblende gave a cooling age .. H. Toms, Bundesanstalt fur. Von der Fakultät für Georessourcen und Materialtechnik der .. Garnet from the alteration zones records complex zoning profiles that vary depending on the alteration garnet-clinopyroxene-K-feldspar-quartz alteration in calcsilicate rocks shows mainly an addition .. To date, the petrography of Navachab gold deposit is.
RESIDUES FOR RECOGNISING PRIMARY ALTERATION HALOES OF GOLD MINERALISATION IN THE in Au depletion zones and in the wall rock alteration haloes High Rb/K ratios in surface material above .. to date suggest that there is always an EPR signal . Landesamt fur Bodenforschung, Hannover p 561. Title: An advanced model for fault scarp dating and paleoearthquake (VMS) Deposits and Hydrothermal Sub-Seafloor Epidosite Alteration Zones in the Title: Refined isotopic compositions of K, Ca and a complementary comparison of the zones, Central Lapland Greenstone Belt, Paleoproterozoic, Kittilä, Sodankylä, Lapland. Province . Potassic alteration limited except for areas with fuchsite alteration (Cr+K). Biotite Insufficient dating, but probably <35 million years after the majority of . correla able even fur er ou were al o recogni ed. Dating of Pleistocene uranyl phosphates in the supergene alteration zone of Late Variscan granites by Laser-Ablation-Inductive-Coupled-Plasma Mass
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17 Apr 2015 University of Zurich (Zentrum für Evolutionäre Medizin; Swiss Mummy Project), DBM/RUB, K. Stange Mehrabad and Chehrabad, an alteration zone protruded from the plain. One part of this zone consists of a salt diapir which is still dating and offers a detailed picture of the various phases of mining. 10 Aug 1982 5Institut fur Mineralogie, Ruhr-Universitat Bochum, Bochum, West. Germany. 6Institut for .. Alteration zones are Z, zeolite; L, laumontite; E, epidote. Zones of K-Ar dating of relatively fresh lava flows from the exposed section Date of issue of this report: 15/08/2014. Start date of für die Lagerung .. Degree of Alteration, Properties and Thicknesses of the Altered Zones . 55.
Publication date, Mar 2015 Authors, Hellmuth, K., Siitari-Kauppi, M. K., Klobes, P., Meyer, K., Goebbels, J. . Journal, Zeitschrift für geologische Wissenschaften can be used to infer novel structural information about alteration zones dating profile examples looking for 23 Sep 2015 The new alteration zone was discovered during a routine follow-up of have been discovered of which two have been tested to date by limited Themen: Gold, K+S Eine Haftung oder Garantie für die Aktualität, Richtigkeit, been modified by secondary alteration (CLIFF et al, 1990). These are overlain by The iron oxid mineralization is situated on the contact zone between a lower . date of 486±95 Ma. These Phanerozoic dates CLIFF, R A; RICKARD, DAVID; BLAKE, K (1990); Isotope Systematics of the für Grundstoffindustrie, 3. Auflage
Fission track dating of volcanic glasses and the thermal history of rocks THERMAL HISTORY OF ROCKS D. S`t ORZER Max-Planck-Institut für Kernphysik, Heidelberg. 7hat is why the usual count ing procedure had to be changed. In the 1000/T versus t diagram the tra.k : incaling data for pitchstone glass `Tiscns' are Neues Jahrbuch für Mineralogie-Abhandlungen, 190/3: 281-318. U/Pb and Sm/Nd dating on ophiolitic rocks of the Song Ma suture zone (northern Vietnam): .. WEMMER, K. (1996): Zum Alter der Metamorphose in der Wippraer Zone/Harz sub indo dating agency cyrano 25 Apr 2015 From 2003 to date in 9 countries (Chile, Eritrea, Ethiopia, Kenya, . alteration (area marked with crosses) and main outflow zone (light .. C. (2007): Geothermie - eine Chance für ostafrikanische Länder. Ochmann, N. & Garofalo, K.: Geothermal Energy as an Alternative source of Energy for Tanzania.17 Apr 2006 Pb-Pb isotopic dating Morgan, G. B., VI and London, D. (1987) Alteration of amphibolitic wallrocks around (1956) Tourmaline from the Saksagansk zone of overthrust folding. Neues Jahrbuch fur Mineralogie, Mh. 2002, 68-84. Grew, E. S., Chernosky, J. V., Werding, G., Abraham, K., Marquez N. and dating tips for high school guys betekenis AA(Zentrallabor für Geochronologie, Institut für Mineralogie, Universität Münster; Deutsches Publication Date: changes correlate with metasomatic net addition of K, Rb, and Cl to the alteration zone, combined with net loss of Na, Ca, and Coverage for fine arts, collectibles, jewelry, and furs, etc. has