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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 -
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). -
Constraints on Lake Agassiz Discharge Through the Late-Glacial Champlain Sea (St
Quaternary Science Reviews xxx (2011) 1e10 Contents lists available at ScienceDirect Quaternary Science Reviews journal homepage: www.elsevier.com/locate/quascirev Constraints on Lake Agassiz discharge through the late-glacial Champlain Sea (St. Lawrence Lowlands, Canada) using salinity proxies and an estuarine circulation model Brandon Katz a, Raymond G. Najjar a,*, Thomas Cronin b, John Rayburn c, Michael E. Mann a a Department of Meteorology, 503 Walker Building, The Pennsylvania State University, University Park, PA 16802, USA b United States Geological Survey, 926A National Center, 12201 Sunrise Valley Drive, Reston, VA 20192, USA c Department of Geological Sciences, State University of New York at New Paltz, 1 Hawk Drive, New Paltz, NY 12561, USA article info abstract Article history: During the last deglaciation, abrupt freshwater discharge events from proglacial lakes in North America, Received 30 January 2011 such as glacial Lake Agassiz, are believed to have drained into the North Atlantic Ocean, causing large Received in revised form shifts in climate by weakening the formation of North Atlantic Deep Water and decreasing ocean heat 25 July 2011 transport to high northern latitudes. These discharges were caused by changes in lake drainage outlets, Accepted 5 August 2011 but the duration, magnitude and routing of discharge events, factors which govern the climatic response Available online xxx to freshwater forcing, are poorly known. Abrupt discharges, called floods, are typically assumed to last months to a year, whereas more gradual discharges, called routing events, occur over centuries. Here we Keywords: Champlain sea use estuarine modeling to evaluate freshwater discharge from Lake Agassiz and other North American Proglacial lakes proglacial lakes into the North Atlantic Ocean through the St. -
Welcome to the Walk of Change Nature Trail
Welcome to the Walk of Change 3. Monarch butterflies former land clearing for farming. The size of the 6. Is this The End? Monarch butterflies have one of the most stones may reveal whether the adjacent land was As you walked to this stop you may have noticed Nature Trail unusual and extreme life cycles of North used for crops or pasture. Stone piles or walls with a change in light and temperature. You just walked American butterflies. Adults migrate north, large rocks usually suggest the adjacent land was through a climax community. In this case, it is a Here at Knight Island State Park, the arriving in the northeast early in the growing a mowed field or a pasture in which only the large patch of mature forest. This does not mean the end landscape has been affected by many physical season. After mating, a female lays her eggs rocks needed to be removed. Small stones need to of change, though, or static condition in the forest. environmental and cultural factors over the on Common Milkweed, like you can see here. be removed from cultivated plots annually. This New growth slows as the forest canopy becomes geologic timescale. These include weather pile of small stones reveals that the surrounding enclosed with fewer, larger trees that are more extremes, glaciers, human habitation and area was used for crops. The crops grown on spaced out. At this state in a forest’s evolution, livestock grazing. Enjoy a walk along the Knight Island were beans, com and peas. change is brought by natural events such as storms trail system, and keep watch for signs of Common milkweed bringing wind and ice, or from cultural means like these changes; you might even witness some logging. -
The Late Quaternary Paleolimnology of Lake Ontario
Western University Scholarship@Western Electronic Thesis and Dissertation Repository 9-4-2014 12:00 AM The Late Quaternary Paleolimnology of Lake Ontario Ryan Hladyniuk The University of Western Ontario Supervisor Dr. Fred J. Longstaffe The University of Western Ontario Graduate Program in Geology A thesis submitted in partial fulfillment of the equirr ements for the degree in Doctor of Philosophy © Ryan Hladyniuk 2014 Follow this and additional works at: https://ir.lib.uwo.ca/etd Part of the Geochemistry Commons Recommended Citation Hladyniuk, Ryan, "The Late Quaternary Paleolimnology of Lake Ontario" (2014). Electronic Thesis and Dissertation Repository. 2401. https://ir.lib.uwo.ca/etd/2401 This Dissertation/Thesis is brought to you for free and open access by Scholarship@Western. It has been accepted for inclusion in Electronic Thesis and Dissertation Repository by an authorized administrator of Scholarship@Western. For more information, please contact [email protected]. THE LATE QUATERNARY PALEOLIMNOLOGY OF LAKE ONTARIO (Thesis format: Integrated Article) by Ryan Hladyniuk Graduate Program in Earth Sciences A thesis submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy The School of Graduate and Postdoctoral Studies The University of Western Ontario London, Ontario, Canada © Ryan Hladyniuk 2014 Abstract We examined the oxygen isotopic composition of biogenic carbonates, carbon and nitrogen abundances and isotopic compositions of bulk organic matter (OM), and the abundances and carbon isotopic compositions of individual n-alkanes (C17 to C35) for samples from three, 18 m long sediment cores from Lake Ontario in order to: (i) assess how changing environmental parameters affected the hydrologic history of Lake Ontario, and (ii) evaluate changes in organic productivity and sources since the last deglaciation. -
Oxygen-Isotope Variations in Post-Glacial Lake Ontario Ryan Hladyniuk the University of Western Ontario, [email protected]
Western University Scholarship@Western Earth Sciences Publications Earth Sciences Department 1-5-2016 Oxygen-isotope Variations in Post-glacial Lake Ontario Ryan Hladyniuk The University of Western Ontario, [email protected] Fred J. Longstaffe The University of Western Ontario, [email protected] Follow this and additional works at: https://ir.lib.uwo.ca/earthpub Part of the Earth Sciences Commons Citation of this paper: Hladyniuk, Ryan and Longstaffe, Fred J., "Oxygen-isotope Variations in Post-glacial Lake Ontario" (2016). Earth Sciences Publications. 4. https://ir.lib.uwo.ca/earthpub/4 1 1 Oxygen-isotope variations in post-glacial Lake Ontario 2 3 Ryan Hladyniuk1 and Fred J. Longstaffe1 4 5 1Department of Earth Sciences, The University of Western Ontario, London, Ontario, 6 Canada N6A5B7 7 8 Corresponding authors, [email protected] 1-519-619-3857; [email protected], 1-519-661- 9 3177 10 11 Keywords: Lake Ontario, oxygen isotopes, glacial meltwater, Laurentide Ice Sheet, late- 12 Quaternary climate change 13 14 15 16 17 18 19 20 21 22 2 23 Abstract 24 The role of glacial meltwater input to the Atlantic Ocean in triggering the Younger Dryas 25 (YD) cooling event has been the subject of controversy in recent literature. Lake Ontario 26 is ideally situated to test for possible meltwater passage from upstream glacial lakes and 27 the Laurentide Ice Sheet (LIS) to the Atlantic Ocean via the lower Great Lakes. Here, we 28 use the oxygen-isotope compositions of ostracode valves and clam shells from three Lake 29 Ontario sediment cores to identify glacial meltwater contributions to ancient Lake 30 Ontario since the retreat of the LIS (~16,500 cal [13,300 14C] BP). -
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. -
October 1980 Volume 1 the Geology of the Lake
OFPCE OF THE STATE GEOLOGIST VERMONT GEOLOGY OCTOBER 1980 VOLUME 1 THE GEOLOGY OF THE LAKE CHAMPLAIN BASIN AND VICINITY Proceedings of a Symposium CONTENTS Introduction to the environmental geology of Lake Champlain and shoreland areas R. Montgomery Fischer 1 The application of Lake Champlain water level studies to the investigation of Adirondack and Lake Champlain crustal movements Stockton G. Barnett Yngvar W. Isachsen 5 The stratigraphy of unconsolidated sediments of Lake Champlain Allen S. Hunt 12 Alkalic dikes of the Lake Champlain Valley J. Gregory McHone E. Stanley Corneille 16 Mesozoic faults and their environmental significance in western Vermont Rolfe S. Stanley 22 Estimating recharge to bedrock ground- water in a small watershed in the Lake Champlain drainage basin Craig D. Heindel 33 EDITOR Jeanne C. Detenbeck EDI TORIAL COMMI TTEE Charles A. Ratte' Frederick D. Larsen VERMONT GEOLOGICAL SOCIETY, INC. Vermont Geological Society