DOCSLIB.ORG

PDF Viewing Archiving 300

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
PDF Viewing Archiving 300 Bulletin de la Société belge de Géologie T. 95 fasc. 4 pp. 257-280 Bruxelles 1986 Bulletin van de Belgische Vereniging voor Geologie V. 95 dee l 4 blz. 257-280 Brussel 1986 CONODONT SUCCESSION ACROSS THE TOURNAISIAN-VISJ;:AN BOUNDARY BEDS AT SALET, BELGIUM by Zdzislaw BELKA (*) and Eric GROESSENS (**) KEY WORDS Conodonta, Tournaisian, Visean, Boundary, Salet, Dinant Synclinorium, I l'HRODIJCT I OM, The taxonorny of the conodont This study offers a rev1s1on of genera as SiphonodeZZa, Gnathodus, PseudopoZyg­ the conodont fauna recovered frorn the nathus, ScaZiognathus, Mestognathus , that ex­ section called "Route de Salet" which is hibi t a great importance for the Lower exposed along the Molignée Valley, in a Carboniferous stratigraphy have recently small quarry and it continues along the been revised by SANDBERG et aZ. (1978), road to Salet (Text-figs 1-2). The pre­ LANE, SANBERG, ZIEGLER (1980), Helka cise location and accessibility of this (1983) and LANE & ZIEGLER (1983). New exposure is given by CONIL & GROESSENS concept of several species as well as (1974 : 24), GROESSENS (1975 : 45) and descriptions of new taxa stirnulated us to HANCE (1985). It is a classical and one re-investigate the conodon~ occurring in of the rnost important sections for the the classical sections of the Dinant Syn­ Lower Carboniferous stratigraphy. As a cl inoriurn. The purpose of this study is parastratotype section for the Lower also to atternpt an application, in the Viséan (CONIL, 1967) it attracted the Dinantian type area, of the prelirninary interest of many workers being the area standard conodont zonation proposed by of an intense search for microfossils LANE, SANDBERG & ZIEGLER (1980) for the (see HANCE, 1985). Several foraminiferal post- SiphonodeZZa interval. taxa (cf. CONIL & LYS, 1964) have been 0 5 10km Fig. 1 - General location map. Patterned area shows extent of the Carboniferous deposits in the Din~nt Synclinorium. ( *) Institute of Geology, University of Warsaw, Al. Zwirki i Wigury 93, 02-089 Warszawa (Poland). ( **) Geological Survey of Belgium, 13 rue Jenner, B-1040 Brussels (Belgium). 257 described from this exposure for the first grains. The Leffe facies extends land­ time and it is also a type locality for wards for many kilometers away from the two stratigraphically important conodont buildups (LEES & CONIL, 1980; LEES, 1982) species, DoUymae bouckaerti GROESSENS and and it always separates the latter from Eotaphrus buUyneki ( GROESSENS). The holoty­ the Molignée faciès. types of these conodonts are reillustrat­ ed- herein. The Calcaire de la Molignée forms the upper unit sampled for cono­ The section at Salet (Text- donts in the "Route de Salet" section. fig. 2), moreover, is a type section for The limestones are wackestones and lime two lithostratigraphical units of the mudstones with numerous shaly interbeds. classic Dinantian of Belgium, the Calcaire The composition of allochems is similar Noir de la Malignée (GROESSENS, 1975) and to that-of the Leffe facies, but from the the Calcaire de Salet (GROESSENS, CONIL & 'Bed 87 the increase of foraminifers in LEES, 1976). The base of the Moliniacian, place of bryozoans is noted to occur .. i.e. the stage of the Viséan, locally dis­ According to HANCE (1985 : 182), the lower tinguished in Belgium, was also defined part of the Calcaire de la Molignée at here at the Bed 52 (PAPROTH et al., 1983 : Salet reflects regressive conditions, 188) . whereas the Viséan transgression is indi­ cated much later by the first appearance The investigated conodont fauna of the foraminiferal fauna dominated by includes the raaterial collected and ori­ the Archaediscidae in the Bed 215. ginally described by GROESSENS (1971, 1975) and also conodonts obtained during additional recent sampling that produced CONODONT DISTRIBUTION, some new conodont occurrences. The sam­ ples were collected from the lower por­ Very closely sampling