Studie Van De Chronologie Van Genesis En Exodus
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Acadia Geology Alumni/Ae Newsletter
Acadia Geology Alumni/ae Newsletter Issue 21 December, 2009 Department of Earth and Environmental Science, Acadia University, Wolfville, Nova Scotia, B4P 2R6 [email protected] VIEW FROM ACADIA As I write this message, my term as the “acting head” course, it costs less to deliver. Another aspect of of Earth and Environmental Science is rapidly budgetary constraints is a lack of replacements for drawing to a close. Rob Raeside returns as head faculty on sabbatical. In the “good old days” such beginning Jan. 1, 2010, and it is probably a “toss-up” absences were typically covered by a full-time faculty as to which one of us is happier about that! To be replacement, but now we are lucky to receive one honest, however, I found many aspects of being “per-course replacement”. Such replacements have department head to be rewarding, and if we did not been great but they are paid specifically to teach the have a capable and willing incumbent returning to the single course assigned to them, and hence do not job, continuing in the role would have been OK. provide any coverage for other activities integral to running a department, such as counselling students, The past year at Acadia has more than lived up to the supervising honours and special project students, supposed ancient Chinese curse “may you live in serving on committees, and so on. This ripple-down interesting times”. The main topic occupying effect hits especially hard in a small department such everyone’s mind on campus has been the university as ours. Fortunately, faculty in E&ES have been budget. -
Australian Aborigines and Meteorites
Records of the Western Australian Museum 18: 93-101 (1996). Australian Aborigines and meteorites A.W.R. Bevan! and P. Bindon2 1Department of Earth and Planetary Sciences, 2 Department of Anthropology, Western Australian Museum, Francis Street, Perth, Western Australia 6000 Abstract - Numerous mythological references to meteoritic events by Aboriginal people in Australia contrast with the scant physical evidence of their interaction with meteoritic materials. Possible reasons for this are the unsuitability of some meteorites for tool making and the apparent inability of early Aborigines to work metallic materials. However, there is a strong possibility that Aborigines witnessed one or more of the several recent « 5000 yrs BP) meteorite impact events in Australia. Evidence for Aboriginal use of meteorites and the recognition of meteoritic events is critically evaluated. INTRODUCTION Australia, although for climatic and physiographic The ceremonial and practical significance of reasons they are rarely found in tropical Australia. Australian tektites (australites) in Aboriginal life is The history of the recovery of meteorites in extensively documented (Baker 1957 and Australia has been reviewed by Bevan (1992). references therein; Edwards 1966). However, Within the continent there are two significant areas despite abundant evidence throughout the world for the recovery of meteorites: the Nullarbor that many other ancient civilizations recognised, Region, and the area around the Menindee Lakes utilized and even revered meteorites (particularly of western New South Wales. These accumulations meteoritic iron) (e.g., see Buchwald 1975 and have resulted from prolonged aridity that has references therein), there is very little physical or allowed the preservation of meteorites for documentary evidence of Aboriginal acknowledge thousands of years after their fall, and the large ment or use of meteoritic 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. -
Compilation of Minimum and Maximum Isotope Ratios of Selected Elements in Naturally Occurring Terrestrial Materials and Reagents by T
U.S. Department of the Interior U.S. Geological Survey Compilation of Minimum and Maximum Isotope Ratios of Selected Elements in Naturally Occurring Terrestrial Materials and Reagents by T. B. Coplen', J. A. Hopple', J. K. Bohlke', H. S. Reiser', S. E. Rieder', H. R. o *< A R 1 fi Krouse , K. J. R. Rosman , T. Ding , R. D. Vocke, Jr., K. M. Revesz, A. Lamberty, P. Taylor, and P. De Bievre6 'U.S. Geological Survey, 431 National Center, Reston, Virginia 20192, USA 2The University of Calgary, Calgary, Alberta T2N 1N4, Canada 3Curtin University of Technology, Perth, Western Australia, 6001, Australia Institute of Mineral Deposits, Chinese Academy of Geological Sciences, Beijing, 100037, China National Institute of Standards and Technology, 100 Bureau Drive, Stop 8391, Gaithersburg, Maryland 20899 "institute for Reference Materials and Measurements, Commission of the European Communities Joint Research Centre, B-2440 Geel, Belgium Water-Resources Investigations Report 01-4222 Reston, Virginia 2002 U.S. Department of the Interior GALE A. NORTON, Secretary U.S. Geological Survey Charles G. Groat, Director The use of trade, brand, or product names in this report is for identification purposes only and does not imply endorsement by the U.S. Government. For additional information contact: Chief, Isotope Fractionation Project U.S. Geological Survey Mail Stop 431 - National Center Reston, Virginia 20192 Copies of this report can be purchased from: U.S. Geological Survey Branch of Information Services Box 25286 Denver, CO 80225-0286 CONTENTS Abstract...................................................... -
