Introduction to Geological Process in Illinois Glacial
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Wisconsinan and Sangamonian Type Sections of Central Illinois
557 IL6gu Buidebook 21 COPY no. 21 OFFICE Wisconsinan and Sangamonian type sections of central Illinois E. Donald McKay Ninth Biennial Meeting, American Quaternary Association University of Illinois at Urbana-Champaign, May 31 -June 6, 1986 Sponsored by the Illinois State Geological and Water Surveys, the Illinois State Museum, and the University of Illinois Departments of Geology, Geography, and Anthropology Wisconsinan and Sangamonian type sections of central Illinois Leaders E. Donald McKay Illinois State Geological Survey, Champaign, Illinois Alan D. Ham Dickson Mounds Museum, Lewistown, Illinois Contributors Leon R. Follmer Illinois State Geological Survey, Champaign, Illinois Francis F. King James E. King Illinois State Museum, Springfield, Illinois Alan V. Morgan Anne Morgan University of Waterloo, Waterloo, Ontario, Canada American Quaternary Association Ninth Biennial Meeting, May 31 -June 6, 1986 Urbana-Champaign, Illinois ISGS Guidebook 21 Reprinted 1990 ILLINOIS STATE GEOLOGICAL SURVEY Morris W Leighton, Chief 615 East Peabody Drive Champaign, Illinois 61820 Digitized by the Internet Archive in 2012 with funding from University of Illinois Urbana-Champaign http://archive.org/details/wisconsinansanga21mcka Contents Introduction 1 Stopl The Farm Creek Section: A Notable Pleistocene Section 7 E. Donald McKay and Leon R. Follmer Stop 2 The Dickson Mounds Museum 25 Alan D. Ham Stop 3 Athens Quarry Sections: Type Locality of the Sangamon Soil 27 Leon R. Follmer, E. Donald McKay, James E. King and Francis B. King References 41 Appendix 1. Comparison of the Complete Soil Profile and a Weathering Profile 45 in a Rock (from Follmer, 1984) Appendix 2. A Preliminary Note on Fossil Insect Faunas from Central Illinois 46 Alan V. -
University Microfilms, Inc., Ann Arbor, Michigan GEOLOGY of the SCOTT GLACIER and WISCONSIN RANGE AREAS, CENTRAL TRANSANTARCTIC MOUNTAINS, ANTARCTICA
This dissertation has been /»OOAOO m icrofilm ed exactly as received MINSHEW, Jr., Velon Haywood, 1939- GEOLOGY OF THE SCOTT GLACIER AND WISCONSIN RANGE AREAS, CENTRAL TRANSANTARCTIC MOUNTAINS, ANTARCTICA. The Ohio State University, Ph.D., 1967 Geology University Microfilms, Inc., Ann Arbor, Michigan GEOLOGY OF THE SCOTT GLACIER AND WISCONSIN RANGE AREAS, CENTRAL TRANSANTARCTIC MOUNTAINS, ANTARCTICA DISSERTATION Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of The Ohio State University by Velon Haywood Minshew, Jr. B.S., M.S, The Ohio State University 1967 Approved by -Adviser Department of Geology ACKNOWLEDGMENTS This report covers two field seasons in the central Trans- antarctic Mountains, During this time, the Mt, Weaver field party consisted of: George Doumani, leader and paleontologist; Larry Lackey, field assistant; Courtney Skinner, field assistant. The Wisconsin Range party was composed of: Gunter Faure, leader and geochronologist; John Mercer, glacial geologist; John Murtaugh, igneous petrclogist; James Teller, field assistant; Courtney Skinner, field assistant; Harry Gair, visiting strati- grapher. The author served as a stratigrapher with both expedi tions . Various members of the staff of the Department of Geology, The Ohio State University, as well as some specialists from the outside were consulted in the laboratory studies for the pre paration of this report. Dr. George E. Moore supervised the petrographic work and critically reviewed the manuscript. Dr. J. M. Schopf examined the coal and plant fossils, and provided information concerning their age and environmental significance. Drs. Richard P. Goldthwait and Colin B. B. Bull spent time with the author discussing the late Paleozoic glacial deposits, and reviewed portions of the manuscript. -
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 -
Indiana Glaciers.PM6
How the Ice Age Shaped Indiana Jerry Wilson Published by Wilstar Media, www.wilstar.com Indianapolis, Indiana 1 Previiously published as The Topography of Indiana: Ice Age Legacy, © 1988 by Jerry Wilson. Second Edition Copyright © 2008 by Jerry Wilson ALL RIGHTS RESERVED 2 For Aaron and Shana and In Memory of Donna 3 Introduction During the time that I have been a science teacher I have tried to enlist in my students the desire to understand and the ability to reason. Logical reasoning is the surest way to overcome the unknown. The best aid to reasoning effectively is having the knowledge and an understanding of the things that have previ- ously been determined or discovered by others. Having an understanding of the reasons things are the way they are and how they got that way can help an individual to utilize his or