Last edited by Mazusho
Monday, May 18, 2020 | History

3 edition of Meteorite infall and transport in Antarctica found in the catalog.

Meteorite infall and transport in Antarctica

Meteorite infall and transport in Antarctica

an analysis of icefields as accumulation surfaces

  • 188 Want to read
  • 39 Currently reading

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

    Subjects:
  • Antarctic regions.,
  • Meteorites.,
  • Ice.,
  • Chondrites.,
  • Thermoluminescence.,
  • Wind (Meteorology)

  • Edition Notes

    Other titlesAnalysis of icefields as accumulation surfaces
    StatementP.H. Benoit and D.W.G. Sears.
    SeriesNASA contractor report -- NASA CR-207734
    ContributionsSears, D. W. G., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL17132221M

    Bulk natural TL can also be used to determine the amount of time a meteorite found in Antarctica has spent on the ice surface. This information in conjunction with terrestrial ages derived from cosmogenic radionuclides can provide insight into the relative importance of direct meteorite infall onto the ice surface and transportation of meteorites within the ice to the collection sites. Today, there are more t meteorites classified into as many as 65 classes, groups and grouplets. This huge increase in the number of meteorites can be attributed to: A heightened awareness and interest in space through NASA missions, Exploration of Antarctic ice and snowfields with modern vehicles (snow mobiles, etc), and.

      Nomad the Robot Finds a Meteorite in Antarctica - SpaceRef. [25 Jan ] In August , much of the world stopped in its tracks when NASA announced that evidence of .   Meteorites cluster in Antarctica because of the dynamics of the ice sheet: When a space rock falls on the continent, it gets covered with snow and becomes one with the ice. Often, the ice flows.

    When meteorites fall onto a large area of inland Antarctica, the subsequent ice flow dynamics direct many of them to localized surface regions called meteorite stranding zones (MSZs) concentration phenomenon (see Supplementary Note 1) allows for efficient human-led recovery missions 2,3: up until December , s meteorites (official approved names of stones classified by the Cited by: 7.   The search for meteorites is but one of the ways in which Antarctic serves as a globally unique natural research laboratory, accessible to U.S. researchers only .


Share this book
You might also like
Our blind children

Our blind children

Buddhas child

Buddhas child

Programs of national organizatons for migrant farm workers and their families.

Programs of national organizatons for migrant farm workers and their families.

The Isle of Ladies

The Isle of Ladies

role of federal corrections in Canada

role of federal corrections in Canada

Directory of alcohol and drug treatment resources in Ontario, 1986

Directory of alcohol and drug treatment resources in Ontario, 1986

Some aspects of silvicultural forest pest management

Some aspects of silvicultural forest pest management

Plant Disease: An Advanced Treatise

Plant Disease: An Advanced Treatise

In for a penny

In for a penny

Dark Horse

Dark Horse

Uncle Silas

Uncle Silas

Full and complete exposé and explanation of the method of working Stillwells handkerchief manipulation act

Full and complete exposé and explanation of the method of working Stillwells handkerchief manipulation act

Meteorite infall and transport in Antarctica Download PDF EPUB FB2

Meteorite infall, and ice and aeolian transport in creating meteorite accumulations and the importtmce of ice and aeolian transport and weathering in removing meteorites at various icefields in Antarctica. The present analysis is confined to equilibrated ordir, ary chomirites.

We use the natural thermolumiaescence (TL) toFile Size: KB. Get this from a library. Meteorite infall and transport in Antarctica: an analysis of icefields as accumulation surfaces. [P H Benoit; Derek W G Sears; United States. National Aeronautics and.

O meteorite fragments have been collected on only a dozen or so small icefields in Antarctica. The terrestrial history of these meteorites is important, both from the perspective of the effects of their ambient environment on the meteorites themselves, and on the information that can be derived in relation to ice flow and ice stability over periods of time up to 1 million : P.

Benoit and D. Sears. He initiated the U.S. Antarctic Search for Meteorites (ANSMET) nroject and led meteorite recovery expeditions in Antarctica in His name is found attached to a mineral (cassidyite), on the map of Antarctica (Cassidy Glacier), and in the Catalog of Asteroids ( Cassidy)/5.

This book, Meteorites, Ice, and Antarctica, by William Cassidy, is a unique and interesting departure from the rest of the Cambridge meteorite series because it showcases our humanity and curiosity in addition to the meteorites and the science.

