Ammolite: Iridescent Fossilized Ammonite from Southern Alberta
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A Preliminary Study on the Interfacial Strength of Red Abalone
University of Vermont ScholarWorks @ UVM Graduate College Dissertations and Theses Dissertations and Theses 2016 A Preliminary Study On The nI terfacial Strength Of Red Abalone Saleh Jaman Alghamdi University of Vermont Follow this and additional works at: https://scholarworks.uvm.edu/graddis Part of the Civil Engineering Commons Recommended Citation Alghamdi, Saleh Jaman, "A Preliminary Study On The nI terfacial Strength Of Red Abalone" (2016). Graduate College Dissertations and Theses. 633. https://scholarworks.uvm.edu/graddis/633 This Thesis is brought to you for free and open access by the Dissertations and Theses at ScholarWorks @ UVM. It has been accepted for inclusion in Graduate College Dissertations and Theses by an authorized administrator of ScholarWorks @ UVM. For more information, please contact [email protected]. A PRELIMINARY STUDY ON THE INTERFACIAL STRENGTH OF RED ABALONE A Thesis Presented by Saleh J Alghamdi to The Faculty of the Graduate College of The University of Vermont In Partial Fulfillment of the Requirements for the Degree of Master of Science Specializing in Civil Engineering October, 2016 Defense Date: June 14, 2016 Thesis Examination Committee: Ting Tan, Ph.D, Advisor Jie Yang, Ph.D., Chairperson George Pinder, Ph.D. Cynthia J. Forehand, Ph.D., Dean of the Graduate College Abstract Nacre is a hierarchical material found within the tough shells of red abalone. Despite being composed of calcium carbonate, nacre exhibits remarkable mechanical properties resulting from the nanoscale brick-and-mortar structure made from aragonite polygons. The objective of this research is to elucidate the toughening mechanisms associated with the interfacial resistance of red abalone. -
Stratigraphy and Paleontology of Mid-Cretaceous Rocks in Minnesota and Contiguous Areas
Stratigraphy and Paleontology of Mid-Cretaceous Rocks in Minnesota and Contiguous Areas GEOLOGICAL SURVEY PROFESSIONAL PAPER 1253 Stratigraphy and Paleontology of Mid-Cretaceous Rocks in Minnesota and Contiguous Areas By WILLIAM A. COBBAN and E. A. MEREWETHER Molluscan Fossil Record from the Northeastern Part of the Upper Cretaceous Seaway, Western Interior By WILLIAM A. COBBAN Lower Upper Cretaceous Strata in Minnesota and Adjacent Areas-Time-Stratigraphic Correlations. and Structural Attitudes By E. A. M EREWETHER GEOLOGICAL SURVEY PROFESSIONAL PAPER 1 2 53 UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON 1983 UNITED STATES DEPARTMENT OF THE INTERIOR JAMES G. WATT, Secretary GEOLOGICAL SURVEY Dallas L. Peck, Director Library of Congress Cataloging in Publication Data Cobban, William Aubrey, 1916 Stratigraphy and paleontology of mid-Cretaceous rocks in Minnesota and contiguous areas. (Geological Survey Professional Paper 1253) Bibliography: 52 p. Supt. of Docs. no.: I 19.16 A. Molluscan fossil record from the northeastern part of the Upper Cretaceous seaway, Western Interior by William A. Cobban. B. Lower Upper Cretaceous strata in Minnesota and adjacent areas-time-stratigraphic correlations and structural attitudes by E. A. Merewether. I. Mollusks, Fossil-Middle West. 2. Geology, Stratigraphic-Cretaceous. 3. Geology-Middle West. 4. Paleontology-Cretaceous. 5. Paleontology-Middle West. I. Merewether, E. A. (Edward Allen), 1930. II. Title. III. Series. QE687.C6 551.7'7'09776 81--607803 AACR2 For sale by the Distribution Branch, U.S. -
