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Shergotty Basalt, 5 Kg Seen to Fall Introduction the Shergotty Achondrite Fell on August 25, 1865 at 9:00 A.M
V. Shergotty basalt, 5 kg seen to fall Introduction The Shergotty achondrite fell on August 25, 1865 at 9:00 a.m. near a town called Shergahti in Bihar State, India after detonations were heard (Graham et al. 1985). Duke (1968) refers to several stones with fusion crusts, but this has not been confirmed. The main mass is at the Museum of the Geological Survey in Calcutta, India (figure V-1). In 1984, an international consortium was organized by J. C. Laul to study ~30 grams of Shergotty in detail (Laul 1986a, b). Shergottites (Shergotty, Zagami, EETA79001B, QUE94201, Los Angeles) are texturally and mineralogically similar to terrestrial diabases (although all of the plagioclase has been shocked to maskelynite), but quite distinct petrologically and chemically from the rest of the basaltic achondrites (Stolper et al. 1979). Stolper and McSween (1979) and others have noted that Shergotty crystallized under relatively oxidizing conditions. Figure V-1. Photograph of Shergotty meteorite The Shergotty meteorite has been severely shocked and showing fusion crust and borken surfaces. Two saw is considered the “type locality” for maskelynite (dense cuts are visible. Sample is about 25 cm across. Photo plagioclase glass). In fact, it has proven to be very kindly provided by Prof. N. Bhandari, Director, Physical Research Laboratory, Ahmedabad, India. difficult to date the original crystallization event of Figure V-2. Photograph of slab of Shergotty meteorite showing basaltic texture and alignment of pyroxene crystals. Note the inclusion of black glass in the center of this slab. This is figure 1 in Duke (1968). Photo courtesy of U. -
Exceptionally Well-Preserved Fossils in a Middle Ordovician Impact Crater
Downloaded from http://jgs.lyellcollection.org/ by guest on September 29, 2021 Review focus Journal of the Geological Society Published Online First https://doi.org/10.1144/jgs2018-101 The Winneshiek biota: exceptionally well-preserved fossils in a Middle Ordovician impact crater Derek E.G. Briggs1,2*, Huaibao P. Liu3, Robert M. McKay3 & Brian J. Witzke4 1 Department of Geology and Geophysics, Yale University, New Haven, CT 06520, USA 2 Yale Peabody Museum of Natural History, Yale University, New Haven, CT 06520, USA 3 Iowa Geological Survey, IIHR – Hydroscience & Engineering, University of Iowa, 340 Trowbridge Hall, Iowa City, IA 52242, USA 4 Department of Earth and Environmental Sciences, University of Iowa, 115 Trowbridge Hall, Iowa City, IA 52242, USA D.E.G.B., 0000-0003-0649-6417 * Correspondence: [email protected] Abstract: The Winneshiek Shale (Middle Ordovician, Darriwilian) was deposited in a meteorite crater, the Decorah impact structure, in NE Iowa. This crater is 5.6 km in diameter and penetrates Cambrian and Ordovician cratonic strata. It was probably situated close to land in an embayment connected to the epicontinental sea; typical shelly marine taxa are absent. The Konservat-Lagerstätte within the Winneshiek Shale is important because it represents an interval when exceptional preservation is rare. The biota includes the earliest eurypterid, a giant form, as well as a new basal chelicerate and the earliest ceratiocarid phyllocarid. Conodonts, some of giant size, occur as bedding plane assemblages. Bromalites and rarer elements, including a linguloid brachiopod and a probable jawless fish, are also present. Similar fossils occur in the coeval Ames impact structure in Oklahoma, demonstrating that meteorite craters represent a novel and under-recognized setting for Konservat- Lagerstätten. -
La Ronge Lynn Lake Bridge Project: Geology of the Southern Reindeer Lake Area