her resources more effectively. I want my students to realize that changes that have taken place on the earth in the past have had an effect on them. Why are some towns in Indiana subject to flooding, whereas others are not? Why are cemeteries built on old beach fronts in Northwest Indiana? Why would it be easier to dig a basement in Valparaiso than in Bloomington? These things are a direct result of the glaciers that advanced southward over Indiana during the last Ice Age. The history of the land upon which we live is fascinating. Why are there large granite boulders nested in some of the fields of northern Indiana since Indiana has no granite bedrock? They are known as glacial erratics, or dropstones, and were formed in Canada or the upper Midwest hundreds of millions of years ago. -
Quarrernary GEOLOGY of MINNESOTA and PARTS of ADJACENT STATES
UNITED STATES DEPARTMENT OF THE INTERIOR Ray Lyman ,Wilbur, Secretary GEOLOGICAL SURVEY W. C. Mendenhall, Director P~ofessional Paper 161 . QUArrERNARY GEOLOGY OF MINNESOTA AND PARTS OF ADJACENT STATES BY FRANK LEVERETT WITH CONTRIBUTIONS BY FREDERICK w. SARDE;30N Investigations made in cooperation with the MINNESOTA GEOLOGICAL SURVEY UNITED STATES GOVERNMENT PRINTING OFFICE WASHINGTON: 1932 ·For sale by the Superintendent of Documents, Washington, D. C. CONTENTS Page Page Abstract ________________________________________ _ 1 Wisconsin red drift-Continued. Introduction _____________________________________ _ 1 Weak moraines, etc.-Continued. Scope of field work ____________________________ _ 1 Beroun moraine _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 47 Earlier reports ________________________________ _ .2 Location__________ _ __ ____ _ _ __ ___ ______ 47 Glacial gathering grounds and ice lobes _________ _ 3 Topography___________________________ 47 Outline of the Pleistocene series of glacial deposits_ 3 Constitution of the drift in relation to rock The oldest or Nebraskan drift ______________ _ 5 outcrops____________________________ 48 Aftonian soil and Nebraskan gumbotiL ______ _ 5 Striae _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 48 Kansan drift _____________________________ _ 5 Ground moraine inside of Beroun moraine_ 48 Yarmouth beds and Kansan gumbotiL ______ _ 5 Mille Lacs morainic system_____________________ 48 Pre-Illinoian loess (Loveland loess) __________ _ 6 Location__________________________________ -
Trip F the PINNACLE HILLS and the MENDON KAME AREA: CONTRASTING MORAINAL DEPOSITS by Robert A
F-1 Trip F THE PINNACLE HILLS AND THE MENDON KAME AREA: CONTRASTING MORAINAL DEPOSITS by Robert A. Sanders Department of Geosciences Monroe Community College INTRODUCTION The Pinnacle Hills, fortunately, were voluminously described with many excellent photographs by Fairchild, (1923). In 1973 the Range still stands as a conspicuous east-west ridge extending from the town of Brighton, at about Hillside Avenue, four miles to the Genesee River at the University of Rochester campus, referred to as Oak Hill. But, for over thirty years the Range was butchered for sand and gravel, which was both a crime and blessing from the geological point of view (plates I-VI). First, it destroyed the original land form shapes which were subsequently covered with man-made structures drawing the shade on its original beauty. Secondly, it allowed study of its structure by a man with a brilliantly analytical mind, Herman L. Fair child. It is an excellent example of morainal deposition at an ice front in a state of dynamic equilibrium, except for minor fluctuations. The Mendon Kame area on the other hand, represents the result of a block of stagnant ice, probably detached and draped over drumlins and drumloidal hills, melting away with tunnels, crevasses, and per foration deposits spilling or squirting their included debris over a more or less square area leaving topographically high kames and esker F-2 segments with many kettles and a large central area of impounded drainage. There appears to be several wave-cut levels at around the + 700 1 Lake Dana level, (Fairchild, 1923). The author in no way pretends to be a Pleistocene expert, but an attempt is made to give a few possible interpretations of the many diverse forms found in the Mendon Kames area. -
4. Results & Analysis
