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Orta Toroslar'da Konodont Biy Ostratigrafisi(1 )
Türkiye Jeoloji Kurumu Bülteni, e. 20, 35-48, Şubat 1977 Bulîetin of the Geölogical Boclety of Turkey, v. 20, 35-48, February 1977 Orta Toroslar'da konodont biy ostratigrafisi(1 ) Conodontbiostratigra/phy in the Middle Taurus ÎSMET GEDİK Jeoloji Bölümü, Karadeniz Teknik Üniversitesi, Trabzon ÖZ: Çalışılan bölgede, Kambriyen-Triyas arasına ait konodont faunası saptanmış ve kısaca tanıtılmıştır. Metamorfik Alan- ya Masifinin bir nap şeklinde Sedre Triyas'mm üzerine geldiği ve bunun da bir tektonik pencere olarak görüldüğü görü- şüne varılmıştır. Hadimopanella oezgueli n. gen. n. sp. (incertae sedis) ve üç yeni konodont türü bulunmuştur. ABSTRACT: in the area studied Cambrian to Triassie systems are distinguished by the use of conodonts and their fauna is deseribed briefly. it is believed that the metamorphic Alanya massif overlays the Sedre Triassie as a nappe, forming a teetonic window. Hadimopanella oezgueli n. gen. n. sp. (İncertae sedis) and three new conodont speeies are established. (1) Bu yazı Türkiye Jeoloji Kurumu 30. Bilimsel Kurultayında bildiri olarak sunulmuştur. 36 GEDÎK GİRİŞ ve Monod, 1970). İçlerinde bazı trilobit lanmasmdon oluşan ve kalınlığı 1000 m parçalarına rastlanmıştır. Üste doğru kil yi aşan Seydişehir Formasyonuna geçti- Bu çalışma, özellikle son 20 yılda oranı gittikçe artarak, yaklaşık 50 m ği görülür. Bu formasyonun ilk 50 m lik büyük stratigrafik önem kazanan ve ge- kalınlığındaki kırmızımsı - morumsu, alt düzeylerinde bulunan kireçtaşı mer- niş çapta jeolojik formasyonların korre- yumrulu kireçtaşlarına geçilir. Bu dü- ceklerinden elde eddlen lasyonunda kullanılan konodontlardan zey içinde bol olarak Conocoryphe, Oneotodus tenu4s yararlanarak, ülkemizin bir bölgesinin Öoryneocochus, vb. gibi Orta Kambriyen stratigrafisini biraz daha aydınlığa ka- Fumishina furnishi yaşındaki tribolitlere ve akrotretid bra- Hertzima bisulcata vuşturmak ve dolayısiyle jeolojik yapısı- kiyopodlara rastlanılmıştır. -
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. -
1 Revision 2 1 K-Bentonites
1 Revision 2 2 K-Bentonites: A Review 3 Warren D. Huff 4 Department of Geology, University of Cincinnati, Cincinnati, OH 45221 USA 5 Email: [email protected] 6 Keywords: K-bentonite, bentonite, tephra, explosive volcanism, volcanic ash 7 Abstract 8 Pyroclastic material in the form of altered volcanic ash or tephra has been reported and described 9 from one or more stratigraphic units from the Proterozoic to the Tertiary. This altered tephra, 10 variously called bentonite or K-bentonite or tonstein depending on the degree of alteration and 11 chemical composition, is often linked to large explosive volcanic eruptions that have occurred 12 repeatedly in the past. K-bentonite and bentonite layers are the key components of a larger group of 13 altered tephras that are useful for stratigraphic correlation and for interpreting the geodynamic 14 evolution of our planet. Bentonites generally form by diagenetic or hydrothermal alteration under 15 the influence of fluids with high Mg content and that leach alkali elements. Smectite composition is 16 partly controlled by parent rock chemistry. Studies have shown that K-bentonites often display 17 variations in layer charge and mixed-layer clay ratios and that these correlate with physical 18 properties and diagenetic history. The following is a review of known K-bentonite and related 19 occurrences of altered tephra throughout the time scale from Precambrian to Cenozoic. 20 Introduction 21 Volcanic eruptions are often, although by no means always, associated with a profuse output 22 of fine pyroclastic material, tephra. Tephra is a term used to describe all of the solid material 23 produced from a volcano during an eruption (Thorarinsson, 1944). -
59/PDF Version
