DOCSLIB.ORG

Progress Report

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Progress Report Final Scientific/Technical Report: DE-FC26-04NT15513 Summary of Research through Phase II/Year 2 of initially approved 3 Phase/3 Year Project – Establishing the Relationship between Fracture- Related Dolomite and Primary Rock Fabric on the Distribution of Reservoirs in the Michigan Basin DOE Award Number: DE-FC26-04NT15513 Reporting Period Start: October 1, 2004 Reporting Period End: September 30, 2007 Principal Author and Project Manager: G. Michael Grammer, Ph.D. Associate Professor Department of Geosciences Western Michigan University 1903 W. Michigan Ave. Kalamazoo, MI 49008-5241 Final Report Issued: December 21, 2007 1 DISCLAIMER “This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof”. 2 ABSTRACT This final scientific/technical report covers the first 2 years (Phases I and II of an originally planned 3 Year/3 Phase program). The project was focused on evaluating the relationship between fracture-related dolomite and dolomite constrained by primary rock fabric in the 3 most prolific reservoir intervals in the Michigan Basin. The characterization of select dolomite reservoirs was the major focus of our efforts in Phases I and II of the project. Structural mapping and log analysis in the Dundee (Devonian) and Trenton/Black River (Ordovician) suggest a close spatial relationship among gross dolomite distribution and regional-scale, wrench fault-related NW-SE and NE-SW structural trends. A high temperature origin for much of the dolomite in these 2 studied intervals (based upon fluid inclusion homogenization temperatures and stable isotopic analyses,) coupled with persistent association of this dolomite in reservoirs coincident with wrench fault-related features, is strong evidence for these reservoirs being influenced by hydrothermal dolomitization. In the Niagaran (Silurian), there is a general trend of increasing dolomitization shelfward, with limestone predominant in more basinward positions. A major finding is that facies types, when analyzed at a detailed level, are directly related to reservoir porosity and permeability in these dolomites which increases the predictability of reservoir quality in these units. This pattern is consistent with our original hypothesis of primary facies control on dolomitization and resulting reservoir quality at some level. The identification of distinct and predictable vertical stacking patterns within a hierarchical sequence and cycle framework provides a high degree of confidence at this point that the results should be exportable throughout the basin. Much of the data synthesis and modeling for the project was scheduled to be part of Year 3/Phase III, but the discontinuation of funding after Year 2 precluded those efforts. Therefore, the results presented in this document are not final, and in many cases represent a report of “progress to date”. 3 TABLE OF CONTENTS Abstract p. 2 Executive Summary p. 6 Introduction p. Rationale and Goals of the Project Background – Mechanisms for Dolomitization Stratigraphy and Dolomite Occurrences in Michigan Basin Paleozoic Carbonate Reservoirs Structural Elements, Thermal Evolution, and Hydrothermal Mineralization in the Michigan Basin Variations in Dolomitization and Reservoir Geometries in the Michigan Basin Petrographic and Analytical Study of Dolomitized Carbonate Reservoirs Reservoir Characterization – Petrophysical Properties of Carbonate Sediments and Rocks Project Approach and Discussion of Results by Task (Phase I and II) p. Summary of Phase I and II – Devonian and Ordovician p. Summary of Phase I and II – Silurian (Niagaran) p. Discussion: Phase I and II- Initial Results from Tasks 2 and 3 p. “Controls on Dolomitization in the Middle Devonian Dundee Formation - Oil Field Scale Structure and the Distribution of Log-Based Dolomite Lithofacies” Silurian (Niagaran) – Petrophysical Facies and Image Analysis p. Summary of Currently Available Geologic Data through Phase II p. Ordovician Trenton/Black River Trend Silurian Niagaran Trend Devonian Trend Report References p. Bibliography – part of Task 2 (Compilation of currently available p. geologic data and literature). 4 Appendix 1: Practical Synergies for Increasing Domestic Oil Production and p. Geological Sequestration of Anthropogenic CO2: An example from the Silurian of the Michigan Basin Appendix 2: Summary of Currently Available Geologic Data (Task 2) p. Production analysis data and graphs. 