DOCSLIB.ORG

New Findings of Eocene Nautiloids from North Western Desert, Egypt

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
New Findings of Eocene Nautiloids from North Western Desert, Egypt Journal of African Earth Sciences 159 (2019) 103580 Contents lists available at ScienceDirect Journal of African Earth Sciences journal homepage: www.elsevier.com/locate/jafrearsci New findings of eocene nautiloids from north Western Desert, Egypt T ∗ Mohamed F. Aly , Sherief A. Sadek Geology Department, Faculty of Science, Cairo University, Giza, Egypt ARTICLE INFO ABSTRACT Keywords: The Tertiary marine succession of the north Western Desert, Egypt, is rich in vertebrates, molluscs and other Nautiloids invertebrates, but nautiloids are less abundant. Five nautiloid species, are reported herein: Eutrephoceras sp., Sharks Aturoidea parkinsoni, Aturia aturi, Aturia cf. alabamensis and, Aturia cf. gujaratensis. They are collected and Tertiary identified from the lowermost part of Gebel Minqar Tebaghbagh area. The studied section is located 90 km to the Siwa oasis east of Siwa Oasis at the south of western side of the Qattara Depression. The recovered specimens are mostly Western desert crushed, partially fragmented internal molds, mostly showing badly preserved suture lines and dorsal to sub- Egypt central siphuncles. The nautiloids occur in abundance in random orientation through a clastic-dominated suc- cession. They are mostly represented by middle-aged and mature specimens. Recently, the lower part of Gebel Tabaghbagh was assigned to Late Eocene. 1. Introduction southwest of Aswan city, south Western Desert, Hewaidy and Azzab, 2002 described and identified five nautiloid species of the Paleocene The north western Desert of Egypt is almost a plain area. The only age from the Kurkur Formation. Those are Deltoidonautilus polymorphus characteristic features are the Marmarica Limestone plateau and the Hewaidy and Azzab, Deltoidonautilus sp. 1, Deltoidonautilus sp. 2, Eu- Qattara Depression where lower and upper Miocene beds are well ex- trephoceras desertorum (Quaas) and Cimmomia sp. van Vliet and Abu el posed. The area of Gebel Minqar Tabaghbagh is a newly discovered Khair (2010) reported the co-occurrence of the Late Eocene echinoid fossiliferous area in that region. Gebel Minqar Tabaghbagh is a perfect Conoclypeus sp. and nautiloid shells of Aturia sp. from the west-south Miocene outcrop of 150 m thick located 100 km east of Siwa Oasis. It west part of Qattara Depression. Hewaidy et al. (2019) described six represents the southern scarp of the plateau very near to the southern Paleogene nautiloid species from the Kharga Oasis, Western Desert tip of Qattara Depression (Fig. 1). However no much attention has been Egypt (five of Paleocene and one of Eocene ages). given for such rough area. Few workers have stepped later on; Sadek The aim of the present work is to record and systematically describe (2005), van Vliet and Abu el Khair (2010), Antar (2011) and Zalmout a new occurrence of some nautiliod species from the Tertiary rocks of et al. (2012). Egypt. These nautiliods are recovered from the lowermost glauconitic The basal part of section (17.5 m thick) is mainly shales and siltstones beds at the base of Minqar Tabaghbagh, east of Siwa Oasis. greenish sandy siltstone beds with minor limestone intercalations. The glauconitic sandy siltstones are characterized by abundance of several 2. Geologic setting nautiloid internal molds. These beds are highly abundant with the Late Eocene vertebrates, including giant archaic whales, sirenian remains The described nautiloids herein was collected and identified from and shark teeth (van Vliet and Abu el Khair, 2010; Antar, 2011; 17.5 m thick interval of glauconite and glauconitic siltstone and sand at Zalmout et al., 2012). the base of Minqar Tabaghbagh (Fig. 2). That is similar to the base of Few occurrences of Tertiary