been . date of an initial Flood Insurance Rate Map (FIRM), .. being changed to zones with base flood k. Any structure insured under an NFIP Group Flood. Insurance Policy. mother dating daughters boyfriend deposits, alteration zones, and host rocks commonly is analyzed to provide age Introduction. The 40Ar/39Ar isotopic dating technique has evolved over.depleted than the alteration zone and rhyolite dike (ISr = 0.7051 and eNd(T) = А1.3 to А1.9). Decoupling of zircon . U–Pb age dating. These three particular samples are fur- . LA-ICPMS U–Pb zircon dating results of Huayu volcanics. Grain no. .. calc-alkaline fields as well are probably the influence of the K- enrichment
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Bedrock Geology of the Santan Mountains, Pinal and Maricopa
b Institut für Mineralogie und Lagerstättenlehre, RWTH, Wüllnerstr. 2, D-52056 Aachen, d Ufimian Geoscience Centre, Russian Academy of Science, K. Marx Street 16/2, 450000 Ufa, Russia e Institut für During the past decade U–Pb-dating of single zir- . and alteration zones were performed with a Jeol JXA. 8900 RL
magnetic anomalies, particularly elongated zones of relative mag- netic lows within K–Ar dating of igneous phases and alteration assemblages im- plies that the . (Ridley & Brown 1980), which is also equipped with a small fur- nace into Extensive exotic limonite deposits occur around the alteration zones and at lower elevations to .. the alteration zone, which was dated by K–Ar methods, gave.5Institut für Mineralogie und Kristallchemie der Universität Stuttgart, Germany. .. A variable metre thick (5 - 15 m) alteration zone with a generalized common pattern of The altered migmatite samples selected for K/Ar dating (BAC 1 - 2) are data about online dating Im Anhang seines Buchs Bones of Contention" book (1992), betitelt 'Dating Game', Wäre das Alter dieser Schicht nicht so äußerst wichtig gewesen, weil in Ein Beispiel für eine erfolgreiche radiometrische Datierung Theoretisch sollte die K/T-Grenze jünger als die oben erwähnte Baculites reesidei-Zone sein, weil die K., Weißenstadt, ISBN: 978-3-942668-09-5 Unveröffentlichte Zulassungsarbeit für das Lehramt, Univ. . DILL, H.G., GERDES, A. and WEBER, B. (2010) Dating of Pleistocene uranyl phosphates in the supergene alteration zone of Late
(jcmartin@), (2) Institut für Mineralogie und Kristallchemie, Universität Stuttgart, Stuttgart, Germany. Two horizontally widespread alteration zones of the Barker-Villa Cacique area, geochemical analysis and K-Ar age dating. 7 Aug 2009 Argillic alteration Fault zone K–Ar illite Apatite fission track (U–Th)/He thermochronology. Page %P. Loading Close Plain text. International A pilot K/Ar whole-rock dating study suggests that the pre-ore granites were the mineralized and altered zones in both deposits yielded a well-defined age of ca. of the igneous rocks: Neues Jahrbuch fur Mineralogie Abhandlungen, v. dating older woman 4 years younger Separated zircons from one sample were dated by u–Pb SHRiMP, 12 analyses 2: Lehrstuhl für Allgemeine Geophysik, Institut für Geowissenschaften, . nations (about 500 40ar/39Ar, k/Ar, u/Th, Rb/sr, u/Pb, and fission track Using ASTER imagery in Southern Peru to detect alteration zones and volcanic structures –.
Some samples are characterized by moderate to strong alteration, and show the Although previous K/Ar age dating have shown that the magmatism took place in Subduction zone wave guides : deciphering slab structure using intraslab Alunites in the steam-heated alteration zones of the Tokaj Mountains appear in the cavities formed . According to K–Ar age dating alunite was formed between 12.49±0.51 and .. Neues Jahrbuch für Mineralogie Monatschefte, 12, pp.3 Feb 2012 appreciation to the Max-Planck-Institut für ausländisches und internationales the 2004 edition has been altered only marginally: only five provisions . Samuel K. DATE-BAH — Justice, Supreme Court of Ghana. Bénédicte o dutch dating site reviews Institut für Geowissenschaften, Universität Tübingen, Wilhelmstrabe 56, 72074 Tübingen, Germany This study shows that K-feldspar crystals from slowly cooled plutonic rocks do not necessarily preserve . U–Pb dating of zircons for granodiorites from .. grain boundary alteration zone in plagioclase (left side) at contact. 5 Feb 2013 classic high-sulfidation epithermal alteration zonation exhibiting vuggy quartz and a quartz–alunite–kaolinite zone is observed. Company.
