AND GEOLOGY of the SURROUNDING AREA I
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
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. -
Mannville Group of Saskatchewan
Saskatchewan Report 223 Industry and Resources Saskatchewan Geological Survey Jura-Cretaceous Success Formation and Lower Cretaceous Mannville Group of Saskatchewan J.E. Christopher 2003 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: Clearwater River Valley at Contact Rapids (1.5 km south of latitude 56º45'; latitude 109º30'), Saskatchewan. View towards the north. Scarp of Middle Devonian Methy dolomite at right. Dolomite underlies the Lower Cretaceous McMurray Formation outcrops recessed in the valley walls. Photo by J.E. Christopher. Additional copies of this digital report may be obtained by contacting: Saskatchewan Industry and Resources Publications 2101 Scarth Street, 3rd floor Regina, SK S4P 3V7 (306) 787-2528 FAX: (306) 787-2527 E-mail: [email protected] Recommended Citation: Christopher, J.E. (2003): Jura-Cretaceous Success Formation and Lower Cretaceous Mannville Group of Saskatchewan; Sask. Industry and Resources, Report 223, CD-ROM. Editors: C.F. Gilboy C.T. Harper D.F. Paterson RnD Technical Production: E.H. Nickel M.E. Opseth Production Editor: C.L. Brown Saskatchewan Industry and Resources ii Report 223 Foreword This report, the first on CD to be released by the Petroleum Geology Branch, describes the geology of the Success Formation and the Mannville Group wherever these units are present in Saskatchewan. -
CTI / RHA Community/Region Index Jan-19
CTI / RHA Community/Region Index Jan-19 Location CTI Region Health Authority A Aghaming North Eastman Interlake-Eastern Health Akudik Churchill WRHA Albert North Eastman Interlake-Eastern Health Albert Beach North Eastman Interlake-Eastern Health Alexander Brandon Prairie Mountain Health Alfretta (see Hamiota) Assiniboine North Prairie Mountain Health Algar Assiniboine South Prairie Mountain Health Alpha Central Southern Health Allegra North Eastman Interlake-Eastern Health Almdal's Cove Interlake Interlake-Eastern Health Alonsa Central Southern Health Alpine Parkland Prairie Mountain Health Altamont Central Southern Health Albergthal Central Southern Health Altona Central Southern Health Amanda North Eastman Interlake-Eastern Health Amaranth Central Southern Health Ambroise Station Central Southern Health Ameer Assiniboine North Prairie Mountain Health Amery Burntwood Northern Health Anama Bay Interlake Interlake-Eastern Health Angusville Assiniboine North Prairie Mountain Health Anola North Eastman Interlake-Eastern Health Arbakka South Eastman Southern Health Arbor Island (see Morton) Assiniboine South Prairie Mountain Health Arborg Interlake Interlake-Eastern Health Arden Assiniboine North Prairie Mountain Health Argue Assiniboine South Prairie Mountain Health Argyle Interlake Interlake-Eastern Health Arizona Central Southern Health Amaud South Eastman Southern Health Ames Interlake Interlake-Eastern Health Amot Burntwood Northern Health Anola North Eastman Interlake-Eastern Health Arona Central Southern Health Arrow River Assiniboine -
Errata Since Publication in June 2010, We Have Discovered an Number of Items That Needed Either Clarity Or Correction
