IOWA GEOLOGICAL SURVEY Annual Report 1966
IOWA GEOLOGICAL SURVEYAnnual Report 1966
IOWA GEOLOGICAL SURVEYThe duty of the Geological Survey is to collect, interpret, and reportinformation on basic geologic features and products of the state. This fncludesinformation concerning the quality and quantity of surface and underground watersupplies, coal, gypsum, sand and gravel, ceramic clay and shale {chiefly for brickand tile), limestone and dolomite, row materials for the manufacture of cement,ore deposits, and other mineral resources. Continuous studies are being carried onin an effort to discover areas of possible oil and gas entrapment in Iowa. Geologicalstudies of dam sites are made on some of the flood control and recreational projectsof federal, state and county agencies and reports on the mineral resources of theproposed reservoir areas are commonly prepared.The Geological Survey is the repository for all basic geologic data obtainedin the state. As of January 1, 1967, there were more than 19, 000 sets of we 11 cutting samples and cores in the Survey's sample library. These samples, from wells inall counties in the state represent millions of feet of drilling. They, and the systematic measurements that accompany them, along with similar information gained fromnaturally exposed rocks at the surface, form the foundation of the geologic andground-water studies in the state. These data ore now being prepared for computeruse on cards and tapes.Collection and dissemination of data on water wells, water levels, streamflow and sediment loads, lake levels, and other hydrologic data are accomplishedin cooperation with the Water Resources Division of the U.S. Geological Survey.The statewide basic data network consists of stream-flow measurements of 124 streamsand water-level measurements of 11 lakes, ground-water level measurements of
-2124 wells, and suspended sediment measurements of 11 selected streams. Theseare continuous records or regularly spaced measurements that ore mode os a partof the nationwide network.The Geological Survey is responsible for topographic mapping of the stateand this is being done by 7-1/2 minute quadrangles (approximately 55 square miles)and 15-minute quadrangles (approximately 220 square miles) in cooperation withTopographic Division of the U.S. Geological Survey. During 1966 fifty-five new7-1/2 minute quadrangles were published. A new base mop of the state was alsopublished during 1966.Since 1949 the State Geologist by appointment hos been o member of theIowa Natural Resources Council and during that time, by election, has served asChairman of the Resources Council. The State Geologist also acts as the Oil andGas Administrator with duties and responsibilities contained in Chapter 84, Codeof Iowa 1962.As a part of the result of its work, the Survey hos published 38 volumesof annual reports and accompanying scientific papers. These publications includespecial reports and maps covering the geology and mineral resources of all butsix of the 99 counties, as well as special reports on mineral production. There arealso four technical papers on Iowa cool, eight water-supply bulletins, and onewater atlas. During 1966 the second paper of a new series of pub Iications entitled11Report of Investigations" was released. Geological and mineral resources mapsof the state have been printed. Cther summaries of specialized geological studieshove been published in geological periodicals. These published reports, togetherwith the large file of unpublished data obtained during almost three-quarters of a
-3century of continuous study, serve os a reliable unbiased basis for up-to-the-minutereports to federal, state, and municipal agencies and to private concerns and individualswho request and need the available information on the geology, water supply, and othermineral resources of Iowa. Information, advi::e, and direct assistance in the increasingdevelopment of large water supplies are freely given to the limit of funds and personnel.'The Survey is ever alert to and working toward the finding of new mineral and groundwater resources and the economic utilization of geological features in the state. Thegeophysical surveys to be discussed later, and the underground gos-storage projects atRedfield, Keota, Cairo, Vincent, West Branch, Iowa City, and Des Moines are a partof this phase of the work. With the additional collection and refinement of basic data,the possibilities of new discoveries are enhanced.In recent years the Survey hos become involved in the area of education. Manyof the staff have been invited to talk to science classes, Scouts, rock and mineral societies, service clubs, extension and conservation groups. Rock sample sets and mimeographed resumls of various aspects of Geological Survey work serve to tell the story ofGeology in Iowa in reply to requests from interested teachers, students and rock, mineral,and fossil collectors in Iowa and other states.In addition to the day-to-day collection, interpretation, and reporting on theroutine program outlined in the foregoing paragraphs, the Survey has always had specialprojects in execution. These, like the continuing program, are elastic, dependingupon the need and demand, funds at hand, and the availability of specifically trainedpersonnel. At present the following projects are in progress:Aeromagnetic Survey: This project covers about 8, 100 square miles in northeasternIowa. The flying was completed in the summer of 1966. Geologic maps of the basement