of long tion of the sequence only up to the Bed intervals in the "Route de Salet" section 285 where there occur slump structures provided substantial account of conodont at the top of the Calcaire de la Molignée succession in the late Tournaisian and (Text-fig. 2). early Viséan strata. Although the observ­ ed occurrences of the majority of cono­ dont species (Table 1) agree with their LITHOLOGY, recognized stratigraphie ranges (cf. LANE, SANDBERG & ZIEGLER, 1980), some species, At Salet, a 320 meter thick however, demonstrate new occurrences that section of the Lower Carboniferous carbo­ appear to be very significant for the nates is exposed, but only 130 m were phylogeny of these species and for the covered by this study. The investigated Lower Carboniferous conodont stratigraphy. portion of the section consists of three iithological units (Text-fig, 2) that The most remarkable is the first constitute proximal lateral equivalents appearance of Gnathodus texanus , a zonal of the Waulsortian facies (cf, LEES, marker of the texanus Zone. The lower 1984). range of this species was- known to start simultaneously with the extinction of The lowest unit is developed as Scaliognathus anchoraUs (LANE, SANDBERG & crinoidal and bryozoan packstones that are ZIEGLER, 1980 : Tab. 2; LANE & ZIEGLER, massive or interbedded with thin shales in 1983). In contrast, G, texanus occurs at the lower part of this unit. These sedi­ Salet just below the appearance of ments pass laterally into the Bayard fa­ Scaliognathus anchoralis europensis (Text-fig. cies considered to be located in the 3). Similary to that, the ranges of both neighborhood of the Waulsortian buildups. species are recently noted to overlap in the Dinantian rocks of southwestern Ire­ Overlying is the Leffe facies, land (THORNBURY, 1985) and VARKER & which comprises well-bedded wackestones SEVASTOPULO (1985 : Tab. 6) indicated and packstones that contain various allo­ that for the Lower Carboniferous conodonts chems and first of all peloids, bioclasts in Britain and Ireland the range of of echinoderms and bryozoans, and coated Gnathodus texanus extends from the middle s N , Mohgnee. 1 1 0 w Ol 0 0 - 0 10 2om Bioul 22 Bioul 8 ~ 1 Fig. 2 - The lower part of the "Route de Salet" section sampled for conodonts. Black triangle indicates the position of the Tournaisian-Viséan boundary. Bed numeration after Overlau et Conil, 1965. 258 part of the anchoraZis Zone. The record of conodont zones in the Tn3a-V1b inter­ of G. texanus at Salet does not appear to val has also been outlined at that time. be a freak of nature. It is well docu­ These zones were incorporated later by mented in our fauna by transitional forms AUSTIN (1973) into his proposa! of the (see Table 1 and Pl. 6, Figs 7-9) showing Dinantian conodont zonation suggested the evolutionary relation between Gnathoclus for application in Europe. semiglaber and Gnathodus texanus. The former species gave rise to G. texanus by the re­ The conodont zonal scheme for duction of the inner parapet and platform the Lower Carboniferous currently used ornamentation. The reduction trend of in Belgium was established by GROESSENS morphological changes in the conodont (1975). Recently, it was in part modif­ platform, as late Tournaisian gnathodon­ ied to produce some new detailed sub­ tan Pa elements display (BELKA 1984 : fig. divisions (PAPROTH et al., 1983 : Tab. 10; 1985b) is also exemplified by the 2). Although the usefulness of this origin of Gnathodus pseudosemigZaber from G. scheme for the Belgian stratigraphy cuneiforms. This is indicated by transi- "'remains unquestionable, i ts global appli­ tional forms (Pl. 5, Figs. 4-9) as well as cation proves to be limited. This is by ontogenetic development of small spe­ because some species used for definition cimens of G. pseudosemiglaber which recapi­ of subzones (e. g. Dollymae hassi, Dollymae tulate a character of G. cuneiformis. To bouckaerti, Eotaphrus bultyncki) are rather show phyletic sequence of above mentioned rare out of Belgium while