Saskatchewan Open File Report 2003-1 Industry and Resources Saskatchewan Geological Survey _ La Ronge Lynn Lake Bridge Project: Geology of the Southern Reindeer Lake Area Executive Summary (part of CD1) R.O. Maxeiner, C.T. Harper, D. Corrigan, and D.G. MacDougall 2004 Saskatchewan Open File Report 2003-1 Industry and Resources Saskatchewan Geological Survey La Ronge–Lynn Lake Bridge Project: Geology of the Southern Reindeer Lake Area Executive Summary (part of CD1) R.O. Maxeiner, C.T. Harper, D. Corrigan, and D.G. MacDougall 2004 19 48 Printed under the authority of the Minister of Industry and Resources Although the Department of Industry and Resources has exercised all reasonable care in the compilation, interpretation, and production of this report, it is not possible to ensure total accuracy, and all persons who rely on the information contained herein do so at their own risk. The Department of Industry and Resources and the Government of Saskatchewan do not accept liability for any errors, omissions or inaccuracies that may be included in, or derived from, this report. Cover: Garnet-anthophyllite alteration assemblage from the Numabin Bay area (Reindeer Lake). This report is available for viewing and additional copies are available for purchase at: Publications Office Saskatchewan Industry and Resources 2101 Scarth Street, 3rd floor Regina, SK SA4P 3V7 (306) 787-2528 or FAX (306) 787-2488 E-mail: [email protected] and the Resident Geologists’ offices in La Ronge and Creighton Parts of this publication may be quoted if credit is given. It is recommended that reference to this report be made as follows: Maxeiner, R.O., Harper, C.T., Corrigan, D., and MacDougall, D.G. -
Magnetic Properties and Redox State of Impact Glasses: a Review and New Case Studies from Siberia
geosciences Review Magnetic Properties and Redox State of Impact Glasses: A Review and New Case Studies from Siberia Pierre Rochette 1,* , Natalia S. Bezaeva 2,3, Andrei Kosterov 4 ,Jérôme Gattacceca 1, Victor L. Masaitis 5, Dmitry D. Badyukov 6, Gabriele Giuli 7 , Giovani Orazio Lepore 8 and Pierre Beck 9 1 Aix Marseille Université, CNRS, IRD, Coll. France, INRA, CEREGE, 13545 Aix-en-Provence, France; [email protected] 2 Institute of Geology and Petroleum Technologies, Kazan Federal University, 4/5 Kremlyovskaya Str., 420008 Kazan, Russia; [email protected] 3 Institute of Physics and Technology, Ural Federal University, 19 Mira Str., 620002 Ekaterinburg, Russia 4 St. Petersburg State University, 199034 St. Petersburg, Russia; [email protected] 5 A.P. Karpinsky Russian Geological Research Institute (VSEGEI), Sredny prospect 74, 199106 St. Petersburg, Russia; [email protected] 6 V.I. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, 19 Kosygin str., 119991 Moscow, Russia; [email protected] 7 School of Science and Technology-Geology division, University of Camerino, Via Gentile III da Varano, 62032 Camerino (MC), Italy; [email protected] 8 CNR-IOM-OGG c/o ESRF, 71 Avenue des Martyrs CS 40220, F-38043 Grenoble, France; [email protected] 9 Université Grenoble Alpes, CNRS, IPAG, UMR5274, 38041 Grenoble, France; [email protected] * Correspondence: [email protected]; Tel.: +33-442971562 Received: 26 February 2019; Accepted: 11 May 2019; Published: 15 May 2019 Abstract: High velocity impacts produce melts that solidify as ejected or in-situ glasses. We provide a review of their peculiar magnetic properties, as well as a new detailed study of four glasses from Siberia: El’gygytgyn, Popigai, urengoites, and South-Ural glass (on a total of 24 different craters or strewn-fields). -
AND GEOLOGY of the SURROUNDING AREA I
. " ... , - .: ~... GP3/10 ~ " . :6',;, J .~~- -i-~ .. '~ MANITOBA MINES BRANCH DEPARTMENT OF MfNES AND NATURAL RESOURCES LAKE ST. MARTIN CRYPTO~EXPLOSION CRATER .. AND GEOLOGY OF THE SURROUNDING AREA i . , - by H. R. McCabe and B. B. Bannatyne Geological Paper 3/70 Winnipeg 1970 Electronic Capture, 2011 The PDF file from which this document was printed was generated by scanning an original copy of the publication. Because the capture method used was 'Searchable Image (Exact)', it was not possible to proofread the resulting file to remove errors resulting from the capture process. Users should therefore verify critical information in an original copy of the publication. (i) GP3/10 MANITOBA M]NES BRANCH DEPARTMENT OF MINES AND NATURAL RESOURCES LAKE ST. MARTIN CRYPTO·EXPLOSION CRATER AND GEOLOGY OF THE SURROUNDING AREA by H. R. McCabe and B. B. Bannatync • Geological Paper 3/70 Winnipeg 1970 (ii) TABLE OF CONTENTS Page Introduction' r Previous work I .. Present work 2 Purpose 4 Acknowledgcmcnts 4 Part A - Regional geology and structural setting 4 Post-Silurian paleogeography 10 Post-crater structure 11 Uthology 11 Precambrian rocks 12 Winnipeg Fomlation 13 Red River Fomlation 14 Stony Mountain Formation 15 Gunn Member 15 Gunton Member 16 Stoncwall Formation 16 Interlake Group 16 Summary 17 Part B - Lake St. Martin crypto-explosion crater 33 St. Martin series 33 Shock metamorphism 33 Quartz 33 Feldspar 35 Biotite 35 Amphibole 36 Pseudotachylyte 36 Altered gneiss 37 Carbonate breccias 41 Polymict breccias 43 Aphanitic igneous rocks - trachyandcsitc 47 Post·crater Red Beds and Evaporites (Amaranth Formation?) 50 Red Bed Member 50 Evaporite Member 52 Age of Red Bed·Evaporite sequence 53 Selected References 67 . -
