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Tuesday, July 14, 2020 | History

3 edition of Incipient melt formation and devitrification at the Wanapitei impact structure, Ontario, Canada found in the catalog.

Incipient melt formation and devitrification at the Wanapitei impact structure, Ontario, Canada

Burkhard O. Dressler

Incipient melt formation and devitrification at the Wanapitei impact structure, Ontario, Canada

by Burkhard O. Dressler

  • 47 Want to read
  • 7 Currently reading

Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va .
Written in English

    Subjects:
  • Annealing.,
  • Crystallization.,
  • Metamorphism (Geology),
  • Melting.,
  • Impact melts.,
  • Rocks.,
  • Glaciers.

  • Edition Notes

    StatementB.O. Dressler, D. Crabtree, and B.C. Schuraytz.
    Series[NASA contractor report] -- NASA-CR-204694., NASA contractor report -- NASA CR-204694.
    ContributionsCrabtree, D., Schuraytz, B. C., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15486972M

    A crop that has a higher resistance against the negative impact of stress. Stronger cell walls. A stronger defense against plant infections and pests. A stronger defense against temperature differences and/or extreme temperatures. A higher quality and yield. A higher dry weight content of the end product. defined with respect to certain types of structure, largely in the light of experience gained since in the Beilstein Institute and elsewhere. The system is now extended to deal, on the one hand, with organic-chemical conformations, and, on the other, with inorganic- chemical configurations to ligancy six.

      Guidance documents are administrative instruments not having force of law and, as such, allow for flexibility in approach. Alternate approaches to the principles and practices described in this document may be acceptable provided they are supported by adequate scientific justification. Alternate approaches should be discussed in advance with the relevant program area to avoid the possible. Incipient melt formation and devitrification at the wanapitei impact structure ontario canada Why sex matters Scholars in the field Za pravoe delo Bruckner ikonographie Career development for individuals with disabilities Epa's office of solid waste management programs Stages of .

    Start studying Chapter Learn vocabulary, terms, and more with flashcards, games, and other study tools. AGROMONT CA Aluminiumhydrosilikat, CAS-Nr. Mineralogische Zusammensetzung Mineralogical Composition Montmorillonit min. 65 % Montmorillonite Sonstige Minerale max. 35 % Other Minerals Korngrößenverteilung Particle Size Distribution Nasssiebrückstand > 63 µm max. 7 % Wet Sieve Residue Trockensiebrückstand > 63 µm max.


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Incipient melt formation and devitrification at the Wanapitei impact structure, Ontario, Canada by Burkhard O. Dressler Download PDF EPUB FB2

Incipient melt formation and devitrification at the Wanapitei impact structure, Ontario, Canada B. DRESSLER I*, D. CRABTREE 2 AND B. SCHURAYTZ 1,3 1Lunar and Planetary Institute, Bay Area Boulevard, Houston, Texas. 13, USA 2Geosciencc t,aboratories, Ontario Geoservices Centre, Ramsey Lake Road, Sudbury, Ontario P3E 6B5.

Get this from a library. Incipient melt formation and devitrification at the Wanapitei impact structure, Ontario, Canada. [Burkhard O Dressler; D Crabtree; B C Schuraytz; United States.

National Aeronautics and Space Administration.]. Journal list menu. Journal. Articles. Incipient Melt Formation and Devitrification at the Wanapitei Impact Structure, Ontario, Canada D. Crabtree. The Wanapitei impact structure is approximately 8 km in diameter and lies within.

TECTONOPHYSICS I ELSEVIER Tectonophysics () Breccia formation at a complex impact crater: Slate Islands, Lake Superior, Ontario, Canada B.O. Dressier *, V.L. Sharpton Lunar and Planetary Institute, Bay Area Boulevard, Houston, TXUSA Received 21 May ; accepted 6 January Abstract The Slate Islands impact structure is the eroded remnant of a ~30 Cited by: Dressier B.

O., Crabtree D. and Schuraytz B. () Incipient melt formation and devil:rification of glasses at the Wanapitei impact structure, Ontario, Canada.

Meteoritics and Planetary Sci- Cited by: Q: What is Incipient melt formation and devitrification at the Wanapitei impact structure, how does it happen, and how can it be prevented.