http://www.nhm.ac.uk/hosted_sites/bms Newsletter of Micropalaeontology ISSN 0140-6730ISSN bms NumberNumber 5959 EditedEdited byby PhilPhil DonoghueDonoghue BBrriittisishh MiMiccroparopallaaeeononttoollooggiiccaall SSoocciieettyy Registered as a Charity No 284013 society business Editorial The ritual list of publications requiring reviewers follows; any prospective reviewers should get in touch t has been some time since the last issue of the with me by telephone or email, but please bear in mind newsletter and I am sure that some of you have my forthcoming change of address. Best wishes to all. been wondering why issue 59 did not hit your I Arthur, W. 1997: The origin of animal body plans: a doormat sometime during September or October. At the May meeting of the BMS Committee it was decided study in evolutionary developmental biology. that the date of publication of the newsletter should be Cambridge University Press, 339pp. set back until after the AGM such that it could convey Bartels, C., Briggs, D. E. G. & Brassel, G. 1998: The news of that meeting. So here it is, better late than fossils of the Hunsrück Slate: marine life in the never (although I would argue that it is bang-on time, Devonian. Cambridge Paleobiology Series 3, Cam- but then I would, wouldn’t I?). bridge University Press, 309pp. Although the newsletter has been distributed in Johns, M. J., Barnes, C. R. & Orchard, M. J. 1997: electronic format through the BMS website for some Taxonomy and biostratigraphy of Middle and Late time, this is the first issue to also be available elec- Triassic elasmobranch ichthyoliths from northeast- tronically in PDF (Portable Document Format), also ern British Columbia. -
CONODONTS of the MOJCZA LIMESTONE -.: Palaeontologia Polonica
CONODONTS OF THE MOJCZA LIMESTONE JERZY DZIK Dzik, J. 1994. Conodonts of the M6jcza Limestone. -In: J. Dzik, E. Olemp ska, and A. Pisera 1994. Ordovician carbonate platform ecosystem of the Holy Cross Moun tains. Palaeontologia Polonica 53, 43-128. The Ordovician organodetrital limestones and marls studied in outcrops at M6jcza and Miedzygorz, Holy Cross Mts, Poland, contains a record of the evolution of local conodont faunas from the latest Arenig (Early Kundan, Lenodus variabilis Zone) to the Ashgill (Amorphognathus ordovicicus Zone), with a single larger hiatus corre sponding to the subzones from Eop/acognathus pseudop/anu s to E. reclinatu s. The conodont fauna is Baltic in general appearance but cold water genera , like Sagitto dontina, Scabbardella, and Hamarodus, as well as those of Welsh or Chinese af finities, like Comp/exodus, Phragmodus, and Rhodesognathu s are dominant in par ticular parts of the section while others common in the Baltic region, like Periodon , Eop/acognathus, and Sca/pellodus are extremely rare. Most of the lineages continue to occur throughout most of the section enabling quantitative studies on their phyletic evolut ion. Apparatuses of sixty seven species of thirty six genera are described and illustrated. Phyletic evolution of Ba/toniodus, Amorphognathu s, Comp/exodus, and Pygodus is biometrically documented. Element s of apparatu ses are homolog ized and the standard notation system is applied to all of them. Acodontidae fam. n., Drepa nodus kie/censis sp. n., and D. santacrucensis sp. n. are proposed . Ke y w o r d s: conodonts, Ordovici an, evolut ion, taxonomy. Jerzy Dzik, Instytut Paleobiologii PAN, A/eja Zwirk i i Wigury 93, 02-089 Warszawa , Poland. -
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. -
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. -
On Some Occurrences of Diplognathodus in Carboniferous Strata of Western Europe and North Africa
v.d. Boogaard, Diplognathodus from W. Europe & N. Africa, Scripta Geol., 69 (1983) On some occurrences of Diplognathodus in Carboniferous strata of Western Europe and North Africa M. van den Boogaard Boogaard, M. van den. On some occurrences of Diplognathodus in Carboniferous strata of Western Europe and North Africa. - Scripta Geol., 69: 19-29, 1 fig., 1 pl., October 1983. The occurrence is reported of Diplognathodus coloradoensis, D. orphanus and D. ellesmerensis in some localities in Western Europe and one locality in North Afri- ca. M. van den Boogaard, Rijksmuseum van Geologie en Mineralogie, Hooglandse Kerkgracht 17, 2312 HS Leiden, The Netherlands. Introduction 19 Localities 20 Palaeontology 23 Concluding remarks 25 References 27 Introduction Species of the genus Diplognathodus may be useful for stratigraphie correlation of Carboniferous strata because some of them are probably stratigraphically short-ranging (e.g. D. coloradoensis according to Landing & Wardlaw, 1981, pp. 1255-1256). Because still little is known about the distribution of représentants of the genus outside North America I thought it useful to relate the few occur• rences of D. coloradoensis, D. orphanus and D. ellesmerensis I encountered during my investigation of Carboniferous limestones from Western Europe and North Africa. 