1. Ordovician Trenton/Black River 2. Silurian Niagaran 3. Devonian Dundee Appendix 3: Project presentations (abstracts) at professional meetings p. (Year 2/Phase II) Appendix 4: Miscellaneous Project Presentations (titles) p. 5 EXECUTIVE SUMMARY This final scientific/technical report covers the first 2 years (Phases I and II of an originally planned 3 Year/3 Phase program). The project was focused on evaluating the relationship between fracture-related dolomite and dolomite constrained by primary rock fabric in the 3 most prolific reservoir intervals in the Michigan Basin (Ordovician Trenton-Black River Formations; Silurian Niagara Group; and the Devonian Dundee Formation). Much of the data synthesis and modeling for the project was scheduled to be part of Year 3/Phase III, but the discontinuation of funding after Year 2 precluded those efforts. Dolomitization is widespread and generally a critical factor in the origin of these most prolific, hydrocarbon reservoirs in the Michigan Basin: i.e. the Middle Ordovician Trenton/Black River Formations, the Silurian Niagara Group and the Middle Devonian Dundee Limestone. These units are the most economically important reservoirs in the basin. However, they consist of a wide range of dolomite types resulting in complex spatial variability of both geometry and quality of dolomite reservoirs. The characterization of select dolomite reservoirs was the major focus of our efforts in Phases I and II of the project. Fields were prioritized based upon the availability of rock data for interpretation of depositional environments, fracture density and distribution as well as thin section, geochemical, and petrophysical analyses. Structural mapping and log analysis in the Dundee (Devonian) and Trenton/Black River (Ordovician) suggest a close spatial relationship among gross dolomite distribution and regional-scale, wrench fault-related NW-SE and NE-SW structural trends. A high temperature origin for much of the dolomite in these 2 studied intervals (based upon initial fluid inclusion homogenization temperatures and stable isotopic analyses,) coupled with persistent association of this dolomite in reservoirs coincident with wrench fault- related features, is strong evidence for these reservoirs being influenced by hydrothermal dolomitization. For the Niagaran (Silurian), there is a general trend of increasing dolomitization shelfward, with limestone predominant in more basinward positions. Reservoir quality porosity and permeability is characterized by a combination of dissolution-related molds, vugs, and locally cavernous porosity that is enhanced in the dolomite sections by intercrystalline porosity. A comprehensive high resolution sequence stratigraphic framework was developed for a pinnacle reef in the northern reef trend where we had 100% core coverage throughout the reef section. This sequence framework was then compared with major Niagaran fields in the southern reef trend, although comprehensive correlation and 3-D modeling did not occur because these tasks were part of Phase III. Major findings to date are that facies types, when analyzed at a detailed level, have direct links to reservoir porosity and permeability in these dolomites. This pattern is consistent with our original hypothesis of primary facies control on dolomitization and resulting reservoir quality at some level. The identification of distinct and predictable vertical stacking patterns within a hierarchical sequence and cycle framework provides a high degree of confidence at this point that the results should be exportable throughout the basin. 6 Ten reservoir significant lithofacies were described in the northern reef trend, providing significantly more resolution than the standard 4-6 that are used most often in the basin (e.g. Gill, 1977). Initial petrophysical characterization (sonic velocity analysis under confining pressures) showed a clear pattern that is dependent upon facies and resulting pore architecture. Primary facies is a key factor in the ultimate diagenetic modification of the rock and the resulting pore architecture. Facies with good porosity and permeability clearly showed relatively slow velocity values as would be expected, and low porosity and permeability samples exhibit fast sonic velocity values, again as expected. What is significant is that some facies that have
Load more

Recommended publications
  • Hydrogeologic Framework of Mississippian Rocks in the Central Lower Peninsula of Michigan
