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Vegetation and Fire at the Last Glacial Maximum in Tropical South America
Past Climate Variability in South America and Surrounding Regions Developments in Paleoenvironmental Research VOLUME 14 Aims and Scope: Paleoenvironmental research continues to enjoy tremendous interest and progress in the scientific community. The overall aims and scope of the Developments in Paleoenvironmental Research book series is to capture this excitement and doc- ument these developments. Volumes related to any aspect of paleoenvironmental research, encompassing any time period, are within the scope of the series. For example, relevant topics include studies focused on terrestrial, peatland, lacustrine, riverine, estuarine, and marine systems, ice cores, cave deposits, palynology, iso- topes, geochemistry, sedimentology, paleontology, etc. Methodological and taxo- nomic volumes relevant to paleoenvironmental research are also encouraged. The series will include edited volumes on a particular subject, geographic region, or time period, conference and workshop proceedings, as well as monographs. Prospective authors and/or editors should consult the series editor for more details. The series editor also welcomes any comments or suggestions for future volumes. EDITOR AND BOARD OF ADVISORS Series Editor: John P. Smol, Queen’s University, Canada Advisory Board: Keith Alverson, Intergovernmental Oceanographic Commission (IOC), UNESCO, France H. John B. Birks, University of Bergen and Bjerknes Centre for Climate Research, Norway Raymond S. Bradley, University of Massachusetts, USA Glen M. MacDonald, University of California, USA For futher -
Southern Accent July 1953 - September 1954
Southern Adventist University KnowledgeExchange@Southern Southern Accent - Student Newspaper University Archives & Publications 1953 Southern Accent July 1953 - September 1954 Southern Missionary College Follow this and additional works at: https://knowledge.e.southern.edu/southern_accent Recommended Citation Southern Missionary College, "Southern Accent July 1953 - September 1954" (1953). Southern Accent - Student Newspaper. 33. https://knowledge.e.southern.edu/southern_accent/33 This Book is brought to you for free and open access by the University Archives & Publications at KnowledgeExchange@Southern. It has been accepted for inclusion in Southern Accent - Student Newspaper by an authorized administrator of KnowledgeExchange@Southern. For more information, please contact [email protected]. SOUTHERN msmm college UBRMV THE OUTH^^ ACCENT Souchern Missionary^ollege, Collegedale, Tennessee, July 3. 1953 o lleven SMC Graduates Ordained Young Men Ordained to M^ Kennedy Supervises Varied Gospel Ministry f. at Five Iprog am of Summer Activities Southern Union Camp Meetings fcht chapel scat Wednesday e c n ng br ngs these comn ents for once tadi week we ha\e chapel Many % r cd ch-ipel progran s ha e been '> p anned bj Dr R chard Hammill of the college rfOMffliililiins ! Thursday udenb and it d(-r e\en ng at the ball field br ngs torth to bu Id up cred cheers as a runner si des the hon e or as the umpire calls 6tr kc Three Student o^ram Comm ... and h ult) al ke mansh p of Profc share the thr II of a hon e run V d) hi\e out! ned Come th me -
"Do Not Eat" Fish & "Avoid Foam" Advisories
Residents should continue following 'Do Not Eat' and 'Avoid Foam' advisories for Huron River and several nearby waterbodies More fish tissue and surface water data needed before advisories can be relaxed FOR IMMEDIATE RELEASE July 2, 2020 Contact: Lynn Sutfin, 517-241-2112 LANSING, Mich.