Shorter Contributions to General Geology
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The Laccolith-Stock Controversy: New Results from the Southern Henry Mountains, Utah
The laccolith-stock controversy: New results from the southern Henry Mountains, Utah MARIE D. JACKSON* Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, Maryland 21218 DAVID D. POLLARD Departments of Applied Earth Sciences and Geology, Stanford University, Stanford, California 94305 ABSTRACT rule out the possibility of a stock at depth. At Mesa, Fig. 1). Gilbert inferred that the central Mount Hillers, paleomagnetic vectors indi- intrusions underlying the large domes are Domes of sedimentary strata at Mount cate that tongue-shaped sills and thin lacco- floored, mushroom-shaped laccoliths (Fig. 3). Holmes, Mount Ellsworth, and Mount Hillers liths overlying the central intrusion were More recently, C. B. Hunt (1953) inferred that in the southern Henry Mountains record suc- emplaced horizontally and were rotated dur- the central intrusions in the Henry Mountains cessive stages in the growth of shallow (3 to 4 ing doming through about 80° of dip. This are cylindrical stocks, surrounded by zones of km deep) magma chambers. Whether the in- sequence of events is not consistent with the shattered host rock. He postulated a process in trusions under these domes are laccoliths or emplacement of a stock and subsequent or which a narrow stock is injected vertically up- stocks has been the subject of controversy. contemporaneous lateral growth of sills and ward and then pushes aside and domes the sed- According to G. K. Gilbert, the central intru- minor laccoliths. Growth in diameter of a imentary strata as it grows in diameter. After the sions are direct analogues of much smaller, stock from about 300 m at Mount Holmes to stock is emplaced, tongue-shaped sills and lacco- floored intrusions, exposed on the flanks of nearly 3 km at Mount Hillers, as Hunt sug- liths are injected radially from the discordant the domes, that grew from sills by lifting and gested, should have been accompanied by sides of the stock (Fig. -
Exhibit Specimen List FLORIDA SUBMERGED the Cretaceous, Paleocene, and Eocene (145 to 34 Million Years Ago) PARADISE ISLAND
Exhibit Specimen List FLORIDA SUBMERGED The Cretaceous, Paleocene, and Eocene (145 to 34 million years ago) FLORIDA FORMATIONS Avon Park Formation, Dolostone from Eocene time; Citrus County, Florida; with echinoid sand dollar fossil (Periarchus lyelli); specimen from Florida Geological Survey Avon Park Formation, Limestone from Eocene time; Citrus County, Florida; with organic layers containing seagrass remains from formation in shallow marine environment; specimen from Florida Geological Survey Ocala Limestone (Upper), Limestone from Eocene time; Jackson County, Florida; with foraminifera; specimen from Florida Geological Survey Ocala Limestone (Lower), Limestone from Eocene time; Citrus County, Florida; specimens from Tanner Collection OTHER Anhydrite, Evaporite from early Cenozoic time; Unknown location, Florida; from subsurface core, showing evaporite sequence, older than Avon Park Formation; specimen from Florida Geological Survey FOSSILS Tethyan Gastropod Fossil, (Velates floridanus); In Ocala Limestone from Eocene time; Barge Canal spoil island, Levy County, Florida; specimen from Tanner Collection Echinoid Sea Biscuit Fossils, (Eupatagus antillarum); In Ocala Limestone from Eocene time; Barge Canal spoil island, Levy County, Florida; specimens from Tanner Collection Echinoid Sea Biscuit Fossils, (Eupatagus antillarum); In Ocala Limestone from Eocene time; Mouth of Withlacoochee River, Levy County, Florida; specimens from John Sacha Collection PARADISE ISLAND The Oligocene (34 to 23 million years ago) FLORIDA FORMATIONS Suwannee -
Wec01's SSSS Fossils Test 2019