other index species of Gnathodus, the transitional forms as Polygnathus communis carinus and forms are separately presented in Table 1, Eotaphrus burlingtonensis appear in Belgium but they are not considered herein to be significantly later than their lower the separate species. ranges recognized in many Lower Carboni­ ferous sections (see LANE, SANDBERG & The other anomaly which is ZIEGLER, 1980). Undoubtedly, this is worthy to note, is the record of Pseudo­ why the framework of the world-wide pre­ polygnathus pinnatus. This species (Pl. 2, limina ry standard conodont zonation Fig. 9) yields earlier appearance relative (SANDBERG et al., 1978; LANE, SANDBERG to Pseudopolygnathus oxypageus, Dollymae & ZIEGLER, 1980) differs considerably bouckaerti, and Eotaphrus bultyncki. It is from that recognized in Belgium by much earlier than was recognized by LANE, GROESSENS (1975). SANDBERG & ZIEGLER (1980 : Tab. 2) but identical range of Ps. pinnatus reflecting, The investigated section yields most probably, an actual stratigraphie all diagnostic forms which allowed to range of this species is recorded from identify all the conodont zones of Upper Britain and Ireland (VARKER & SEVASTOPULO Tournaisian and Lower Viséan strata sensu 1985: Tab. 6). GROESSENS (1975), i. e. the carinus Zone, the anchoralis Zone, and the beckmanni The genus Scaliognathus is repre­ Zone (Text-fig. 3), and also to correlate sented by Sc. praeanchoralis (Pl. 1, Fig. this section with other successions of 7), Sc. anchoralis fairchildi (Pl. 1, Figs, Belgium (GROESSENS, 1975; GROESSENS, 8-11) and Sc. anchoralis europensis (Pl. 2, CONIL & LEES, 1976). Fig. 2). LANE & ZIEGLER (1983 : 205-206) suggested that Sc. a. europensis probably Of special interest in this developed from Sc. a. fairchildi although classical section, however, was also to the appearance of Sc. a. fairchildi before test up the preliminary standard cono­ Sc. a. europensis was not documented at that dont zonation. The results we received time. Now, such an evidence is recorded. show the scheme is to be corrected. In the "Route de Salet" section Sc. a, fairchildi cames 1. 5 m be fore Sc.
Load more

Recommended publications
  • Geologic Map and Upper Paleozoic Stratigraphy of the Marble Canyon Area, Cottonwood Canyon Quadrangle, Death Valley National Park, Inyo County, California
    Geologic Map and Upper Paleozoic Stratigraphy of the Marble Canyon Area, Cottonwood Canyon Quadrangle, Death Valley National Park, Inyo County, California By Paul Stone, Calvin H. Stevens, Paul Belasky, Isabel P. Montañez, Lauren G. Martin, Bruce R. Wardlaw, Charles A. Sandberg, Elmira Wan, Holly A. Olson, and Susan S. Priest Pamphlet to accompany Scientific Investigations Map 3298 2014 U.S. Department of the Interior U.S. Geological Survey Cover View of Marble Canyon area, California, showing dark rocks of Mississippian Indian Springs Formation and Pennsylvanian Bird Spring Formation overlying light rocks of Mississippian Santa Rosa Hills Limestone in middle distance. View is southeast toward Emigrant Wash and Tucki Mountain in distance. U.S. Department of the Interior SALLY JEWELL, Secretary U.S. Geological Survey Suzette M. Kimball, Acting Director U.S. Geological Survey, Reston, Virginia: 2014 For more information on the USGS—the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment—visit http://www.usgs.gov or call 1–888–ASK–USGS For an overview of USGS information products, including maps, imagery, and publications, visit http://www.usgs.gov/pubprod To order this and other USGS information products, visit http://store.usgs.gov Suggested citation: Stone, P., Stevens, C.H., Belasky, P., Montanez, I.P., Martin, L.G., Wardlaw, B.R., Sandberg, C.A., Wan, E., Olson, H.A., and Priest, S.S., 2014, Geologic map and upper Paleozoic stratigraphy of the Marble Canyon area, Cottonwood Canyon quadrangle, Death Valley National Park, Inyo County, California: U.S. Geological Survey Scientific Investigations Map 3298, scale 1:24,000, 59 p., http://dx.doi.org/10.3133/sim3298.
    [Show full text]
  • Conodont Biostratigraphy and Paleoecology of The
    CONODONT BIOSTRATIGRAPHY AND PALEOECOLOGY OF THE LOWER DEVONIAN HELDERBERG GROUP OF VIRGINIA by Elizabeth G. Cook Thesis submitted to the Graduate Faculty of the Virginia Polytechnic Institute and State University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE in Geological Sciences APPROVED: Dr. C. G. Tillman, Chairman -------------~-""'\-----7----- --------------------~-~------- Dr. W. D.)Lowry Dr. J. F. Read May, 1981 Blacksburg, Virginia ACKNOWLEDGEMENTS I thank Dr. Tillman for proposing the problem and for continued help and encouragement during the research and writing of the thesis. Dr. J. F. Read and W. D. Lowry offered constructive criticism of the ' ' manuscript. Thanks are also due to William Seaton for assistance with some of the sampling and to Gordon Love for assistance with the photography. I also acknowledge financial support from the Department of Geological Sciences at Virginia Polytechnic Institute and State University. E. G. C. ii TABLE OF CONTENTS Page ACKNOWLEDGEMENTS ii LIST OF FIGURES vi LIST OF TABLES vii INTRODUCTION • 1 LOCATION OF SECTIONS 3 METHODS 5 STRUCTURAL SETTING • 7 STRATIGRAPHY • 8 Introduction • 8 Previous Work 8 Description of Formations in the Study Area 10 Keyser Formation • • 10 New Creek Limestone 12 Healing Springs Sandstone 12 Corriganville Limestone 13 Licking Creek Formation 13 Regional Correlation 14 DEPOSITIONAL ENVIRONMENTS 17 Introduction • • 17 Keyser Formation 17 Laminated limestone lithofacies 17 Nodular limestone lithofacies 20 Cross-stratified sand lithofacies 22 iii Page Shale lithofacies 23 Deeper water facies 23 Swmnary of Keyser facies in the study area • 24 New Creek Limestone 24 Healing Springs Sandstone 25 Corriganville Limestone 26 Licking Creek Formation 26 Cherry Run Member 26 Little Cove Member .
    [Show full text]
  • 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.
    [Show full text]
  • Catalog of Type Specimens of Invertebrate Fossils: Cono- Donta
    % {I V 0> % rF h y Catalog of Type Specimens Compiled Frederick J. Collier of Invertebrate Fossils: Conodonta SMITHSONIAN CONTRIBUTIONS TO PALEOBIOLOGY NUMBER 9 SERIAL PUBLICATIONS OF THE SMITHSONIAN INSTITUTION The emphasis upon publications as a means of diffusing knowledge was expressed by the first Secretary of the Smithsonian Institution. In his formal plan for the Insti­ tution, Joseph Henry articulated a program that included the following statement: "It is proposed to publish a series of reports, giving an account of the new discoveries in science, and of the changes made from year to year in all branches of knowledge." This keynote of basic research has been adhered to over the years in the issuance of thousands of titles in serial publications under the Smithsonian imprint, com­ mencing with Smithsonian Contributions to Knowledge in 1848 and continuing with the following active series: Smithsonian Annals of Flight Smithsonian Contributions to Anthropology Smithsonian Contributions to Astrophysics Smithsonian Contributions to Botany Smithsonian Contributions to the Earth Sciences Smithsonian Contributions to Paleobiology Smithsonian Contributions to Zoology Smithsonian Studies in History and Technology In these series, the Institution publishes original articles and monographs dealing with the research and collections of its several museums and offices and of profes­ sional colleagues at other institutions of learning. These papers report newly acquired facts, synoptic interpretations of data, or original theory in specialized fields. These publications are distributed by mailing lists to libraries, laboratories, and other in­ terested institutions and specialists throughout the world. Individual copies may be obtained from the Smithsonian Institution Press as long as stocks are available.
    [Show full text]
  • STRATIGRAPHY and STRUCTURE of the SOUTHERN SULPHUR SPRING RANGE, EUREKA COUNTY, NEVADA Redacted for Privacy Abstract Approved: U G
    AN ABSTRACT OF THE THESES OF Joseph T. Lipka IC for the degree ofMaster of Sciencein Geology presented on April 17, 1987 Title:STRATIGRAPHY AND STRUCTURE OF THE SOUTHERN SULPHUR SPRING RANGE, EUREKA COUNTY, NEVADA Redacted for Privacy Abstract approved: U G. Johnson Early Paleozoic limestones and dolomites of the shallow shelf transitional facies belt were mapped in the southern Sulphur Spring Range, Eureka County, Nevada.The four youngest units in the map area are in fault contact with the Lower Devonian rocks and wereprobably transported westward, along a low-angle normal fault. The minoirlal dolomites of the Hanson Creek Formation, dated as latest Ordovician in the map area, were deposited in a low-energy lagoon.Overlying the Hanson Creek Formation, with a gradational contact, is the lower member ofthe Lone Mountain Dolomite, a probable reef complex.The exposed thickness of the lower Lone Mountain Dolomite is estimated to be 250 feet.The Lower Devonian Old Whalen Member of the Lone Mountain Dolomite is composed of well-bedded, alternating brown and gray dolomites.The repetition of rock types in the Old Whalen Member indicates recurring shallow marine environments on a broad carbonate platform.The Old Whalen is estimated to be 1400 feet thick.Directly overlying the Old Whalen Member, is the Kobeh Member of the Mc Colley Canyon Formation.Rocks of the Mc Colley Canyon Formation were deposited on a shallow shelf under normal marine conditions.The mid-Lower Devonian Kobeh Member is sparsely to abundantly fosciliferous and varies from a peloidal wackestone to a peloidal sandy wackestone to a sandy peloidal packstone.The thickness is 276 feet.Overlying the Kobeh Member are the abundantly fossiliferous beds of the lower part of the Bartine.
    [Show full text]
  • Late Devonian Conodont Fauna of the Gümüflali Formation
    TurkishJournalofEarthSciences (TurkishJ.EarthSci.),Vol.9, 2000,pp.69-89. Copyright©TÜB‹TAK LateDevonianConodontFaunaoftheGümüflali Formation,theEasternTaurides,Turkey fiENOLÇAPKINO⁄LU&‹SMETGED‹K KaradenizTeknikÜniversitesi,JeolojiMühendisli¤iBölümü,TR-61080Trabzon,TURKEY (e-mail:[email protected]) Abstract: TheLateDevonianGümüflaliformationoftheeasternTauridesisaterrigenous-carbonaterocksequence about600mthick,consistingmainlyofquartzsandstone,quartzsiltstone,shale,andcarbonaterocks. Palaeontologicandsedimentologicdatamainlyindicateashallowsubtidaldepositionalenvironment.Thissequence generallyrepresentstheshallow-waterpolygnathid-icriodidbiofacies,andcontainsconodontfaunasthatrange fromtheUpperfalsiovalis ZoneintotheUpperpraesulcata Zone.However,theydonotcorrelatewelltotheLate Devonianstandardconodontzonationbecauseofthelackofzonallydiagnosticspeciesandtheirregularvertical distributionsofthepresenttaxa.Herein,54taxabelongingtoninegeneraaredescribedandillustratedfromthe studiedsection.Icriodusadanaensis,Icriodusfekeensis,andPolygnathusantecompressus arethenewlydescribed species. KeyWords: LateDevonian,conodont,Gümüflaliformation,easternTaurides,Turkey. GümüflaliFormasyonu’nun(Do¤uToroslar,Türkiye)GeçDevoniyen KonodontFaunas› Özet: Do¤uToroslarboyuncayayg›nyüzeylemeleriolanGeçDevoniyenyafll›Gümüflaliformasyonu,yaklafl›k600 metrekal›nl›¤aulaflanbirk›r›nt›l›-karbonatkayadizisidir.Litolojisinibafll›cakuvarskumtafl›,kuvarsmiltafl›,fleylve karbonatkayalar›n›noluflturdu¤ububiriminpaleontolojikvesedimantolojiközellikleri,çökelmeninbafll›cas›¤,gel- gitalt›ortamdageliflti¤ineiflareteder.Konodontfaunas›genelliklek›y›-yak›n›polygnathid-icriodidbiyofasiyesini
    [Show full text]