Abstract: Investigation of the Form and Age of the Bloody Creek Crater
Atlantic Geology . Volume 48 . 2012 40 Investigation of the form and age of the Bloody Creek Crater, southwestern Nova Scotia Mariella Nalepa1, Ian Spooner1, and Peter Williams2 1. Department of Earth and Environmental Science, Acadia Uni- versity, Wolfville, Nova Scotia B4P 2R6, Canada <[email protected]> ¶ 2. Department of Physics, Acadia Uni- versity, Wolfville, Nova Scotia B4P 2R6, Canada Virtually all terrestrial impact craters exhibit a circular geometry in plan-form; only three impact sites exhibiting non-circular, elongate forms have been identified on Earth. One of these exceptional sites is the Bloody Creek Crater located in southwestern Nova Scotia, an approximately 0.42 km long-axis elliptical crater first identified in 1987 during a regional air photo survey. It was confirmed as an impact crater in 2009 through integrated geomorphic, geophysical, and petrographic data. The structure’s rare ellipticity, pristine definition, preservation through shock metamorphic features of anomalously high pressures at the rim, low depth-to-diameter ratio, as well as age remain ambiguous and complicate the interpretation of the origin and evolution of the crater. The purpose of this study is to quantify the form of the feature in order to better understand the nature and age of impact. To achieve this objective, analytical software was used to assess the shape of the crater rim. An extensive review of the literature was also performed to understand the controls on crater formation as well as to synthesize a model for the geological evolution of the site which would aid in the interpretation of the age of the structure. Results demonstrate that the form of the crater rim is best approximated by an ellipse, as illustrated by comparison of the RMSE (Root-Mean-Square Error) calculated for various geometric models. -
ANIC IMPACTS: MS and IRONMENTAL P ONS Abstracts Edited by Rainer Gersonde and Alexander Deutsch
ANIC IMPACTS: MS AND IRONMENTAL P ONS APRIL 15 - APRIL 17, 1999 Alfred Wegener Institute for Polar and Marine Research Bremerhaven, Germany Abstracts Edited by Rainer Gersonde and Alexander Deutsch Ber. Polarforsch. 343 (1999) ISSN 01 76 - 5027 Preface .......3 Acknowledgements .......6 Program ....... 7 Abstracts P. Agrinier, A. Deutsch, U. Schäre and I. Martinez: On the kinetics of reaction of CO, with hot Ca0 during impact events: An experimental study. .11 L. Ainsaar and M. Semidor: Long-term effect of the Kärdl impact crater (Hiiumaa, Estonia) On the middle Ordovician carbonate sedimentation. ......13 N. Artemieva and V.Shuvalov: Shock zones on the ocean floor - Numerical simulations. ......16 H. Bahlburg and P. Claeys: Tsunami deposit or not: The problem of interpreting the siliciclastic K/T sections in northeastern Mexico. ......19 R. Coccioni, D. Basso, H. Brinkhuis, S. Galeotti, S. Gardin, S. Monechi, E. Morettini, M. Renard, S. Spezzaferri, and M. van der Hoeven: Environmental perturbation following a late Eocene impact event: Evidence from the Massignano Section, Italy. ......21 I von Dalwigk and J. Ormö Formation of resurge gullies at impacts at sea: the Lockne crater, Sweden. ......24 J. Ebbing, P. Janle, J, Koulouris and B. Milkereit: Palaeotopography of the Chicxulub impact crater and implications for oceanic craters. .25 V. Feldman and S.Kotelnikov: The methods of shock pressure estimation in impacted rocks. ......28 J.-A. Flores, F. J. Sierro and R. Gersonde: Calcareous plankton stratigraphies from the "Eltanin" asteroid impact area: Strategies for geological and paleoceanographic reconstruction. ......29 M.V.Gerasimov, Y. P. Dikov, 0 . I. Yakovlev and F.Wlotzka: Experimental investigation of the role of water in the impact vaporization chemistry. -
Logan Medallist 4. Large-Scale Impact and Earth History Richard A.F