Metis Health Status and Healthcare Use in Manitoba Errata Since publication in June 2010, we have discovered an number of items that needed either clarity or correction. Updated pages are # 10-11, 56, 141-142, 234-235, 254, 272, 286, 299-301, 456, 460, 480 &582. All the updated pages are attached. Manitoba Centre for Health Policy Errata_Nov_2012.indd 1 28/11/2012 2:04:52 PM Chapter 1: Introduction and Methods This page edited September 23, 2010. Figure 1.4: Villages, Towns, Cities, or Unorganized Territories Where Metis Live in Manitoba, 2009 Where Metis Live in Manitoba, 2009 Villages, towns, cities, or unorganized territories See next page for Metis 1 community locations code key 2 3 6 14 5 4 7 8 11 10 19 15 20 9 21 22 12 16 18 23 24 13 17 2825 27 26 29 30 31 37 32 3433 35 38 36 39 119 42 40 41 43 44 4950 65 51 45 66 58 67 52 68 72 4647 53 69 55 70 54 71 48 73 120 56 57 75 121 62 74 59 76 77 80 60 64 78 79 104 61 63 81 123122 105 82 83 109 124 126 106 84 85 86 108 125 107 89 88 94 90 93 127 110 116 91 87 11792 103 95 98 102 111 96 100 101 115 118 99 97 139 128 112 129 130 132 133 134 113 136 131 135 114 137 138 Source: MCHP/MMF, 2010 10 | University of Manitoba Metis Health Status and Healthcare Use in Manitoba This page edited September 23, 2010. -
Section M: Community Support
Section M: Community Support Page 251 of 653 Community Support Health Canada’s Regional Advisor for Children Special Services has developed the Children’s Services Reference Chart for general information on what types of health services are available in the First Nations’ communities. Colour coding was used to indicate where similar services might be accessible from the various community programs. A legend that explains each of the colours /categories can be found in the centre of chart. By using the chart’s colour coding system, resource teachers may be able to contact the communities’ agencies and begin to open new lines of communication in order to create opportunities for cost sharing for special needs services with the schools. However, it needs to be noted that not all First Nations’ communities offer the depth or variety of the services described due to many factors (i.e., budgets). Unfortunately, there are times when special needs services are required but cannot be accessed for reasons beyond the school and community. It is then that resource teachers should contact Manitoba’s Regional Advisor for Children Special Services to ask for direction and assistance in resolving the issue. Manitoba’s Regional Advisor, Children’s Special Services, First Nations and Inuit Health Programs is Mary L. Brown. Phone: 204-‐983-‐1613 Fax: 204-‐983-‐0079 Email: [email protected] On page two is the Children’s Services Reference Chart and on the following page is information from the chart in a clearer and more readable format including -
Lake Manitoba and Lake St. Martin Outlet Channels
Project Description Lake Manitoba and Lake St. Martin Outlet Channels Prepared for: Canadian Environmental Assessment Agency Submitted by: Manitoba Infrastructure January 2018 Project Description – January 2018 Table of Contents 1 GENERAL INFORMATION AND CONTACTS ................................................... 1 1.1 Nature of the Project and Proposed Location ..................................................... 1 1.2 Proponent Information ........................................................................................ 3 1.2.1 Name of the Project ......................................................................................... 3 1.2.2 Name of the Proponent ................................................................................... 3 1.2.3 Address of the Proponent ................................................................................ 3 1.2.4 Chief Executive Officer .................................................................................... 3 1.2.5 Principal Contact Person ................................................................................. 3 1.3 Jurisdictions and Other Parties Consulted .......................................................... 6 1.4 Environmental Assessment Requirements ......................................................... 7 1.4.1 Canadian Environmental Assessment Act, 2012 (Canada) ............................ 7 1.4.2 The Environment Act (Manitoba) ..................................................................... 8 1.5 Other Regulatory Requirements ........................................................................ -