nautiloids have been reported from the Daba'a Formation that described by Norton (1967). The glauconitic Egypt (see Table 1). Cuvillier (in Hume, 1965) recorded the lower Eo- sand and siltstone facies appears to be continuous laterally in an east- cene Nautilus cf. mokattamensis Foord from Gebel Gurna. Aturia ziczac west direction (Shata, 1955; Albritton et al., 1990; Zalmout et al., (Sowerby) was described by Zittel as being associated with the Ypresian 2012). Albritton et al. (1990) stated that the Daba'a Formation is pre- molluscs between Dakhla and Farafra Oasis (in Hume, 1965). Fleming dominantly clastic in origin and contains calcareous sandstone and (1945) identified the Hercoglossa aegyptiaca Foord from the Ypresian- sandy limestone, and is a lateral equivalent of the Qasr el-Sagha For- Lutetian succession of Gebel Moqattam. In the area of Kurkur Oasis, mation, Fayum farther to the east. ∗ Corresponding author. E-mail addresses: [email protected] (M.F. Aly), [email protected] (S.A. Sadek). https://doi.org/10.1016/j.jafrearsci.2019.103580 Received 12 June 2019; Received in revised form 12 July 2019; Accepted 7 August 2019 Available online 08 August 2019 1464-343X/ © 2019 Elsevier Ltd. All rights reserved. M.F. Aly and S.A. Sadek Journal of African Earth Sciences 159 (2019) 103580 Fig. 1. Location map of the study area (Modified after Zalmout et al., 2012). Table 1 Paleogene nautiloids species reported from Egypt. All are from the Western Desert unless otherwise noted. Species Age Reported by Distribution in Egypt Nautilus cf. mokattamensis Foord 1891 Lower Eocene Cuvillier (in Hume, 1965) Mokattam, Cairo Aturia ziczac (Sowerby 1812) Zittel (in Hume, 1965) Dakhla and Farafra Oasis Hercoglossa aegyptiaca Foord 1891 Fleming (1945) Mokattam, Cairo Deltoidonautilus polymorphusHewaidy and Azzab, 2002 Paleocene Hewaidy and Azzab, 2002 Kurkur Oasis, southwest of Aswan city, south Western Desert Deltoidonautilus sp. 1 Deltoidonautilus sp. 2 Eutrephoceras desertorum (Quaas) Cimmomia sp Cimomia kurkurensis Hewaidy et al., (2019) Paleocene Hewaidy et al. (2019) Kharga Oasis, Western Deltoidonautilus hassani Hewaidy et al., (2019) Desert, Egypt Eutrephoceras desertorum (Quaas, 1902) Aturia sp. Aturoidea sp. Cimmomia sp Eocene Eutrephoceras sp. Late Eocene Present work Siwa Oasis, North Western Desert Aturoidea parkinsoni (Edwards, 1849) Aturia aturi (Basterot, 1825) Aturia cf. alabamensis (Morton, 1834) Aturia cf. gujaratensis Halder (2012) Stratigraphically, Said (1990) named the Upper Eocene shales and probably of Priabonian (beds 7–8; Fig. 2). The exposures are small hills limestones found in the southern part of the western margin of the of glauconitic sand and siltstones with iron oxides capped by gray shale. Qattara Depression as Daba'a Formation. In the west, the Eocene strata are overlained by Miocene strata, which subdivided into the Moghra, Mamura, Gebel Khashab and Marmarica formations (Tawadros, 2001). 3. Material and methods In the east, the Miocene strata unconformably overlie Oligocene rocks. The depression floor is at many places covered with Quaternary aeolian The present work is focused on the Eocene nautiloids collected from and alluvial fan deposits that form a sabkha deposits (van Vliet and Abu Gebel Tabaghbagh, north Western Desert. This material consists of el Khair, 2010). some 35 nautiloid internal molds, mostly replaced by Barite. They are The studied section in the area under study is 62 m thick and can be mostly crushed, portions of the body chamber, showing badly preserved subdivided into two major units. The upper Mamura Formation (Lower suture lines and dorsal to subcentral siphuncles in poorly preserved Miocene) and the lower Daba'a Formation (Upper Eocene-Oligocene). specimens. The nautiloids occur in abundance in random orientation The described nautiloids are collected from the base of the Tabaghbagh through the glauconitic