wec01’s SSSS Fossils Test 2019 Team Name: _________________KEY________________ Team Number: ___KEY___ Team Members: ____________KEY____________, ____________KEY____________ This test consists of 18 stations with a total of 200 points. Each answer is worth one point except where specified otherwise. You are only given 2 ½ minutes with the specimens at each station, however you can work on any station’s questions at any time. Scoring Station 1: ___10___ / 10 Station 10: ___12___ / 12 Station 2: ___10___ / 10 Station 11: ____9___ / 9 Station 3: ___11___ / 11 Station 12: ___11___ / 11 Station 4: ___10___ / 10 Station 13: ___10___ / 10 Station 5: ___10___ / 10 Station 14: ___10___ / 10 Station 6: ____9___ / 9 Station 15: ___12___ / 12 Station 7: ____9___ / 9 Station 16: ____9___ / 9 Station 8: ___10___ / 10 Station 17: ___10___ / 10 Station 9: ____9___ / 9 Station 18: ___29___ / 29 Total: __200___ / 200 Team Number: _KEY_ Station 1: Dinosaurs (10 pt) 1. Identify the genus of specimen A Tyrannosaurus (1 pt) 2. Identify the genus of specimen B Stegosaurus (1 pt) 3. Identify the genus of specimen C Allosaurus (1 pt) 4. Which specimen(s) (A, B, or C) are A, C (1 pt) Saurischians? 5. Which two specimens (A, B, or C) lived at B, C (1 pt) the same time? 6. Identify the genus of specimen D Velociraptor (1 pt) 7. Identify the genus of specimen E Coelophysis (1 pt) 8. Which specimen (D or E) is commonly E (1 pt) found in Ghost Ranch, New Mexico? 9. Which specimen (A, B, C, D, or E) would D (1 pt) specimen F have been found on? 10. -
Well Construction at the Lake Amoret Well Site in Polk County, Florida
Well Construction at the Lake Amoret Well Site in Polk County, Florida Southwest Florida Water Management District Geohydrologic Data Section Revised March 2019 Cover Photo: Permanent monitor wells at the Lake Amoret well site in Polk County, Florida. In order from left to right: SURF AQ MONI- TOR, U FLDN AQ MONITOR. Photograph by Julia Zydek Well Construction at the Lake Amoret Well Site in Polk County, Florida By Julia Zydek Revised March 2018 Southwest Florida Water Management District Geohydrologic Data Section Southwest Florida Water Management District Operations, Lands and Resource Monitoring Division Ken Frink, P.E., Director Data Collection Bureau Sandie Will, P.G., Chief Geohydrologic Data Section M. Ted Gates, P.G., C.P.G., Manager Southwest Florida Water Management District 2379 Broad Street Brooksville, FL 34604-6899 For ordering information: World Wide Web: http://www.watermatters.org/documents Telephone: 1-800-423-1476 For more information on the Southwest Florida Water Management District and its mission to manage and protect water and related resources: World Wide Web: http://www.watermatters.org Telephone: 1-800-423-1476 The Southwest Florida Water Management District (District) does not discriminate on the basis of disability. This nondiscrimination policy involves every aspect of the District’s functions, includ- ing access to and participation in the District’s programs and activities. Anyone requiring reason- able accommodation as provided for in the Americans with Disabilities Act should contact the District’s Human Resources Office Chief, 2379 Broad St., Brooksville, FL 34604-6899; telephone (352) 796-7211 or 1-800-423-1476 (FL only), ext. -
Functional Morphology of the Vertebral Column in Remingtonocetus (Mammalia, Cetacea) and the Evolution of Aquatic Locomotion in Early Archaeocetes
Functional Morphology of the Vertebral Column in Remingtonocetus (Mammalia, Cetacea) and the Evolution of Aquatic Locomotion in Early Archaeocetes by Ryan Matthew Bebej A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy (Ecology and Evolutionary Biology) in The University of Michigan 2011 Doctoral Committee: Professor Philip D. Gingerich, Co-Chair Professor Philip Myers, Co-Chair Professor Daniel C. Fisher Professor Paul W. Webb © Ryan Matthew Bebej 2011 To my wonderful wife Melissa, for her infinite love and support ii Acknowledgments First, I would like to thank each of my committee members. I will be forever grateful to my primary mentor, Philip D. Gingerich, for providing me the opportunity of a lifetime, studying the very organisms that sparked my interest in evolution and paleontology in the first place. His encouragement, patience, instruction, and advice have been instrumental in my development as a scholar, and his dedication to his craft has instilled in me the importance of doing careful and solid research. I am extremely grateful to Philip Myers, who graciously consented to be my co-advisor and co-chair early in my career and guided me through some of the most stressful aspects of life as a Ph.D. student (e.g., preliminary examinations). I also thank Paul W. Webb, for his novel thoughts about living in and moving through water, and Daniel C. Fisher, for his insights into functional morphology, 3D modeling, and mammalian paleobiology. My research was almost entirely predicated on cetacean fossils collected through a collaboration of the University of Michigan and the Geological Survey of Pakistan before my arrival in Ann Arbor. -