20 v.d. Boogaard, Diplognathodus from W. Europe & N. Africa, Scripta Geol., 69 (1983) Acknowledgements Thanks for placing the samples at my disposal are due to Drs C.F. Winkler Prins, H.A. van Adrichem Boogaert, M.J.M. Bless, and A.C. van Ginkel. The informa• tion concerning the Cinderhill sample given by Dr W.H.C. Ramsbottom is much appreciated. Thanks also go to Mr J.G.M. -
Biostratigraphic Problems of Morrowan and Derryan (Atokan) Strata in the Pennsylvanian System of Western United States
Biostratigraphic problems of Morrowan and Derryan (Atokan) strata in the Pennsylvanian System of western United States D. L. DUNN Gulf Research and Development Company, H.T.S.C., P.O. Box 36506, Houston, Texas 77036 ABSTRACT CONODONT ZONES Although both foraminiferal and conodont zonations have been Lane and Straka (1974) proposed a conodont zonation (Fig. 1) proposed for Lower and Middle Pennsylvanian strata, the current for Arkansas and Oklahoma utilizing slightly different terminology state of the art indicates that several proposed Morrowan cono- from that proposed by Lane and others (1971). They did not rec- dont zones and one important Derryan(?) fusulinid zone (21) and ognize the Streptognathodus expansus—S. suberectus, the the ranges of several important associated conodonts and Idiognathodus humerus—I. sinuosis, and the Streptognathodus fusulinids are in question. The conodont zones in question are the parvus—Adetognathus spathus Zones proposed earlier (Dunn, Gnathodus girtyi simplex, the Streptognathodus expansus-S. sub- 1970b), apparently because they did not believe these zones to be erectus, the Idiognathodus humerus—I. sinuosis, and the adequately documented in northeastern Oklahoma (Lane and Streptognathodus parvus— Adetognathus spathus Zones of Dunn Straka, 1974, p. 31). Lane and Straka (1974) have failed to recog- and the Idiognathodus sinuosis, I. klapperi, and 1. convexus nize the significance of some of the most important upper Mor- Zones of Lane and Straka. The conodonts whose ranges are in rowan index fossils now known — namely, those of the first and question are Gnathodus girtyi simplex, Rhachistognathus, third zones cited above — and, consequently, have demonstrated muricatus, Declinognathodus noduliferus, Adetognathus spathus, inconsistency in the correlation of Morrowan strata and in the Neognathodus bassleri bassleri, and Idiognathoides convexus. -
Jujuy Province, Argentina
Updated stratigraphy and biostratigraphy of the Sierra de Cajas / Espinazo del Diablo (Upper Cambrian – Lower Arenig), Jujuy province, Argentina Guillermo F. Aceñolaza1 1 INSUGEO – Facultad de Ciencias Naturales e I.M.L., Universidad Nacional de Tucumán, Miguel Lillo 205, 4000 Tucumán. E-mail: [email protected] Palabras clave: Estratigrafía. Bioestratigrafía. Cambro-Ordovícico. Cajas. Jujuy. Argentina. Key Words: Stratigraphy. Biostratigraphy. Cambrian-Ordovician. Cajas. Jujuy. Argentina. Introduction The Sierra de Cajas / Espinazo del Diablo is a classical locality for the Cambro- Ordovician transition in the Cordillera Oriental of Jujuy province, NW Argentina (Fig. 1). While Cambro-Ordovician strata characterize the Sierra de Cajas, Cretaceous/Tertiary sandstones and shales westwards flanked by highly fossiliferous Arenig shales and sandstones are displayed in the Espinazo del Diablo. The first references to the geological aspects of the area start in colonial times, with early data during the XVII century referring to the mineralization associated to the Aguilar Granite. Lead and zinc sedex deposit associated to the granite is been exploited nowadays by El Aguilar Mining Co since the 1950 ´s (e.g. Brown 1941, 1962; Spencer, 1950, Ahlfeld, 1955; Schalamuk and De Barrio, 2002). Among some of the pioneer papers dealing with the stratigraphy and paleontology of the area, Kobayashi (1936, 1937), Harrington (1938), Harrington and Leanza (1957), Aceñolaza (1966, 1968), Méndez (1973) and Benedetto (1977) introduced the potentiality of the area. Many other papers also focused the locality during the last 20 years, fact that has provided a fairly good amount of biostratigraphic information, that allowed the usage of the Sierra de Cajas as a reference section for the Cambrian-Ordovician boundary in the Central Andean basin (eg. -