    Hydrogeologic Framework of Mississippian Rocks in the Central Lower Peninsula of Michigan By D.B. WESTJOHN and T.L. WEAVER U.S. Geological Survey Water-Resources Investigations Report 94-4246 Lansing, Michigan 1996 U.S. DEPARTMENT OF THE INTERIOR BRUCE BABBITT, Secretary U.S. GEOLOGICAL SURVEY Gordon P. Eaton, Director Any use of trade, product, or firm name in this report is for identification purposes only and does not constitute endorsement by the U.S. Geological Survey. For additional information Copies of this report may be write to: purchased from: District Chief U.S. Geological Survey U.S. Geological Survey, WRD Earth Science Information Center 6520 Mercantile Way, Suite 5 Open-File Reports Section Lansing, Ml 48911 Box 25286, MS 517 Denver Federal Center Denver, CO 80225 CONTENTS Abstract .......................................................... 1 Introduction ....................................................... 1 Geology .......................................................... 3 Coldwater Shale ................................................ 3 Marshall Sandstone .............................................. 6 Michigan Formation .............................................. 7 Hydrogeologic framework of Mississippian rocks ................................ 8 Relations of stratigraphic units to aquifer and confining units .................... 8 Delineation of aquifer- and confining-unit boundaries ......................... 9 Description of confining units and the Marshall aquifer ........................ 9 Michigan confining
    [Show full text]
  • Stratographic Coloumn of Iowa
    Iowa Stratographic Column November 4, 2013 QUATERNARY Holocene Series DeForest Formation Camp Creek Member Roberts Creek Member Turton Submember Mullenix Submember Gunder Formation Hatcher Submember Watkins Submember Corrington Formation Flack Formation Woden Formation West Okoboji Formation Pleistocene Series Wisconsinan Episode Peoria Formation Silt Facies Sand Facies Dows Formation Pilot Knob Member Lake Mills Member Morgan Member Alden Member Noah Creek Formation Sheldon Creek Formation Roxana/Pisgah Formation Illinoian Episode Loveland Formation Glasford Formation Kellerville Memeber Pre-Illinoian Wolf Creek Formation Hickory Hills Member Aurora Memeber Winthrop Memeber Alburnett Formation A glacial tills Lava Creek B Volcanic Ash B glacial tills Mesa Falls Volcanic Ash Huckleberry Ridge Volcanic Ash C glacial tills TERTIARY Salt & Pepper sands CRETACEOUS "Manson" Group "upper Colorado" Group Niobrara Formation Fort Benton ("lower Colorado ") Group Carlile Shale Greenhorn Limestone Graneros Shale Dakota Formation Woodbury Member Nishnabotna Member Windrow Formation Ostrander Member Iron Hill Member JURASSIC Fort Dodge Formation PENNSYLVANIAN (subsystem of Carboniferous System) Wabaunsee Group Wood Siding Formation Root Formation French Creek Shale Jim Creek Limestone Friedrich Shale Stotler Formation Grandhaven Limestone Dry Shale Dover Limestone Pillsbury Formation Nyman Coal Zeandale Formation Maple Hill Limestone Wamego Shale Tarkio Limestone Willard Shale Emporia Formation Elmont Limestone Harveyville Shale Reading Limestone Auburn
    [Show full text]
  • PROFESSIONAL PAPER 1418 USGS Cience for a Changing World AVAILABILITY of BOOKS and MAPS of the U.S
    PROFESSIONAL PAPER 1418 USGS cience for a changing world AVAILABILITY OF BOOKS AND MAPS OF THE U.S. GEOLOGICAL SURVEY Instructions on ordering publications of the U.S. Geological Survey, along with prices of the last offerings, are given in the current- year issues of the monthly catalog "New Publications of the U.S. Geological Survey." Prices of available U.S. Geological Survey publica­ tions released prior to the current year are listed in the most recent annual "Price and Availability List." Publications that may be listed in various U.S. Geological Survey catalogs (see back inside cover) but not listed in the most recent annual "Price and Availability List" may be no longer available. Order U.S. Geological Survey publications by mail or over the counter from the offices given below. BY MAIL OVER THE COUNTER Books Books and Maps Professional Papers, Bulletins, Water-Supply Papers, Tech­ Books and maps of the U.S. Geological Survey are available niques of Water-Resources Investigations, Circulars, publications over the counter at the following U.S. Geological Survey Earth of general interest (such as leaflets, pamphlets, booklets), single Science Information Centers (ESIC's), all of which are authorized copies of Preliminary Determination of Epicenters, and some mis­ agents of the Superintendent of Documents: cellaneous reports, including some of the foregoing series that have gone out of print at the Superintendent of Documents, are ANCHORAGE, Alaska Rm. 101,4230 University Dr. obtainable by mail from LAKEWOOD, Colorado Federal Center, Bldg. 810 U.S. Geological Survey, Information Services MENLO PARK, California Bldg. 3, Rm.