Transition of Eocene Whales from Land to Sea: Evidence from Bone Microstructure
RESEARCH ARTICLE Transition of Eocene Whales from Land to Sea: Evidence from Bone Microstructure Alexandra Houssaye1,2*, Paul Tafforeau3, Christian de Muizon4, Philip D. Gingerich5 1 UMR 7179 CNRS/Muséum National d’Histoire Naturelle, Département Ecologie et Gestion de la Biodiversité, Paris, France, 2 Steinmann Institut für Geologie, Paläontologie und Mineralogie, Universität Bonn, Bonn, Germany, 3 European Synchrotron Radiation Facility, Grenoble, France, 4 Sorbonne Universités, CR2P—CNRS, MNHN, UPMC-Paris 6, Département Histoire de la Terre, Muséum National d’Histoire Naturelle, Paris, France, 5 Department of Earth and Environmental Sciences and Museum of Paleontology, University of Michigan, Ann Arbor, Michigan, United States of America a11111 * [email protected] Abstract Cetacea are secondarily aquatic amniotes that underwent their land-to-sea transition during OPEN ACCESS the Eocene. Primitive forms, called archaeocetes, include five families with distinct degrees Citation: Houssaye A, Tafforeau P, de Muizon C, of adaptation to an aquatic life, swimming mode and abilities that remain difficult to estimate. Gingerich PD (2015) Transition of Eocene Whales The lifestyle of early cetaceans is investigated by analysis of microanatomical features in from Land to Sea: Evidence from Bone postcranial elements of archaeocetes. We document the internal structure of long bones, Microstructure. PLoS ONE 10(2): e0118409. ribs and vertebrae in fifteen specimens belonging to the three more derived archaeocete doi:10.1371/journal.pone.0118409 families — Remingtonocetidae, Protocetidae, and Basilosauridae — using microtomogra- Academic Editor: Brian Lee Beatty, New York phy and virtual thin-sectioning. This enables us to discuss the osseous specializations ob- Institute of Technology College of Osteopathic Medicine, UNITED STATES served in these taxa and to comment on their possible swimming behavior. -
B2158 Pt 08 Text
Previous section Volume contents Processes of Laccolithic Emplacement in the Southern Henry Mountains, Southeastern Utah By Marie Jackson1 CONTENTS References Cited............................................................................................................. 27 FIGURES 1. Simplified geologic map of the south Henry Mountains .......................................... 52 2. Interpretive radially oriented cross sections through Mounts Holmes, Ellsworth, and Hillers ................................................................................................................. 54 3. Zijderveldt plots showing the progressive demagnetization of a diorite porphyry sample from sill A in cross section C–C′.................................................................. 56 4. G.K. Gilbert’s concept of laccoliths in Henry Mountains ........................................ 56 5. Structure contour maps and cross sections of Mounts Holmes, Ellsworth, and Hillers, illustrating C.B. Hunt’s concept of relationships between the stocks and uplifts of the beds ............................................................................................... 57 6. Vertical cross sections showing states in growth of central intrusions and domes in the Henry Mountains ................................................................................. 58 A sequence of sedimentary rocks about 4 km thick was New geologic mapping (Jackson and Pollard, 1988) bent, stretched, and uplifted during the growth of three igne- demonstrates that the sedimentary -
National Park Service U.S