Stishovite and Seifertite in Lunar Meteorite Northwest Africa 4734
71st Annual Meteoritical Society Meeting (2008) 5058.pdf FIRST EVIDENCE OF HIGH PRESSURE SILICA: STISHOVITE AND SEIFERTITE IN LUNAR METEORITE NORTHWEST AFRICA 4734. H. Chennaoui Aoudjehane1-2, A. Jambon2 1Université Hassan II Aïn Chock, Laboratoire Géosciences, BP 5366 Maârif Casa- blanca Morocco (e-mail: [email protected]), 2Université Pierre et Marie Curie-Paris6 and IPGP Laboratoire MAGIE, Case 110, 4 place Jussieu, 75252 Paris France. Introduction: Silica is a rare phase in lunar rocks; it has been described as either quartz, cristobalite and/or tridymite [1]. Northwest Africa 4734, is an uncommon type of lunar rock, which may be launched paired with the LaPaz Icefield Lunar Mare basalts found in 2002-03 in Antarctica [2-6], it is a coarse grained rock of basaltic composition, exhibits a number of sig- nificant shock features, such as PDFs, extensive fracturation of pyroxene, impact melt pockets and transformation of plagioclase to maskelynite; silica is present as a minor phase. Analytical procedures: We studied the speciation of silica polymorphs to characterize the shock, using SEM imaging, Ra- man spectroscopy, CL imaging and spectroscopy. Further details can be found in [7]. Results: According to the CL spectra [7-9], cristobalite, tridymite, high-pressure silica glass, stishovite and seifertite, are all present. Special emphasis is made on stishovite and seifertite, which, like in shergottites, exhibit specific textural features [7]. Cathodoluminescence spectra characteristic of high-pressure sil- ica phases: glass, stishovite and seifertite have been recorded in addition to the original low-pressure phases. The remanence of cristobalite and tridymite underscores a significant heterogeneity of the shock supported by the rock. -
Physical Properties of Martian Meteorites: Porosity and Density Measurements
Meteoritics & Planetary Science 42, Nr 12, 2043–2054 (2007) Abstract available online at http://meteoritics.org Physical properties of Martian meteorites: Porosity and density measurements Ian M. COULSON1, 2*, Martin BEECH3, and Wenshuang NIE3 1Solid Earth Studies Laboratory (SESL), Department of Geology, University of Regina, Regina, Saskatchewan S4S 0A2, Canada 2Institut für Geowissenschaften, Universität Tübingen, 72074 Tübingen, Germany 3Campion College, University of Regina, Regina, Saskatchewan S4S 0A2, Canada *Corresponding author. E-mail: [email protected] (Received 11 September 2006; revision accepted 06 June 2007) Abstract–Martian meteorites are fragments of the Martian crust. These samples represent igneous rocks, much like basalt. As such, many laboratory techniques designed for the study of Earth materials have been applied to these meteorites. Despite numerous studies of Martian meteorites, little data exists on their basic structural characteristics, such as porosity or density, information that is important in interpreting their origin, shock modification, and cosmic ray exposure history. Analysis of these meteorites provides both insight into the various lithologies present as well as the impact history of the planet’s surface. We present new data relating to the physical characteristics of twelve Martian meteorites. Porosity was determined via a combination of scanning electron microscope (SEM) imagery/image analysis and helium pycnometry, coupled with a modified Archimedean method for bulk density measurements. Our results show a range in porosity and density values and that porosity tends to increase toward the edge of the sample. Preliminary interpretation of the data demonstrates good agreement between porosity measured at 100× and 300× magnification for the shergottite group, while others exhibit more variability. -
Moon Minerals a Visual Guide