Pearls and Organic Gemstones
Pearls and Organic Gemstones INTRODUCTION Pearls were probably the first discovered gems of significance. Because they need no cutting or treatment to enhance their beauty and are rare natural occurrences, they have most likely always been highly esteemed. Organic gemstones are anything created by living processes. We have looked at amber in the past, but bone, teeth (such as ivory), and shells all have some value and are used today as gemstones. Pearls in General A pearl is grown by a mollusk (a bivalve such as a clam, oyster, or mussel or snail [single shell = valve]) in response to an irritant. Bivalves (two shelled mollusks) that secrete pearls live in both fresh‐ and saltwater. The irritant in most cases is a parasite (though it could be a grain of sand or other object). The parasite, a worm or other creature, is walled off by a secretion of calcium carbonate and protein. The calcium carbonate is the same as the inorganic material that makes stalactites in caves, and the protein is called conchiolin. The combination of these two substances (calcium carbonate and protein) makes the pearl's nacre (Nacre is also called mother of pearl). The nacre is a lustrous deposit around the irritant and forms concentric layers (overlapping circles). Many concentric layers of nacre build up over a period of a few years creating a pearl. The internal pattern is much like that seen in a jawbreaker. The layers create a sheen or luster that has iridescence and is described as both pearly luster and if colors of the rainbow are present, the pearl's orient. -
Colored Gemstones Cultured Pearls
Cultured Pearls Colored Gemstones Diamond Council of America ©2016 Cultured Pearls In This Lesson: •A World Apart • Pearl Traditions • Natural Pearls • Cultured Pearls •Value Factors •Product Highlights • Culturing Sales A WORLD APART In Lesson 1 you learned that any kind of gem except diamond is considered a colored gem. Although pearls are included in that broad classification, they really belong to a world apart. Most customers recognize this instinctively, sensing a special appeal about pearls. There are several themes you can use in a sales presenta- tion to evoke or enhance pearl’s separate place in the gem kingdom: • Pearls are born in water. This intuitive contrast with other gems, which are dug from the ground, gives pearls an aura of gentleness, freshness, and fluid grace. • Pearls originate from life. While most gems are minerals produced by inanimate geology, pearls are organic. They come from living beings. Much of pearls’ mystique arises from this connection. • Pearls possess a beauty that’s all their own. Most gems depend on cutting or carving to reveal their charms, but pearls emerge gleaming from their shells. Cultured pearls are born in water and originate from living organisms. They Though certain factors of pearl value are comparable are natural in their beauty and classic to those of other gems, key considerations are unique. as a gem. Colored Gemstones 5 1 Cultured Pearls Cultured pearls are modern forms of a classic gem. They ® combine Nature’s creative power with human art and JA SPC SKILLS If you’re participating in the JA® science. You could even say that cultured pearls show how Sales Professional Certification people can work with the environment to make age-old Program™, this lesson presents infor- mation related to the following Skill beauty available now, and for future generations as well. -
Does Abalone Nacre Form by Heteroepitaxial Nucleation Or by Growth Through Mineral Bridges?
Chem. Mater. 1997, 9, 1731-1740 1731 Does Abalone Nacre Form by Heteroepitaxial Nucleation or by Growth through Mineral Bridges? Tilman E. Scha¨ffer,*,† Cristian Ionescu-Zanetti,†,⊥ Roger Proksch,† Monika Fritz,†,‡ Deron A. Walters,† Nils Almqvist,†,| Charlotte M. Zaremba,§,⊥ Angela M. Belcher,‡,§ Bettye L. Smith,†,⊥ Galen D. Stucky,§,⊥ Daniel E. Morse,‡,⊥ and Paul K. Hansma†,⊥ Department of Physics, University of California, Santa Barbara, California 93106; Marine Biotechnology Center and Department of Molecular, Cellular and Developmental Biology, University of California, Santa Barbara, California 93106; Department of Chemistry, University of California, Santa Barbara, California 93106; Materials Research Laboratory, University of California, Santa Barbara, California 93106; and Department of Physics, Luleå University of Technology, S-97187 Luleå, Sweden Received August 12, 1996. Revised Manuscript Received June 10, 1997X We present experimental support for a model of abalone nacre growth that is based on mineral bridges between successive aragonite tablets rather than on heteroepitaxial nucleation. Interlamellar sheets of organic polymers delineate the aragonite tablets but allow the tablets to grow mineral bridges through pores in the sheets. Atomic force microscope images of interlamellar organic sheets from flat pearls made by Haliotis rufescens (red abalone; marine gastropod mollusk) reveal a fibrous core and holes of 5-50 nm in diameter. Scanning ion conductance microscopy shows that these holes are actually pores through the interlamellar sheets. With the help of statistical analysis we can associate the pore-to-pore spacings in the interlamellar sheets with the observed offsets of successive nacre tablets. These results, supplemented by AFM, SEM, and TEM images, support and extend the model of biofabrication of gastropod nacre which is based on mineral bridges between the aragonite tablets. -
Montana Group and Equivalent Rocks, Montana, Wyoming, and North and South Dakota
GEOLOGY LIBRARY-j 2nd SETi Stratigraphy and Geologic History of the Montana Group and Equivalent Rocks, Montana, Wyoming, and North and South Dakota GEOLOGICAL SURVEY PROFESSION AL PAPER 776 INSTITUTE OF Q / NT \T AU G 27 1973 volt TECHNOLOGY metadc303 96 6 I Stratigraphy and Geologic History of the Montana Group and Equivalent Rocks, Montana, Wyoming, and North and South Dakota By J. R. GILL and W. A. COBBAN GEOLOGICAL SURVEY PROFESSIONAL PAPER 776 Stratigraphic,paleontologic, and radiometric data are N r combined to determine the paleogeography for a part of the upper Upper Cretaceous UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1973 UNITED STATES DEPARTMENT OF THE INTERIOR ROGERS C. B. MORTON, Secretary GEOLOGICAL SURVEY V. E. McKelvey, Director Library of Congress catalog-card No. 73-600136 For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 - Price 85 cents domestic postpaid or 60 cents GPO Bookstore Stock Number 2401-00342 CONTENTS Page Page Abstract ..................................................................................... 1 Geologic history of the Montana Group ................................ 20 Introduction ................................................................................ 1 Telegraph Creek--Eagle regression..................................20 Geologic setting -......................................................................................................... ........ 2 0 Amm -onitesequence --------------------------------------- Judith -
Effective Discharge for Suspended Sediment Transport in Streams of the Saskatchewan River Basin Peter Ashmore University of Western Ontario
