DOCSLIB.ORG

Geochemistry and Mineralogy of the Bembridge and Hamstead Beds (Oligocene), Isle of Wight

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Geochemistry and Mineralogy of the Bembridge and Hamstead Beds (Oligocene), Isle of Wight GEOCHEMISTRY AND MINERALOGY OF THE BEMBRIDGE AND HAMSTEAD BEDS (OLIGOCENE), ISLE OF WIGHT i IAN FREDERICK HOLMES A thesis submitted in partial fulfillment of the degree Ph. of D. in the Dept. of Geology, University of Sheffield. February, 1980 GEOCHEMISTRY AND MINERALOGY OF THE BEMBRIDGE AND HAMSTEAD BEDS (OLIGOCENE), ISLE OF WIGHT I. F. HOLHES SUMMARY Samples were collected from exposures of the Bembridge and Hamstead Beds in Whitecliff Bay, Hamstead Cliff and Bouldnor Cliff. Samples representative of various depositional environments were analysed for twenty-six major and trace elements. Mineralogical investigation by X-ray diffraction included quantification of the clay minerals, calcite and quartz. Attempts to utilise geochemical indicators of palaeosalinity proved fruitless. Pyrite occurs in association with the two marine transgressions, suggesting that the source of sulphur was from solution. Alteration of pyrite to goethite and gypsum occured during Pleistocene weathering of the Corbula Beds and the movement of ions in solution associated with this affected the original exchangeable cation contents. An increase in zirconium content was found in samples deposited in high energy environments, although exceptions to this occur. The Oligocene sediments are enriched in lead, compared to average shales, due to lead fixation in clay minerals formed from the Cornubian granites. Aragonite occurs only in samples from the Bembridge Oyster Bed, in other samples only low-magnesium calcite was identified. The calcite in the Oligocene samples is poor in substituent trace elements. The clay mineralogy is an illite/smectite/kaolinite assemblage, with traces of chlorite. The clay minerals are of a dominantly detrital origin, from Mesozoic and Tertiary sediments which lay to the north-west. The Lower Bembridge Beds in Whitecliff Bay show evidence for derivation from a kaolinite-poor, north-easterly source. There is evidence that transformation of smectite into illite and illite-smectite occurred, possibly following periods of more intense weathering in the hinterland. Two samples show evidence for the neoformation of smectite. One contains nontronite formed in a palaeosol, the other contains a smectite which is thought to have been formed from volcanic material. No variation in clay mineralogy was observed between marine and non-marine samples. I ACKNOWLEDGEMENTS , The work embodied in this thesis was made possible by financial support frcf the Natural Environment Research Council. As well as acknaaledging my indebtedness to that organisation, I should like to express rmy appreciation to the folla ling : - Dr. D. A. Spears was ny supervisor at Sheffield University and the many discussions with him helped to produce this thesis; 'Dr. R. K. Sotirioü helped with all of the X-ray techniques; Mr. V. A. Sc ogyi and Mrs. S. M. Rhodes helped with the wet chemical procedures; Mr... H. Brockley prepared the electron micrographs; Prof. D. Murchison and the staff at the organic Geochemistry Unit, Newcastle-upon-Tyne assisted with the organic geochemistry techniques; Prof. R. E. Ferrell Jr. spared time for many helpful discussions while he was in Sheffield; Miss S. K. Holmes, my sister, for her invaluable assistance in the production of this thesis. I 2 LIST OF CONTENTS Page no. SUMMARY 1 ACKNOWLEDGEMENTS 2 LIST OF CONTENTS 3 LIST OF FIGURES 6 LIST OF TABLES 8 LIST OF PLATES 10 I INTRODUCTION 11 1(A) Aims of the Thesis 11 1(A)(i) Area of study 11 1(A)(ii) The relationship of depositional environment and 11 geochemistry 