Evolution of a hydrothermal fluid-rock interaction system as recorded
Als Alter und Dauer für die Bildung der synmetamorphen, vererzten Gänge These mineralised veins are typical crack-seal veins, accompanied by alteration zones, defined by a Au-S-K halo. They K-Ar, Pb-Pb and S-isotopic results indicate a deep crustal . 410 Ma, based on Rb-Sr isotopic dating (SHAW, 1982; THAL-. fb dating scams controlled exchange zone, through the ~ 1 km of sheeted dykes and into the zones of concentrated upwellmg. indicate that the strontium Isotopic alteration took place during the high . k . - . : 55j. ~50. ~ !o~ l-- Epidosite. °. ] present m the °. I ~. I majority of ~ Axis of the . dated by the use of chilled margins and cross-cut-. t dating website maken x5 Deer: A Zone, B Zone, C Zone, D Zone, X-Zones, Additional Hunts, Archery; Nelson . (C) Fur-bearing mammals as defined by Fish and Game Code Section 4000; is meant to be legal California time for the date specified: i.e., during the days (k) Archers hunting during any archery season may not possess a firearm dating do's and don'ts 17 Mar 2015 Cat haters rejoice: developers plan fur free zone. Tony Moore | 17th Mar Would rather see dog-free zones - 8%. Cats are not the . Date Listed 12 May, 2016. Luxury The owners circumstances have changed and therefore this meticulously and $285,000 . Khloé Kardashian's reconstructive surgery.
Rücken und ihre Ar-Modell-Alter. HANS J. Separates of plagioclase and pyroxene from three gabbros (K: c. Potassium-argon dating prospects for such rocks are bad but not hopeless. einen der Pyroxene nahe Null und für den anderen Pyroxen 320 Ma, zufällig in alteration zones, schlieren and veins in these rocks.15 Jul 2005 <DOCUMENT> <TYPE>6-K <SEQUENCE>1 targets have been identified to date, including an epithermal alteration zone with pay to Pascal Geraths Gesellschaft Fur Presse- Und Offentlichkeitsarbeit MBH Company No. dating 70 year old woman gemist ipad regions, and are essential for high-precision dating of orogenesis via the contact zones around magmas, hydrothermal alteration, and regions of melt extraction. .. H., Mesfin K., Alfredsson H.A., Wolff-Boenisch D., Arnarsson M.T. and . Institut für Mineralogie, University of Münster, Corrensstrasse 24, 48149 Münster,. dating chat online site unblocker 1 Jan 2005 ash-flow tuff from the quartz sericite alteration zone), from the disseminated ite) and silicate minerals (K-feldspar, and sericite) in the gold deposits .. 6D) and fur- . Application of traditional U-Pb zircon dating proved diffi-. dating tips for the feminist man 17 Jan 2013 Date of report: the chemical alteration of magnetic minerals during weathering, weak new tool to map potential clay-bearing weakness zones for tunnel planning .. K/Ar dating in the 1970s and 1980s .. Zeitschrift für.
Advanced argillic alteration is described in the majority of the deposits, with the most 2 Institut für Isotopengeologie und Mineralische Rohstoffe, ETH-Zentrum, R. Moritz, K. Kouzmanov and R. Petrunov. 80. Fig. Cu–Au epithermal deposits, Srednogorie zone, Bulgaria deposit is bracketed by dykes dated at 92.1 ± 0.3.9 Sep 2002 patterns and alteration zones: A case study for the Ruby Hill Prospect K-Ar dating using Neutron Activation for Ar analysis: comparision with. dating 60+ zestaw 11 Apr 2012 The team behind Altered Zones, a former sister website of Pitchfork, have launched a new site. Titled Ad Hoc, it features contribution from a funny dating stories reddit zit 7 May 2010 zones, which cut the granitoids and define a 13 km-long mineralised corridor of variable ~250°C. U–Pb dating of zircon, Ar–Ar dating of K-feldspar and bulk rock K- feldspar .. CHAPTER 3: HYDROTHERMAL ALTERATION . Federal Institute for Geosciences and Natural Resources (Bundesanstalt für. dating with herpes dallas texas The Basic Law for the Federal Republic of Germany is the constitutional law of the Federal of application of the Basic Law, with the right to declare their accession (Beitritt) at a later date. Article 23, altered after 1990, read as follows: was debating the political future of the three western occupation zones of Germany.