Western University Scholarship@Western Geography Publications Geography Department 6-1988 Effective Discharge for Suspended Sediment Transport in Streams of the Saskatchewan River Basin Peter Ashmore University of Western Ontario T J. Day Sediment Survey Section, Water Survey of Canada Follow this and additional works at: https://ir.lib.uwo.ca/geographypub Part of the Geography Commons Citation of this paper: Ashmore, Peter and Day, T J., "Effective Discharge for Suspended Sediment Transport in Streams of the Saskatchewan River Basin" (1988). Geography Publications. 294. https://ir.lib.uwo.ca/geographypub/294 WATER RESOURCESRESEARCH, VOL. 24, NO. 6, PAGES864-870, JUNE 1988 EffectiveDischarge for SuspendedSediment Transport in Streams of the Saskatchewan River Basin P. E. ASaMO• DepartmentofGeography, University ofSaskatchewan, Saskatoon, Saskatchewan, Canada T. J. D^Y SedimentSurvey Section, Water Resources Branch, Inland Waters/Lands Directorate, Environment Canada, Ottawa, Ontario Effectivedischarge for suspended sediment load was determined for 21 sites in theSaskatchewan River basinat whichsediment records range from 5 to 29years in length.The drainage areas for these streams rangesfrom 10 to over 300,000 km•. Thesediment discharge histograms havea varietyofforms ranging fromthe classic unimodal form in whichthe peak occurs at dischargeswith a durationof 1-3%to those in whichthe effective discharge isthe extreme event of recordand cases in whicha singleeffective dischargeis difficult to define.The percentage duration of the effective. -
Thank You, Shaun Shelton, for a Very Informative Program on Cleaning Specimens with an Impressive Array of Minerals Displayed
Volume 57 Number 8 August 1, 2016 From Da Prez: Thank you, Shaun Shelton, for a very informative program on cleaning specimens with an impressive array of minerals displayed. We learned a lot, even who is ready with a short joke once asked! A large group of 11 travelled to Marshall, NC for the month’s field trip to Little Pine Garnet Mine. I believe it was about 6 degrees cooler there at 90 degrees, and even cooler inside the mine, of course. The mine has changed and weathered considerably in the last few years. Digging in the creek bank proved to be the most productive as Steve Smith and Mike Smagner found. At least they gave us a group discount rate. Unless more of the mine is opened up, I don’t know that it will be cost effective as a destination, but always good to get outdoors and find a few specimens. We hope many of you can make it for the Grassy Creek Show and to Crabtree Mine while in the area of Little Switzerland and Spruce Pine. [ The] August meeting will offer a rare look into the history of the club, offered by Joe Maguire [Gary Parker, Ed Deckert, Joyce Patton, Steve Smith, John Hiller, Mary Pendergraph, and others.] See you soon! Keep cool! K B Montgomery Hospitality Report 2016: Next Club Meeting Janet Woodcock August 1, 2016 7:00 PM Jan. 4: Joe Maguire New Garden Friends Feb. 1: Debbie Bechtold 801 New Garden Road, Greensboro, NC March 7: Dawn & Shawn Healy April 4: Debbie Bechtold May 2: Gary Parker Joe Maguire—GGMC History June 6: Mary Pendergraph July 11: Shelton family McCreery Scholarship: $ 1,096.00 Aug. -
The Dinosaur Park - Bearpaw Formation Transition in the Cypress Hills Region of Southwestern Saskatchewan, Canada Meagan M
The Dinosaur Park - Bearpaw Formation Transition in the Cypress Hills Region of Southwestern Saskatchewan, Canada Meagan M. Gilbert Department of Geological Sciences, University of Saskatchewan; [email protected] Summary The Upper Cretaceous Dinosaur Park Formation (DPF) is a south- and eastward-thinning fluvial to marginal marine clastic-wedge in the Western Canadian Sedimentary Basin. The DPF is overlain by the Bearpaw Formation (BF), a fully marine clastic succession representing the final major transgression of the epicontinental Western Interior Seaway (WIS) across western North America. In southwestern Saskatchewan, the DPF is comprised of marginal marine coal, carbonaceous shale, and heterolithic siltstone and sandstone grading vertically into marine sandstone and shale of the Bearpaw Formation. Due to Saskatchewan’s proximity to the paleocoastline, 5th order transgressive cycles resulted in the deposition of multiple coal seams (Lethbridge Coal Zone; LCZ) in