1(A)(iii) The relationship of depositional environment and 13 mineralogy 1 (A) (iv) Statement of the aims of the thesis 14 2 PREVIOUS WORK 16 2(A) General Geology 16 2(A)(i) Geological setting 16 2(A)(ii) Location of the exposures 16 2(B) Palaeontology and Sedimentology 17 2(B)(i) Age of the deposits 17 2(B)(ii) Depositional environments 18 2(C) Mineralogy and Geochemistry 20 2(C)(i) Mineralogy 20 - 2(C)(ii) Geochemistry 21 3 FIELD WORK 22 3(A) Sample Collection 22 3(A)(i) Sampling aims 22 3(A)(ii) Sampling technique 22 3(A)(iii) Location and description of the outcrops 22 3(B) Features Associated with Slumping 24 3(B)(i) Large scale slumping 24 3(B)(ii) Incompetence of the Corbula Beds 25 4 GEOCHEMISTRY 26 4(A) Major Element Analyses 26 4(A)(i) Sample preparation 26 4(A)(ii) X-ray fluorescence 26 4(A)(iii) Wet chemistry 27 4(A)(iv) Duplicate precision 28 4(B) Trace Element Analyses 29 4(B)(i) Preparation and analysis 29 3 Page no. L(B)(ii) The use of acid pretreatment in determining the 30 locations of the trace elements 4(B)(ii) a) Method and results 30 4(B)(ii) b) Interpretation 30 4(C) Organic Geochemistry 32 4(C)(i) Organic contents 32 4(C)(ii) Reflectivity measurements 33 4(D) Exchangeable Cations 34 4(D)(i) Relationship with palaeosalinity 34 4(D)(ii) Statement of the problem 34. 4(D)(iii) Development of the method 34 4(D)(iv) Results obtained 39 5 MINERALOGY 41 5(A) Determination of Non-clay Minerals by X-ray Diffraction 41 5(A)(i) Sample preparation and analysis 41 5(A)(ii) Mineral identification 41 5(A)(iii) Quantification 42 5(A)(iii) a) General considerations 42 5(A)(iii) b) Calcite contents 44 5(A)(iii) c) Quartz contents 46 5(A)(iii) d) Other minerals 48 5(B) Determination of Clay Minerals by X-ray Diffraction 49 5(B)(i) Sample preparation and analysis 49 5(B)(i) a) Size fraction used 49 5(B)(i) b) Sample preparation 50 5(B)(1) c) Method of analysis 51 5(B)(ii) Mineral identification 51 5(B)(ii) a) Methods of sample pretreatment 51 5(B)(ii) b) Diagnostic properties of the clay minerals 52 5(B)(iii) Quantification 54 5(B)(iii) a) Measurements of crystallinity 54 5(B)(iii) b) Mineral content. 56 5(B)(iii) c) Conclusions 59 5(C) Clay Mineral Examination by Electron Microscopy 59 5(D) Mineralogical Quantification by Geochemical 60 Recalculation 5(D)(i) Introduction 60 5(D)(ii) The calculation of non-clay minerals 60 5(D)(iii) The calculation of clay minerals 63 5(D)(iv) Comparison of the methods of quantifying clay 65 mineralogy 4 Page no. 6 STATISTICAL ANALYSIS 67 6(A) Introduction 67 6(B) Cluster Analysis 67 6(B)(i) Introduction 67 6(B)(ii) Major elements 68 6(B)(iii) Trace elements 68 6(C) Discriminant Analysis 70 6(c)(i) Introduction 70 6(c)(ii) Results obtained 71 6(D) Correlation Analysis 72 6(D)(i) Introduction 72 6(D)(ii) Results obtained 73 7 GEOLOGICAL INTERPRETATION 76 7(A) Geochemical Interpretation 76 7(A)(i) Conclusions on the locations of the trace elements 76 7(A)(ii) Comparison of the mean element contents with the 81 results of other workers 7(A)(iii) Use of geochemistry as an indicator of 84 palaeoenvironment 7(B) Mineralogical Interpretation 89 7(B)(i) Non-clay mineralogy 89 7(B)(ii) Clay mineralogy 92 7(C) Conclusions 97 REFERENCES 100 5 LIST OF FIGURES Following page no. 1 Generalised stratigraphy of the Tertiary deposits in the 16 Hampshire Basin 2 Location map showing generalised geological structure 16 3 The effect of acid pretreatment on the trace element 30 contents of sample 31 4 The effect of acid pretreatment on the trace element 30 contents of sample 74 5 Graphs of exchangeable Ca against Mg for calcite-spiked 38 aliquots of sample 74 6 X-ray diffractogram of sample 36 41 7 Graph % MgCO d (1104. ) for 44 of mole 3 against spacing calcite (from GOLDSMITH et al, 1961) 8 Graph of calcite % against