  • Ian, and the Early Upper Devonian Some Icriodus Species Such As
    ©Geol. Bundesanstalt, Wien; download unter www.geologie.ac.at ian, and the early Upper Devonian some Icriodus species such as /. fusiformis, I. culicellus, I. rectiro- stratus, I. retrodepressus, I. regularicrescens, I. obliquimarginatus and /. subterminus have a wide or so­ metimes nearly cosmopolite dispersion in different magnafacies areas (type Ardenno-Rhenish and Her- cynian-Bohemian) and there is no marked difference in the earliest occurrence of each species. This means that the geographical dispersion of at least some Icriodus species was due primarily to good com­ munication seaways which could be modified in the course of time and not to very specialised local fa­ des factors. Having in mind the SEDDON and SWEET model for conodonts, the dominance of Icrio­ dus in shallow water shelf environment implies no restriction in geographical dispersion. Particularly in this environment, anomalies in the vertical distribution ofPolygnathus taxa, e. g.,-P. serotinus, P. lingui- formis div. subspecies, P. cooperi cooperi can be noticed. Reexamination of Late Pennsylvanian and Early Permian Conodont Apparatuses Using Clustering Techniques. By T. R. CARR Department of Geology and Geophysics, University of Wisconsin, Madison, Wisconsin 53706, USA. Conodont faunas containing easily identified Pa elements assignable to the genera Diplognathodus and Hindeodus have been reported from Upper Pennsylvanian and Lower Permian strata of North Ame­ rica. If the seximembrate model for the apparatus of each genus is correct, the remaining elements should also be present. However, previous investigators have normally considered ramiform elements which might be assignable to the two genera as attributable to species of either the Idiognathodus— Streptognathodus plexus or Adetognathus.
    [Show full text]
  • Taxonomy, Phylogeny and Biogeography of the Late Famennian Conodont Genus Mashkovia
    Journal of Micropalaeontology, 17: 119-124. 0262-821)</98$10.00 0 1998 British Micropalaeontological Society. Taxonomy, phylogeny and biogeography of the late Famennian conodont genus Mashkovia ZDZISLAW BELKA Geologisch-Palaontologisches Institut, Universitat Tubingen, Sigwartstr. 10, D - 72076 Tiibingen, Germany. ABSTRACT - Mashkovia is one of the provincial conodonts which developed during late Famennian time in the cratonic regions of Russia. In this study, the taxonomy of this genus is revised, based on diagnostic characters of the Pa elements, such as the morphology of the anterior part of the platform, the ornamentation and the shape of the secondary keels. As a consequence, four species, including M. silesiensis n. sp. now discovered in Upper Silesia of southern Poland, are distinguished. The apparent absence of Mashkovia from North America, Variscan Europe, Australia and Africa cannot be simply explained by using temperature or other global climatic factors as a reason for the provincialism. Currents and/or local palaeoecologic factors were probably more important in controlling the distribution of these conodonts. J. Micropalaeontol. 17(2): 119-124, December 1998. INTRODUCTION This paper summarizes the present knowledge of the late Famennian conodont genus Mashkovia, which is a real rarity among the Devonian conodont elements. Up to now, only about 80 specimens of Pa elements of Mashkovia have been found throughout the world. The multi-element composition of its apparatus is unknown. As at present conceived, Mashkovia contains four species, three of which, M. simakovi (Gagiev, 1979), M. similis (Gagiev, 1979), and M. tamarae Kononova & Pazuhin, 1983, are known exclusively from Russia. The fourth one, M. silesiensis n.