- With the summer recreation season in full swing, the Michigan Department of Health and Human Services (MDHHS) is issuing a reminder that everyone should avoid eating fish from the Huron River and several connected waterbodies, and avoid foam on Michigan lakes and rivers known to have per- and polyfluoroalkyl substances (PFAS) in the water. “MDHHS advises residents to continue following the ‘Do Not Eat’ fish and the ‘Avoid Foam’ advisories in place for the Huron River,” said Dr. Joneigh Khaldun, chief medical executive and chief deputy for health at MDHHS. “Both advisories remain in effect until scientific evidence indicates that advisories are no longer necessary.” Fish Advisory The “Do not Eat” fish advisory is based on perfluorooctane sulfonate (PFOS) fish data from the Michigan Department of Environment, Great Lakes, and Energy (EGLE). In 2018, high PFOS levels were found in fish filets collected from Kent Lake, Base Line Lake and Argo Pond. Additionally, high PFOS surface water levels were found from Norton Creek downstream to Barton Pond. In August 2018, MDHHS issued a ‘Do Not Eat’ advisory for fish from the Huron River where North Wixom Road crosses into Oakland County to the mouth of the Huron River as it enters Lake Erie in Wayne County. The fish -
The Cordilleran Ice Sheet 3 4 Derek B
1 2 The cordilleran ice sheet 3 4 Derek B. Booth1, Kathy Goetz Troost1, John J. Clague2 and Richard B. Waitt3 5 6 1 Departments of Civil & Environmental Engineering and Earth & Space Sciences, University of Washington, 7 Box 352700, Seattle, WA 98195, USA (206)543-7923 Fax (206)685-3836. 8 2 Department of Earth Sciences, Simon Fraser University, Burnaby, British Columbia, Canada 9 3 U.S. Geological Survey, Cascade Volcano Observatory, Vancouver, WA, USA 10 11 12 Introduction techniques yield crude but consistent chronologies of local 13 and regional sequences of alternating glacial and nonglacial 14 The Cordilleran ice sheet, the smaller of two great continental deposits. These dates secure correlations of many widely 15 ice sheets that covered North America during Quaternary scattered exposures of lithologically similar deposits and 16 glacial periods, extended from the mountains of coastal south show clear differences among others. 17 and southeast Alaska, along the Coast Mountains of British Besides improvements in geochronology and paleoenvi- 18 Columbia, and into northern Washington and northwestern ronmental reconstruction (i.e. glacial geology), glaciology 19 Montana (Fig. 1). To the west its extent would have been provides quantitative tools for reconstructing and analyzing 20 limited by declining topography and the Pacific Ocean; to the any ice sheet with geologic data to constrain its physical form 21 east, it likely coalesced at times with the western margin of and history. Parts of the Cordilleran ice sheet, especially 22 the Laurentide ice sheet to form a continuous ice sheet over its southwestern margin during the last glaciation, are well 23 4,000 km wide. -
MAPPING and CHARACTERIZING a RELICT LACUSTRINE DELTA in CENTRAL LOWER MICHIGAN by Christopher B. Connallon a THESIS Submitted T
MAPPING AND CHARACTERIZING A RELICT LACUSTRINE DELTA IN CENTRAL LOWER MICHIGAN By Christopher B. Connallon A THESIS Submitted to Michigan State University in partial fulfillment of the requirements for the degree of Geography – Master of Science 2015 ABSTRACT MAPPING AND CHARACTERIZING A RELICT LACUSTRINE DELTA IN CENTRAL LOWER MICHIGAN By Christopher B. Connallon This research focuses on, mapping and characterizing the Chippewa River delta - a sandy, relict delta of Glacial Lake Saginaw in central Lower Michigan. The delta was first identified in a GIS, using digital soil data, as the sandy soils of the delta stand in contrast to the loamier soils of the lake plain. I determined the textural properties of the delta sediment from 142 parent material samples at ≈1.5 m depth. The data were analyzed in a GIS to identify textural trends across the delta. Data from 3276 water well logs across the delta, and from 185 sites within two-storied soils on the delta margin, were used to estimate the thickness of delta sands and to refine the delta's boundary. The delta heads near Mount Pleasant, expanding east, onto the Lake Saginaw plain. It is ≈18 km wide and ≈38 km long and comprised almost entirely of sandy sediment. As expected, delta sands generally thin away from the head, where sediments are ≈4-7m thick. In the eastern, lower portion of the delta, sediments are considerably thinner (≈<1-2m). The texturally coarsest parts of the delta are generally coincident with former shorezones. The thick, upper delta portion is generally coincident with the relict shorelines of Lakes Saginaw and Arkona (≈17.1k to ≈ 16k years BP), whereas most of the thin, distal, lower delta is generally associated with Lake Warren (≈15k years BP). -