siltstone beds rich in iron oxide nodules. They escarpment to the west-south west part of Qattara Depression. All the are mostly represented by middle-aged and mature specimens. fossils came from one level, about 70 m below the sea level that is most Conventions: Dimensions are given in millimeters: D = diameter; Wb = whorl breadth; Wh = whorl height; U = umbilicus. Figures in 2 M.F. Aly and S.A. Sadek Journal of African Earth Sciences 159 (2019) 103580 Measurements (in mm): Specimen D Wb Wh Wb/Wh U Siwa/01/CUGM 44 (100) 22 (50) 26 (59) 0.85 Occluded Siwa/02/CUGM 55 (100) 27 (49) 32 (58) 0.84 Occluded Description. The studied specimens are juveniles consisting only of one or two whorls. Broadly lenticular internal molds. Sculpture of fine, close-set equal spiral lirae. Siphuncle is completely not preserved on the studied specimens. Umbilicus closed in the described specimens. The suture line appears poorly preserved but straight to some extent. Remarks. The studied specimens are very similar to the Eutrephoceras dekayi (Morton, 1834) from North America, that figured by Landman et al. (1983, Fig. 4a) in their smooth ornamentation of shell and the sharply rounded flanks along with the broadly rounded venter. Eutrephoceras sp. has been recorded from the Paleocene of Victoria by Teichert (1947) and by McGowran (1959) from the Early and Middle Miocene of South Australia and from the Middle Miocene of Victoria, respectively. The incomplete specimens and the preservational state, along with the bad preservation of the suture lines supporting open nomenclature of the present species. Family Hercoglossidae Spath, 1927. Genus Aturoidea Vredenburg, 1925 Type-species: Nautilus parkinsoni Edwards (1849). Aturoidea parkinsoni (Edwards, 1849) Fig. 3. 1-4 1849 Nautilus parkinsoni Edwards, S. 49, Taf. 7. 1951 Aturoidea aff. parkinsoni Edwards, Miller, Fig. 15 A. Material. Four complete internal molds (Siwa/03/CUGM - Siwa/06/ CUGM), and five crushed and incomplete specimens; all specimens are compressed, deformed and replaced completely with barite (Siwa/07/ CUGM - Siwa/11/CUGM). Measurements (in mm). Specimen D Wb Wh Wb/Wh U Fig. 2. Columnar Stratigraphic section of Daba'a Formation showing the nau- Siwa/03/CUGM 42 (100) 25 (59) 23 (55) 1.08 9 (21) tiloid beds. Siwa/04/CUGM 49 (100) 27 (49) 23 (58) 1.17 14 (28) Siwa/05/CUGM 70 (100) 42 (60) 50 (71) 0.84 Occluded Siwa/06/CUGM 77 (100) 37 (48) 43 (56) 0.86 Occluded brackets are dimensions as a percentage of the diameter. Depository. All the collected specimens are housed at the Museum of the Geology Department, Cairo University, Giza, Egypt and are Description.
Load more

Recommended publications
  • Nautiloid Shell Morphology
    MEMOIR 13 Nautiloid Shell Morphology By ROUSSEAU H. FLOWER STATEBUREAUOFMINESANDMINERALRESOURCES NEWMEXICOINSTITUTEOFMININGANDTECHNOLOGY CAMPUSSTATION SOCORRO, NEWMEXICO MEMOIR 13 Nautiloid Shell Morphology By ROUSSEAU H. FLOIVER 1964 STATEBUREAUOFMINESANDMINERALRESOURCES NEWMEXICOINSTITUTEOFMININGANDTECHNOLOGY CAMPUSSTATION SOCORRO, NEWMEXICO NEW MEXICO INSTITUTE OF MINING & TECHNOLOGY E. J. Workman, President STATE BUREAU OF MINES AND MINERAL RESOURCES Alvin J. Thompson, Director THE REGENTS MEMBERS EXOFFICIO THEHONORABLEJACKM.CAMPBELL ................................ Governor of New Mexico LEONARDDELAY() ................................................... Superintendent of Public Instruction APPOINTEDMEMBERS WILLIAM G. ABBOTT ................................ ................................ ............................... Hobbs EUGENE L. COULSON, M.D ................................................................. Socorro THOMASM.CRAMER ................................ ................................ ................... Carlsbad EVA M. LARRAZOLO (Mrs. Paul F.) ................................................. Albuquerque RICHARDM.ZIMMERLY ................................ ................................ ....... Socorro Published February 1 o, 1964 For Sale by the New Mexico Bureau of Mines & Mineral Resources Campus Station, Socorro, N. Mex.—Price $2.50 Contents Page ABSTRACT ....................................................................................................................................................... 1 INTRODUCTION
    [Show full text]
  • A Late Oligocene Or Earliest Miocene Molluscan Fauna from Sitkinak Island, Alaska
    A Late Oligocene or Earliest Miocene Molluscan Fauna From Sitkinak Island, Alaska By RICHARD C. ALLISON and LOUIE MARINCOVICH, JR. GEOLOGICAL SURVEY PROFESSIONAL PAPER 1233 Describes the late Oligocene or earliest Miocene molluscan fauna from the Narrow Cape Formation on Sitkinak Island, noting the mixture of Asiatic, North American, and endemic high-latitude North Pacific taxa. UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1981 UNITED STATES DEPARTMENT OF THE INTERIOR JAMES G. WATT, &cretary GEOLOGICAL SURVEY Dallas L. Peck, Director Library of Congress Catal ogi ng in Pub1 ication Data A1 1i son, Richard C., 1935- A late Oligocene or earliest Miocene molluscan fauna from Sitki nak Is1and, A1 aska. ( Geological Survey Professional Paper ; 1233) Bibl iography: p. 9-10. Supt. of Doc. no.: I 19.16:1233 1. Moll usks, Fossil --A1 aska--Si tkinak I sl and. 2. Pal eontol ogy--01 igocene . 3. Pal eontol ogy--Mi ocene . I. Marincovich, Louie. 11. Title. 111. Series. QE801. A44 564' .09798' 4 81-607925 AACR2 For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 CONTENTS Introduction Faunal composition Age and correlation .................................................................................................................................. Relation to the type Narrow Cape Formation of Kodiak Island Paleoecology ................................................................................................................................................ Water depth Water temperature
    [Show full text]
  • Zwei Miocaene Arten Von Aturia (Nautilaceae)
    Zwei miocaene Arten von Aturia (Nautilaceae) Autor(en): Jung, Peter Objekttyp: Article Zeitschrift: Eclogae Geologicae Helvetiae Band (Jahr): 59 (1966) Heft 1 PDF erstellt am: 29.09.2021 Persistenter Link: http://doi.org/10.5169/seals-163385 Nutzungsbedingungen Die ETH-Bibliothek ist Anbieterin der digitalisierten Zeitschriften. Sie besitzt keine Urheberrechte an den Inhalten der Zeitschriften. Die Rechte liegen in der Regel bei den Herausgebern. Die auf der Plattform e-periodica veröffentlichten Dokumente stehen für nicht-kommerzielle Zwecke in Lehre und Forschung sowie für die private Nutzung frei zur Verfügung. Einzelne Dateien oder Ausdrucke aus diesem Angebot können zusammen mit diesen Nutzungsbedingungen und den korrekten Herkunftsbezeichnungen weitergegeben werden. Das Veröffentlichen von Bildern in Print- und Online-Publikationen ist nur mit vorheriger Genehmigung der Rechteinhaber erlaubt. Die systematische Speicherung von Teilen des elektronischen Angebots auf anderen Servern bedarf ebenfalls des schriftlichen Einverständnisses der Rechteinhaber. Haftungsausschluss Alle Angaben erfolgen ohne Gewähr für Vollständigkeit oder Richtigkeit. Es wird keine Haftung übernommen für Schäden durch die Verwendung von Informationen aus diesem Online-Angebot oder durch das Fehlen von Informationen. Dies gilt auch für Inhalte Dritter, die über dieses Angebot zugänglich sind. Ein Dienst der ETH-Bibliothek ETH Zürich, Rämistrasse 101, 8092 Zürich, Schweiz, www.library.ethz.ch http://www.e-periodica.ch Zwei miocaene Arten von Atavia (Nautilaceae) von Peter Jung (Basel)1) Mit 1 Textfigur und 2 Tafeln ABSTRACT .A neotype of Aturia aturi (Basterot) is designated and figured. Several Miocene species of Aturia from Northern South America, Japan and Australia are believed to be synonyms either of the European A. aturi or the Middle .American A.
    [Show full text]
  • Systematics in Palaeontology
    Systematics in palaeontology THOMAS NEVILLE GEORGE PRESIDENT'S ANNIVERSARY ADDRESS 1969 CONTENTS Fossils in neontological categories I98 (A) Purpose and method x98 (B) Linnaean taxa . x99 (e) The biospecies . 202 (D) Morphology and evolution 205 The systematics of the lineage 205 (A) Bioserial change 205 (B) The palaeodeme in phyletic series 209 (e) Palaeodemes as facies-controlled phena 2xi Phyletic series . 2~6 (A) Rates of bioserial change 2~6 (B) Character mosaics 218 (c) Differential characters 222 Phylogenetics and systematics 224 (A) Clade and grade 224 (a) Phylogenes and cladogenes 228 (e) Phylogenetic reconstruction 23 I (D) Species and genus 235 (~) The taxonomic hierarchy 238 5 Adansonian methods 240 6 References 243 SUMMARY A 'natural' taxonomic system, inherent in evolutionary change, pulses of biased selection organisms that themselves demonstrate their pressure in expanded and restricted palaeo- 'affinity', is to be recognized perhaps only in demes, and permutations of character-expres- the biospecies. The concept of the biospecies as sion in the evolutionary plexus impose a need a comprehensive taxon is, however, only for a palaeontologically-orientated systematics notional amongst the vast majority of living under which (in evolutionary descent) could organisms, and it is not directly applicable to be subsumed the taxa of the neontological fossils. 'Natural' systems of Linnaean kind rest moment. on assumptions made a priori and are imposed Environmentally controlled morphs, bio- by the systematist. The graded time-sequence facies variants, migrating variation fields, and of the lineage and the clade introduces factors typological segregants are sources of ambiguity into a systematics that cannot well be accommo- in a distinction between phenetic and genetic dated under pre-Darwinian assumptions or be fossil grades.
    [Show full text]
  • Paleontology and Stratigraphy of Eocene Rocks at Pulali Point, Jefferson County, Eastern Olympic Peninsula, Washington
    PALEONTOLOGY AND STRATIGRAPHY OF EOCENE ROCKS AT PULALI POINT, JEFFERSON COUNTY, EASTERN OLYMPIC PENINSULA, WASHINGTON by RICHARD L. SQUIRES, JAMES L. GOEDERT, and KEITH L. KALER WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES REPORT OF INVESTIGATIONS 31 1992 ., WASHINGTON STATE DEPARTMENT OF Natural Resources Brian Boyle • Commhstoner of Public Lands An Steo_r0$ - Superv1sor Division ol Geology and Earth Resources Raymond Lcmnanls. State Geologlsl PALEONTOLOGY AND STRATIGRAPHY OF EOCENE ROCKS AT PULALI POINT, JEFFERSON COUNTY, EASTERN OLYMPIC PENINSULA, WASHINGTON by RICHARD L. SQUIRES, JAMES L. GOEDERT, AND KEITH L. KALER WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES REPORT OF INVESTIGATIONS 31 1992 W>.SHING'TON STAT1r OEPARTMDIT or Natural Resources 8ncll) Bov,. · COmmmioner ot Pu!xk: tancb M $i.atni; S\lp$1'WOJ' DtY!llcn 01 Gtology ahCS £artti ~ Raymond l.mlMn.:I ~Geologist Cover: From left, ?Falsifusus marysvillensis; Pachycrommium clarki; large bivalve, Veneri­ cardia hornii s.s.; Delectopecten cf. D. vancouverensis sanjuanensis; Turritella uvasana hendoni. These specimens are shown at 150 percent of the dimensions on Plates 1 and 3. Use of trade, product, or firm names in this report is for descriptive purposes only and does not consitute endorsement by the Washington Division of Geology and Earth Resources. This report is available from: Publications Washington Department of Natural Resources Division of Geology and Earth Resources P.O. Box 47007 Olympia, WA 98504-7007 Price $ 1.85 Tax (Stale residenl.t only) .15 Total $ 2.00 Mail orders must be prepaid; please add $1.00 to each order for postage and handling. Make checks payable to the Department of Natural Resources.
    [Show full text]
  • NARG's Inaugural Newsletter the Taxonomy Report
    vini, vidi, fossum NARG Newsletter North America Research Group THE NARG www.narg-online.com MISSION STATEMENT Pacific Northwest Paleontology, Paleobotony, and Geology The mission of NARG is VOLUME 1, ISSUE 1 JANUARY 2005 to provide a forum for individuals who possess a passionate interest in fossils. In the Pacific NW, we are responsible for a wealth in fossil record. We document our find- NARG’s Inaugural Newsletter ings and strive to im- prove communication for scientific contribution and public benefit. The genesis of NARG began in lecting in road cuts near Skamo- soaking them in water for several Our goal is to develop an 2000 with Andrew and Steven kawa, Porter and KM Mountain days and then freezing them to affiliation of fossil enthu- Bland. The Bland brothers went in southwest Washington. These beating them with sledgeham- siasts working together, out on a road trip through Cen- locales produced many fine con- mers. Finally, the proper tech- to continue research, perform site investiga- tral Oregon that carried them cretions containing crabs, wood, nique was devised and, ulti- tion, have fun, and con- through Mitchell, Fossil, Spray, bone and small sea creatures. It mately, with Andrew’s natural tribute to the growth and Shaniko and other turn of the didn’t take much time for the preparation skill of the specimen, development of an active, premier group of avoca- century towns. At some point brother’s to accumulate enough the amazing creatures were re- tional paleontologists. during the trip the two brothers vealed —literally captured in decided to stop and explore time.
    [Show full text]
  • Geologic Map of Washington - Northwest Quadrant
    GEOLOGIC MAP OF WASHINGTON - NORTHWEST QUADRANT by JOE D. DRAGOVICH, ROBERT L. LOGAN, HENRY W. SCHASSE, TIMOTHY J. WALSH, WILLIAM S. LINGLEY, JR., DAVID K . NORMAN, WENDY J. GERSTEL, THOMAS J. LAPEN, J. ERIC SCHUSTER, AND KAREN D. MEYERS WASHINGTON DIVISION Of GEOLOGY AND EARTH RESOURCES GEOLOGIC MAP GM-50 2002 •• WASHINGTON STATE DEPARTMENTOF 4 r Natural Resources Doug Sutherland· Commissioner of Pubhc Lands Division ol Geology and Earth Resources Ron Telssera, Slate Geologist WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES Ron Teissere, State Geologist David K. Norman, Assistant State Geologist GEOLOGIC MAP OF WASHINGTON­ NORTHWEST QUADRANT by Joe D. Dragovich, Robert L. Logan, Henry W. Schasse, Timothy J. Walsh, William S. Lingley, Jr., David K. Norman, Wendy J. Gerstel, Thomas J. Lapen, J. Eric Schuster, and Karen D. Meyers This publication is dedicated to Rowland W. Tabor, U.S. Geological Survey, retired, in recognition and appreciation of his fundamental contributions to geologic mapping and geologic understanding in the Cascade Range and Olympic Mountains. WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES GEOLOGIC MAP GM-50 2002 Envelope photo: View to the northeast from Hurricane Ridge in the Olympic Mountains across the eastern Strait of Juan de Fuca to the northern Cascade Range. The Dungeness River lowland, capped by late Pleistocene glacial sedi­ ments, is in the center foreground. Holocene Dungeness Spit is in the lower left foreground. Fidalgo Island and Mount Erie, composed of Jurassic intrusive and Jurassic to Cretaceous sedimentary rocks of the Fidalgo Complex, are visible as the first high point of land directly across the strait from Dungeness Spit.
    [Show full text]
  • The Tertiary Formations of Western Washington