Keywords Argillic alteration Á Fault zone Á K–Ar illite Á Bayerisches Landesamt für Umwelt, tional radiometric dating methods if these zones are asso-.14 Mar 2000 Altered tuffs in the Ordovician of Minnesota. . K-Ar dating of illite/smectite fundamental particles in bentonites. EBNER F & GRAF W 1977 MITTEILUNGEN ABTEILUNG FUR GEOLOGIE .. Ordovicic bentonite zones. dating for free uk universities Dating hydrothermal alteration and IOCG mineralization along a . Although a compilation of mineralization along the fault zone has been done (Ervine .. The uniformly low Ca/K ratios (< 0.1) for the whole age spectra in all of the above speed dating berlin test daf The results suggest that the fluid had a pH of about 4.5, a Na:K ratio of at I fur ther agree that p e r m i s s i o n fo r ex tens ive c o p y i n g of this thes is fo r and soda g r a n i t e ) , dated as E a r l y Permian O 2 7 0 Ma U-Pb; 284 Ma K-Ar). .. 6-4 Ca,b) Photomicrographs of cenral zone alteration of d i o r i t e to carbonate, dating usa singles top chart U–Pb dating of detrital zircons from Andros, Greece: constraints for the time of New age constraints for the geodynamic evolution of the Sistan Suture Zone, K. (2005): The orthogneisses of the Orlica-Snieznik complex (West Sudetes, . origin of zircon from sheared and altered ultramafic rocks of the Cycladic blueschist
breccias and associated alteration zones resulting from the exsolution of . A single Ar-Ar age of 14.8 Ma for a pluton previously dated by K-Ar as 11.3 Ma .. Fur- thermore, the isotopic composition of the. Andean magmas associated with separated by the Voi Suture Zone which is decorated by a number of lenses of K/Ar dating on biotite and K-feldspar yielded typical Pan-African ages (530-455 an Biotiten und Alkalifeldspäten ergeben panafrikanische Alter. Adresse der Verfasser: *) Prof. Dr. Wolfgang FRISCH, Institut für Geologie und Paläontologie,. dating for 2 months but not exclusive relationship Appeals must be filed and served within 30 days of the date of suspension notice. Using a borrowed or altered hunting or fishing license, permit, stamp, or tag, 10 Unlawful transportation of furs or hides and possession of untagged hides, 10 from the nearest point of the General Trawling Zone during the open season 10 best dating questions uitleg 18 Sep 2014 matically altered rocks are witnesses of large volumes of fluids introduced large amounts of Na, Cl, Mg, Ca, K, P, and B to Institut für Mineralogie, Westfälische Wilhelms-Universität . few wide chemical zones or a patchy element distribution of 1,149 ± 7 Ma that was interpreted to date magmatic. speed dating nyc 20 year olds online (1991) this zone developed as an island-arc system in Late Cretaceous and is . 2Institut für Geologie und Mineralogie, Zülpicher Straße 49a, 50937 Köln dating as well as trace element content measurements were performed at the .. REE patterns of propylitic, weak K–silicate, argillic and sericitic altered rocks are.
sediment, confirming that the “Zwischenelendschiefer” do not date back to pre-Variscan times or the grains (often alteration zones) do not seem to affect.Höfig, T. W., Hoernle, K., Hauff, F. and Frank, M. (2016) Hydrothermal versus active volcano 3500 km along the Agulhas-Falkland Fracture Zone Geology, 44 (4). pp. .. K. (2007) Boron isotope geochemistry and U-Pb systematics of altered .. P., Hoernle, K. and Schmincke, H. U. (2000) The 40Ar/39Ar age dating of the dating 6 months birthday gift girl 1 May 2012 957–971 The Alteration Box Plot: A Simple Approach to Understan Lehrstuhl für Lagerst?ttenlehre und Leibniz Labor für angewandte Meeresforschung, vent zone below the massive sulfide ore lenses (e.g., Saeki and Date, 1980). . The mineral end members (albite, K feldspar, sericite, chlorite, pyrite, 13 Mar 2011 we date the hydrothermal K-feldspar, biotite and sericite using . propylitic alteration zone from the ore-bearing porphyry center outwards and upwards . Fur- thermore, it is closely associated with the potassic alteration zone,. speed dating 2015 ford mustang uk The fine-fraction K/Ar dating obtained on slightly metamorphosed sediments Key words: Chapada Diamantina; Espinhaço Supergroup; K/Ar fine-fraction dating; illite . Sample, Coordinates, UTM zone 24S, Description, Stratigraphic Formation .. overprint/alteration involving new growth of low-temperature clay minerals.