T h e M i d d l e s e x N a t u r a l H e r i t a g e S t u d y on the nature of the soil overlaying the relatively 4. Results & Analysis impermeable clay layer. In general, flat homogeneous areas have experienced the greatest loss of woodlands due to their high agricultural value. This chapter provides a general summary of County trends Kame Moraines, Peat and Muck, Beveled Till Plains and based on the MNHS and LSWS field surveys and on spatial Beaches or Shore Cliffs are uncommon physiographic types analysis of the woodland patches in Middlesex County. in Middlesex, yet a relatively large proportion of these areas are covered in woodlands (Table 4). Peat and Muck soils, which occur on valley bottoms, are too saturated to farm unless drained and are generally used for cash crops. 4.1 WOODLAND PHYSIOGRAPHY Remnant wetlands tend to be irregularly shaped and account for a high proportion of the area in these bottom lands. Table 4 is a comparison between the area of physiographic Woodlands in riparian landscapes tend to be long and types in Middlesex County and the area covered by continuous, but irregularly shaped. The strong relief of woodlands for each physiographic type. Although Kame Moraines, Shore Cliffs and Beveled Till Plains are Undrumlinized Till Plains, Till Moraines and Clay Plains not easy to farm and therefore more of these areas are are common physiographic types in Middlesex County wooded. Sandy soils found in Sand Plains, Spillways and (Table 4), only a relatively small proportion of these areas Kame Moraines are dominated by relatively large forest are covered in woodlands. -
Erosional and Depositional Study Guide
Erosional and Depositional Study Guide Erosional 32. (2pts) Name the two ways glaciers erode the bed. 33. (6pts) Explain abrasion. Use the equation for abrasion to frame your answer. 34. (3pts) Contrast the hardness of ice compared to the hardness of bedrock. What is doing the abrading and why? 35. (3pts) Contrast the normal stress (weight of the ice) on the rock tool in the ice compared to the contact pressure. Are they the same, different? Why? 36. (3pts) The tools in the ice abrade along with the bedrock so the tools must be replenished for the glacier to erode over its entire base. What is the source of the tools? Explain. 37. (3pts) What is the role of subglacial hydrology in abrasion? Explain. 38. (3pts) Although we did not explicitly discuss this in class, consider abrasion and bulk erosion in a deforming subglacial till. Explain what might be happening. 39. (2 pts) Name the two ways plucking occurs. 40. (5pts) Explain how plucking occurs at a step in the bedrock. 41. (3pts) What is a roche mountonee and how does it form? 42. (3pts) Name 3 erosional landscapes created by glaciers. Do not include roche mountonee and U-shaped valley. 43. (6pts) How does a U-shaped valley form? Be specific. Depositional 44. (3pts) How does a glacier transport rock debris? 45. (3pts) Where do you find lateral moraines on a glacier and what glacial processes determine their location? Draw a plan view diagram of a glacier, identify its relevant parts and the locations of lateral moraines. 46. (3pts) In class we discussed how the vertical extent of moraines is not correlated with glacier size. -
Glacial Processes and Landforms
Glacial Processes and Landforms I. INTRODUCTION A. Definitions 1. Glacier- a thick mass of flowing/moving ice a. glaciers originate on land from the compaction and recrystallization of snow, thus are generated in areas favored by a climate in which seasonal snow accumulation is greater than seasonal melting (1) polar regions (2) high altitude/mountainous regions 2. Snowfield- a region that displays a net annual accumulation of snow a. snowline- imaginary line defining the limits of snow accumulation in a snowfield. (1) above which continuous, positive snow cover 3. Water balance- in general the hydrologic cycle involves water evaporated from sea, carried to land, precipitation, water carried back to sea via rivers and underground a. water becomes locked up or frozen in glaciers, thus temporarily removed from the hydrologic cycle (1) thus in times of great accumulation of glacial ice, sea level would tend to be lower than in times of no glacial ice. II. FORMATION OF GLACIAL ICE A. Process: Formation of glacial ice: snow crystallizes from atmospheric moisture, accumulates on surface of earth. As snow is accumulated, snow crystals become compacted > in density, with air forced out of pack. 1. Snow accumulates seasonally: delicate frozen crystal structure a. Low density: ~0.1 gm/cu. cm b. Transformation: snow compaction, pressure solution of flakes, percolation of meltwater c. Freezing and recrystallization > density 2. Firn- compacted snow with D = 0.5D water a. With further compaction, D >, firn ---------ice. b. Crystal fabrics oriented and aligned under weight of compaction 3. Ice: compacted firn with density approaching 1 gm/cu. cm a. -
Routing of Meltwater from the Laurentide Ice Sheet During The