calcite (110W peak area 46 9 Diffractogram of sample 45 showing overlap of non-basal 48 clay mineral reflections and (1100) quartz peak 10 Effect of various pretreatments on the (001) clay 53 mineral peaks in sample 47 11 Recalculation of (001) glycol-smectite peak from sample 55 95 to a flat background 12 Recalculation of untreated (001) smectite and illite 55 peaks for sample 112 13 (001) illite peaks produced by the recalculation procedure 55 for samples 2 and 37 14 Method of determining smectite crystallinity (from 56 BISCAYE, 1965) 15 Method of determining % expandable layers in smectite ( 56 from WEIR et al, 1975) 16 Dendrogram obtained by cluster analysis of major element 68 contents 17 Dendrogram obtained by cluster analysis of a restricted 68 number of major elements 18 Dendrogram obtained by cluster analysis of trace element 68 contents 19 Example of the output of the correlation analysis 72 program of TILL (1969) 20 Distribution of certain elements above and below a 77 carbonaceous bed in the Hamstead Beds 21 Distribution of clay minerals in the Hamstead and Bouldnor 95 cliff sections 6 Following page no. 95 22 Distribution of the clay minerals in the Whitecliff Bay section 7 LIST OF TABLES Following or on page no. I Stratigraphic succession of the Bembridge and Hamstead 23 Beds in Hamstead and Bouldnor cliffs, showing sampled beds 2 Stratigraphic succession of the Bembridge Beds in 24 Whitecliff Bay, showing sampled beds 3 X. R. F. major element analyses 26 4 Precision of the X. R. F. determinations 26 5 Accuracy. of the X. R. F. determinations 27 6 H20+ and H2O contents 28 7 duplicate determinations 28 . Standard deviations of the 8 Trace element analyses 29 30 9 The effect of acid pretreatment on trace element concentrations 10 Extractable organic contents 33 11 Mean and standard deviation for the exchangeable 35 cations and C. E. C. in sample 74 12 Exchangeable cations determined for spiked aliquots 36 of sample 74 13 C.
Load more

Recommended publications
  • Type, Figured and Cited Specimens in the Museum of Isle of Wight Geology (Isle of Wight, England)
    THE GEOLOGICAL CURATOR VOLUME 6, No.5 CONTENTS PAPERS TYPE, FIGURED AND CITED SPECIMENS IN THE MUSEUM OF ISLE OF WIGHT GEOLOGY (ISLE OF WIGHT, ENGLAND). by J.D. Radley ........................................ ....................................................................................................................... 187 THE WORTHEN COLLECTION OF PALAEOZOIC VERTEBRATES AT THE ILLINOIS STATE MUSEUM by R.L. Leary and S. Turner ......................... ........................................................................................................195 LOST AND FOUND ......................................................................................................................................................207 DOOK REVIEWS ........................................................................................ ................................................................. 209 GEOLOGICAL CURATORS' GROUP .21ST ANNUAL GENERAL MEETING .................................................213 GEOLOGICAL CURATORS' GROUP -April 1996 TYPE, FIGURED AND CITED SPECIMENS IN THE MUSEUM OF ISLE OF WIGHT GEOLOGY (ISLE OF WIGHT, ENGLAND) by Jonathan D. Radley Radley, J.D. 1996. Type. Figured and Cited Specimens in the Museum of Isle of Wight Geology (Isle of Wight, England). The Geological Curator 6(5): 187-193. Type, figured and cited specimens in the Museum of Isle of Wight Geology are listed, as aconseouence of arecent collection survev and subseauentdocumentation work. Strengths.. currently lie in Palaeogene gas tropods, and Lower
    [Show full text]
  • Shell Morphology and Genetic Characteristics of Corbula (Potamocorbula) Spp
    Vol. 19: 297–305, 2013 AQUATIC BIOLOGY Published online November 11 doi: 10.3354/ab00539 Aquat Biol Shell morphology and genetic characteristics of Corbula (Potamocorbula) spp. (Bivalvia: Corbulidae) from the waters adjacent to Japan, Korea and San Francisco Bay Masato Owada1,*, Yoshitaro Kasai2, Shin’ichi Sato3, Jae-Sang Hong4 1Department of Biological Sciences, Kanagawa University, 2946 Tsuchiya, Hiratsuka 259-1293, Japan 2Department of Earth Sciences, Graduate School of Science, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan 3The Tohoku University Museum, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan 4Department of Oceanography, Inha University, Incheon 402-751, South Korea ABSTRACT: Corbula (Potamocorbula) spp. are natively distributed in the waters adjacent to Japan and Korea. These populations are distinguished by 6 morphological characteristics. How- ever, they have high geographic variation, and it is quite difficult to distinguish among them. In the present study, we investigated the geographic distribution of the morphological and genetic characteristics of Corbula (Potamocorbula) spp. collected from the waters adjacent to Japan, Korea and San Francisco Bay, USA. Shell morphology was inferred through canonical discrimi- nant analysis (CDA) of 8 shell characteristics, and genetic characteristics were analysed using the DNA sequences of mitochondrial cytochrome c oxidase subunit 1 (CO1) and nuclear internal tran- scribed spacer 2 (ITS2) regions. The results of CDA showed that the samples from Ganghwa-do in western Korea could be clearly separated from those of all the other localities. The molecular phy- logenetic tree and haplotype network that were constructed from the CO1 and ITS2 regions, respectively, did not show clear groupings among the collected samples, except for 1 group com- posed of samples from Ganghwa-do.
    [Show full text]
  • Smithsonian Miscellaneous Collections, '- 177
    SMITHSOMAK MISCELLANEOUSm COLLECTIONS. CHECK LIST INVERTEBRATE FOSSILS NORTH AMERICA. CRETACEOUS AND JURASSIC. BY F. B. MEEK. WASHINGTON: SMITHSONIAN INSTITUTION. APRIL, 1S64. ADYERTISEMEXT. The following Lists of the described species of Invertebrate Fossils of Nortli America have been prepared at the request of the Institution for the purpose of facilitating the labelling of the collections and the distribution of duplicate sj^ecimens. It will be readily understood that the Smithsonian Institution cannot vouch for the accuracy of the Lists, or for their complete- ness, and that all responsibility in reference to these points rests with the authors. JOSEPH HEXRY, Secretary S. I Smithsonian Institdtion, Washington, April, 18G4. (ii) PHILADELPHIA : COLLINS, PRINTER. SMITHSONIAN MISCELLANEOUS COLLECTIONS, '- 177 CHECK LIST INYERTEBRATE FOSSILS OF NORTH AMERICA. CRETACEOUS FORMATION. BY F. B. MEEK.. SUBKINGDOM PROTOZOA. Class AMORPIIOZOA. N.J. 1. Eudea? dichotoma, Gabh, Class RIIIZOPODA. Order FORAMINIFERA. Lagenidae. ? N.J. 2. Phonemus (Cristellaria) rotulatusD'Ori. Meek. N. J. 3. Phonemus (Flabellina) cuneatus, i^lorton) (Lea) Meek. N. J. 4. Phonemus (Flabellina) Sagittarius, (Jabb. N. J. 5. Phonemus (Dentalina) pulcher, Gloliigerinidae. D^^.; Neb. •6. Rotalia lenticulina, Dak. Neb. 7. Rotalia senaria, ; (Roemer) Meek. Tex. 8. Tinoporus (Orbitolina) texanus 9. Textularia americana, Ehrenhcrg. Dak. Neb. 10. Textularia missouriensis, Ehrenbenj. ; Dak.; Neb. 11. Textularia globulosa, Ehrenbenj. Neb. Meek. Dak. ; 12. Textularia phyllodes, {Ehreabtrg) 1 (1) . SUBKINGDOM R A D I A T A Class POLYPI. Order ACTINARIA. FiiiigidaB. 13. Micrabacia americana, Meek ^- Hayden. Neb. Asteridae. 14. Trochosmilia conoidea, Gahh ^ Horn. N. J. 15. Trochosmilia ? texana, Conr. Tex. 1(3. Montlivaltia atiantica, {Morton) Lonsdale. K. J. 17. Astrocoeuia guadaloupae, Roemcr.