    [Show full text]
  • Cambrian Ordovician
    Open File Report LXXVI the shale is also variously colored. Glauconite is generally abundant in the formation. The Eau Claire A Summary of the Stratigraphy of the increases in thickness southward in the Southern Peninsula of Michigan where it becomes much more Southern Peninsula of Michigan * dolomitic. by: The Dresbach sandstone is a fine to medium grained E. J. Baltrusaites, C. K. Clark, G. V. Cohee, R. P. Grant sandstone with well rounded and angular quartz grains. W. A. Kelly, K. K. Landes, G. D. Lindberg and R. B. Thin beds of argillaceous dolomite may occur locally in Newcombe of the Michigan Geological Society * the sandstone. It is about 100 feet thick in the Southern Peninsula of Michigan but is absent in Northern Indiana. The Franconia sandstone is a fine to medium grained Cambrian glauconitic and dolomitic sandstone. It is from 10 to 20 Cambrian rocks in the Southern Peninsula of Michigan feet thick where present in the Southern Peninsula. consist of sandstone, dolomite, and some shale. These * See last page rocks, Lake Superior sandstone, which are of Upper Cambrian age overlie pre-Cambrian rocks and are The Trempealeau is predominantly a buff to light brown divided into the Jacobsville sandstone overlain by the dolomite with a minor amount of sandy, glauconitic Munising. The Munising sandstone at the north is dolomite and dolomitic shale in the basal part. Zones of divided southward into the following formations in sandy dolomite are in the Trempealeau in addition to the ascending order: Mount Simon, Eau Claire, Dresbach basal part. A small amount of chert may be found in and Franconia sandstones overlain by the Trampealeau various places in the formation.
    [Show full text]
  • Stratigraphic Succession in Lower Peninsula of Michigan
    STRATIGRAPHIC DOMINANT LITHOLOGY ERA PERIOD EPOCHNORTHSTAGES AMERICANBasin Margin Basin Center MEMBER FORMATIONGROUP SUCCESSION IN LOWER Quaternary Pleistocene Glacial Drift PENINSULA Cenozoic Pleistocene OF MICHIGAN Mesozoic Jurassic ?Kimmeridgian? Ionia Sandstone Late Michigan Dept. of Environmental Quality Conemaugh Grand River Formation Geological Survey Division Late Harold Fitch, State Geologist Pennsylvanian and Saginaw Formation ?Pottsville? Michigan Basin Geological Society Early GEOL IN OG S IC A A B L N Parma Sandstone S A O G C I I H E C T I Y Bayport Limestone M Meramecian Grand Rapids Group 1936 Late Michigan Formation Stratigraphic Nomenclature Project Committee: Mississippian Dr. Paul A. Catacosinos, Co-chairman Mark S. Wollensak, Co-chairman Osagian Marshall Sandstone Principal Authors: Dr. Paul A. Catacosinos Early Kinderhookian Coldwater Shale Dr. William Harrison III Robert Reynolds Sunbury Shale Dr. Dave B.Westjohn Mark S. Wollensak Berea Sandstone Chautauquan Bedford Shale 2000 Late Antrim Shale Senecan Traverse Formation Traverse Limestone Traverse Group Erian Devonian Bell Shale Dundee Limestone Middle Lucas Formation Detroit River Group Amherstburg Form. Ulsterian Sylvania Sandstone Bois Blanc Formation Garden Island Formation Early Bass Islands Dolomite Sand Salina G Unit Paleozoic Glacial Clay or Silt Late Cayugan Salina F Unit Till/Gravel Salina E Unit Salina D Unit Limestone Salina C Shale Salina Group Salina B Unit Sandy Limestone Salina A-2 Carbonate Silurian Salina A-2 Evaporite Shaley Limestone Ruff Formation
    [Show full text]
  • Middle Devonian Formations in the Subsurface of Northwestern Ohio
