• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 77
  • 39
  • 19
  • 13
  • 3
  • 2
  • 1
  • 1
  • 1
  • 1
  • Tagged with
  • 191
  • 28
  • 22
  • 21
  • 21
  • 20
  • 19
  • 19
  • 19
  • 18
  • 17
  • 17
  • 15
  • 14
  • 12
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Magnesium as an impurity in calcite growth : thermodynamic and kinetic controls on biomineral formation

Davis, Kevin James 05 1900 (has links)
No description available.
12

Burial diagenetic events, hydrocarbon emplacement and mineralisation in Dinantian limestones of northern England

Hollis, Catherine Elizabeth January 1995 (has links)
Published mineralogical and diagenetic studies of the Derbyshire Platform focus upon the source of Mississippi - Valley type (MVT) mineralising fluids and hydrocarbon deposits or upon the diagenetic history of the area. This study aims to integrate these fields by developing a complete model for the geochemical evolution of the Derbyshire Platform and the surrounding basins, in line with the regional Variscan tectonic history of the area and the controls this imposed upon fluid flow. The study area is compared to diagenetic events on the southern margin of the Askrigg Platform and the adjacent Craven Basin which are thought to have been contemporaneous with events on the Derbyshire Platform. A sequence of late diagenetic calcite cements can be recognised on the Derbyshire Platform within vein systems and cross cutting relationships between veins and variations in cement type illustrate there were several phases of cementation. On the Askrigg Platform, burial calcite cements can be identified within veins and intergranular pores. On both the Derbyshire and the Askrigg Platforms, burial calcite cements were contemporaneous with hydrocarbon emplacement and MVT mineralisation. Compacting Dinantian - Namuiran shales in basins adjacent to the Derbyshire and Askrigg platforms offer the most likely source of fluids. Trace metals, hydrocarbons and fluids were progressively released from overpressured basins onto the platforms along fault systems. Fluids circulated on the platform within minor faults and fractures. Restricted volumes of fluid were released from the basins during the waning effects of Carboniferous extension, but the onset of Variscan compression in the mid-late Westphalian led to reactivation of fault systems and massive dewatering of the basins onto the platform. A model can therefore be established relating fluid flow to Variscan tectonic events in northern Britain.
13

Investigations into the fluorescence of calcitic speleothems /

Van Beynen, Philip Edward. January 1998 (has links)
Thesis (Ph.D.) -- McMaster University, 1998. / Includes bibliographical references (leaves 143-151). Also available via World Wide Web.
14

Effect of reaction conditions and organic additives on the morphologies of synthetic calcium carbonates/

Altay, Esra. Shahwan, Talal R.A. January 2006 (has links) (PDF)
Thesis (Master)--İzmir Institute of Technology, İzmir, 2006 / Keywords: Calcite, morphology, aragonite, polymorph, composite, organic additive. Includes bibliographical references (leaves. 82-86).
15

Characterization of late-diagenetic calcites of the Devonian Southesk-Cairn Carbonate Complex (Alberta Basin) constraints from petrography, stable and radiogenic isotopes, fluid inclusion and organic matter maturity data /

Aubet, Natalie. January 2010 (has links)
Thesis (M.Sc.)--University of Alberta, 2010. / Title from PDF file main screen (viewed on Apr. 13, 2010). A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Master of Science, Department of Earth and Atmospheric Sciences, University of Alberta. Includes bibliographical references.
16

Rocky Mountain carbonate spring deposit development

Rainey, Dustin Kyle. January 2009 (has links)
Thesis (Ph.D.)--University of Alberta, 2009. / Title from PDF file main screen (viewed on Sept. 8, 2009). "A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Doctor of Philosophy, Earth and Atmospheric Sciences, University of Alberta." Includes bibliographical references.
17

Index of refraction of calcite for X-rays

Hatley, Charles Cleveland, January 1900 (has links)
Thesis (Ph. D.)--Columbia University, 1925. / Reprinted from the Physical review. 2d. ser. v. 24, no. 5. Nov. 1924.
18

Comparison of the red glacio-lacustrine clay sediments in northern and eastern Wisconsin [Part I. Part II]. A new procedure for the determination of calcite and dolomite

Petersen, Gary W., January 1965 (has links)
Thesis (Ph. D.)--University of Wisconsin, 1965. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
19

Observations et expérimentations géomicrobiologiques et physicochimiques des concrétionnements carbonatés continentaux actuels et fossiles.

Adolphe, Jean Pierre, January 1900 (has links)
Th.--Sci. nat.--Paris 6, 1981.
20

Interatomic distances and amplitudes of vibration in calcite type crystals /

Felty, Evan Jerome January 1963 (has links)
No description available.

Page generated in 0.2986 seconds