-4roc ks, mognetic maps, and other i llustrotions are being prepared to accompany the preliminary text. The flying was completed in the summer of 1966, and the report will beready for release in early 1967.This report will complement similar work already done in northcentrol, central,southwestern and northwestem Iowa fot which preliminary reports are now available(see attached mop).Some iron-bearing rock hos already been found, but the titanium content wosconsidered to be too high for use with present-day technologies.Preparation of New Geologic Map of Iowa: This colored mop will show theconsolidated rock that occurs at the surface or immediately beneath the glacial driftand alluvium. The earlier Geologic Mop of Iowa, published in 1937, is not only badlyoutdated, but is completely out of print. The new mop is in the final stage of prepare tion before transmittal to the printer.Preparation of a Glacial Map of Iowa: Although the glacial deposits of Iowaare intemationally known, a detailed state map of these deposits has never been published. There hove been many requests for such a map. Target date for printing is thefall of 1967.Ground Geophysical Work: Detailed magnetometer and gravimeter studies inWashington, Keokuk, Iowa ond Johnson Counties ore being conducted in an attempt tocorrelate the occurrences of oil in the Keota dome with other subsurface structural featuresand the relationships of magnetic and gravity anomalies to less precisely known subsurface Paleozoic structures. It is hoped that this will aid in locating other oil traps.Fossils and Rocks: A short generalized discussion is being prepared on the fossilsand rock strata in eastern Iowa for distribution to the ever-expanding group of loymeninterested in geology.
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-sReports in Preparation: At the close of 1966 two reports were nearing the finalstages of preparation. The first of these will be entitled "Preliminary Report On Basement Complex Rocks of Iowa" end wfll include a petrologic description of the crystallinerocks encountered in drilling in Iowa. The second report will be entitled "LaPorte CityChert" and will formally recognize o rock unit that is known only from the subsurfacein Iowa. Both of these reports will be published in earfy 1967.The following projects ore being carried on in cooperation with the U. S. Geological Survey:Occurrence of Water in Glacial Deposits of South-Central Iowa: This is acontinuous drilling program to locate water-bearing sands and gravels in the glacialdeposits in an 8-county area of Iowa that is chronically short of water.The first of several reports is scheduled for publication in early 1967. Fourothers will be published in late 1967 or early 1968.Water Atlas of Southeastem Iowa: This report will depict the utilization andavailability of woter for an 11-county area in south eastem Iowa. The report is "scheduled for completion in early 1968.Cretaceous Aquifer Approi sol: The purpose of this project is to bring togetheron several maps ell available information on quantity, quality, and use of water inthe Cretaceous aquifer of western Iowa. These maps will form the grounckYater basisfor comprehensive water planning in Western Iowa.Mississippian Aquifer Appraisal: The report will show the character and distribution of rocks of Mistissippian age within the state in addition to the quantity, qualityand utilization of the water contained in them. Publication is anticipated in 1967.
-6Geology and Ground-Water Resources of Linn County:Geology and Ground-Water Resources of Cerro Gordo County:These reports will present in detail all that is presently known about the geologyand ground-water re 0Urces of thesetwo counties, including the moi r cities of MasonCity and Cedar Rapids. Both reports are completed and are undergoing review withpublication anticipated in 1967.Muscatine Island Project: This current project, which is in cooperation withthe City of Muscatine, will be a comprehensive appraisal (quality and quantity) of theground water available in an area that is heavily pumped at present and hos considerablefuturedevelopment potential.An electric analog model of the project area wos constructed and presently isbeing analyzed. The model analysis will be incorporated in the final report on theproject, which will be published in late 1967.Automatic Data Processing: The objective of this project is the rapid retrievalof geologic and hydro logic data by use of a high-speed computer. Accomplishments todate include the coding and key-punching of data that covers about one-third of the state,and the writing of several operational programs for computer processing of the data.All geologic data in the state is expected to be processed and key-punched during the1968-69 biennium so that statewide data retrieval for project work and comprehensivebasin planning will be operational.