A glass is by definition a liquid at all temperatures. Compositionally a typical glass consists of the 'glass (or network) formers' (SiO 2 and B 2 O 3), fluxes (also called alkaline metals, K 2 O and Na 2 O), and the network (or matrix) modifying alkaline earths (CaO, BaO, PbO, ZnO). Full text of "Breccia Formation at a Complex Impact Crater: Slate Islands, Lake Superior, Ontario, Canada" See other formats NASA/CR— / ^ c^y 2(fm^ ntsprinted from / TECTONOPHYSICS INTERNATIONAL JOURNAL OF GEOTECTONICS AND THE GEOLOGY AND PHYSICS OF THE INTERIOR OF THE EARTH Tectonophysics () 1 Breccia formation at a complex impact crater:.

The thermal oxidation of silicon in various gaseous atmospheres has been studied and the growth rate data and activation energies determined.

The oxide layers contained defects, the density of which increased with increasing temperature and time; microcracks were also observed. The devitrification of these oxides was studied at ° C and above in argon-oxygen atmospheres; water Cited by: A FORMATIONAL MODEL FOR AN IMPACT MELT-BEARING BRECCIA DYKE AT THE MISTASTIN LAKE IMPACT STRUCTURE, LABRADOR, CANADA.

A.E. Pickersgill 1, G. Osinski, and M.M. Mader1, Centre for Planetary Science and Exploration, Dept. of Earth Sciences, University of Western On- tario, Richmond Street, London, ON, Canada, N6A 5B7 ([email protected]).

Recent destructive earthquakes have clearly shown that near-surface geological conditions play a major role in the level of ground shaking in urban areas. In Canada, Montreal is ranked second for seismic risk after Vancouver considering its population and regional seismic hazard.

The city is largely built on recent unconsolidated marine and river deposits and most of its infrastructure is old Cited by: A multistage model for the origin and emplacement of impact melt rocks and the formation of impact ejecta is proposed for the Mistastin Lake impact structure based on a synthesis of the field and.

Assessing the Structural and Alteration Controls on Gold Mineralization at Detour Lake Mine, Ontario, Canada: Authors: Dubosq, Renelle: Date: Abstract: The giant Detour Lake deposit is a Neoarchean orogenic Au ore body located in the northwestern Abitibi district within the Superior : Renelle Dubosq.

Petrographic and geochemical observations also confirmed that dissolution occurred under deep-burial conditions after incipient pressure solution. Dissolution was not confined to the centers of dolomitized grains, as is commonly seen when remnant calcitic grains dissolve out during the advanced stages of replacement by: Experimental devitrification of natural rhyolitic glass was undertaken in an attempt to produce, under known conditions, analogs of naturally devitrified rocks.

The results should facilitate the recognition and interpretation of devitrification by: Tectonic and Eustatic Controls on Deposition of the Harmon, Cadotte and Paddy Members of the Albian Peace River Formation, Alberta and British Columbia, Canada Robin A. Buckley 1 ; Guy Plint 1 (1) Earth Sciences, University of Western Ontario, London, ON, Canada.

Overview of engagement process. In response to the consultation on the proposed Teat Antiseptic Product Monograph from March 6, to May 6,Health Canada received almost 50 responses from stakeholders.

The monograph describes the requirements necessary to receive market authorization for antiseptic teat solution products. Private Sector IC&I Waste Management System in Ontario 2.

Ontario Waste Management Industry Statistics IC&I Waste Generators The Province of Ontario had a population of million in There arebusinesses in Ontario;are employer businesses, and File Size: KB. nence). My plan was to produce a book only a little longer than Ostrogors­ ky's, while assigning each period treatment more nearly corresponding to its importance (at least for a non-Serbian readership).

In the end, my book turned out to be about a third longer than Ostrogorsky's Because myAuthor: Warren Treadgold. Basic Life Sci.

;xv-xviii, In vivo body composition studies. Proceedings of an international symposium. June, Toronto, Ontario, Canada. km ( miles) ⓘ Miron Quarry, Montréal, Québec, Canada km ( miles) ⓘ Demix-Varennes quarry, Saint-Amable sill, Varennes & St-Amable, Lajemmerais RCM, Montérégie, Québec, Canada km ( miles) ⓘ Poudrette quarry (De-Mix quarry; Demix quarry; Uni-Mix quarry; Carrière Mont Saint-Hilaire; MSH), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada.for the crystallization and differentiation of Fred's flow.

Both of these komatiitic lava flows developed layering during differentiation and cooling. In Fred's Flow the layering has been divided into four zones by Arndt et al. (): a brecciated or spinifex upper unit, a gabbroic interior, a lower cumulate zone and a basal zone (Fig.

1).Many aspects of the history of natural glasses are related to the physicochemical properties of silicate melts. Glasses are thermodynamically unstable; with time and under a variety of conditions, they become crystalline.

When little water is present, devitrification may be described in much the same terms as those which apply to the crystallization of silicate by: