DOCSLIB.ORG

A Thesis Submitted to the Faculty of the in Partial Fulfillment of The

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

The Conodont Biostratigraphy of the Black Prince Limestone (Pennsylvanian) of Southeastern Arizona Item Type text; Thesis-Reproduction (electronic) Authors Barrie, Kathleen Ann Publisher The University of Arizona. Rights Copyright © is held by the author. Digital access to this material is made possible by the Antevs Library, Department of Geosciences, and the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author or the department. Download date 06/10/2021 04:56:02 Link to Item http://hdl.handle.net/10150/240113 THE CON ODONT BIOSTRATIGRAPHYOF THE BLACK PRINCE LIMESTONE(PENNSYLVANIAN) OF SOUTHEASTERN ARIZONA by Kathleen Ann Barrie A Thesis Submitted to the Faculty of the DEPARTMENT OF GE OS CIEN CE S In Partial Fulfillment of the Requirements For the Degree of MASTER OF SCIENCE In the Graduate College THE UNIVERSITY OF ARIZONA 1975 STATEMENT BY AUTHOR This thesis has been submitted in partial fulfillment of re- quirements for an advanced degree at The University of Arizona and is deposited in the University Library to be made available to borrowers under rules of the Library. Brief quotations from this thesis are allowable without special permission, provided that accurate acknowledgment of source is made. Requests for permission for extended quotation from or reproduction of this manuscript in whole or in part may be granted by the head of the major department or the Dean of the Graduate College when in his judg- ment the proposed use of the material is in the interests of scholar- ship. In all other instances, however, permission must be obtained from the author. SIGNED: APPROVAL BY THESIS DIRECTOR This thesis has been approved on the date shown below: 27(?7s- DIETMAR SCHULZACHER ' Date Assistant Professor of Geosciences ACKNOWLEDGMENTS I would like to thank the many people who helped me in the completion of my thesis. Special thanks are due to Dr. Dietmar Schumacher, thesis director, who gave me guidance and help in every phase of this study. Thanks are also due to the other members of my thesis committee, Drs. Donald L. Bryant and Joseph F. Schreiber, Jr. Fellow graduate students helped in many ways and I would like to thank them, especially William C. Sulkoske. Dr. Richard Lane, Amoco Research Center, Tulsa, Oklahoma, helped in the identification of some of the conodonts and in the interpretation of the biostratigraphy. Dr. David LeMone of the Department of Geology, University of Texas at El Paso helped in the identification of the carbonates.Thanks are due to Dr. Walter Roser, Department of Metallurgical Engineering, University of Texas at El Paso,and Drs.Thomas Teska and Michael Drake,Department of Planetary Sciences,The University of Arizona, who provided free instrument time and assistance in obtaining the scan- ning electron microscope photomicrographs. Some financial aid for this research was provided by the Max- well Short Scholarship. Encouragement and financial support were given by my parents, Mr. and Mrs. Ferdinand J. Barrie. iii TABLE OF CONTENTS Page LIST OF ILLUSTRATIONS vi ABSTRACT vii INTRODUCTION 1 Methods 1 Location 2 Geology and Stratigraphy 4 Previous Work 7 Arizona Conodont Studies 7 Morrowan Conodont Biostratigraphy 7 BIOSTRATIGRAPHY OF THE BLACK PRINCE LIMESTONE 11 Neognathodus bassleri Zone 11 Idiognathodus sinuosis- Streptognathodus antee c ce ntricu s Zone 13 Idiognathoides convexus Zone 13 Spathognathodus coloradoensis -Neognathodus columbiensis Fauna 14 TEMPORAL RELATIONSHIPS WITHIN THE LOWER PENNSYLVANIAN OF SOUTHEASTERN ARIZONA 15 DEPOSITIONAL ENVIRON MENT 18 CONCLUSIONS 20 SYSTEMATIC PALEONTOLOGY 21 Genus Adetognathus Lane,1967 22 Adetognathus lautus (Gunnell),1933 22 Adetognathus spathus (Dunn),1966 24 Genus Idiognathodus Gunnell, 1931 25 Idiognathodus sinuosis Ellison & Graves, 1941 25 Genus Idiognathoide s Harris & Hollingsworth, 1933 26 Idiognathoides convexus (Ellison & Graves),1941 2 6 Idiognathoides noduliferus (Willson & Graves),1941... 27 Idiognathoides s inuatu s Harris & Hollingsworth, 1933 .. 28 Genus Neognathodus Dunn, 1970a 29 Neognathodus bassleri (Harris & Hollingsworth), 1933.. 29 Neognathodus columbiensis (Stibane),1967 30 iv V TABLE OF CONTENTS -- Continued Page Genus Rachistognathus Dunn, 1966 32 Rachistognathus muricatus (Dunn),1965 32 Genus Spathognathodus Branson & Mehl, 1941 33 Spathognathodus coloradoensis Murray & Chronic, 1965. 33 Spathognathodus minutus (Ellison),1941 34 Genus Streptognathodus Stauffer & Plummer, 1932 35 Streptognathodus anteeccentricus Dunn, 1966... 35 Streptognathodu s expansus Igo & Koike, 1964 36 Strepto nathodus suberectus Dunn, 1966 37 Genus A, sp. A 38 REFERENCES 40 LIST OF ILLUSTRATIONS Figure Page 1. Location map of measured sections of the Black Prince Limestone 3 2. Some late Paleozoic formations of southeastern Arizona. ... 5 3. Comparison of some Morrowan conodont zonations 9 4. Conodont zones and ranges of important conodonts in the Black Prince Limestone 12 5. Temporal relationships within the Lower Pennsylvanian of southeastern Arizona 16 6. Stratigraphic sections and distribution of conodonts in the Black Prince Limestone in pocket 7. Adetognathus,Idiognathodus,Idiognathoide s, Neognathodus 23 8. Neognathodus,Rachistognathus,Spathognathodus, Streptognathodus, Genus A 31 vi ABSTRACT The Black Prince Limestone of southeastern Arizona has been assigned to the Morrowan on the basis of several long -ranging fossils. Since these were not especially diagnostic, the exact time represented by the Black Prince within the Morrowan was uncertain. To date the Black Prince more precisely, six sections were systematically sampled for conodonts. The condonts found, especially Neognathodus bassleri, Rachistognathus muricatus,Idiognathoides convexus,and Spatho- qnathodus coloradoensis,indicate a middle Morrowan to early Derryan age for the Black Prince in the study area. Four conodont zones can be recognized: the Neognathodus bassleri Zone,the Idiognathodus sinuosis.- Streptognathodus anteeccen- tricus Zone,the Idiognathoide s convexes Zone,and the Spathognathodus coloradoensis -Neognathodus columbiensis Zone.These zones compare favorably with the zonation previously established in the type Morrowan. This biostratigraphic evidence suggests that the hiatus between the Black Prince and Horquilla Limestones increases in magnitude from southeastern to south -central Arizona. The Black Prince represents a sequence of tidal flat and shallow subtidal carbonate deposits. Mudstones and sparsely fossiliferous wackestones with low fossil diversity and abundance characterizethe tidal -flat facies. Grainstone s,packstones, and fossiliferous wacke- stones with high fossil diversity and abundance characterizethe shal- low subtidal facies. vii INTRODUCTION This study was undertaken to determine more preciselythe age of the Black Prince Limestone. Conodonts were chosen for this study because they are relatively abundant throughout the formation.Another advantage in using conodonts is that there exists a highly refined cono- dont zonation for the Morrowan in the central and western United States. The conodont zones established in this study can then be compared to the standard zones in the rest of the country. Fusulinids,which are used to date most of the Pennsylvanian and Permian formations in Arizona, cannot be used to date the Black Prince because their occurrence is rare in the formation. Those fu su linid s present are primitive and long ranging. There are also few diagnostic macrofossils in the Black Prince. In this study an attempt was also made to determine the length of the hiatus between the Black Prince and the overlying Horquilla and Naco formations.This will help to clarify the stratigraphic relationships between the formations. Finally, an effort was made to determine what environmental controls, if any, there were on conodont distribution within the Black Prince. Methods Six sections were measured using a Brunton compass and Jacob staff. Samples were collected from every bed. The sample size varied 1 2 from approximately 2 to 4 kg.At least 1 kg of each sample was dis- solved (at least partially) in 10 percent acetic acid. The dried residue was then separated in heavy liquid, tetrabromoethane , as described by Collinson (1963).The heavy residue was then picked for conodonts. Rock descriptions were based on thin sections and polished hand specimens. Dunham`s (1962) classification was used for rock type. All photomicrographs were taken with Polaroid Type 55 P/N film using a scanning electron microscope. Location For this study six sections of the Black Prince Limestone in southeastern and south -central Arizona were measured and sampled for conodonts.These sections are indicated by number on the locationmap (Fig. 1). 1.Superior: NE1/4SW1/4 sec. 36 and SE 1 /4NW1 /4 to SW1 /4 SE 1/4 sec. 36, T.1 S.,R. 12 E.,Superior quadrangle, Pinal County. 2.Ekiminzin Wash: NE 1 /4NE 1/4 sec. 36 to SW1/4SE1/4sec. 25, T. 5 S., R. 16 E., Saddle Mountain quadrangle, PinalCounty. 3.Johnny Lyon Hills: SE 1 /4SE 1/4 sec. 16 to SW1 /4sec. 15, T. 14 S.,R. 21 E.,Dragoon quadrangle, Cochise County. 4.Dry Canyon,VIihetsone Mountains: NW1 /4sec. 23 to NW1 /4 sec. 22, T.19 S., R. 19 E., Benson quadrangle,Cochise County. 3 N .-/ i z \ PHOENIX I Drn o E J I ( h_ ` i _...11 i \ N I \ - o 2. I \z I i D SO 100 KM `o ___r I. L_. _ _ - I I \ i i ó ucsoN I o 1 3. L L IIMMIMM, A 5. i BISBEE 1 0 6.o Figure 1.Location map of measured sections of the Black Prince Limestone 4 5.Swisshelm Mountains: SE1/4SW1 /4 sec. 35, T. 19 S., R. 27 E.,Swisshelm Mountain quadrangle , Cochise County. 6.Naco Hills: SE1/4SW1/4 sec. 35 to SW1/4SW1 /4SE 1 /4SE 1/4 sec. 26, T. 23 S .,R. 23 E.,Bisbee quadrangle, Cochise County. Geology and Stratigraj y Gilluly, Cooper, and Williams (19 54) named the Black Prince Limestone for exposures near the Black Prince mine in the Little Dragoon Mountains.Because of metamorphism, the type section was measured at Gunnison Peak 4.5 miles to the southeast. Additional sections were mea- sured in the Johnny Lyon Hills and the Little Dragoon Mountains.
Recommended publications
  • CONODONT BIOSTRATIGRAPHY and ... -.: Palaeontologia Polonica

    CONODONT BIOSTRATIGRAPHY and ... -.: Palaeontologia Polonica

    CONODONT BIOSTRATIGRAPHY AND PALEOECOLOGY OF THE PERTH LIMESTONE MEMBER, STAUNTON FORMATION (PENNSYLVANIAN) OF THE ILLINOIS BASIN, U.S.A. CARl B. REXROAD. lEWIS M. BROWN. JOE DEVERA. and REBECCA J. SUMAN Rexroad , c.. Brown . L.. Devera, 1.. and Suman, R. 1998. Conodont biostrati graph y and paleoec ology of the Perth Limestone Member. Staunt on Form ation (Pennsy lvanian) of the Illinois Basin. U.S.A. Ill: H. Szaniawski (ed .), Proceedings of the Sixth European Conodont Symposium (ECOS VI). - Palaeont ologia Polonica, 58 . 247-259. Th e Perth Limestone Member of the Staunton Formation in the southeastern part of the Illinois Basin co nsists ofargill aceous limestone s that are in a facies relati on ship with shales and sandstones that commonly are ca lcareous and fossiliferous. Th e Perth conodo nts are do minated by Idiognathodus incurvus. Hindeodus minutus and Neognathodu s bothrops eac h comprises slightly less than 10% of the fauna. Th e other spec ies are minor consti­ tuents. The Perth is ass igned to the Neog nathodus bothrops- N. bassleri Sub zon e of the N. bothrops Zo ne. but we were unable to co nfirm its assignment to earliest Desmoin esian as oppose d to latest Atokan. Co nodo nt biofacies associations of the Perth refle ct a shallow near- shore marine environment of generally low to moderate energy. but locali zed areas are more variable. particul ar ly in regard to salinity. K e y w o r d s : Co nodo nta. biozonation. paleoecology. Desmoinesian , Penn sylvanian. Illinois Basin. U.S.A.
  • 03-Alekseev and Goreva (Neognathodus).P65