Box 304 Montpelier, Vermont 05602 FOR WA RD The Vermont Geological- Society was founded in 1974 for the purpose of C1) advancing the science and profession of geology and its related branches by encouraging education, research and service through the holding of meetings, maintaining communications, and providing a common union of its members; 2) contributing to the public education of the geology of Vermont and prcsnoting the proper use and protection of its natural resources; and 3) advancing the professional conduct of those engaged in the collection, interpretation and use of geologic d a t aC. To these ends, in its 7 year history, the society has prcnnoted a variety of field trips, an exposition on Vermont geology, , presentations of papers by both professional and student researchers, teachers workshops, a seminar on water quality, a soils workshop and a seismic workshop. -
Lake Champlain Voyages of Discovery: Bringing History Home
“The Congress fi nds and declares that the spirit and direction of the Nation are founded upon and refl ected in its historic heritage; [and that] the historical and cultural foundations of the Nation should be preserved as a living part of our community life and development in order to give a sense of orientation to the American people…..” National Historic Preservation Act of 1966. Front cover photograph: South Lake Champlain Bridge, Chimney Point State Historic Site, Addison to right. Credit: William J. Costello, WILLCIMAGES. Back cover photographs credit: Eric A. Bessett e, Shadows & Light Design. Cover design: Eric A. Bessett e, Shadows & Light Design. Content Design and Layout: Rosemary A. Cyr, Hutch M. McPheters, Ellen R. Cowie. Lake Champlain Voyages of Discovery: Bringing History Home By: Giovanna M. Peebles, State Archeologist, Vermont Division for Historic Preservation Elsa Gilbertson, Regional Historic Site Administrator, Vermont Division for Historic Preservation Rosemary A. Cyr, Laboratory Director, Archaeology Research Center, University of Maine at Farmington Stephen R. Scharoun, Historian and Field Director, Archaeology Research Center, University of Maine at Farmington Ellen R. Cowie, Director, Archaeology Research Center, University of Maine at Farmington Robert N. Bartone, Assistant Director, Archaeology Research Center, University of Maine at Farmington With Contributions By: Joseph-André Senécal, Professor of Romance Languages, University of Vermont Paul Huey, New York State Offi ce of Parks, Recreation and Historic -
History of Glacial Lakes in the Dog River Valley, Central Vermont
University of New Hampshire University of New Hampshire Scholars' Repository New England Intercollegiate Geological NEIGC Trips Excursion Collection 1-1-1987 History of Glacial Lakes in the Dog River Valley, Central Vermont Larsen, Frederick D. Follow this and additional works at: https://scholars.unh.edu/neigc_trips Recommended Citation Larsen, Frederick D., "History of Glacial Lakes in the Dog River Valley, Central Vermont" (1987). NEIGC Trips. 417. https://scholars.unh.edu/neigc_trips/417 This Text is brought to you for free and open access by the New England Intercollegiate Geological Excursion Collection at University of New Hampshire Scholars' Repository. It has been accepted for inclusion in NEIGC Trips by an authorized administrator of University of New Hampshire Scholars' Repository. For more information, please contact [email protected]. B-4 Waterbury Montpelier Barre Winooski River Williamstown basin Roxbury drainage divide White River Granville basin Notch Randolph • Figure 1. Stream drainage patterns in central Vermont 213 HISTORY OF GLACIAL LAKES IN THE DOG RIVER VALLEY, CENTRAL VERMONT by Frederick D. Larsen Department of Earth Science Norwich University N o rth field , Vermont 05663 INTRODUCTION The area traversed on this field trip lies on the Montpeli er, Barre West, Northfield, and Roxbury 7.5-minute U.S. Geologi cal Survey topographic maps in central Vermont. The terrain is underlain by metamorphosed eugeosynclinal rocks that are part of a complex zone of imbricate slices bounded by thrust faults. The age of rocks west of the Dog River is Cambrian and Ordovici an. To the east the age of the rocks is under debate, but they are in the range of Ordovician to Devonian.