    ,~, ASHTNG'l'ON HEOLOHICAL SURV FiY HENRY LANDES, State GMlogls ' B LLETIN N o. 13 The Tertiary Formations of Western Washington By CHARLE E. WEAYER 0 1.\'.' )I l'U.. \\'.\SH. FllA:-IK ) 1. I.A~I ROlt '.'I ~ I'r11r.1c f'81!(T•:R l!)JG ::·::. ·:: .. ··.: :: : : : ..: :. ·. :• :~ ... : ·:.::::: :·:. :·.. .: . ·.·.:·. .: ·.:.. ..··: . .: .. ·.·::·::...... .. .. ... .... ..... ... : :::·-.::·.. :: .. : ... .. .. ... :. : •• : !• •: ••• : .... ... .. .. .. ...... ... .... ) BOA RD OF GEOLOGICAL SURVEY. G0Yc 1·nor ERNEST LISTER, Chairman. L ieutenant Governor L ou is F . H A1tT. State Treasurer E nw AR n l\I EATH, Secretary. P re:-idcnt I-! E NltY S 1, zzALLO. President ERNJ,ST 0. HOLLAND. H .ENUY L ANDES, State Geologist. 15719 LETTER OF TRANS:\IIT1\·\L. G01•ernor Ernest Lister, Chairman, and Members of the Bocird of Geological Survey. GENTLEMEN: 1 have the honor to submit herewith a report en­ titled "T he T ertiary Formations of ,~, cstcrn VVashingtou," by Charle E. VVcaYcr, with the recommendation that it he printed as Bulletin No. lS of the Survey reports. Vcry rcspectfully, 0 H El\rrl.Y L l\NDE.. Sta.te Geologist. .. .. ...... .. ..... .:. ··::.. ...·:: . .. ... ... ·: ..·::··.::~.:: ..: ... ... ... :. : .•: :• •: ·. : : :··. :. ·.: . ··:. .:·.:: . ·:. .. :. •. .: TABLE OF CONTENT S. P«uc ILLUSTRATIONS . .. .. 10 INTRODUCTION . 13 Field wo1·k and acknowledgments. 13 Historical review . • . 16 Bibliography . 19 CHAPTER r. To1,ou11Aeuv .,x1> DHATNAoic................. ...... 54 General statement . • . 54 CHAPTER II. PUE·Tt:R'l'ILl.ln'. Fo1u1Nl'I0NS . li2 General statement . 62 Old metamorphic series. 63 Geographic distribution . 63 Western slope of northern Cascades....................... 63 Olympic mountains . 66 Index granodiorite . 66 Areal distribution . 66 Character of outcro1>. 66 Petrographic description . 66 Correlation . 66 Hoh formation . 67 Geographic distribution . 67 Character of outcrops. 68 Lithology . 71 Geologic structure . 72 Stratigraphy .
    [Show full text]
  • Cephalopods from the Late Eocene Hoko River Formation, Northwestern Washington Richard L
    Oi<~e2> K A.. Natural History Museum ifiCl^i Of Los Angeles County IVooCL Invertebrate Paleontology J. Vakom.. 62(1). 1988. pp. 76-82 Copyright 1488. The- Paleontologual Society 0022-3360,88/0062-0076S03.00 CEPHALOPODS FROM THE LATE EOCENE HOKO RIVER FORMATION, NORTHWESTERN WASHINGTON RICHARD L. SQUIRES Department of Geological Sciences, California State University, Northridge 91330 ABSTRACT—Rare specimens of the nautiloids Nautilus and Aturia and extremely rare specimens of a sepiamorph sepiid are described from the late Eocene Hoko River Formation, northern Olympic Peninsula, Washington. The well-preserved partial phragmocones are from channel-fill clastics deposited on the inner and middle slopes of a submarine-fan system. The Nautilus specimen is allied to N. cookanum Whitfield from middle Eocene strata, New Jersey, and is probably conspecific with Nautilus sp. (Miller) from late Eocene strata, northwestern Oregon, both of which were previously assigned to Eutrephoceras. This is the first record of Nautilus in the northeastern Pacific. The Aturia specimen is tentatively identified as A. cf. A. alabamensis (Morton), a species previously only known from late Eocene strata in the Atlantic-Gulf Coastal area and northeastern Mexico. Aturia alabamensis may be the same as numerous Eocene North American aturiid species. The two sepiamorph sepiid specimens resemble Belosepia Voltz but are probably generically distinct. They are only the second record of sepiids in the Eocene of the northeastern Pacific. INTRODUCTION rizian Stage (late Eocene). He also inferred, based on the benthic ATE EOCENE cephalopods are rare in the northeastern Pacific. foraminifers, that the formation was deposited in relatively cool, L moderately shallow ocean waters between lower neritic and up- The occurrence of three genera at a locality in northwestern permost bathyal depths.