    STATE OF OHIO DEPARTMENT OF NATURAL RESOURCES DIVISION OF GEOLOGICAL SURVEY Horace R. Collins, Chief Report of Investigations No. 78 MIDDLE DEVONIAN FORMATIONS IN THE SUBSURFACE OF NORTHWESTERN OHIO by A. Janssens Columbus 1970 SCIENTIFIC AND TECHNICAL STAFF OF THE OHIO DIVISION OF GEOLOGICAL SURVEY ADMINISTRATIVE SECTION Horace R. Collins, State Geologist and Di v ision Chief David K. Webb, Jr., Geologist and Assistant Chief Eleanor J. Hyle, Secretary Jean S. Brown, Geologist and Editor Pauline Smyth, Geologist Betty B. Baber, Geologist REGIONAL GEOLOGY SECTION SUBSURFACE GEOLOGY SECTION Richard A. Struble, Geologist and Section Head William J. Buschman, Jr., Geologist and Section Head Richard M. Delong, Geologist Michael J. Clifford, Geologist G. William Kalb, Geochemist Adriaan J anssens, Geologist Douglas L. Kohout, Geologis t Frederick B. Safford, Geologist David A. Stith, Geologist Jam es Wooten, Geologist Aide Joel D. Vormelker, Geologist Aide Barbara J. Adams, Clerk· Typist B. Margalene Crammer, Clerk PUBLICATIONS SECTION LAKE ERIE SECTION Harold J. Fl inc, Cartographer and Section Head Charles E. Herdendorf, Geologist and Sectwn Head James A. Brown, Cartographer Lawrence L. Braidech, Geologist Donald R. Camburn, Cartovapher Walter R. Lemke, Boat Captain Philip J. Celnar, Cartographer David B. Gruet, Geologist Aide Jean J. Miller, Photocopy Composer Jean R. Ludwig, Clerk- Typist STATE OF OHIO DEPARTMENT OF NATURAL RESOURCES DIVISION OF GEOLOGICAL SURVEY Horace R. Collins, Chief Report of Investigations No. 78 MIDDLE DEVONIAN FORMATIONS IN THE SUBSURFACE OF NORTHWESTERN OHIO by A. Janssens Columbus 1970 GEOLOGY SERVES OHIO CONTENTS Page Introduction . 1 Previous investigations .. .. .. .. .. .. .. .. .. 1 Study methods . 4 Detroit River Group . .. .. .. ... .. ... .. .. .. .. .. .. .. ... .. 6 Sylvania Sandstone ..........................
    [Show full text]
  • CONTROLS on DOLOMITIZATION of the UPPER ORDOVICIAN TRENTON LIMESTONE in SOUTH-CENTRAL KENTUCKY COLLIN JAMES GRAY Department Of
    CONTROLS ON DOLOMITIZATION OF THE UPPER ORDOVICIAN TRENTON LIMESTONE IN SOUTH-CENTRAL KENTUCKY COLLIN JAMES GRAY Department of Geological Sciences APPROVED: Dr. Katherine Giles, Ph.D., Chair Dr. Richard Langford, Ph.D. Dr. Matthew Johnston, Ph.D. Charles Ambler, Ph.D. Dean of the Graduate School Copyright © by Collin James Gray 2015 Dedication I dedicate my thesis work to my family. My dedicated and loving parents, Michael and Deborah Gray have always supported me and provided words of encouragement during the struggles of my research. The support provided was second to none and I could not imagine reaching this point in my education without them. I also dedicate this thesis to my two brothers, Michael and Nathan Gray and my sister Nicole Gray. Without these role models I cannot imagine where my education would have ended. I will always appreciate the support provided by all three of you and consider you to be role models that I can always look up to. CONTROLS ON DOLOMITIZATION OF THE UPPER ORDOVICIAN TRENTON LIMESTONE IN SOUTH-CENTRAL KENTUCKY by COLLIN JAMES GRAY, B.S. GEOLOGY THESIS Presented to the Faculty of the Graduate School of The University of Texas at El Paso in Partial Fulfillment of the Requirements for the Degree of MASTER OF SCIENCE Department of Geological Sciences THE UNIVERSITY OF TEXAS AT EL PASO December 2015 Acknowledgements I wish to thank my committee whose time and expertise provided excellent input into my research. Dr. Katherine Giles, my M.S. supervisor provided guidance and provided endless suggestions and recommendations throughout my research while continuously motivating me to continue my education.