Document generated on 09/28/2021 12:10 p.m. Geoscience Canada Journal of the Geological Association of Canada Journal de l’Association Géologique du Canada Logan Medallist 4. Large-Scale Impact and Earth History Richard A.F. Grieve Volume 44, Number 1, 2017 Article abstract The current record of large-scale impact on Earth consists of close to 200 URI: https://id.erudit.org/iderudit/1039604ar impact structures and some 30 impact events recorded in the stratigraphic record, only some of which are related to known structures. It is a preservation See table of contents sample of a much larger production population, with the impact rate on Earth being higher than that of the moon. This is due to the Earth's larger physical and gravitational cross-sections, with respect to asteroidal and cometary Publisher(s) bodies entering the inner solar system. While terrestrial impact structures have been studied as the only source of ground-truth data on impact as a The Geological Association of Canada planetary process, it is becoming increasingly acknowledged that large-scale impact has had its effects on the geologic history of the Earth, itself. As ISSN extremely high energy events, impacts redistribute, disrupt and reprocess target lithologies, resulting in topographic, structural and thermal anomalies in 0315-0941 (print) the upper crust. This has resulted in many impact structures being the source 1911-4850 (digital) of natural resources, including some world-class examples, such as gold and uranium at Vredefort, South Africa, Ni–Cu–PGE sulphides at Sudbury, Canada Explore this journal and hydrocarbons from the Campeche Bank, Mexico. -
Manicouagan: Asteroid Circuit by Kayak Rob Rutten
Manicouagan: asteroid circuit by kayak Rob Rutten Photographs: https://webspace.science.uu.nl/˜rutte101/travel-albums/manicouagan/album.html Website: https://webspace.science.uu.nl/˜rutte101/Kayak_Manicouagan.html During August 2006 my wife Rietje and I fulfilled an old dream: to kayak the annular Manicouagan impact crater lake in Quebec. We paddled the full 200-km circuit, a pure wilderness voyage in magnificent scenery. Manicouagan Reservoir: the lake is the combined product of one of the largest known impacts on Earth, the subsequent ice ages, and a gigantic retention dam. It is shaped as a 10 km wide annulus around a nearly circular island of 56 km diameter. Both the lake and the island measure 2000 km2. Together, they appear as the beautiful “Eye of Quebec” on photographs from space. It is one of the most striking structures on the face of the Earth and the most obvious impact scar. Impact: a 5-km bolide (asteroid or a yet larger comet) hit this area, then part of Panagaea, 214 million years ago. It caused a fireball as far as present-day New York, a melting pot boiling the local bedrock over 50 km extent and 9 km depth, and a crater wall of about 100 km diameter. This event occurred during the Mesozoical Triassic, a warm era in which therapsids including pre-mammals throve, halfway between the previous and present cold episodes. Surprisingly, the massive extinction at the Triassic-Jurassic transition, starting the age of the dinosaurs and as bad as the K-T extinction ending it, is dated 13 My after the impact (the even worse Permian-Triassic 1 “great dying” event took place 37 My before it). -
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Atlantic Geoscience Society ABSTRACTS 38th Colloquium & Annual General Meeting 2012 Moncton, New Brunswick The 2012 Colloquium & Annual General Meeting was held at the Delta Beauséjour Hotel, Moncton, New Brunswick, on February 3 and 4, 2012. On behalf of the society, we thank Colloquium Chairperson Susan Johnson and her organizing committee (Serge Allard, Pam Dickinson, Jacob Hanley, Nicole Hatheway, Fenton Isenor, Dan Kontak, Maurice Mazerolle, Steve McCutcheon, Mike Parkhill, Cyndie Pitre, Brian Roulston, Ian Spooner, Jim Walker, and Reg Wilson) for providing an excellent meeting. We also wish to acknowledge support of the corporate sponsors: Potash Corp.(Potash Company of Saskatchewan); SWN Resources; Xstrata Zinc; Association of Professional Engineers and Geoscientists of New Brunswick; Natural Resources Canada, Geological Survey of Canada (Atlantic); C.I.M.(New Brunswick Branch); Corridor Resources; and the New Brunswick Geological Surveys Branch. In the following pages, we are pleased to publish the abstracts of oral presentations and posters from the Colloquium, which focused on the following themes: Paleontology in Atlantic Canada; Surficial Geology and Geochemistry; Stratigraphy and Sedimentology; Tectonics and Structure; Economic Geology; and Current Research in the Atlantic Provinces (and Beyond); a workshop on Practical Application of Fluid Inclusion Studies to Ore Deposit Settings; and a tour of Potash Corp’s, Potash Mine in Sussex, New Brunswick. THE EDITORS ATLANTIC GEOLOGY 48, 20-53(2012) Copyright © Atlantic Geology 2012 0843-5561|12|00020-53$6.25|0 Atlantic Geology . Volume 48 . 2012 21 New Brunswick surficial mapping program: review and Impact of inconsistent density scaling on physical highlights analogue models of margin-scale salt tectonics Serge Allard and Pam Dickinson Janice Allen1 and Christopher Beaumont2 Geological Surveys Branch, New Brunswick Department of Natural 1. -
Triassic–Jurassic Extinction Event