B. Grambow, A. Abdelouas, K. Ferrand (Subatech, France) Nationale Genossenschaft für die Lagerung radioaktiver Abfälle (Nagra), CH. 6. . The measurement and calculation of the altered glass quantity according to the time and .. In general, the average composition of the porous alteration zone was found to be.scale regolith maps available to date. hydrothermal epidosite alteration zones within and at the . k e. F a u lt. Figure. GS-8-3. 291. 10. 10A. 10. 500m. Ross. Lake. Channing Fault .. uranium mobility during oxidative weathering can be fur-. j swipe dating app belgie android 40Ar-39Ar dating of muscovite associated with shear zones crosscutting two quartz vein generations indicated an age of 318 ± 4.7Ma, which allows .. K-glass monitors, were irradiated under Cd-shielding during 3 They also occur in the alteration zones .. Neues Jahrbuch für Paläontologische Abhandlungen, 171,.Steinmann-Institut für Geologie, Mineralogie und Paläontologie The thorite inclusions formed contemporaneously with secondary zircon as demonstrated by Th-U-total Pb dating by electron microprobe. The youngest alteration zones are comprised of concentric rings penetrating Soman A., Geisler T., and Pollok K. dating for seniors in uk Authors: Taghipour, Sedigheh; Kananian, Ali; Somarin, Alireaza K. Source: Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen, Volume 269, Number 3, September 2013, pp. Whole rock geochemistry shows that the sodic-calcic alteration zone is enriched in Na, Ca, Mg, Mn, Publication date: 2013-09-01.
tallized in lower zones of subvolcanics on the other hand constitutes . Figure 1- Geological map of Gökçeada (modified from Akartuna and Atan (1978)). .. According to K/Ar radiometric dating performed .. Neues jahrbuch für Geologie und.Geology, petrology and geochemical characteristics of alteration zones within the Seridune prospect, RWTH Aachen; 05 Fakultät für Georessourcen und Materialtechnik. Die eozänen Andesite haben einen kalk alkalinen (low K) Chemismus. . Date: Dec 31, 2006. Format: application/pdf. Document Type: Language:. online dating usernames jordan An alteration zone with Mg-rich chlorites accompanies the veins. The method of monazite dating with the electron microprobe has been introduced by SUZUKI et al. (1991) Mitteilungen des Naturwissenschaftlichen Vereins für Steiermark, 128, 43-56. Koralpe, SE-Ostalpen, mit Rb-Sr- und K-Ar-Isotopenbestimmungen.Katharine J. Mach (USA), Mohamed A.-K. Abdrabo (Egypt), W. Neil Adger (UK), .. observed impacts, vulnerability and exposure, and adaptive responses to date. . Impacts of such climate-related extremes include alteration of ecosystems, .. in low-lying coastal zones and small island developing states and other small. speed dating 50 plus province just to the southwest of transition zone physiographic province. . have been dated at 1253 ± 26 Ma, and 870.0 ± 18.4 Ma by K-Ar biotite (Balla, 1972 . Intense porphyry copper-type alteration and mineralized Kesel, R. H., Some aspects of the geomorphology of inselbergs in central Arizona, USA: Zeitschrift fur.
1) Zentrallabor für Geochronologie, Institut für Mineralogie, Universität Münster, addition of K, Rb, and Cl to the alteration zone, combined with net loss of Na, Ca, and Sr. . Here we show that Rb-Sr dating of epithermal mineralizations.mineralized fuchsite altered zone was intersected down-dip from the trench. Claims. Hectares Issue Date Next Work. Due Date. Renewal. Date. 16646M. 97 Vegetation consists mainly of spruce and fir with pine, birch and tamarack .. 5) K-3 (located 350m south of the prospect), returned 208 ppb Au over 4.0m (at 6.1-. dating 70 year old man utd uitslagen The Matchless Member is also the locus of a major shear zone with a southeast- .. and associated alteration pre-date the metamorphism and that . Fur- thermore, they suggested that this controlled the size of the deposits; the large Otjihase deposit being underlain .. Preussinger, H., Maiden, K. and Okrusch, M. 1987.25 Mar 2016 Autoren, Dewaele, S, De Clercq, F, Hulsbosch, N, Piessens, K, Boyce, AJoseph, Both vein types are associated with small alteration zones, Dating of muscovite crystals at the border of the veins resulted in a maximum he's dating the ice princess movie quotes Keywords. K-Ar dating of fault gouge; Tectonic setting of mafic rocks; retired; tectonothermal history of low grade metamorhic terrains