Bibliography of PHYSI~AL LIMNOLOGY
STATE OF OHIO DEPARTMENT OF NATURAL RESOURCES DIVISION OF SHORE EROSION DIVISION OF GEOLOGICAL SURVEY REPORT OF INVESTIGATIONS NO. 25 (CONTRIBUTION NO. 4 LAKE ERIE GEOLOGICAL RESEARCH PROGRAM) Bibliography Of PHYSI~AL LIMNOLOGY 1781 ••••1954 COLUMBUS 1955 STATE OF OHIO Frank J. Lausche, Governor DEPAR 1MENT OF NATURAL RESOURCES A. W. Marion, Director NATURAL RESOURCES COMMISSION George Wenger, Chairman John A. Slipher, Bryce Browning, Vice Chairman Secretary C. D. Blubaugh Dr. John L. Rich Dr. C. L. Dow Milton Ronsheim A. W. Marion Dean L. L. Rummell DIVISION OF GEOLOGICAL SURVEY John H. Melvin, Chief DIVIS ION OF SHORE EROSION F . 0 , Kugle , Chief STATE OF OHIO Frank J. Lausche, Governor DEPARTMENT OF NATURAL RESOURCES A. W. Marion, Director DIVISION OF SHORE EROSION F. 0. Kugel, Chief DIVISION OF GEOLOGICAL SURVEY John H. Melvin, Chief REPORT OF INVESTIGATIONS NO. 2 5 (CONTRIBUTION NO. 4 LAKE ERIE GEOLOGICAL RESEARCH PROGRAM) BIBLIOGRAPHY OF PHYSICAL LIMNOLOGY 1781 .... 1954 By James L. Verber This publication is a cooperative project of the Division of Shore Erosion and The Division of Geological Survey. The research upon which the publication is based has been sponsored chiefly by t the Division of Shore Erosion. i COLUMBUS, 1955 I Blank Page t:;ONTENTS Page INTRODUCTION •••••••••• v Organization of the Index • v Suggestions on using the Index vi ABBREVIATIONS • vii BmLIOGRAPHY 1 INDEX and ALPHABETICAL LIST OF LAKES CITED 45 ADDENDUM WITH INDEX . • . 54 iii Blank Page INTBODU~TION The Bibliography of Physical Limnology, 1781- their assistance in preparing the manuscript for publica- 1953, contains both a bibliography and subject index tion. -
8 Ka Lake Stanley Lowstand on the Alpena‐
Research Article Archaeological Landscapes during the 10–8 ka Lake Stanley Lowstand on the Alpena-Amberley Ridge, Lake Huron Elizabeth Sonnenburg1,* and John O’Shea2 1Stantec Consulting Ltd., Ontario, Canada 2Museum of Anthropological Archaeology, University of Michigan, Ann Arbor, Michigan, USA Correspondence Archaeologists have long been interested in the Lake Stanley lowstand event *Corresponding author; E-mail: (10–8 ka) in the Lake Huron basin, as archaeological sites from the Late Pale- [email protected] oindian/Early Archaic cultural periods were inundated by subsequent high wa- Received ter levels. Recent archaeological and paleoenvironmental investigations of this 15 January 2015 submerged landscape have documented stone structures that were likely uti- Revised lized for caribou hunting by these cultural groups during the late Lake Stanley 17 April 2016 lowstand phase of Lake Huron. In 2011 and 2012, a total of 67 core, sediment, Accepted and rock samples were collected in a 50 km2 area by divers and a ponar sam- 20 April 2016 pler deployed from a survey vessel. These samples were analyzed for sediment Scientific editing by Rolfe Mandel size, sorting, morphology and source, organic and carbonate content, testate amoebae, and organic materials. A series of indicators, including distinct mi- Published online in Wiley Online Library crofossil assemblages (such as species only found in sphagnum moss and boggy (wileyonlinelibrary.com). arctic ponds), rooted trees (tamarack and spruce), and charcoal (ca. 8–9000 yr old) reveal a series of microenvironments that are consistent with a subarctic doi 10.1002/gea.21590 climate. The analysis of the Alpena-Amberley Ridge provides a detailed pic- ture of the environment exploited by ancient peoples during the Lake Stanley lowstand period. -
Geomorphic and Sedimentological History of the Central Lake Agassiz Basin