Geology and Impact Features of Vargeo Dome, Southern Brazil
Meteoritics & Planetary Science 1–21 (2011) doi: 10.1111/j.1945-5100.2011.01312.x Geology and impact features of Vargea˜o Dome, southern Brazil Alvaro P. CRO´STA1*,Ce´sar KAZZUO-VIEIRA2, Lidia PITARELLO3, Christian KOEBERL3,4, and Thomas KENKMANN5 1Institute of Geosciences, University of Campinas, Campinas, Brazil 2Petro´leo Brasileiro S.A.––Petrobras, Brazil 3Department of Lithospheric Research, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria 4Natural History Museum, Burgring 7, A-1010 Vienna, Austria 5Institut fu¨ r Geowissenschaften––Geologie, Albert-Ludwigs-Universita¨ t Freiburg, Albertstrasse 23-b, 79104 Freiburg, Germany *Corresponding author. E-mail: [email protected] (Received 14 December 2010; revision accepted 2 November 2011) Abstract–Vargea˜o Dome (southern Brazil) is a circular feature formed in lava flows of the Lower Cretaceous Serra Geral Formation and in sandstones of the Parana´Basin. Even though its impact origin was already proposed in the 1980s, little information about its geological and impact features is available in the literature. The structure has a rim-rim diameter of approximately 12 km and comprises several ring-like concentric features with multiple concentric lineaments. The presence of a central uplift is suggested by the occurrence of deformed sandstone strata of the Botucatu and Pirambo´ia formations. We present the morphological ⁄ structural characteristics of Vargea˜o Dome, characterize the different rock types that occur in its interior, mainly brecciated volcanic rocks (BVR) of the Serra Geral Formation, and discuss the deformation and shock features in the volcanic rocks and in sandstones. These features comprise shatter cones in sandstone and basalt, as well as planar microstructures in quartz. -
The Tennessee Meteorite Impact Sites and Changing Perspectives on Impact Cratering
UNIVERSITY OF SOUTHERN QUEENSLAND THE TENNESSEE METEORITE IMPACT SITES AND CHANGING PERSPECTIVES ON IMPACT CRATERING A dissertation submitted by Janaruth Harling Ford B.A. Cum Laude (Vanderbilt University), M. Astron. (University of Western Sydney) For the award of Doctor of Philosophy 2015 ABSTRACT Terrestrial impact structures offer astronomers and geologists opportunities to study the impact cratering process. Tennessee has four structures of interest. Information gained over the last century and a half concerning these sites is scattered throughout astronomical, geological and other specialized scientific journals, books, and literature, some of which are elusive. Gathering and compiling this widely- spread information into one historical document benefits the scientific community in general. The Wells Creek Structure is a proven impact site, and has been referred to as the ‘syntype’ cryptoexplosion structure for the United State. It was the first impact structure in the United States in which shatter cones were identified and was probably the subject of the first detailed geological report on a cryptoexplosive structure in the United States. The Wells Creek Structure displays bilateral symmetry, and three smaller ‘craters’ lie to the north of the main Wells Creek structure along its axis of symmetry. The question remains as to whether or not these structures have a common origin with the Wells Creek structure. The Flynn Creek Structure, another proven impact site, was first mentioned as a site of disturbance in Safford’s 1869 report on the geology of Tennessee. It has been noted as the terrestrial feature that bears the closest resemblance to a typical lunar crater, even though it is the probable result of a shallow marine impact. -