    03-Alekseev and Goreva (Neognathodus).P65

    Lucas, S.G., et al. eds., 2013, The Carboniferous-Permian Transition. New Mexico Museum of Natural History and Science, Bulletin 60. 1 THE CONODONT NEOGNATHODUS BOTHROPS MERRILL, 1972 AS THE MARKER FOR THE LOWER BOUNDARY OF THE MOSCOVIAN STAGE (MIDDLE PENNSYLVANIAN) ALEXANDER S. ALEKSEEV1 AND NATALIA V. GOREVA 2 1 Department of Paleontology, Geological Faculty, Moscow State University, Russia, email: aaleks@geol. msu.ru; 2 Geological institute of Russian Academy of Science, Moscow, Russia, email: [email protected] Abstract—The Moscovian Stage constitutes the Middle Pennsylvanian Series of the Carboniferous System, but a biostratigraphic marker and GSSP for it have not yet been designated. The exact position of the Moscovian boundary cannot be defined properly because in the type area the basal Vereian unconformably overlies the Mississippian limestone or the alluvial and lagoonal Aza Formation of the uppermost Bashkirian. The Task Group to establish a GSSP close to the existing Bashkirian-Moscovian boundary suggested several potential markers among foraminifers and conodonts, but the search for a marker near traditional base of the global Moscovian Stage has stalled. It may be more productive to search for FADs in the lower Moscovian, above the traditional base, to designate the lower boundary of the stage. Relatively rich Vereian and Kashirian conodont assemblages have been recovered from the southwest Moscow Basin, as well as from the Oka-Tsna Swell. The most complete information on the distribution of conodonts in the Vereian- Kashirian boundary interval was obtained from the Yambirno section (Oka-Tsna Swell). The greatest change in conodont assemblages does not occur near the level of the traditional base of the Moscovian, but stratigraphically higher.
  • Conodonts in Ordovician Biostratigraphy

    Conodonts in Ordovician Biostratigraphy

    View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Archivio istituzionale della ricerca - Università di Modena e Reggio Emilia 1 Conodonts in Ordovician biostratigraphy STIG M. BERGSTRÖM AND ANNALISA FERRETTI Conodonts in Ordovician biostratigraphy The long time interval after Pander’s (1856) original conodont study can in terms of Ordovician conodont biostratigraphic research be subdivided into three periods, namely the Pioneer Period (1856-1955), the Transition Period (1955-1971), and the Modern Period (1971-Recent). During the pre-1920s, the few published conodont investigations were restricted to Europe and North America and were not concerned about the potential use of conodonts as guide fossils. Although primarily of taxonomic nature, the pioneer studies by Branson & Mehl, Stauffer, and Furnish during the 1930s represent the beginning of the use of conodonts in Ordovician biostratigraphy. However, no formal zones were introduced until Lindström (1955) proposed four conodont zones in the Lower Ordovician of Sweden, which marks the end of the Pioneer Period. Because Lindström’s zone classification was not followed by similar work outside Baltoscandia, the time interval up to the late 1960s can be regarded as a Transition Period. A milestone symposium volume, entitled ‘Conodont Biostratigraphy’ and published in 1971, 2 summarized much new information on Ordovician conodont biostratigraphy and is taken as the beginning of the Modern Period of Ordovician conodont biostratigraphy. In this volume, the Baltoscandic Ordovician was subdivided into named conodont zones whereas the North American Ordovician succession was classified into a series of lettered or numbered Faunas. Although most of the latter did not receive zone names until 1984, this classification has been used widely in North America.
  • Pennsylvanian Boundary Unconformity in Marine Carbonate Successions