National Park Service U.S. Department of the Interior Natural Resource Stewardship and Science DOI Bison Report Looking Forward Natural Resource Report NPS/NRSS/BRMD/NRR—2014/821 ON THE COVER Bison bull at southeastern Utah's Henry Mountains Photograph by Utah Division of Wildlife Resources DOI Bison Report Looking Forward Natural Resource Report NPS/NRSS/BRMD/NRR—2014/821 Prepared by the Department of the Interior Bison Leadership Team and Working Group National Park Service Biological Resource Management Division 1201 Oakridge Drive, Suite 200 Fort Collins, Colorado 80525 June 2014 U.S. Department of the Interior National Park Service Natural Resource Stewardship and Science Fort Collins, Colorado The National Park Service, Natural Resource Stewardship and Science office in Fort Collins, Colorado, publishes a range of reports that address natural resource topics. These reports are of interest and applicability to a broad audience in the National Park Service and others in natural resource management, including scientists, conservation and environmental constituencies, and the public. The Natural Resource Report Series is used to disseminate high-priority, current natural resource management information with managerial application. The series targets a general, diverse audience, and may contain NPS policy considerations or address sensitive issues of management applicability. All manuscripts in the series receive the appropriate level of peer review to ensure that the information is scientifically credible, technically accurate, appropriately written for the intended audience, and designed and published in a professional manner. This report received informal peer review by subject-matter experts who were not directly involved in the collection, analysis, or reporting of the data. -
The Favorability of Florida's Geology to Sinkhole
Appendix H: Sinkhole Report 2018 State Hazard Mitigation Plan _______________________________________________________________________________________ APPENDIX H: Sinkhole Report _______________________________________________________________________________________ Florida Division of Emergency Management THE FAVORABILITY OF FLORIDA’S GEOLOGY TO SINKHOLE FORMATION Prepared For: The Florida Division of Emergency Management, Mitigation Section Florida Department of Environmental Protection, Florida Geological Survey 3000 Commonwealth Boulevard, Suite 1, Tallahassee, Florida 32303 June 2017 Table of Contents EXECUTIVE SUMMARY ............................................................................................................ 4 INTRODUCTION .......................................................................................................................... 4 Background ................................................................................................................................. 5 Subsidence Incident Report Database ..................................................................................... 6 Purpose and Scope ...................................................................................................................... 7 Sinkhole Development ................................................................................................................ 7 Subsidence Sinkhole Formation .............................................................................................. 8 Collapse Sinkhole -
The Biology of Marine Mammals
Romero, A. 2009. The Biology of Marine Mammals. The Biology of Marine Mammals Aldemaro Romero, Ph.D. Arkansas State University Jonesboro, AR 2009 2 INTRODUCTION Dear students, 3 Chapter 1 Introduction to Marine Mammals 1.1. Overture Humans have always been fascinated with marine mammals. These creatures have been the basis of mythical tales since Antiquity. For centuries naturalists classified them as fish. Today they are symbols of the environmental movement as well as the source of heated controversies: whether we are dealing with the clubbing pub seals in the Arctic or whaling by industrialized nations, marine mammals continue to be a hot issue in science, politics, economics, and ethics. But if we want to better understand these issues, we need to learn more about marine mammal biology. The problem is that, despite increased research efforts, only in the last two decades we have made significant progress in learning about these creatures. And yet, that