    [Show full text]
  • Cultural Landscape Report the Browning Ranch Blanco County
    Cultural Landscape Report For The Browning Ranch Blanco County, Texas Laura Knott, Jeffrey Chusid and the University of Texas School of Architecture Historic Preservation Program Cultural Landscape Class of Spring, 2003. Copyright, August 2003, Laura Knott and Jeffrey Chusid, Austin, Texas Browning Ranch Cultural Landscape Report Table of Contents Acknowledgements.............................................................................................................................. iii Introduction.......................................................................................................................................... iv Chapter I: Prehistory and History .........................................................................................................1 Chapter II: Conditions Assessment.....................................................................................................11 Chapter III: Recommendations...........................................................................................................77 Appendices...........................................................................................................................................95 Bibliography ......................................................................................................................................149 University of Texas School of Architecture ii Browning Ranch Cultural Landscape Report Acknowledgements The production of this report would not have been possible without the generous support
    [Show full text]
  • Lake Macquarie Benthos Survey
    Lake Macquarie Benthos Survey Prepared for Great Southern Energy Pty. Ltd. (trading as Delta Coal) Chain Valley Colliery Report No. 16 By Dr John H. Laxton, Dr Emma Laxton and Ms Zofia Laxton September 2019 J.H. & E.S. Laxton - Environmental Consultants P/L 170 Warrimoo Avenue, St. Ives. NSW 2075 Australia Telephone 0447 653 387 Email [email protected] Table of Contents 1. Summary of Findings 4 2. Introduction 6 3. Location of Sampling Stations 7 4. Selection and Evaluation of the Sampling Method 7 5. Sampling Procedure 11 6. Factors Affecting the Depth of water in Lake Macquarie 12 7. Water Quality of Lake Macquarie (April 1983 – March 1997) 13 8. Light attenuation in Lake Macquarie (1983 – 1997) 15 9. Results 16 10. Benthos of Study Area – February 2012 to September 2019 16 11. Molluscs found as dead shells 23 12. Benthic organisms of the Study Area – September 2019 29 13. Sediment Analysis 40 14. Water Quality Profiles – September 2019 42 15. Analysis of data 43 16. Conclusions 48 17. References and Acknowledgements 49 2 List of Tables 1. Co-ordinates of Benthos Sampling Stations prepared by the LDO team 10 2. Water Quality of the body of Lake Macquarie (1983-1997) 14 3. Organisms found at sampling Stations on 10th and 11th March 2019 30 4. Number of species found at each station from February 2012 to September 2019 37 Mean number of marine benthic organisms for Control, Reference and Impact Stations 5. 39 (September 2019) 7. Percent mud in sediment from each station - February 2012 to September 2019 41 8.
    [Show full text]
  • Early Cretaceous (Albian) Spores and Pollen from the Glen Rose Formation of Texas and Their Significance for Correlation of the Potomac Group
    UC Davis UC Davis Previously Published Works Title Early Cretaceous (Albian) spores and pollen from the Glen Rose Formation of Texas and their significance for correlation of the Potomac Group Permalink https://escholarship.org/uc/item/7z38083b Journal Palynology, 42(4) ISSN 0191-6122 Authors Tanrikulu, S Doyle, JA Delusina, I Publication Date 2018-10-02 DOI 10.1080/01916122.2017.1374309 Peer reviewed eScholarship.org Powered by the California Digital Library University of California Palynology ISSN: 0191-6122 (Print) 1558-9188 (Online) Journal homepage: http://www.tandfonline.com/loi/tpal20 Early Cretaceous (Albian) spores and pollen from the Glen Rose Formation of Texas and their significance for correlation of the Potomac Group Sinem Tanrikulu, James A. Doyle & Irina Delusina To cite this article: Sinem Tanrikulu, James A. Doyle & Irina Delusina (2017): Early Cretaceous (Albian) spores and pollen from the Glen Rose Formation of Texas and their significance for correlation of the Potomac Group, Palynology, DOI: 10.1080/01916122.2017.1374309 To link to this article: https://doi.org/10.1080/01916122.2017.1374309 Published online: 20 Nov 2017. Submit your article to this journal View related articles View Crossmark data Full Terms & Conditions of access and use can be found at http://www.tandfonline.com/action/journalInformation?journalCode=tpal20 Download by: [73.2.105.88] Date: 20 November 2017, At: 21:34 PALYNOLOGY, 2017 https://doi.org/10.1080/01916122.2017.1374309 Early Cretaceous (Albian) spores and pollen from the Glen Rose Formation
    [Show full text]
  • Systematics, Functional Morphology and Distribution of a Bivalve (Apachecorbula Muriatica Gen
    Journal of the Marine Biological Association of the United Kingdom, 2015, 95(3), 523–535. # Marine Biological Association of the United Kingdom, 2014 doi:10.1017/S0025315414001234 Systematics, functional morphology and distribution of a bivalve (Apachecorbula muriatica gen. et sp. nov.) from the rim of the ‘Valdivia Deep’ brine pool in the Red Sea p. graham oliver1, hege vestheim2, andre’ antunes3 and stein kaartvedt2 1National Museum of Wales, Cathays Pk., Cardiff CF10 3NP, Wales, UK, 2King Abdullah University of Science and Technology, Red Sea Research Center, Thuwal 23955–6900, Saudi Arabia, 3IBB – Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, Micoteca da Universidade do Minho, University of Minho, Braga, Portugal The deep brine pools of the Red Sea comprise extreme, inhospitable habitats yet house microbial communities that potentially may fuel adjacent fauna. We here describe a novel bivalve from a deep-sea (1525 m) brine pool in the Red Sea, where conditions of high salinity, lowered pH, partial anoxia and high temperatures are prevalent. Remotely operated vehicle (ROV) footage showed that the bivalves were present in a narrow (20 cm) band along the rim of the brine pool, suggesting that it is not only tolerant of such extreme conditions but is also limited to them. The bivalve is a member of the Corbulidae and named Apachecorbula muriatica gen. et sp. nov. The shell is atypical of the family in being modioliform and thin. The semi-infaunal habit is seen in ROV images and reflected in the anatomy by the lack of siphons. The ctenidia are large and typical of a suspension feeding bivalve, but the absence of ‘guard cilia’ and the greatly reduced labial palps suggest that it is non-selective as a response to low food availability.
    [Show full text]
  • Geology of the Coastal Plain of South Carolina
    Please do not destroy or throw away this publication. If you have no further use for it, write to the Geological Survey at Washington and ask for a frank to return it UNITED STATES DEPARTMENT OF THE INTERIOR Harold L. Ickes, Secretary GEOLOGICAL SURVEY W. C. Mendenhall, Director Bulletin 867 GEOLOGY OF THE COASTAL PLAIN OF SOUTH CAROLINA BY C. WYTHE COOKE UNITED STATES GOVERNMENT PRINTING OFFICE WASHINGTON : 1936 For sale by the Superintendent of Documents, Washington, D. C. ------ Price 60 cents CONTENTS ,Page Abstract.___-_-_----_--------------_---_------------_------_-.--. 1 Physical geography _______---_-___-_-_-_-_-__-_____-_--_____-__ 2 Geographic provinces.._-----------_----_---_-_.__.--_-_..._.__ 2 Geographic divisions of the Coastal Plain of South Carolina___.____ 3 Coastal terraces_________________________________________ 4 Pamlico terrace._____._-_-____.-___..___ ______________ 6 Talbot terrace_._---_._-..___.. ..___.....___.__._._ 7 Penholoway terrace.___-___-___-_-_____-__--__--___-__ 8 Wicomico terrace._____--__-_-_---__---_----_-__--_-__ 8 Sunderland terrace.._._-.-__-._----.___-.--____.-____. 8 Coharie terrace___------__--___---_.--_-_-----------._ 9 Brandy wine terrace ____-_-_--___--__---_--_--_-_--_--- 9 Aiken Plateau._----_-----_-_--____-__-_--------------_--_ 9 Richland red hills.-_______-__-__-_.----.--_---___._._._--_ 10 High Hills of Santee---------___......_....___...__.._. 10 Congaree sand hills__----_---.____--_-__---.----.-------_ 11 Drainage__ ____---------_-_-.--__-...---__--_-_-__-__.-_._.