    Pennsylvanian Boundary Unconformity in Marine Carbonate Successions

    University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Dissertations & Theses in Earth and Atmospheric Earth and Atmospheric Sciences, Department of Sciences Summer 6-2014 ORIGIN AND DISTRIBUTION OF THE MISSISSIPPIAN – PENNSYLVANIAN BOUNDARY UNCONFORMITY IN MARINE CARBONATE SUCCESSIONS WITH A CASE STUDY OF THE KARST DEVELOPMENT ATOP THE MADISON FORMATION IN THE BIGHORN BASIN, WYOMING. Lucien Nana Yobo University of Nebraska-Lincoln, [email protected] Follow this and additional works at: http://digitalcommons.unl.edu/geoscidiss Part of the Geochemistry Commons, Geology Commons, Sedimentology Commons, and the Stratigraphy Commons Nana Yobo, Lucien, "ORIGIN AND DISTRIBUTION OF THE MISSISSIPPIAN – PENNSYLVANIAN BOUNDARY UNCONFORMITY IN MARINE CARBONATE SUCCESSIONS WITH A CASE STUDY OF THE KARST DEVELOPMENT ATOP THE MADISON FORMATION IN THE BIGHORN BASIN, WYOMING." (2014). Dissertations & Theses in Earth and Atmospheric Sciences. 59. http://digitalcommons.unl.edu/geoscidiss/59 This Article is brought to you for free and open access by the Earth and Atmospheric Sciences, Department of at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Dissertations & Theses in Earth and Atmospheric Sciences by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. ORIGIN AND DISTRIBUTION OF THE MISSISSIPPIAN – PENNSYLVANIAN BOUNDARY UNCONFORMITY IN MARINE CARBONATE SUCCESSIONS WITH A CASE STUDY OF THE KARST DEVELOPMENT ATOP THE MADISON FORMATION IN THE BIGHORN BASIN, WYOMING. By Luscalors Lucien Nana Yobo A THESIS Presented to the Faculty of The Graduate College at the University of Nebraska In Partial Fulfillment of Requirements For the Degree of Master of Science Major: Earth and Atmospheric Sciences Under the Supervision of Professor Tracy D.
  • Six Charts Showing Biostratigraphic Zones, and Correlations Based on Conodonts from the Devonian and Mississippian Rocks of the Upper Mississippi Valley

    Six Charts Showing Biostratigraphic Zones, and Correlations Based on Conodonts from the Devonian and Mississippian Rocks of the Upper Mississippi Valley

    14. GS: C.2 ^s- STATE OF ILLINOIS DEPARTMENT OF REGISTRATION AND EDUCATION SIX CHARTS SHOWING BIOSTRATIGRAPHIC ZONES, AND CORRELATIONS BASED ON CONODONTS FROM THE DEVONIAN AND MISSISSIPPIAN ROCKS OF THE UPPER MISSISSIPPI VALLEY Charles Collinson Alan J. Scott Carl B. Rexroad ILLINOIS GEOLOGICAL SURVEY LIBRARY AUG 2 1962 ILLINOIS STATE GEOLOGICAL SURVEY URBANA 1962 CIRCULAR 328 I I co •H co • CO <— X c = c P o <* CO o CO •H C CD c +» c c • CD CO ft o e c u •i-CU CD p o TJ o o co CO TJ <D CQ x CO CO CO u X CQ a p Q CO *» P Mh coc T> CD *H O TJ O 3 O o co —* o_ > O p X <-> cd cn <d ^ JS o o co e CO f-l c c/i X ex] I— CD co = co r CO : co *H U to •H CD r I .h CO TJ x X CO fc TJ r-< X -P -p 10 co C => CO o O tJ CD X5 o X c c •> CO P <D = CO CO <H X> a> s CO co c %l •H CO CD co TJ P X! h c CD Q PI CD Cn CD X UJ • H 9 P CD CD CD p <D x c •—I X Q) p •H H X cn co p £ o •> CO o x p •>o C H O CO "P CO CO X > l Ct <-c . a> CD CO X •H D. CO O CO CM (-i co in Q.
  • Sequence Biostratigraphy of Carboniferous-Permian Boundary