Moon Minerals a visual guide A.G. Tindle and M. Anand Preliminaries Section 1 Preface Virtual microscope work at the Open University began in 1993 meteorites, Martian meteorites and most recently over 500 virtual and has culminated in the on-line collection of over 1000 microscopes of Apollo samples. samples available via the virtual microscope website (here). Early days were spent using LEGO robots to automate a rotating microscope stage thanks to the efforts of our colleague Peter Whalley (now deceased). This automation speeded up image capture and allowed us to take the thousands of photographs needed to make sizeable (Earth-based) virtual microscope collections. Virtual microscope methods are ideal for bringing rare and often unique samples to a wide audience so we were not surprised when 10 years ago we were approached by the UK Science and Technology Facilities Council who asked us to prepare a virtual collection of the 12 Moon rocks they loaned out to schools and universities. This would turn out to be one of many collections built using extra-terrestrial material. The major part of our extra-terrestrial work is web-based and we The authors - Mahesh Anand (left) and Andy Tindle (middle) with colleague have build collections of Europlanet meteorites, UK and Irish Peter Whalley (right). Thank you Peter for your pioneering contribution to the Virtual Microscope project. We could not have produced this book without your earlier efforts. 2 Moon Minerals is our latest output. We see it as a companion volume to Moon Rocks. Members of staff -
Impact Glasses from Zhamanshin Crater (USSR)
80 Earth awl Plauelaty Science Leuers, 78 (1986) 80-88 Elsevier Science Publishers B.V., Amsterdam - Printed in The Netherlands IS1 Impact glassesfrom Zhamanshin crater (U.S.S.R.) : chemical composition and discussion of origin Christian Koeberl ’ and Kurt Fredriksson 2 ’ Insritrrre of Geochemisny, Uniuersiry oj Vienna, P.O. Box 73. A-1094 Viema (Arcsrriu) ’ Deparanettr of Mineral Scierrces, Snlithsotriatl Jrlstirurion, Washingron. DC 20560 (U.S.A.) Received October 12, 1985; revised version received February 17, 1986 Three silica-rich zhamanshinites and one irghizite from the Zhamanshin impact crater (northern Aral area, U.S.S.R.) have been analyzed for up to 40 major, minor, and trace elements. All data point to a clear distinction between these impact glasses and other tektites or impact glasses. e.g. from the Australasian strewn field. Halogens are generally enriched in the irghizites and zhamanshinites when compared to normal splash for tektites. with zhamanshinites enriched more than irghizites. The same holds also for the alkali metals and a number of other volatile elements like Sb and As. Nickel and cobalt are enriched in the irghizite sample IO a considerable degree, suggesting meteoritic contamination. This view is also supported by gold and selenium data, but for quantifications.other siderophile elements need to be considered. Chromium is not a valid indicator of meteoritic contamination. because small amounts of ultra-basic igneous material may completely alter the picture. The rare earth elements do show a sedimentary pattern, consistent with two or three different source materials and a variation which is probably mostly due to dilution with silica-rich materials. -
Multiple Fluvial Reworking of Impact Ejecta—A Case Study from the Ries Crater, Southern Germany
Multiple fluvial reworking of impact ejecta--A case study from the Ries crater, southern Germany Item Type Article; text Authors Buchner, E.; Schmieder, M. Citation Buchner, E., & Schmieder, M. (2009). Multiple fluvial reworking of impact ejecta—A case study from the Ries crater, southern Germany. Meteoritics & Planetary Science, 44(7), 1051-1060. DOI 10.1111/j.1945-5100.2009.tb00787.x Publisher The Meteoritical Society Journal Meteoritics & Planetary Science Rights Copyright © The Meteoritical Society Download date 06/10/2021 20:56:07 Item License http://rightsstatements.org/vocab/InC/1.0/ Version Final published version Link to Item http://hdl.handle.net/10150/656594 Meteoritics & Planetary Science 44, Nr 7, 1051–1060 (2009) Abstract available online at http://meteoritics.org Multiple fluvial reworking of impact ejecta—A case study from the Ries crater, southern Germany Elmar BUCHNER* and Martin SCHMIEDER Institut für Planetologie, Universität Stuttgart, 70174 Stuttgart, Germany *Corresponding author. E-mail: [email protected] (Received 21 July 2008; revision accepted 12 May 