    [Show full text]
  • 2015 Annual Report
    2015 ANNUAL REPORT CHINA NATIONAL COMMITTEE FOR IGCP Part One: Chairperson and Vice Chairpersons/Secretariat of the National Committee: Chairman: Prof. Liu Dunyi Institute of Geology Chinese Academy of Geological Sciences (CAGS) 26 Baiwanzhuang Road Beijing 100037, China Tel: +86-(10)-6831-1545 Fax: +86-(10)-6831-1545 E-mail: [email protected] Vice Chairpersons: Ms. Wang Rongfang Division Chief International Organizations and Conferences Department of International Cooperation Ministry of Science and Technology, P. R. China 15B Fuxing Road, Beijing 100862, China Tel: +86-(10)-5888-1320 Fax: +86-(10)-5888-1324 E-mail: [email protected] Prof. Chai Yucheng Earth Sciences Department National Natural Science Foundation of China No. 83 Shuangqing Road Beijing 100085, China Tel: +86-(10)-6232-7159 Fax: +86-(10)-6232-6900 E-mail: [email protected] Mr. Sun Baoliang Chengdu Bureau of State Land Supervision E-mail: [email protected] Secretary-General: Prof. Dong Shuwen Chinese Academy of Geological Sciences 26 Baiwanzhuang Road Beijing 100037, China Tel: +86-(10)-6899-9606 Fax: +86-(10)-6831-0894 E-mail: [email protected] Secretariat: Secretariat China National Committee for IGCP Division of International Cooperation Chinese Academy of Geological Sciences 26 Baiwanzhuang Road Beijing 100037, China Tel: +86-(10)-6831-0893 or +86-(10)-6899-9619 Fax: +86-(10)-6831-0894 E-mail: [email protected] Http: www.cags.ac.cn/igcp-china Part Two: Membership of the Committee: Prof. Deng Jun President, China University of Geosciences (Beijing) Prof. Jin Zhijun Head of Exploration and Production Research Institute, SINOPEC Prof. Lian Changyun Deputy Director of Department of Science and Technology & International Cooperation, China Geological Survey Prof.
    [Show full text]
  • Type and Figured Fossils in the Worthen Collection at the Illinois
    s Cq&JI ^XXKUJtJLI 14oGS: CIR 524 c, 2 TYPE AND FIGURED FOSSILS IN THE WORTHEN COLLECTION AT THE ILLINOIS STATE GEOLOGICAL SURVEY Lois S. Kent GEOLOGICAL ILLINOIS Illinois Department of Energy and Natural Resources, STATE GEOLOGICAL SURVEY DIVISION CIRCULAR 524 1982 COVER: This portrait of Amos Henry Worthen is from a print presented to me by Worthen's great-grandson, Arthur C. Brookley, Jr., at the time he visited the Illinois State Geological Survey in the late 1950s or early 1960s. The picture is the same as that published in connection with the memorial to Worthen in the appendix to Vol. 8 of the Geological Survey of Illinois, 1890. -LSK Kent, Lois S., Type and figured fossils in the Worthen Collection at the Illinois State Geological Survey. — Champaign, III. : Illinois State Geological Survey, 1982. - 65 p. ; 28 cm. (Circular / Illinois State Geological Survey ; 524) 1. Paleontology. 2. Catalogs and collections. 3. Worthen Collection. I. Title. II. Series. Editor: Mary Clockner Cover: Sandra Stecyk Printed by the authority of the State of Illinois/1982/2500 II I IHOI'.MAII '.I 'II Of.ir.AI MIHVI y '> 300 1 00003 5216 TYPE AND FIGURED FOSSILS IN THE WORTHEN COLLECTION AT THE ILLINOIS STATE GEOLOGICAL SURVEY Lois S. Kent | CIRCULAR 524 1982 ILLINOIS STATE GEOLOGICAL SURVEY Robert E. Bergstrom, Acting Chief Natural Resources Building, 615 East Peabody Drive, Champaign, IL 61820 TYPE AND FIGURED FOSSILS IN THE WORTHEN COLLECTION AT THE ILLINOIS STATE GEOLOGICAL SURVEY CONTENTS Acknowledgments 2 Introduction 2 Organization of the catalog 7 Notes 8 References 8 Fossil catalog 13 ABSTRACT This catalog lists all type and figured specimens of fossils in the part of the "Worthen Collection" now housed at the Illinois State Geological Survey in Champaign, Illinois.