knowledge is largely limited to a handful of species because they are either relatively easy to observe in nature or because they can be studied in captivity. Still, because of television documentaries, ‘coffee-table’ books, displays in many aquaria around the world, and a growing whale and dolphin watching industry, people believe that they have a certain familiarity with many species of marine mammals (for more on the relationship between humans and marine mammals such as whales, see Ellis 1991, Forestell 2002). As late as 2002, a new species of beaked whale was being reported (Delbout et al. 2002), in 2003 a new species of baleen whale was described (Wada et al. -
African Origins 200 Million Years of Calcium Carbonate Deposition
The Florida We are all So Familiar With is a relatively new phenomenon, geologically speaking. This distinctive peninsula of land we live on, and the gently sloping, sandy shorelines we’re drawn to for recreation and renewal, have not always existed as they appear today. In fact, Florida was a very different-looking place not so long ago, and over the past 500 million years it has had quite a unique and surprising geological history. African Origins Believe it or not, the deep bedrock that underlies Florida was originally a part of Africa. Florida’s oldest Scott, Means) rocks formed about 500 million years ago on the “megacontinent” Gondwana. They were wedged between other masses of rock that would eventually separate—through the activity of plate tectonics—into (Kosche, Bryan,(Kosche, the modern continents of Africa and South America. About 250 million years ago, Gondwana (containing the geologic beginnings of Florida) collided with another megacontinent called Laurasia (which contained the rest of future North America). The result was the supercontinent Pangea. When Pangea eventually broke up, about 230 million years ago, that special wedge of African bedrock that would be Florida, rifted apart from its tectonic plate of origin, and remained sutured instead to what we’ve come to know as the continent of North America. 200 Million Years of Calcium Carbonate Deposition It is upon these very old, African-born igneous and metamorphic basement rocks that the sedimentary rocks of the Florida Platform would start to accumulate. Thick layers of carbonate rock—predominantly limestones and dolostones composed of the mineral calcium carbonate— built up over the next 200 million years to create Florida’s flat-topped, “carbonate platform” structure. -
Mineral Resources of the Bull Mountain Wilderness Study Area, Garfield and Wayne Counties, Utah
Mineral Resources of the Bull Mountain Wilderness Study Area, Garfield and Wayne Counties, Utah U.S. GEOLOGICAL SURVEY BULLETIN 1751-B Chapter B Mineral Resources of the Bull Mountain Wilderness Study Area, Garfield and Wayne Counties, Utah By RUSSELL F. DUBIEL, CALVIN S. BROMFIELD, STANLEY E. CHURCH, WILLIAM M. KEMP, MARK J. LARSON, and FRED PETERSON U.S. Geological Survey JOHN T. NEUBERT U.S. Bureau of Mines U.S. GEOLOGICAL SURVEY BULLETIN 1751 MINERAL RESOURCES OF WILDERNESS STUDY AREAS- HENRY MOUNTAINS REGION, UTAH DEPARTMENT OF THE INTERIOR DONALD PAUL MODEL, Secretary U. S. GEOLOGICAL SURVEY Dallas L. Peck, Director UNITED STATES GOVERNMENT PRINTING OFFICE: 1988 For sale by the Books and Open-File Reports Section U.S. Geological Survey Federal Center Box 25425 Denver, CO 80225 Library of Congress Cataloging in Publication Data Mineral resources of the Bull Mountain Wilderness Study Area, Garfield and Wayne Counties, Utah. (Mineral resources of wilderness study areas Henry Mountains Region, Utah ; ch. B) (Studies related to wilderness) (U.S. Geological Survey bulletin ; 1751) Bibliography: p. Supt. of Docs, no.: I 19.3:1751-8 1. Mines and mineral resources Utah Bull Mountain Wilderness. 2. Bull Mountain Wilderness (Utah) I. Dubiel, Russell F. II. Series. III. Series: Studies related to wilderness wilderness areas. IV. Series: U.S. Geological Survey bulletin ; 1751-B. QE75.B9 no. 1751-B 557.3s 87-600433 [TN24.U8] [553'.09792'52] [TN24.C6] STUDIES RELATED TO WILDERNESS Bureau of Land Management Wilderness Study Areas The Federal Land Policy and Management Act (Public Law 94-579, October 21, 1976) requires the U.S.