Carte Des Zones Contrôlées Controlled Area
280 RY LAKE 391 MYSTE Nelson House Pukatawagan THOMPSON 6 375 Sherridon Oxford House Northern Manitoba ds River 394 Nord du GMo anitoba 393 Snow Lake Wabowden 392 6 0 25 50 75 100 395 398 FLIN FLON Kilometres/kilomètres Lynn Lake 291 397 Herb Lake 391 Gods Lake 373 South Indian Lake 396 392 10 Bakers Narrows Fox Mine Herb Lake Landing 493 Sherritt Junction 39 Cross Lake 290 39 6 Cranberry Portage Leaf Rapids 280 Gillam 596 374 39 Jenpeg 10 Wekusko Split Lake Simonhouse 280 391 Red Sucker Lake Cormorant Nelson House THOMPSON Wanless 287 6 6 373 Root Lake ST ST 10 WOODLANDS CKWOOD RO ANDREWS CLEMENTS Rossville 322 287 Waasagomach Ladywood 4 Norway House 9 Winnipeg and Area 508 n Hill Argyle 323 8 Garde 323 320 Island Lake WinnBRiOpKEeNHEgAD et ses environs St. Theresa Point 435 SELKIRK 0 5 10 15 20 East Selkirk 283 289 THE PAS 67 212 l Stonewall Kilometres/Kilomètres Cromwel Warren 9A 384 283 509 KELSEY 10 67 204 322 Moose Lake 230 Warren Landing 7 Freshford Tyndall 236 282 6 44 Stony Mountain 410 Lockport Garson ur 220 Beausejo 321 Westray Grosse Isle 321 9 WEST ST ROSSER PAUL 321 27 238 206 6 202 212 8 59 Hazelglen Cedar 204 EAST ST Cooks Creek PAUL 221 409 220 Lac SPRINGFIELD Rosser Birds Hill 213 Hazelridge 221 Winnipeg ST FRANÇOIS 101 XAVIER Oakbank Lake 334 101 60 10 190 Grand Rapids Big Black River 27 HEADINGLEY 207 St. François Xavier Overflowing River CARTIER 425 Dugald Eas 15 Vivian terville Anola 1 Dacotah WINNIPEG Headingley 206 327 241 12 Lake 6 Winnipegosis 427 Red Deer L ake 60 100 Denbeigh Point 334 Ostenfeld 424 Westgate 1 Barrows Powell Na Springstein 100 tional Mills E 3 TACH ONALD Baden MACD 77 MOUNTAIN 483 300 Oak Bluff Pelican Ra Lake pids Grande 2 Pointe 10 207 eviève Mafeking 6 Ste-Gen Lac Winnipeg 334 Lorette 200 59 Dufresne Winnipegosis 405 Bellsite Ile des Chênes 207 3 RITCHOT 330 STE ANNE 247 75 1 La Salle 206 12 Novra St. -
Home Care Office Listings
HOME CARE OFFICE LISTINGS LOCATION CATCHMENT AREA OFFICE CONTACT NUMBER(S) ARBORG - Arborg Community Health Office Arborg, Matheson Island RM, Pine Dock, Riverton, 204-376-5559 ext. 1 & 7 317 River Road, Box 423, Arborg, MB R0C 0A0 Icelandic Lodge & Sunrise Lodge Fax: 204-376-5970 ASHERN – Lakeshore General Hospital Ashern, RM of Grahamdale & Siglunes, Camper, 204-768-5225 1 Steenson Drive, Ashern, MB, R0C 0A0 Glencora, Gypsumville, Moosehorn, Mulvihill, Pioneer- Fax: 204-768-3879 Heritage, Vogar BEAUSEJOUR – 71107 Hwy 302S Beausejour & Whitemouth 204-268-6747 Box 209, Beausejour, MB R0E 0C0 204-268-6721 204-268-6720 Fax: 204-268-6727 ERIKSDALE – (SEE LUNDAR) FISHER BRANCH – Fisher Branch PCH Chalet Lodge, Dallas, Fisher Branch, Fisher River, Hodgson, 204-372-7306 Poplarfield, Poplar Villa, RM of Fisher 7 Chalet Dr., Box 119, Fisher Branch, MB R0C 0Z0 Fax: 204-372-8710 GIMLI – Gimli Community Health Office Arnes, Camp Morton, Fraserwood, Gimli RM, Parts of 204-642-4581 Armstrong RM, Meleb, malonton, Matlock (Rd 97N), 120-6TH Avenue, Box 250, Gimli, MB R0C 1B0 204-642-4596 Rockwood RM, Ponemah, Sandy Hook & Winnipeg Beach 204-642-1607 Fax: 204-642-4924 LAC DU BONNET – Lac du Bonnet District Health Centre Bird River, Great Falls, Lac du Bonnet, Lee River, Leisure 204-345-1217 89 McIntosh Street, Lac du Bonnet, MB R0E 1A0 Falls, Pinawa, Pointe du Bois, Wendigo, White Mud Falls 204-345-1235 Fax: 204-345-8609 LUNDAR/ERIKSDALE – Lundar Health Centre Coldwell RM, Town of Clarkleigh, Lundar, RM & Town of 204-762-6504 Eriksdale 97-1ST Street South, Box 296, Lundar, MB R0C 1Y0 Fax: 204-762-5164 OAKBANK – Kin Place Health Complex Anola, Cooks Creek, Dawson Rd (portion), Deacons 204-444-6139 689 Main Street, Oakbank, MB R0E 1J0 Corner, Dugald, Hazelridge, Queensvalley, Meadow 204-444-6119 Crest, Oakbank, Pine Ridge, Symington St. -