    [Show full text]
  • Conodonts Frorn the Genesee Formation in Western New York
    ·U.S: BUREAu Of MINES P.O. BOX 550 IUNEAU, AlASK} OQ9( ' Conodonts frorn the Genesee Formation in Western New York GEOLOGICAL SURVEY PROFESSIONAL PAPER 1032-B \ Conodonts from the Genesee Formation in Western New York By JOHN W. HUDDLE, assisted by JOHN E. REPETSKI STRATIGRAPHY AND CONODONTS OF THE GENESEE FORMATION (DEVONIAN) IN WESTERN AND CENTRAL NEW YORK GEOLOGICAL SURVEY PROFESSIONAL PAPER 1032-B Conodonts from the Genesee Formatz"on z"n western New York, first descrz"bed by G.]. Hz"nde z"n 1879 and W. L. Bryant z·n 1921, are redescrz"bed, and the b£ostrat£graph£c zones are determz"ned UNITED STATES GOVERNMENT PRINTING OFFICE,WASHINGTON 1981 UNITED STATES DEPARTMENT OF THE INTERIOR JAMES G. WATT, Secreta·ry GEOLOGICAL SURVEY Doyle G. Frederick, Acting Director Library of Congress Cataloging in Publication Data Huddle, John Warfield, 1907-1975 Conodonts from the Genesee Formation in western New York. (Stratigraphy and conodonts of the Genesee Formation (Devonian) in western and central New York) (Geological Survey professional paper ; 1032-B) Bibliography: p. Supt. of Docs. No.: I 19.16:1032-B 1. Conodonts. 2. Paleontology-Devonian. 3. Paleontology-New York (State) I. Title. II. Series. III. Series: United States. Geological Survey. Professional paper ; 1032-B. QE899.H83 557.3'08s [562] 77-608125 For sale by the Distribution Branch, U.S. Geological Survey, 604 South Pickett Street, Alexandria, VA 22304 FOREWORD After John Huddle's death in late November 1975, I was asked to serve as author's representative in the completion of this report. In September 1975, Huddle had completed.
    [Show full text]
  • (Upper Devonian) Conodont Zonation: Revised Global Standard
    Famennian (Upper Devonian) conodont zonation: revised global standard CLAUDIA SPALLETTA, MARIA CRISTINA PERRI, D. JEFFREY OVER & CARLO CORRADINI The revision of the Famennian part of the “Late Devonian Standard Conodont Zonation” is based on the in-equivalence between biozones and time, and the rejection of the presumed single phyletic concept on which the previous zonation was based. It is also intended to simplify the zonation, eliminating the zonal groups named after only one taxon, and biozones that are defined by a Last Appearance Datum (LAD). The proposed revision is largely based on the zonation proposed by Ziegler and Sandberg (1990) and is for the most part correlatable using the same zonal markers. Modifica- tions have only been made when strictly necessary, as the aim of the proposal is to maintain the stability of over 50 years of studies. The 22 zones constituting the revised zonation are defined by the First Appearance Datum (FAD) of species or subspecies that have a well-established stratigraphic range and wide geographic distribution. Each zone is named after the taxon for which the FAD defines the lower boundary. For each zone an association of other species useful for its identification is listed. • Key words: conodonts, Upper Devonian, Famennian, biostratigraphy, biozonation. SPALLETTA, C., PERRI, M.C., OVER, D.J. & CORRADINI, C. 2017. Famennian (Upper Devonian) conodont zonation: re- vised global standard. Bulletin of Geosciences 92(1), 31–57 (9 figures, 1 table). Czech Geological Survey, Prague. ISSN 1214-1119. Manuscript received July 27, 2016; accepted in revised form February 9, 2017; published online March 27, 2017; issued March 31, 2017.