the upper two-thirds of the DPF in the study area. The estimated total volume of coal is 48109 m3, with a gas potential of 46109 m3 (Frank, 2005). The focus of this study is to characterize the facies and facies associations of the DPF, the newly erected Manâtakâw Member, and the lower BF in the Cypress Hills region of southwestern Saskatchewan utilizing core, outcrop, and geophysical well log data. This study provides a comprehensive sequence stratigraphic overview of the DPF-BF transition in Saskatchewan and the potential for coalbed methane exploration. Introduction The Dinosaur Park and Bearpaw Formations in Alberta, and its equivalents in Montana, have been the focus of several sedimentologic and stratigraphic studies due to exceptional outcrop exposure and extensive subsurface data (e.g., McLean, 1971; Wood, 1985, 1989; Eberth and Hamblin, 1993; Tsujita, 1995; Catuneanu et al., 1997; Hamblin, 1997; Rogers et al., 2016). -
TGI Strat Column 2009.Cdr
STRATIGRAPHIC CORRELATION CHART TGI II: Williston Basin Architecture and Hydrocarbon Potential in Eastern Saskatchewan and Western Manitoba EASTERN MANITOBA PERIOD MANITOBA SUBSURFACE SASKATCHEWAN OUTCROP ERA glacial drift glacial drift glacial drift Quaternary Wood Mountain Formation Peace Garden Peace Garden Member Tertiary Member Ravenscrag Formation CENOZOIC Formation Goodlands Member Formation Goodlands Member Turtle Mountain Turtle Mountain Turtle Frenchman Formation Whitemud Formation Boissevain Formation Boissevain Formation Eastend Formation Coulter Member Coulter Member Bearpaw Formation Odanah Member Belly River “marker” Odanah Member Belly River Formation “lower” Odanah Member Millwood Member Lea Park Formation Millwood Member MONTANA GROUP Pembina Member Pembina Member Pierre Shale Pierre Shale Milk River Formation Gammon Ferruginous Member Gammon Ferruginous Member Niobrara Formation Chalky Unit Boyne Member Boyne Member Boyne Calcareous Shale Unit Member Carlile Morden Member Carlile upper Formation Morden Member Formation Morden Member Carlile Formation Assiniboine Marco Calcarenite Assiniboine Member Member CRETACEOUS Second White Specks Laurier Limestone Beds Favel Favel Keld Keld Member Member Formation Formation Belle Fourche Formation Belle Fourche Member MESOZOIC COLORADO GROUP Belle Fourche Member upper Fish Scale Formation Fish Scale Zone upper Base of Fish Scale marker Base of Fish Scale marker Westgate Formation Westgate Member lower Westgate Member Newcastle Formation Newcastle Member lower Viking Sandstone -
The Journal of Gemmology Editor: Dr R.R
he Journa TGemmolog Volume 25 No. 8 October 1997 The Gemmological Association and Gem Testing Laboratory of Great Britain Gemmological Association and Gem Testing Laboratory of Great Britain 27 Greville Street, London Eel N SSU Tel: 0171 404 1134 Fax: 0171 404 8843 e-mail: [email protected] Website: www.gagtl.ac.uklgagtl President: Professor R.A. Howie Vice-Presidents: LM. Bruton, Af'. ram, D.C. Kent, R.K. Mitchell Honorary Fellows: R.A. Howie, R.T. Liddicoat Inr, K. Nassau Honorary Life Members: D.). Callaghan, LA. lobbins, H. Tillander Council of Management: C.R. Cavey, T.]. Davidson, N.W. Decks, R.R. Harding, I. Thomson, V.P. Watson Members' Council: Aj. Allnutt, P. Dwyer-Hickey, R. fuller, l. Greatwood. B. jackson, J. Kessler, j. Monnickendam, L. Music, l.B. Nelson, P.G. Read, R. Shepherd, C.H. VVinter Branch Chairmen: Midlands - C.M. Green, North West - I. Knight, Scottish - B. jackson Examiners: A.j. Allnutt, M.Sc., Ph.D., leA, S.M. Anderson, B.Se. (Hons), I-CA, L. Bartlett, 13.Se, .'vI.phil., I-G/\' DCi\, E.M. Bruton, FGA, DC/\, c.~. Cavey, FGA, S. Coelho, B.Se, I-G,\' DGt\, Prof. A.T. Collins, B.Sc, Ph.D, A.G. Good, FGA, f1GA, Cj.E. Halt B.Sc. (Hons), FGr\, G.M. Howe, FG,'\, oo-, G.H. jones, B.Se, PhD., FCA, M. Newton, B.Se, D.PhiL, H.L. Plumb, B.Sc., ICA, DCA, R.D. Ross, B.5e, I-GA, DGA, P..A.. Sadler, 13.5c., IGA, DCA, E. Stern, I'GA, DC/\, Prof. I. -
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