    Sequence Biostratigraphy of Carboniferous-Permian Boundary

    Brigham Young University BYU ScholarsArchive Theses and Dissertations 2019-07-01 Sequence Biostratigraphy of Carboniferous-Permian Boundary Strata in Western Utah: Deciphering Eustatic and Tectonic Controls on Sedimentation in the Antler-Sonoma Distal Foreland Basin Joshua Kerst Meibos Brigham Young University Follow this and additional works at: https://scholarsarchive.byu.edu/etd Part of the Physical Sciences and Mathematics Commons BYU ScholarsArchive Citation Meibos, Joshua Kerst, "Sequence Biostratigraphy of Carboniferous-Permian Boundary Strata in Western Utah: Deciphering Eustatic and Tectonic Controls on Sedimentation in the Antler-Sonoma Distal Foreland Basin" (2019). Theses and Dissertations. 7583. https://scholarsarchive.byu.edu/etd/7583 This Thesis is brought to you for free and open access by BYU ScholarsArchive. It has been accepted for inclusion in Theses and Dissertations by an authorized administrator of BYU ScholarsArchive. For more information, please contact [email protected], [email protected]. Sequence Biostratigraphy of Carboniferous-Permian Boundary Strata in Western Utah: Deciphering Eustatic and Tectonic Controls on Sedimentation in the Antler-Sonoma Distal Foreland Basin Joshua Kerst Meibos A thesis submitted to the faculty of Brigham Young University in partial fulfillment of the requirements for the degree of Master of Science Scott M. Ritter, Chair Brooks B. Britt Sam Hudson Department of Geological Sciences Brigham Young University Copyright © 2019 Joshua Kerst Meibos All Rights Reserved ABSTRACT Sequence Biostratigraphy of Carboniferous-Permian Boundary Strata in Western Utah: Deciphering Eustatic and Tectonic Controls on Sedimentation in the Antler-Sonoma Distal Foreland Basin Joshua Kerst Meibos Department of Geological Sciences, BYU Master of Science The stratal architecture of the upper Ely Limestone and Mormon Gap Formation (Pennsylvanian-early Permian) in western Utah reflects the interaction of icehouse sea-level change and tectonic activity in the distal Antler-Sonoma foreland basin.
  • VOLUME 33 December 2017

    VOLUME 33 December 2017

    VOLUME 33 December 2017 Volume 33 Table of Contents EXECUTIVE’S COLUMN…………………………………………………………………..…….. 2 OBITUARY……………………………………………………………………………………..…5 SCCS REPORTS………………………………………………………………………………….7 ANNUAL REPORT TO ICS FOR 2016-2017…………………………………………………..….7 TASK GROUP REPORTS FOR 2016-2017 AND WORK PLANS FOR 2017 FISCAL YEAR………….11 Report of the task group to establish a GSSP close to the existing Viséan-Serpukhovian boundary…………11 Report of the task group to establish a GSSP close to the existing Bashkirian-Moscovian boundary………16 Report of the task group to establish the Moscovian-Kasimovian and Kasimovian-Gzhelian boundaries…....18 SCCS DOCUMENTS (CONTRIBUTIONS BY MEMBERS)…………………………………...……21 SHALLOW-WATER SIPHONODELLIDS AND DEFINITION OF THE DEVONIAN-CARBONIFEROUS BOUNDARY…………………………………………………………………………………….21 REPORT FOR PROGRESS FOR 2017 ACTIVITIES IN THE CANTABRIAN MOUNTAINS, SPAIN AND THE AMAZONAS BASIN, BRAZIL……………………………………………...………………26 TAXONOMIC AND STRATIGRAPHIC PROBLEMS CONCERNING THE CONODONTS LOCHRIEA SENCKENBERGICA NEMIROVSKAYA, PERRET & MEISCHNER, 1994 AND LOCHRIEA ZIEGLERI NEMIROVSKAYA, PERRET & MEISHCNER, 1994-CONSEQUENCES FOR DEFINING THE VISÉAN- SERPUKHOVIAN BOUNDARY………………………………………………………………………………...28 PROGRESS ON THE VISÉAN-SERPUKHOVIAN BOUNDARY IN SOUTH CHINA AND GERMANY……………………………………………………………………………………..35 POTENTIAL FOR A MORE PRECISE CORRELATION OF THE BASHKIRIAN AMMONOID AND FORAMINIFERAL ZONES IN THE SOUTH URALS…………………………………………..……42 CHEMOMETRICS AND CARBONIFEROUS MEDULLOSALEAN FRONDS: IMPLICATIONS FOR CARBONIFEROUS PHYTOSTRATIGRAPHY…………………………………………………...…45
  • Conodont Faunas from Portugal and Southwestern Spain