Electronic Capture, 2008 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. Recommended citation: J.T. Teller, L.H. Thorleifson, G. Matile and W.C. Brisbin, 1996. Sedimentology, Geomorphology and History of the Central Lake Agassiz Basin Field Trip Guidebook B2; Geological Association of CanadalMineralogical Association of Canada Annual Meeting, Winnipeg, Manitoba, May 27-29, 1996. © 1996: This book, orportions ofit, may not be reproduced in any form without written permission ofthe Geological Association ofCanada, Winnipeg Section. Additional copies can be purchased from the Geological Association of Canada, Winnipeg Section. Details are given on the back cover. SEDIMENTOLOGY, GEOMORPHOLOGY, AND HISTORY OF THE CENTRAL LAKE AGASSIZ BASIN TABLE OF CONTENTS The Winnipeg Area 1 General Introduction to Lake Agassiz 4 DAY 1: Winnipeg to Delta Marsh Field Station 6 STOP 1: Delta Marsh Field Station. ...................... .. 10 DAY2: Delta Marsh Field Station to Brandon to Bruxelles, Return En Route to Next Stop 14 STOP 2: Campbell Beach Ridge at Arden 14 En Route to Next Stop 18 STOP 3: Distal Sediments of Assiniboine Fan-Delta 18 En Route to Next Stop 19 STOP 4: Flood Gravels at Head of Assiniboine Fan-Delta 24 En Route to Next Stop 24 STOP 5: Stott Buffalo Jump and Assiniboine Spillway - LUNCH 28 En Route to Next Stop 28 STOP 6: Spruce Woods 29 En Route to Next Stop 31 STOP 7: Bruxelles Glaciotectonic Cut 34 STOP 8: Pembina Spillway View 34 DAY 3: Delta Marsh Field Station to Latimer Gully to Winnipeg En Route to Next Stop 36 STOP 9: Distal Fan Sediment , 36 STOP 10: Valley Fill Sediments (Latimer Gully) 36 STOP 11: Deep Basin Landforms of Lake Agassiz 42 References Cited 49 Appendix "Review of Lake Agassiz history" (L.H. -
The Missoula Flood
THE MISSOULA FLOOD Dry Falls in Grand Coulee, Washington, was the largest waterfall in the world during the Missoula Flood. Height of falls is 385 ft [117 m]. Flood waters were actually about 260 ft deep [80 m] above the top of the falls, so a more appropriate name might be Dry Cataract. KEENAN LEE DEPARTMENT OF GEOLOGY AND GEOLOGICAL ENGINEERING COLORADO SCHOOL OF MINES GOLDEN COLORADO 80401 2009 The Missoula Flood 2 CONTENTS Page OVERVIEW 2 THE GLACIAL DAM 3 LAKE MISSOULA 5 THE DAM FAILURE 6 THE MISSOULA FLOOD ABOVE THE ICE DAM 6 Catastrophic Flood Features in Eddy Narrows 6 Catastrophic Flood Features in Perma Narrows 7 Catastrophic Flood Features at Camas Prairie 9 THE MISSOULA FLOOD BELOW THE ICE DAM 13 Rathdrum Prairie and Spokane 13 Cheny – Palouse Scablands 14 Grand Coulee 15 Wallula Gap and Columbia River Gorge 15 Portland to the Pacific Ocean 16 MULTIPLE MISSOULA FLOODS 17 AGE OF MISSOULA FLOODS 18 SOME REFERENCES 19 OVERVIEW About 15 000 years ago in latest Pleistocene time, glaciers from the Cordilleran ice sheet in Canada advanced southward and dammed two rivers, the Columbia River and one of its major tributaries, the Clark Fork River [Fig. 1]. One lobe of the ice sheet dammed the Columbia River, creating Lake Columbia and diverting the Columbia River into the Grand Coulee. Another lobe of the ice sheet advanced southward down the Purcell Trench to the present Lake Pend Oreille in Idaho and dammed the Clark Fork River. This created an enormous Lake Missoula, with a volume of water greater than that of Lake Erie and Lake Ontario combined [530 mi3 or 2200 km3]. -
Article in Press
ARTICLE IN PRESS Quaternary Science Reviews 24 (2005) 1533–1541 Correspondence$ Fresh arguments against the Shaw megaflood hypothesis. that the Lake Agassiz flood was the ‘‘largest in the last A reply to comments by David Sharpe on ‘‘Paleohy- 100,000 years’’ refers to a different publication (Clarke draulics of the last outburst flood from glacial Lake et al., 2003). We agree that, in terms of peak discharge, Agassiz and the 8200 BP cold event’’ both the Missoula floods (e.g., Clarke et al., 1984; O’Connor and Baker, 1992) and the Altay event (Baker et al., 1993) were indeed larger (roughly 17 Sv for Missoula and 418 Sv for Altay) but the released water 1. The megaflood hypothesis volume was a small fraction of that released from glacial Lake Agassiz (Table 1). Furthermore, the focus of We disagree with the premise underlying most of Clarke et al. (2003) was on abrupt climate change David Sharpe’s comments, namely that the Shaw triggered by freshwater injection to the North Atlantic subglacial megaflood hypothesis enjoys sufficient main- Ocean at 8200 BP: Freshwater volume rather than