    [Show full text]
  • New Names Introduced by H. A. Pilsbry in the Mollusca and Crustacea, by William J
    jbyH.l in the 1 ILML 'r-i- William J. Clench Ruth D. Turner we^ f >^ ,iV i* * ACADKMY OF NATURAL SCIENCES OF PHILADELPHLV'-' NAMES INTRODUCED BY PILSBRY m mLT) Oi -0 Dr^ 5: D m NEW NAMES INTRODUCED BY H. A. PILSBRY IN THE MOLLUSCA AND CRUSTACEA by William J. C^lencli and Ivutli _L). liirner Curator ana Research Associate in Aialacology, respectively, Aiiiseum ol Comparative Zoology at Harvara College ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA — Special Publication No. 4 1962 SPECIAL PUBLICATIONS OF THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA No. I.—The Mineralogy of Pennsylvania, by Samuel Gordon. No. 2.—Crystallographic Tables for the Determination of Minerals, by V. GoLDSCHMiDT and Samuel Gordon, (Out of print.) No. 3.—Gabb's California Cretaceous and Tertiary Lamellibranchs, by Ralph B. Stewart. No. 4.—New Names Introduced by H. A. Pilsbry in the Mollusca and Crustacea, by William J. Clench and Ruth D. Turner. Publications Committee: H. Radclyffe Roberts, Chairman C. Willard Hart, Jr., Editor Ruth Patrick James A. G. Rehn James Bond James Bohlke Printed in the United States of America WICKERSHAM PRINTING COMPANY We are most grateful to several people who have done much to make this present work possible: to Drs. R. T. Abbott and H. B. Baker of the Academy for checking several names and for many helpful suggestions; to Miss Constance Carter of the library staff of the Museum of Comparative Zoology for her interest and aid in locating obscure publications; to Drs. J. C. Bequaert and Merrill Champion of the Museum of Comparative Zoology for editorial aid; and to Anne Harbison of the Academy of Natural Sciences for making possible the publication of Pilsbry's names.
    [Show full text]
  • The Basket Shell, Corbula Gibba Olivi, 1792 (Bivalve Mollusks) As a Species Resistant to Environmental Disturbances: a Review
    ISSN: 0001-5113 ACTA ADRIAT., UDC: 594.1:591.5 AADRAY 47 (1): 49 - 64, 2006 Review paper The basket shell, Corbula gibba Olivi, 1792 (Bivalve Mollusks) as a species resistant to environmental disturbances: A review Mirjana HRS-BRENKO Ruđer Bošković Institute, Center for Marine Research, Paliaga 5, 52210 Rovinj, Croatia e-mail: [email protected] Structural changes in bottom communities in many coastal and offshore areas result from enhanced eutrophication and are characterized by the presence of species that are tolerant to a wide range of environmental disturbances. In soft bottom communities that are degraded or recovering from stress, Corbula gibba appears to be a highly abundant, ecologically important species and, therefore, an interesting subject for investigation. The literature compiled in this review reveals that, Corbula is a short-lived species with high fecundity, enormous production of small eggs, and a prolonged spawning season. The fertilization of spawned eggs in open waters is followed by pelagic development of larvae, accompanied by dispersal sometimes far from the mother population. High larvae settlement frequently appears as a “recruitment boom” in a new community after a catastrophe, making Corbula a short-term dominant species until the perished invertebrate species repopulate. As a dominant suspension feeder with rapid juvenile and adult growth, Corbula becomes an important element in the food chain as a transferor of organic matter from plankton to benthos. In a relatively stable soft-bottom community, the size of the Corbula population is mainly limited by the activity of competitors and predators. Dense Corbula populations may occur in a community with low species diversity in constantly and occasionally eutrophic areas.