    Conodont Faunas from Portugal and Southwestern Spain

    v. d. Boogaard, Middle Devonian conodonts from Portugal, Scripta Geol. 13 (1972) 1 Conodont faunas from Portugal and southwestern Spain Part 1. A Middle Devonian fauna from near Montemor-o-Novo M. van den Boogaard Van den Boogaard, M. Conodont faunas from Portugal and southwestern Spain. Part 1. A Middle Devonian fauna from near Montemor-o-Novo. - Scripta Geol., 13: 1-11, 6 figs., 1 pl., Leiden, December 1972. Conodonts of Couvinian age are recorded from limestone beds incorporated in a sedimentary sequence which was previously considered to be Late Devonian or Early Carboniferous in age. M. van den Boogaard, Rijksmuseum van Geologie en Mineralogie, Hooglandse Kerkgracht 17, Leiden, The Netherlands. Introduction 1 Geological setting 4 Comments on the faunas 4 Stratigraphie results 8 References 9 Introduction The stratigraphy of the Palaeozoic rocks of southern Portugal and southwestern Spain is still not well known in detail, one of the reasons being the scarcity of fossils. Therefore conodonts obtained from local limestone lenses have given welcome information (Höllinger, 1959; van den Boogaard, 1963). Occasionally, new outcrops of limestone have been encountered by geologists presently at work in that region, and during the last few years I have received several samples of these limestones for investigation. Since further limestone outcrops may be dis- covered and samples thereof sent to me, and since there is no stratigraphical control, I decided to publish the results separately but under the general heading 2 v. d. Boogaard, Middle Devonian conodonts from Portugal, Scripta Geol. 13 (1972) Fig. 1. Map showing the locality of Pedreira da Engenharia (= P.E.).
  • Proceedings of the Indiana Academy of Science 83

    Proceedings of the Indiana Academy of Science 83

    Proceedings of the Indiana Academy of Science 83 (1993) Volume 102 p. 83-91 CONODONTS FROM COAL BALLS IN THE SPRINGFIELD COAL MEMBER OF THE PETERSBURG FORMATION (DESMOINESIAN, PENNSYLVANIAN) IN SOUTHERN INDIANA Carl B. Rexroad Indiana Geological Survey 611 North Walnut Grove Bloomington, Indiana 47405 ABSTRACT: A well-preserved and moderately diverse conodont faunule was recovered from five coal balls in the Springfield Coal Member of the Petersburg Formation from Peabody Coal Com- pany's Eby Pit, Lynnville Mine, in Warrick County, Indiana. The presence of Neognathodus roundyi and the other species recorded in this study is compatible with the middle Desmoinesian age of the Springfield. Idioprioniodus conjunctus is the most ecologically diagnostic of the conodonts and suggests organic-rich, quiet water with a low pH, which in turn suggests that the conodonts lived in a salt-water marsh bordered on one side by coal swamps and on another by near-normal marine waters. Apparently coal balls had multiple origins, and the origin of the conodont-bearing ones is uncertain. INTRODUCTION Because marine fossils are commonly associated with plant fossils in some coal balls, it is not surprising that conodonts have been reported from them. A half-dozen well-pre- served conodonts from Pennsylvanian coal balls from three different States were figured by Mamay and Yochelson (1962), but no other conodonts were figured; therefore, the overall conodont content in coal balls is unknown. To better understand the distribution of conodonts and their paleoecologic impor- tance in coal balls, samples were processed from coal balls of the middle Desmoinesian Springfield Coal Member of the Petersburg Formation from the Eby Pit of Peabody Coal Company's Lynnville Mine (SW'/4 , SWA, NE'A, Sec.
  • Conodont Stratigraphy and Palaeontology of the Namurian of Belgium

    Conodont Stratigraphy and Palaeontology of the Namurian of Belgium

    Mémoires pour servir à l'explication Toelichtende Verhandelingen des Cartes géologiques et minières voor de Geologische kaart en Mijnkaart de la Belgique van België MÉMOIRE No 10 VERHANDELING Nr 10 CONODONT STRATIGRAPHY AND PALAEONTOLOGY OF THE NAMURIAN OF BELGIUM BY A. C. HIGGINS and J. BOUCKAERT Department of Geology Service Géologique de Belgique University of Sheffield MINISTÈRE DES AFFAIRES ÉCONOMIQUES MINISTERIE VAN ECONOMISCHE ZAKEN ADMINISTRATION DES MINES BESTUUR VAN HET MIJNWEZEN Service Géologique de Belgique Aardkundige Dienst van België 13, Rue Jenner, 13 13, Jennerstraat, 13 BRUXELLES 4 BRUSSEL 4 Mém. Expl. Cartes Géologiques et Minières de la Belgique. 1968 N° 10 64 p 6 pl. Toelicht. Verhand. Geologische kaart en Mijnkaart van België. SERVICE GÉOLOGIQUE DE BELGIQUE MÉMOIRE N° 10 CONODONT STRATIGRAPHY AND PALAEONTOLOGY OF THE NAMURIAN OF BELGIUM BY A. C. HIGGINS and J. BOUCKAERT Department of Geology Service Géologique de Belgique University of Sheffield BRUXELLES IMPRIMERIE HAYEZ, s. p. r. 4, rue Fin 1968 SUMMARY The sequence of conodont faunas in the Namurian of Belgium is described and compared with faunas of the same age in North America, western Europe and Japan. The faunas exhibit major changes within the Namurian in the Chokerian {HI), Alportian (H2) and Kinderscoutian (Ri) sub-stages involving the appearance of new species and genera and the disappearance of many pre-existing ones. These changes take place at approximately the position of the Mississippian- Pennsylvanian boundary in North America. The palaeontology of these faunas is dealt with in detail and 47 species and sub-species have been recognised amongst which Angulodus simplex, Lonchodina bischoffi, Idiognathoides sulcata sulcata, Idiognathoides sulcata parva, Idiognathoides minuta, Streptognathodus lateralis and Gnathodus bilineatus bollandensis are considered new.
  • Paper Number: 4008