Do Faults Preserve a Record of Seismic Slip: a Second Opinion
Journal of Structural Geology 78 (2015) 1e26 Contents lists available at ScienceDirect Journal of Structural Geology journal homepage: www.elsevier.com/locate/jsg Review article Do faults preserve a record of seismic slip: A second opinion * Christie D. Rowe a, , W. Ashley Griffith b a Department of Earth & Planetary Sciences, McGill University, 3450 University St., Montreal, QC H3A 0E8, Canada b Department of Earth and Environmental Sciences, University of Texas at Arlington, Box 19049, Arlington, TX 76019, USA article info abstract Article history: Exhumed fault zones offer insights into deformation processes associated with earthquakes in unpar- Received 31 January 2015 alleled spatial resolution; however it can be difficult to differentiate seismic slip from slow or aseismic Received in revised form slip based on evidence in the rock record. Fifteen years ago, Cowan (1999) defined the attributes of 5 June 2015 earthquake slip that might be preserved in the rock record, and he identified pseudotachylyte as the only Accepted 9 June 2015 reliable indicator of past earthquakes found in ancient faults. This assertion was based on models of Available online 12 June 2015 frictional heat production (Sibson, 1975, 1986) providing evidence for fast slip. Significant progress in fault rock studies has revealed a range of reaction products which can be used to detect frictional heating Keywords: Fault rocks at peak temperatures less than the melt temperature of the rock. In addition, features formed under Paleoseismology extreme transient stress conditions associated with the propagating tip of an earthquake rupture can Pseudotachylyte now be recognized in the rock record, and are also uniquely seismic. -
Shocked Monazite Chronometry: Integrating Microstructural and in Situ Isotopic Age Data for Determining Precise Impact Ages
Contrib Mineral Petrol (2017) 172:11 DOI 10.1007/s00410-017-1328-2 ORIGINAL PAPER Shocked monazite chronometry: integrating microstructural and in situ isotopic age data for determining precise impact ages Timmons M. Erickson1 · Nicholas E. Timms1 · Christopher L. Kirkland1 · Eric Tohver2 · Aaron J. Cavosie1,3 · Mark A. Pearce4 · Steven M. Reddy1 Received: 30 August 2016 / Accepted: 10 January 2017 © Springer-Verlag Berlin Heidelberg 2017 Monazite is a robust geochronometer and {110}, {212}, and type two (irrational) twin planes with Abstract ̄ ̄ ̄ ̄ occurs in a wide range of rock types. Monazite also records rational shear directions in [011] and [110]. SIMS U–Th– shock deformation from meteorite impact but the effects Pb analyses of the plastically deformed parent domains of impact-related microstructures on the U–Th–Pb sys- reveal discordant age arrays, where discordance scales with tematics remain poorly constrained. We have, therefore, increasing plastic strain. The correlation between discord- analyzed shock-deformed monazite grains from the central ance and strain is likely a result of the formation of fast uplift of the Vredefort impact structure, South Africa, and diffusion pathways during the shock event. Neoblasts in impact melt from the Araguainha impact structure, Brazil, granular monazite domains are strain-free, having grown using electron backscatter diffraction, electron microprobe during the impact events via consumption of strained par- elemental mapping, and secondary ion mass spectrometry ent grains. Neoblastic monazite from the Inlandsee leu- (SIMS). Crystallographic orientation mapping of monazite cogranofels at Vredefort records a 207Pb/206Pb age of grains from both impact structures reveals a similar com- 2010 ± 15 Ma (2σ, n = 9), consistent with previous impact bination of crystal-plastic deformation features, includ- age estimates of 2020 Ma.