    [Show full text]
  • Conodont Biofacies in a Ramp to Basin Setting (Latest Devonian and Earliest Carboniferous) in the Rocky Mountains of Southernmost Canada and Northern Montana
    U. S. DEPARTMENT OF THE INTERIOR U. S. GEOLOGICAL SURVEY Conodont biofacies in a ramp to basin setting (latest Devonian and earliest Carboniferous) in the Rocky Mountains of southernmost Canada and northern Montana by Lauret E. Savoy1 and Anita G. Harris 2 Open-File Report 93-184 This report is preliminary and has not been reviewed for conformity with Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. \ Department of Geology and Geography, Mount Holyoke College, South Hadley, MA 01075 2 U.S. Geological Survey, Reston, VA 22092 1993 TABLE OF CONTENTS ABSTRACT 1 INTRODUCTION 2 LITHOSTRATIGRAPHY AND DEPOSITIONAL SETTING 2 CONODONT BIOSTRATIGRAPHY AND BIOFACIES 8 Palliser Formation 8 Exshaw Formation 13 Banff Formation 13 Correlative units in the Lussier syncline 15 PALEOGEOGRAPfflC SETTING 17 CONCLUSION 23 ACKNOWLEDGMENTS 23 REFERENCES CITED 24 APPENDIX 1 38 FIGURES 1. Index map of sections examined and major structural features of the thrust and fold belt 3 2. Correlation chart of Upper Devonian and Lower Mississippian stratigraphic units. 4 3. Selected microfacies of the Palliser Formation. 5 4. Type section of Exshaw Formation, Jura Creek. 6 5. Lower part of Banff Formation, North Lost Creek. 7 6. Conodont distribution in Palliser and Exshaw formations, Inverted Ridge. 9 7. Conodont distribution in upper Palliser and lower Banff formations, Crowsnest Pass. 11 8. Conodont distribution in upper Palliser, Exshaw, and lower Banff formations, composite Jura Creek - Mount Buller section. 12 9.
    [Show full text]
  • Conodonts of the Barnett Formation of Texas
    Conodonts of the Barnett Formation of Texas GEOLOGICAL SURVEY PROFESSIONAL PAPER 243-F Conodonts of the Barnett Formation of Texas By WILBERT H. MASS A SHORTER CONTRIBUTION TO GENERAL GEOLOGY, 1952, PAGES 69-94 GEOLOGICAL SURVEY PROFESSIONAL PAPER 243-F UNITED STATES GOVERNMENT PRINTING, OFFICE, WASHINGTON : 1953 UNITED STATES DEPARTMENT OF THE INTERIOR Douglas McKay, Secretary GEOLOGICAL SURVEY W. E. Wrather, Director For sale by the Superintendent of Documents, U. S. Government Printing Office Washington 25, D. C. - Price 55 cents (paper cover) CONTENTS Page Abstract... _-________-______________________________-___.._______-_______-___----__-.__-----------_-_---..------ 69 Introduction-__________________________________________________________________________________________________ 69 Age of the Barnett formation__________________._________________-______.___-..-----_-_---------_-----__-_-— - 69 Conodont faunalzones.___________________________________.._____________________-___-_--_---_---_-------_---_-_ 70 Lower conodont faunal zone_________.._______________..________-.._____--_--_--_--__------_-----_--------_--- 71 Upper conodont faunal zone____._____________-_______.__________-_____________-__--_-----__--_--___..---_-_ 71 Measured sections.__________________________________________________________________________________________ 73 Locality register. _________________________________________________________________ — __________ — _________ 76 Systematic descriptions...._____________________________________________________________________________________
    [Show full text]