    [Show full text]
  • Morphogenesis and Ecogenesis of Bivalves in the Phanerozoic
    Morphogenesis and Ecogenesis of Bivalves in the Phanerozoic L. A. Nevesskaja Paleontological Institute, Russian Academy of Sciences, Profsoyuznaya ul. 123, Moscow, 117997 Russia e-mail: [email protected] Received March 18, 2002 Contents Vol. 37, Suppl. 6, 2003 The supplement is published only in English by MAIK "Nauka/lnlerperiodica" (Russia). I’uleonlologicul Journal ISSN 003 I -0301. INTRODUCTION S59I CHAPTER I. MORPHOLOGY OF BIVALVES S593 (1) S true lure of the Soil Body S593 (2) Development of the Shell (by S.V. Popov) S597 (3) Shell Mierosluelure (by S.V. Popov) S598 (4) Shell Morphology S600 (5) Reproduetion and Ontogenelie Changes of the Soft Body and the Shell S606 CHAPTER II. SYSTEM OF BIVALVES S609 CHAPTER III. CHANGES IN THE TAXONOMIC COMPOSITION OF BIVALVES IN THE PHANEROZOIC S627 CHAPTER IV. DYNAMICS OF THE TAXONOMIC DIVERSITY OF BIVALVES IN THE PHANEROZOIC S631 CHAPTER V. MORPHOGENESIS OF BIVALVE SHELLS IN THE PHANEROZOIC S635 CHAPTER VI. ECOLOGY OF BIVALVES S644 (1) Faelors Responsible lor the Distribution of Bivalves S644 (a) Abiotic Factors S644 (b) Biotic Factors S645 (c) Environment and Composition of Benthos in Different Zones of the Sea S646 (2) Elhologieal-Trophie Groups of Bivalves and Their Distribution in the Phanerozoic S646 (a) Ethological-Trophic Groups S646 (b) Distribution of Ethological-Trophic Groups in Time S649 CHAPTER VII. RELATIONSHIPS BETWEEN THE SHELL MORPHOLOGY OF BIVALVES AND THEIR MODE OF LIFE S652 (1) Morphological Characters of the Shell Indicative of the Mode of Life, Their Appearance and Evolution S652 (2) Homeomorphy in Bivalves S654 CHAPTER VIII. MORPHOLOGICAL CHARACTERIZATION OF THE ETHOLOGICAL-TROPHIC GROUPS AND CHANGES IN THEIR TAXONOMIC COMPOSITION OVER TIME S654 (1) Morphological Characterization of Major Ethological-Trophic Groups S654 (2) Changes in the Taxonomic Composition of the Ethological-Trophic Groups in Time S657 CHAPTER IX.
    [Show full text]
  • Palaeoecology of Vertebrate Assemblages from the Upper Cretaceous Judith River Group (Campanian) of Southeastern Alberta, Canada
    University of Calgary PRISM: University of Calgary's Digital Repository Graduate Studies Legacy Theses 1997 Palaeoecology of vertebrate assemblages from the Upper Cretaceous Judith River group (campanian) of southeastern Alberta, Canada Peng, Jianghua Peng, J. (1997). Palaeoecology of vertebrate assemblages from the Upper Cretaceous Judith River group (campanian) of southeastern Alberta, Canada (Unpublished doctoral thesis). University of Calgary, Calgary, AB. doi:10.11575/PRISM/17933 http://hdl.handle.net/1880/26786 doctoral thesis University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission. Downloaded from PRISM: https://prism.ucalgary.ca THE UNIVERSITY OF CALGARY Palaeoecology Of Vertebrate Assemblages From The Upper Cretaceous Judith River Group (Campanian) Of Southeastern Alberta, Canada by Jianghua Peng A DISSERTATION SUBMITTED TO THE FACULTY OF GRADUATE STUDIES IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF BIOLOGICAL SCIENCES CALGARY, ALBERTA DECEMBER, 1997 © Jianghua Peng 1997 The author of this thesis has granted the University of Calgary a non-exclusive license to reproduce and distribute copies of this thesis to users of the University of Calgary Archives. Copyright remains with the author. Theses and dissertations available in the University of Calgary Institutional Repository are solely for the purpose of private study and research. They may not be copied or reproduced, except as permitted by copyright laws, without written authority of the copyright owner.
    [Show full text]