Pander Society Newsletter
Pander Society Newsletter Compiled and edited by R. J. Aldridge, M. A. Purnell, and A. Thomas DEPARTMENT OF GEOLOGY UNIVERSITY OF LEICESTER LEICESTER LE1 7RH, UK Number 36 May 2004 www.conodont.net INTRODUCTORY REMARKS fter six very rewarding years, this is the last NEW CHIEF PANDERER Pander Society Newsletter to be presented by the Acurrent team. This makes it, perhaps, fitting for Dick Aldridge writes: In January 2004, I recognised that, us to begin our annual introduction by looking back to having entered my sixth year as President of the Pander see how the Society has fared over this interval. The Society ('Chief Panderer'), it was really past my time to answer is, we have certainly all been very active. The hand over to a successor. There is no stipulated length of period started with a bang (pun too bad to be intended) service in this office, but we have tried to make five in 1998 with a Pander Society meeting in Columbus, years more-or-less the norm, in order to share the Ohio, with the themes ‘Conodont evidence for impacts honour and the chore. Following traditional procedure, I and extinctions’ and ‘Hot topics in conodont asked three active members of the Society, Phil biochronology’. The same year, ECOS VII was held in Donoghue, Catherine Girard and Jeff Over, to act as a Italy, continuing the very successful pattern of these nomination committee, and asked anyone who wished events. Annual Pander Society meetings have continued to make a nomination or to contribute thoughts or in North America in each succeeding year, comments about the succession to contact them. -
Maquetación 1
ISSN (print): 1698-6180. ISSN (online): 1886-7995 www.ucm.es /info/estratig/journal.htm Journal of Iberian Geology 33 (2) 2007: 163-172 Sephardiellinae, a new Middle Triassic conodont subfamily Sephardiellinae, una nueva subfamilia de conodontos del Triásico Medio P. Plasencia1, F. Hirsch2, A. Márquez- Aliaga1 1Instituto Cavanilles de Biodiversidad y Biología Evolutiva and Departamento de Geología. Universidad de Valencia, Dr. Moliner 50, 46100 Burjassot, Spain. [email protected], [email protected] 2Naruto University of Education, Naruto, Tokushima,Tokushima, Japan. [email protected] Received: 26/02/06 / Accepted: 09/10/06 Abstract Sephardiellinae (nov. subfam.) encompasses a Middle Triassic Gondolleloid lineage that originated in the Sephardic realm, west- ernmost shallow Neotethys, from where, in the course of the Ladinian and earliest Carnian, some of its species spread to the world oceans, before extinction as a result of the Carnian salinity crisis. It is composed of two genera, Sephardiella and Pseudofurnishius. Differential criteria in its septimembrate apparatus are the basal cavity structure of P1 element and morphological variations in the P2 and S3 elements. Keywords: Conodonts, Middle Triassic, Sephardiellinae, Sephardic Realm, Neotethys. Resumen La nueva subfamilia Sephardiellinae está comprendida dentro del linaje de Gondolellidae del Triásico Medio y se originó en el Dominio Sefardí, la parte más occidental del Neotetis. Durante el Ladiniense-Carniense Inferior, algunas de sus especies irradian y se distribuyen por todos los océanos. Su extinción está relacionada con la crisis de salinidad que tuvo lugar en el Carniense. La nueva subfamilia está constituida por dos géneros, Sephardiella y Pseudofurnishius las diferencias morfológicas de su aparato sep- timembrado, como son la estructura de la cavidad basal del elemento P1 y las variaciones morfológicas de los elementos P2 y S3, constituyen el criterio utilizado.