    Paper Number: 4008

    Paper Number: 4008 Characterization of conodont biostratigraphy in the basal Moscovian boundary interval at the Naqing section, Loudian, Guizhou, South China Lambert, L. L.1, Qi, Y. P.2, Nemyrovska, T. I.3, Wang, X. D.2, Hu, K. Y.2, and Wang, Q. L.2 1Geological Sciences, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249, USA [email protected] 2State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 210008, PR China 3Institute of Geological Sciences, National Academy of Sciences of Ukraine, O. Gonchar Str. 55-b, 01601 Kiev, Ukraine ___________________________________________________________________________ A major criterion for selecting a Global Stratotype Section and Point (GSSP) is to demonstrate depositional continuity. Depositional continuity is most often accepted where there is a transitional morphocline from an ancestral species to its descendent. The GSSP is then selected to correspond with the phylogenetic first occurrence of the descendent species. Ideally, strata elsewhere are subsequently correlated with the GSSP using the local first appearance of the descendent species, or by other taxa associated with the GSSP providing supplementary biostratigraphic data. Any other stratigraphic methods can be used for correlation once the GSSP has been ratified by the International Union of Geological Sciences Commission on Stratigraphy. Multiple conodont lineages with complete transitional morphologies characterize the Bashkirian- Moscovian boundary interval in the Naqing section. The presence of all these chronoclines through the section demonstrates depositional continuity at Naqing, and provides numerous possible conodont- based levels available for selecting a basal Moscovian GSSP.
  • Lithostratigraphy, Microlithofacies, And

    Lithostratigraphy, Microlithofacies, And

    Lithostratigraphy, Microlithofacies, and Conodont Biostratigraphy and Biofacies of the Wahoo Limestone (Carboniferous), Eastern Sadlerochit Mountains, Northeast Brooks Range, Alaska U. S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 1568 j^^^fe^i^^t%t^^S%^A^tK-^^ ^.3lF Cover: Angular unconformity separating steeply dipping pre-Mississippian rocks from gently dipping carbonate rocks of the Lisburne Group near Sunset Pass, eastern Sadlerochit Mountains, northeast Brooks Range, Alaska. The image is a digital enhancement of the photograph (fig. 5) on page 9. Lithostratigraphy, Microlithofacies, and Conodont Biostratigraphy and Biofacies of the Wahoo Limestone (Carboniferous), Eastern Sadlerochit Mountains, Northeast Brooks Range, Alaska By Andrea P. Krumhardt, Anita G. Harris, and Keith F. Watts U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 1568 Description of the lithostratigraphy, microlithofacies, and conodont bio stratigraphy and biofacies in a key section of a relatively widespread stratigraphic unit that straddles the Mississippian-Pennsylvanian boundary UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1996 U.S. DEPARTMENT OF THE INTERIOR BRUCE BABBITT, Secretary U.S. GEOLOGICAL SURVEY GORDON P. EATON, Director For sale by U.S. Geological Survey, Information Services Box 25286, Federal Center, Denver, CO 80225 Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government. Published in the Eastern Region, Reston, Va. Manuscript approved for publication June 26, 1995. Library of Congress Cataloging in Publication Data Krumhardt, Andrea P. Lithostratigraphy, microlithofacies, and conodont biostratigraphy and biofacies of the Wahoo Limestone (Carboniferous), eastern Sadlerochit Mountains, northeast Brooks Range, Alaska / by Andrea P. Krumhardt, Anita G. Harris, and Keith F.