    [Show full text]
  • A Deposit Model for Mississippi Valley-Type Lead-Zinc Ores
    A Deposit Model for Mississippi Valley-Type Lead-Zinc Ores Chapter A of Mineral Deposit Models for Resource Assessment 2 cm Sample of spheroidal sphalerite with dendritic sphalerite, galena, and iron sulfides (pyrite plus marcasite) from the Pomorzany mine. Note the “up direction” is indicated by “snow-on-the-roof” texture of galena and Scientificsphalerite Investigations alnong colloform Report layers of2010–5070–A light-colored spahlerite. Hydrothermal sulfide clasts in the left center of the sample are encrusted by sphalerire and iron sulfides. Size of sample is 20x13 cm. Photo by David Leach. U.S. Department of the Interior U.S. Geological Survey COVER: Sample of spheroidal sphalerite with dendritic sphalerite, galena, and iron sulfides (pyrite plus mar- casite) from Pomorzany mine. Note the “up direction” is indicated by “snow-on-the-roof” texture of galena and sphalerite along colloform layers of light-colored sphalerite. Hydrothermal sulfide clasts in the left center of the sample are encrusted by sphalerite and iron sulfides. Size of sample is 20x13 centimeters. (Photograph by David L. Leach, U.S. Geological Survey.) A Deposit Model for Mississippi Valley- Type Lead-Zinc Ores By David L. Leach, Ryan D. Taylor, David L. Fey, Sharon F. Diehl, and Richard W. Saltus Chapter A of Mineral Deposit Models for Resource Assessment Scientific Investigations Report 2010–5070–A U.S. Department of the Interior U.S. Geological Survey U.S. Department of the Interior KEN SALAZAR, Secretary U.S. Geological Survey Marcia K. McNutt, Director U.S.
    [Show full text]
  • Reservoir Geology of the Dundee Limestone, West Branch Field, Michigan
    Western Michigan University ScholarWorks at WMU Master's Theses Graduate College 12-1990 Reservoir Geology of the Dundee Limestone, West Branch Field, Michigan Brendan Ciaran Curran Follow this and additional works at: https://scholarworks.wmich.edu/masters_theses Part of the Geology Commons Recommended Citation Curran, Brendan Ciaran, "Reservoir Geology of the Dundee Limestone, West Branch Field, Michigan" (1990). Master's Theses. 1053. https://scholarworks.wmich.edu/masters_theses/1053 This Masters Thesis-Open Access is brought to you for free and open access by the Graduate College at ScholarWorks at WMU. It has been accepted for inclusion in Master's Theses by an authorized administrator of ScholarWorks at WMU. For more information, please contact [email protected]. RESERVOIR GEOLOGY OF THE DUNDEE LIMESTONE, WEST BRANCH FIELD, MICHIGAN by Brendan Ciaran Curran A Thesis Submitted to the Faculty of The Graduate College in partial fulfillment of the requirements for the Degree of Master of Science Department of Geology Western Michigan University Kalamazoo, Michigan December 1990 Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. RESERVOIR GEOLOGY OF THE DUNDEE LIMESTONE, WEST BRANCH FIELD, MICHIGAN Brendan Ciaran Curran, M.S. W estern Michigan University, 1990 West Branch field is a low-relief, NW-SE-trending anticline near the center of the Michigan basin. Since 1934, the Dundee Limestone (Middle Devonian) has produced over 12 million barrels of oil from this field. From core studies, six depositional facies types were recognized in the Dundee. These are dominated by bioclastic carbonate sand facies deposited in normal- marine shelf settings. Although burial cements have occluded some porosity, carbonate sand facies have retained significant primary interparticle porosity and are the most important reservoir rocks.
    [Show full text]
  • Detroit River Group in the Michigan Basin
    GEOLOGICAL SURVEY CIRCULAR 133 September 1951 DETROIT RIVER GROUP IN THE MICHIGAN BASIN By Kenneth K. Landes UNITED STATES DEPARTMENT OF THE INTERIOR Oscar L. Chapman, Secretary GEOLOGICAL SURVEY W. E. Wrather, Director Washington, D. C. Free on application to the Geological Survey, Washington 25, D. C. CONTENTS Page Page Introduction............................ ^ Amherstburg formation................. 7 Nomenclature of the Detroit River Structural geology...................... 14 group................................ i Geologic history ....................... ^4 Detroit River group..................... 3 Economic geology...................... 19 Lucas formation....................... 3 Reference cited........................ 21 ILLUSTRATIONS Figure 1. Location of wells and cross sections used in the study .......................... ii 2. Correlation chart . ..................................... 2 3. Cross sections A-«kf to 3-G1 inclusive . ......................;.............. 4 4. Facies map of basal part of Dundee formation. ................................. 5 5. Aggregate thickness of salt beds in the Lucas formation. ........................ 8 6. Thickness map of Lucas formation. ........................................... 10 7. Thickness map of Amherstburg formation (including Sylvania sandstone member. 11 8. Lime stone/dolomite facies map of Amherstburg formation ...................... 13 9. Thickness of Sylvania sandstone member of Amherstburg formation.............. 15 10. Boundary of the Bois Blanc formation in southwestern Michigan.
    [Show full text]