2009) Abstract–Impact ejecta eroded and transported by gravity flows, tsunamis, or glaciers have been reported from a number of impact structures on Earth. Impact ejecta reworked by fluvial processes, however, are sparsely mentioned in the literature. This suggests that shocked mineral grains and impact glasses are unstable when eroded and transported in a fluvial system. As a case study, we here present a report of impact ejecta affected by multiple fluvial reworking including rounded quartz grains with planar deformation features and diaplectic quartz and feldspar glass in pebbles of fluvial sandstones from the “Monheimer Höhensande” ~10 km east of the Ries crater in southern Germany. -
Carlyle Smith Beals Fonds (R15735) Finding Aid No MSS2580 MIKAN
Date: 15/06/2017 Carlyle Smith Beals fonds (R15735) Page 1 Finding aid no MSS2580 Y:\App\Impromptu\Mikan\Reports\Description_reports\finding_aids_&_subcontainers_simplelist.imr MIKAN Container File/Item Cr. file/item Hierarchy Title, etc Date of/de Extent/Media/Dim/Access cde # Contenant Dos./pièce Dos./item cr. Hiérarchie Titre, etc création Support ou Média / Dim. / Accès 4938572 Series Personnal papers [textual record, graphic material] 1922-1978 4941473 1 1 File Personal papers 1947-1972 Textual records / 90 S&C : Biographical information, genealogical information on the Beals family. Contains also a passeport and a manual with french expressions and vocabulary. 4941474 1 2 File Personal correspondence 1965-1978 Textual records / 90 S&C : Correspondence not related to the professional activities of C.S. Beals. Contains also several postal cards. 4941475 1 3 File Scholarship records, Degrees, Honors and letters of 1922-1977 Textual records / 90 recommendation S&C : Contains a scholarship record of Yale University for 1922, letters from the University of London that certify the reception of two Ph.D. by C.S. Beals in 1926 and 1934. Contains the certification of the registrar's Office of the University of Toronto for the M.A. of 1923. Contains also letters of recommendation from the different schools attented by C.S. Beals. Contains also a letter from the Royal Society of Canada informing C..S. Beals.that he'll be recommended as fellow of the RSC, a letter from The Profesionnal Institute of the Public Service of Canada for the reception of the Institute's Gold Medal (1977), correspondence and documentation concerning the reception of a Honorary Degree from Queen's University in Kingston in 1960 and a certificate of the Royal Society of Canada certifying 45 years of membership. -
Studie Van De Chronologie Van Genesis En Exodus
Chronologie van Genesis en Exodus 5285 v.Chr. Schepping 5285-4335 Adam 5055-4143 Set (Seth) 4850-3945 Enos 4660-3750 Kenan (Kainan) 4490-3595 Mahalalel (Mahalaleël) 4325-3363 Jered 4163-3798 Henoch 3998-3029 Metuselach (Methusalem) 3811-3058 Lamech 3623-2673 Noach 3123 Geboorte van Jafet 3121-2521 Sem 3028-3024 Bouw van de ark 3023 v.Chr. Zondvloed 3021-2456 Arpachsad 2886-2426 Kenan (Kainan) 2756-2296 Selach (Selah) 2673 Verhuizing naar de vlakte van Sinear 2626-2222 Eber (Heber) 2492 v.Chr. Spraakverwarring 2492-2153 Peleg 2465 Bewoning van het land Kanaän in een grot bij Tel Aviv 2362-2123 Reü (Rehu) 2230-2000 Serug 2201 Stad met 2.000 à 3.000 inwoners bij Jeruzalem 2100-1952 Nachor (Nahor) 2021-1876 Terach 1951 Geboorte van Abram 1941 Geboorte van Saraï 1876 v.Chr. Abram en Saraï naar Kanaän 1851 Geboorte van Isaak 1814 Overlijden van Sara 1811 Huwelijk van Isaak en Rebekka 1791 Geboorte van Esau en Jakob 1776 Overlijden van Abraham 1751 Huwelijk van Esau met Kanaänitische vrouwen 1714 Jakob naar Haran 1704 Geboorte van Levi 1700 Geboorte van Jozef 1694 Jakob terug in Kanaän 1683 Jozef naar Egypte verkocht 1671 Overlijden van Isaak 1670 Jozef onderkoning van Egypte 1669-1663 De zeven jaren van overvloed 1662-1656 De zeven jaren van hongersnood 1661 v.Chr. Jakob met zijn elf zonen naar Egypte 1644 Overlijden van Jakob 1590 Overlijden van Jozef 1567 Overlijden van Levi 1526 Geboorte van Mozes 1446 v.Chr. Uittocht uit Egypte 1406 Intocht in Kanaän Afkortingen LXX = Septuaginta LXX A = Septuaginta volgens de Codex Alexandrinus LXX B = Septuaginta volgens de Codex Vaticanus MT = Masoretische Tekst SamP = Samaritaanse Pentateuch Gebed Geest van God, leer mij te gaan over de golven, in vertrouwen U te volgen, te gaan waar U mij heen leidt.