    [Show full text]
  • ABHANDLUNGEN DER GEOLOGISCHEN BUNDESANSTALT Abh
    ©Geol. Bundesanstalt, Wien; download unter www.geologie.ac.at ABHANDLUNGEN DER GEOLOGISCHEN BUNDESANSTALT Abh. Geol. B.-A. ISSN 0016–7800 ISBN 3-85316-14-X Band 57 S. 459–466 Wien, Februar 2002 Cephalopods – Present and Past Editors: H. Summesberger, K. Histon & A. Daurer Shell Accumulations of the Nautilidae Aturia (Aturia) aturi (BAST.) in the Lower Miocene Paratethys (Lower Austria) ALEXANDER LUKENEDER & MATHIAS HARZHAUSER*) 5 Text-Figures and 1 Plate Lower Austria Miocene Paratethys Nautilidae Shell Accumulation Contents Zusammenfassung ...................................................................................................... 459 Abstract ................................................................................................................. 459 1. Introduction ............................................................................................................. 459 2. Geological Setting ....................................................................................................... 460 2.1. Section Obermarkersdorf............................................................................................ 460 2.2. Sections Unternalb A & B ............................................................................................ 460 3. Material ................................................................................................................. 462 4. Distribution and Palaeobiology ........................................................................................... 463 5. Conclusions
    [Show full text]
  • ATURIA CUBAENSIS (LEA, 1841) (CEPHALOPODA, NAUTILOIDEA) in the MIOCENE of CHILE: PALEOBIOGEOGRAPHY, TAPHONOMY and MODE of LIFE Sven N
    TOMO 1 - Análisis de Cuencas ATURIA CUBAENSIS (LEA, 1841) (CEPHALOPODA, NAUTILOIDEA) IN THE MIOCENE OF CHILE: PALEOBIOGEOGRAPHY, TAPHONOMY AND MODE OF LIFE Sven N. Nielsen (1), Klaus Bandel (2) & Björn Kröger (3) (1) GeoForschungsZentrum-Potsdam, Sektion 3.1, Telegrafenberg, 14473 Potsdam, Germany ([email protected]) (2) Geologisch-Paläontologisches Institut und Museum, Universität Hamburg, Bundesstrasse 55, 20146 Hamburg, Germany (3) Museum für Naturkunde, Invalidenstrasse 43, 10115 Berlin, Germany GEOLOGY Fossil nautiloids belonging to the genus Aturia have been found at several localities along the coast of central and southern Chile (Fig. 1). The sedimentology of the Navidad Formation has been treated in detail by Tavera (1979) and Encinas et al. (2003) but only very short sedimentological descriptions are available for the Ranquil Formation (García, 1968) and the Lacui Formation (Antinao et al., 2000). The locality at Bahía Inútil (POR) is the type section of the Late Eocene-Early Oligocene Cameronian Stage of Natland and Gonzales (1974). The localities mentioned here, except that in Tierra del Fuego, have been dated as latest Miocene by Finger et al. (2003). Figure 1. Localities yielding Aturia cubaensis. A. Navidad Fm. B. Ranquil Fm. C. Lacui Fm. 89 XI CONGRESO GEOLOGICO CHILENO However, new data suggests that some localities might be even younger (K. Finger, unpublished data). Reworking of older sediments and displacement into greater depths have been recognized for many localities (Finger et al., 2003) and a specimen of Aturia has been dated with strontium isotopes as 16.8 Ma (Nielsen and Glodny, 2006). TAPHONOMY Nautiloids are usually not abundant in Cenozoic strata. Accordingly, occurrences of several to many shells are often attributed to post-mortem drift because nautiloid shells, especially of the genus Aturia, float well (Chirat, 2000).
    [Show full text]
  • Notes on the Carboniferous Cephalopoda
    Downloaded from http://pygs.lyellcollection.org/ by guest on October 1, 2021 257 some two miles inland, at an elevation of about 200 feet above the sea-level; and more recently have had a specimen given to me, said to have been found in Cornwall, but I am somewhat dubious about the accuracy of this locality. I am under the impression that Yermiculite Granite will be found in Yorkshire, especially in the northern division of the West Riding; and I trust our geological friends will carefully examine any granite boulders they may meet with in their excursions. It is only when the Granite is decomposed that the mineral can be properly separated from it; but even in situ, by careful observation, there will be no difficulty in detecting it. That these Granite boulders have travelled a long distance I am fully persuaded, and my belief is they have been transported to our shores in floating ice, very probably from Labrador. NOTES ON CARBONIFEROUS CEPHALOPODA. PART I. RECENT CEPHALOPODA. BY WILLIAM CASH, F.G.S. (PLATE XI.) THE true method of reasoning on natural objects and phenomena, is from that which is well known to that which is unknown; hence it follows, that a sound knowledge of the structure and relations of Fossil Animals can only be acquired by a careful study of the structure and relations of their living analogues. These and similar considerations have resulted in prefacing the proposed " Notes on Carboniferous Cepha• lopoda," with the following remarks on the structure, habits, distribution, and classification of their living repre• sentatives.
    [Show full text]