peak streamacceptance that we were negligent in failing to flood discharge is the relevant measure of flood cite it. Although the literature on Shavian megafloods magnitude for activation of this climate switch. Sharpe’s has grown over the past decade, it is less clear that the comment that ‘‘improved knowledge of additional flood ideas have gained ground. As a recent datum, Benn and terrains is important in assessing the impact of specific Evans (2005) assert that ‘‘most Quaternary scientists outburst floods on rapid climate change’’ seems to miss give little or no credence to the [Shaw] megaflood the point that flood intensity, which controls the interpretation, and it conflicts with an overwhelming geomorphic imprint, is only a second-order influence body of modern research on past and present ice sheet on the climate impact. -
8-Ton Rock Centerpiece of New Museum Exhibit
8-ton rock centerpiece of new museum exhibit • PERRY BACKUS [email protected] May 12, 2020 Ravalli County Museum Board member Dennis Moore helps Donaldson Brothers employees Vern Weidow and Mark Jessop set an 8-ton glacial rock into place on the museum grounds. By mid-June, the rock will become the centerpiece of a new permanent exhibit about Glacial Lake Missoula and its impact on the Bitterroot Valley. Ravalli County Museum Executive Director Tamar Stanley and museum board member Dennis Moore stand next to the newly delivered 8-ton boulder that will serve as the museum's new permanent exhibit that explains a portion of the natural history of the Bitterroot Valley. To fully understand the significance of Ravalli County Museum’s newest exhibit, visitors will need to come armed with imagination and a willingness to look skyward. The 8-ton rock that was carefully lowered into place on the museum’s lawn Monday is there to take them on a journey thousands of years back in time. The first thing they might do is look toward the towering Bitterroot Range just west of Hamilton. It was once home to the huge boulder that geologists call a glacial erratic. It found its way to the valley floor through the upheaval caused by glaciers more than 15,000 years ago. And then for thousands of years more, its home was the bottom of the massive Glacial Lake Missoula. To get an idea of the depth of the lake that would have covered Hamilton back then, visitors can lift their eyes to the top of the museum’s cupola and then imagine six of those buildings stacked upon each other. -
North Ridge Scenic Byway Geology
GUIDE TO THE NORTH RIDGE SCENIC BYWAY GEOLOGY LANDFORMS The North Ridge Scenic Byway corridor lies in the Erie Lake Plain landform of the Central Lowlands Physiographic Province of the United States (Fenneman 1938; Brockman 2002). The Lake Plain consists of wide expanses of level or nearly level land interrupted only by sandy ridges that are remnants of glacial-lake beaches and by river valleys carved into Paleozoic bedrock. With the exception of the sandy ridges, much of the Lake Plain in Avon and Sheffeld was a dense swamp forest prior to settlement. The North Ridge Scenic Byway follows the northernmost ancient beach ridge as it traverses Sheffeld and Avon at an elevation ranging from 675 to 690 feet above sea level, some 105 to 120 feet above modern Lake Erie. Topography of Sheffeld and Avon Townships as surveyed in 1901, showing North Ridge near the center of the map (courtesy of U.S. Geological Survey, Oberlin, Ohio Quadrangle 1903). 2 GEOLOGY FORMATION OF NORTH RIDGE Approximately 18,000 years ago, the last The chronology of lake stages in the Lake continental glacier blanketed northern Ohio as Erie basin relates a fascinating story of glacial it pushed down from the north to its maximum action, movements of the earth’s crust and southern thrust. The ice sheet reached as far erosion by waves to form the body of water south as Cincinnati, Ohio, then it began to we see today. The story begins nearly 15,000 melt back. As the glacier paused in its retreat, years ago as the last glacier [known as the piles of rock and clay debris [known as end Wisconsinan ice sheet] temporarily halted to moraines] were built up at the ice margins.