APPENDIX 1
''The following proiects on stream flow in Iowa ore being conducted by the U. s.Geological Survey in cooperation with the Iowa Highway Research Board, the lowcNatural Resources Council, and others:Flood Profiles: Flood profiles have been obtained and tied to mean sea levelfor mcny hundreds of miles, principally on major river basins. Interim open-file reportshove been prepared for the Iowa and lower Des Moines River basins. The Cedar Riverbasin flood profile report was published in 1963 by the Iowa Highway Research Boord.A report on Little Sioux River is in Washington for review. A report on Rock River floodsis in the final stages of preparation in the District office, Iowa City.Low-flow Characteristics of Iowa Streams: The initial pro;ect was completedand the results published in 1958 by the Iowa Natural Resources Council in Bulletin No. 9.This study is currently being updated with field completion of the report scheduled forJuly, 1968.Low-flow Partial-record Stations: In order to supplement the low-flow information collected in the regular gaging-station program, more than 400 low-flow partialrecord stations on the small drainage areas were established and measurements made atthese sites correlated with the baseflow recordi at the regular gaging stations. Specialrequests for information have been and ore continuing to be answered with these data.A special report was prepared on low-flow characteristics of English River, Old Mon'sCreek and Clear Creek and was released by the U. S. Geological Survey as on open-filereport in October, 1964. Open-file report "Summer basin-flow recession curves forIowa streams" was completed and distributed in July, 1966.Flood-profile and Flood-frequency Studies for Cedar Rapids, Linn County, andIowa City: These projects consist of the collection and analysis of flood profiles andflood-frequency data on Indian, Otter, and Prairie Creeks in Cedar Rapids and Linn
County, and Ralston Creek in Iowa City for use in floodplain planning studies. Theseprojects ore conducted in cooperation with Linn County and the cities of Cedar Rapidsand Iowa City.Flood Information at Selected Bridge Sites in Iowa: Establishment of about 70additional crest-stage gages on small basins in Iowa was accomplished by June, 1966.The sites were selected to provide good areal sampling. The information obtained willprovide a better understanding of the flood hydrology of small basins and data usefulfor the design of structures on small waterways.The 1965 Flood in the Upper Mississippi River Basin: A comprehensive reporton the 1965 flood, covering the entire upper Mississippi Basin, is in review in Washington prior to publication as a U. S. Geological Survey Water-Supply Paper.Water Surface Profile, Raccoon River at Des Moines: An open-file report onflood profiles for Raccoon River at Des Moines was distributed in December, 1966.Time of Travel Studies on the Missouri River: Two time-of-travel studies usingRhodomin BA dye as a trccer, in cooperation with a number of state and federal agencies,were conducted on the Missouri River between Yankton, South Dakota, and the mouth.The data have been analyzed with respect to the time of travel and discharge withinsevere I reaches of the river. A report is in preparation.State cooperators in this project were the Iowa Geological Survey, NaturalResources Council, State Deportment of Public Health, State Conservation Commission,and the Water Deportment, City of Council Bluffs.
11 Report of Investigations" was released. Geological and mineral resources maps of the state have been printed. Cther summaries of specialized geological studies hove been published in geological periodicals. These published reports, together with the large file of unpublished data obtained during almost three-quarters of a
Iowa Chapter, American Academy of Pediatrics Iowa Dental Association Iowa Department of Public Health Iowa Health Care Association Iowa Hospital Association Iowa Medical Society Iowa Nurses Association Iowa Pharmacy Association Iowa Veterinary Medical Association Iowa‘s Statewide Epidemiology Education and Consultation Program State Hygienic .
AER/AGS Special Report 101 (October 2015) 1 Introduction K.E. Maccormack1, L.H.Thorleifson2, R.C. Berg3, and H.A.J. Russell4 1 Alberta Geological Survey 2 Minnesota Geological Survey 3 Illinois State Geological Survey 4 Geological Survey of Canada Abstract The objective of this year’s 3D workshop is to
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