This is not your typical book on meteorites or, for that matter, on Antarctica, or on glacial ice/5(7). Antarctic meteorites have much older terrestrial ages than non-Antarctic specimens and may be used to obtain information on the movement of the ice sheets in the : David Drewry.

SAO/NASA Astrophysics Data System (ADS) Title: Meteorite infall and transport in Antarctica - an analysis of icefields as accumulation surfaces Authors: Benoit, P.

Meteorite infall and transport in Antarctica [microform]: an analysis of icefields as accumulation surf Natural thermoluminescence in meteorites and their relation to meteorite concentration mechanisms in. Antarctic Meteorites LAPa Lunar basalt collected from La Paz icefield.

The US funded collection and curation of Antarctic meteorites, or the US Antarctic Meteorite program, is a cooperative effort among NASA, the National Science Foundation (NSF) and ANSMET, and the Smithsonian Institution (SI).

The NSF has decades of experience exploring this harsh environment. Meteorites in Antarctica show an older terrestrial age distribution than for wanner locations. A few types of meteorites have been found in Antarctica with ages of up to 2 Ma. In this paper, I discuss the terrestrial residence times or terrestrial ages of these by: “Meteorites” is a very good introductory book to the study of meteorites, with emphasis on their scientific importance.

The illustrations on the cover, shown at the left, are: an aerial view of Meteor Crater in Arizona, a polished section of the Thiel Mountains, Antarctica pallasite (left), and a view of one of the Cronstad, South Africa stones from the meteorite shower of (right).

The two most important reasons why meteorite hunting in some parts of Antarctica is so productive are: 1) ice movements, and, 2) ablation. The ice of the Antarctic continent is in motion. The ice grows thicker in some areas from snow accumulation, then it.

While meteorites fall in a random fashion all over the globe, the East Antarctic ice sheet is a "desert of ice," a stark scene that enhances the likelihood of finding meteorites, which are usually.

N * ' 37 Entrainment, transport and concentration of meteorites in polar ice sheets D. Drewry ^-H & f Scott Polar Research Institute University of Cambridge, Cambridge, CB2 1ER, England Glaciers and ice sheets act as slow-moving conveyancing systems for material added to both their upper and lower surfaces.

Because the. Here, we propose an interdisciplinary approach to improve our understanding of a meteorite trap in Dronning Maud Land (East Antarctica) on the Nansen blue ice field meteorite trap (– m above sea level), where more than half of the Asuka meteorites have been by: 2.

Allan Hills (commonly abbreviated ALH) is a fragment of a Martian meteorite that was found in the Allan Hills in Antarctica on Decemby a team of American meteorite hunters from the ANSMET project. Like other members of the shergottite–nakhlite–chassignite (SNC) group of meteorites, ALH is thought to have originated on : Martian meteorite.

Antarctic meteorite, any of a large group of meteorites that have been collected in Antarctica, first by Japanese expeditions and subsequently by U.S. and European teams since the discovery of meteorite concentrations there in Although meteorites fall more or less uniformly over Earth ’s surface.

deflation, direct infall, and wind movement) and loss mechanisms (sinking, weathering and search losses) with any obvious barrier to wind transport. The MIL Middle icefield has smaller, more abundant meteorite five Seasons of U.S. Antarctic Meteorites (Righter, Corrigan, McCoy and Harvey, eds.), [2] Harvey.

Introduction. The Antarctic Ice Sheet is the most productive region for collecting meteorites on Earth (Cassidy et al.,Harvey, ).Of all meteorites collected to date, more t (ca.

65%) were retrieved on the Antarctic Ice Sheet (Meteoritical Bulletin Database, ).The high Antarctic meteorite recovery probability is mainly related to three by: 2.

Antarctic meteorites have old terrestrial ages (e.g., Jull ; Jull et al. ) relative to the other meteorites and have experienced little weathering and meteorite destruction because of the Author: A.J.

Timothy Jull. The go-ahead has been given for the first British expedition to collect meteorites in Antarctica. Most of the space rocks now in collections worldwide have been picked up on the continent.

The new specimen was found by a field party from the U.S. Antarctic Search for Meteorites program (ANSMET) on Dec. 15,on an ice field in the Miller Range of the Transantarctic Mountains, roughly km ( miles) from the South Pole. A massive crater in Antarctica may have been caused by a meteor that wiped out more than 90 percent of the species on Earth million years ago, an American geologist said Wednesday.