Triassic–Jurassic extinction event The Triassic–Jurassic extinction event marks the boundary between the Triassic and Jurassic % Marine extinction intensity during the Phanerozoic periods, 201.3 million years ago,[1] and is one of the major extinction events of the Phanerozoic P–Tr eon, profoundly affecting life on land and in the oceans. In the seas, a whole class (conodonts)[2] Cap K–Pg and 23–34% of marine genera disappeared.[3][4] O–S Tr–J Late D On land, all archosaurs other than (H) crocodylomorphs (Sphenosuchia and Crocodyliformes) and Avemetatarsalia (pterosaurs and dinosaurs), some remaining therapsids, and many of the large amphibians Millions of years ago became extinct. Statistical analysis of marine losses at this time suggests that the decrease in The blue graph shows the apparent percentage (not the absolute number) of marine animal genera becoming diversity was caused more by a decrease in extinct during any given time interval. It does not [5] speciation than by an increase in extinctions. represent all marine species, just those that are readily fossilized. The labels of the traditional "Big Five" extinction events and the more recently recognised End- Capitanian extinction event are clickable hyperlinks; see Contents Extinction event for more details. (source and image info) Effects Marine invertebrates Marine vertebrates Terrestrial vertebrates Current theories Gradual processes Extraterrestrial impact Volcanic eruptions References Literature External links Effects This event vacated terrestrial ecological niches, allowing the dinosaurs to assume the dominant roles in the Jurassic period. This event happened in less than 10,000 years and occurred just before Pangaea started to break apart. -
Atlantic Universities Geoscience Conference 2011: 61St Annual Conference, October 20-22, 2011
Document generated on 09/30/2021 1:10 p.m. Atlantic Geology Atlantic Universities Geoscience Conference 2011: 61st Annual Conference, October 20-22, 2011 Volume 47, 2011 URI: https://id.erudit.org/iderudit/ageo47abs03 See table of contents Publisher(s) Atlantic Geoscience Society ISSN 0843-5561 (print) 1718-7885 (digital) Explore this journal Cite this document (2011). Atlantic Universities Geoscience Conference 2011: 61st Annual Conference, October 20-22, 2011. Atlantic Geology, 47, 201–210. All rights reserved © Atlantic Geology, 2011 This document is protected by copyright law. Use of the services of Érudit (including reproduction) is subject to its terms and conditions, which can be viewed online. https://apropos.erudit.org/en/users/policy-on-use/ This article is disseminated and preserved by Érudit. Érudit is a non-profit inter-university consortium of the Université de Montréal, Université Laval, and the Université du Québec à Montréal. Its mission is to promote and disseminate research. https://www.erudit.org/en/ atlantic geology . volume 47 . 2011 201 Atlantic Universities Geoscience Conference 2011 ABSTRACTS October 20–22, 2011 61st ANNUAL CONFERENCE HOstED BY: ALEXANDER MURRAY GEOLOGICAL CLUB MEMORIAL UNIVERsItY OF NEWFOUNDLAND, st. JOHN’s, NEWFOUNDLAND Abstracts from the Atlantic Universities Geoscience Conference (AUGC) are published annually in Atlan- tic Geology. Such publication provides a permanent record of the abstracts, and also focuses attention on the excellent quality of the oral presentations and posters and the interesting and varied geoscience topics that they cover. tHE EDItORs AtLANtIC GEOLOGY 47, 201–210 (2011) Copyright © Atlantic Geology, 2011 0843-5561|08|00185–10$2.50|O atlantic geology . -
The Geological Record of Meteorite Impacts
THE GEOLOGICAL RECORD OF METEORITE IMPACTS Gordon R. Osinski Canadian Space Agency, 6767 Route de l'Aeroport, St-Hubert, QC J3Y 8Y9 Canada, Email: [email protected] ABSTRACT 2. FORMATION OF METEORITE IMPACT STRUCTURES Meteorite impact structures are found on all planetary bodies in the Solar System with a solid The formation of hypervelocity impact craters has surface. On the Moon, Mercury, and much of Mars, been divided, somewhat arbitrarily, into three main impact craters are the dominant landform. On Earth, stages [3] (Fig. 2): (1) contact and compression, (2) 174 impact sites have been recognized, with several excavation, and (3) modification. A further stage of more new craters being discovered each year. The “hydrothermal and chemical alteration” is also terrestrial impact cratering record is critical for our considered as a separate, final stage in the cratering understanding of impacts as it currently provides the process (e.g., [4]), and is also described below. only ground-truth data on which to base interpretations of the cratering record of other planets and moons. In this contribution, I summarize the processes and products of impact cratering and provide and an up-to-date assessment of the geological record of meteorite impacts. 1. INTRODUCTION It is now widely recognized that impact cratering is a ubiquitous geological process that affects all planetary objects with a solid surface (e.g., [1]). One only has to look up on a clear night to see that impact structures are the dominant landform on the Moon. The same can be said of all the rocky and icy bodies in the solar system that have retained portions of their earliest crust.