LETTERS TO NATURE very high sulphate concentrations (Fig. 1). Thus, differences in P release has yet to prove the mechanism behind this relation P cycling between fresh waters and salt waters may also influence ship. If sediment P release were controlled largely by sulphur, the switch in nutrient limitation. our view of the lakes that are being affected by atmospheric A further implication of our findings is a possible effect of S pollution could be altered. It is believed generally that anthropogenic S pollution on P cycling in lakes. Our data lakes with well-buffered watersheds are insensitive to the effects indicate that aquatic systems with low sulphate concentrations of atmospheric S pollution. However, because changing have low RPR under either oxic or anoxic conditions; systems atmospheric S inputs can alter the sulfate concentration in with only slightly elevated sulphate concentrations have sig surface waters22 independent of acid neutralization in the water nificantly elevated RPR, particularly under anoxic conditions shed, the P cycle of even so-called 'insensitive' lakes may be (Fig. 1). Work on the relationship between sulphate loading and affected. D Received 22 February; accepted 15 August 1987. 17. Nurnberg. G. Can. 1 Fish. aquat. Sci. 43, 574-560 (1985). 18. Curtis, P. J. Nature 337, 156-156 (1989). 1. Bostrom, B .. Jansson. M. & Forsberg, G. Arch. Hydrobiol. Beih. Ergebn. Limno/. 18, 5-59 (1982). 19. Carignan, R. & Tessier, A. Geochim. cosmochim. Acta 52, 1179-1188 (1988). 2. Mortimer. C. H. 1 Ecol. 29, 280-329 (1941). 20. Howarth, R. W. & Cole, J. J. Science 229, 653-655 (1985). -
Glaciers and Glaciation
M18_TARB6927_09_SE_C18.QXD 1/16/07 4:41 PM Page 482 M18_TARB6927_09_SE_C18.QXD 1/16/07 4:41 PM Page 483 Glaciers and Glaciation CHAPTER 18 A small boat nears the seaward margin of an Antarctic glacier. (Photo by Sergio Pitamitz/ CORBIS) 483 M18_TARB6927_09_SE_C18.QXD 1/16/07 4:41 PM Page 484 limate has a strong influence on the nature and intensity of Earth’s external processes. This fact is dramatically illustrated in this chapter because the C existence and extent of glaciers is largely controlled by Earth’s changing climate. Like the running water and groundwater that were the focus of the preceding two chap- ters, glaciers represent a significant erosional process. These moving masses of ice are re- sponsible for creating many unique landforms and are part of an important link in the rock cycle in which the products of weathering are transported and deposited as sediment. Today glaciers cover nearly 10 percent of Earth’s land surface; however, in the recent ge- ologic past, ice sheets were three times more extensive, covering vast areas with ice thou- sands of meters thick. Many regions still bear the mark of these glaciers (Figure 18.1). The basic character of such diverse places as the Alps, Cape Cod, and Yosemite Valley was fashioned by now vanished masses of glacial ice. Moreover, Long Island, the Great Lakes, and the fiords of Norway and Alaska all owe their existence to glaciers. Glaciers, of course, are not just a phenomenon of the geologic past. As you will see, they are still sculpting and depositing debris in many regions today. -
Climate Modeling in Las Leñas, Central Andes of Argentina
Glacier - climate modeling in Las Leñas, Central Andes of Argentina Master’s Thesis Faculty of Science University of Bern presented by Philippe Wäger 2009 Supervisor: Prof. Dr. Heinz Veit Institute of Geography and Oeschger Centre for Climate Change Research Advisor: Dr. Christoph Kull Institute of Geography and Organ consultatif sur les changements climatiques OcCC Abstract Studies investigating late Pleistocene glaciations in the Chilean Lake District (~40-43°S) and in Patagonia have been carried out for several decades and have led to a well established glacial chronology. Knowledge about the timing of late Pleistocene glaciations in the arid Central Andes (~15-30°S) and the mechanisms triggering them has also strongly increased in the past years, although it still remains limited compared to regions in the Northern Hemisphere. The Southern Central Andes between 31-40°S are only poorly investigated so far, which is mainly due to the remoteness of the formerly glaciated valleys and poor age control. The present study is located in Las Leñas at 35°S, where late Pleistocene glaciation has left impressive and quite well preserved moraines. A glacier-climate model (Kull 1999) was applied to investigate the climate conditions that have triggered this local last glacial maximum (LLGM) advance. The model used was originally built to investigate glacio-climatological conditions in a summer precipitation regime, and all previous studies working with it were located in the arid Central Andes between ~17- 30°S. Regarding the methodology applied, the present study has established the southernmost study site so far, and the first lying in midlatitudes with dominant and regular winter precipitation from the Westerlies.