Skip to main content Accessibility help
×
Home

Formation of Lunar Glassy Spherules: A Dynamical Model

  • A. Carusi (a1), A. Coradini (a1), M. Fulchignoni (a2) and G. Magni (a2)

Abstract

Glassy spherules ranging from 200 μ to 62 μ in size have been separated from lunar dust samples No. 12001.73, 12057.60, 12070.37. Most of them are regular in size (spherical, ellipsoidic, dumbbell, teardrop, etc.); some are irregularly shaped.

A tentative dynamical model of the evolution of a rotating melted spherical drop of homogeneous glassy material has been built in order to explain the observed forms. We suppose such fluid to be originated from the impact of meteoroids on the lunar surface. The energy balance between the projectile (meteoroid) and the target (lunar surface) has been calculated supposing that the impact gives rise to strong shock waves in both bodies.

Equations of the model have been solved numerically and a good agreement between these results and the experimental data regarding small spherules has been obtained.

    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      Formation of Lunar Glassy Spherules: A Dynamical Model
      Available formats
      ×

      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      Formation of Lunar Glassy Spherules: A Dynamical Model
      Available formats
      ×

      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      Formation of Lunar Glassy Spherules: A Dynamical Model
      Available formats
      ×

Copyright

References

Hide All
Al'tshuler, L. V. Bakanova, A. A., and Trunin, R. F.: 1961, Soviet Phys. JEPT 15, 65
Fulchignoni, M., Funiciello, R., Taddeucci, A., and Trigila, R.: 1971, ‘Apollo 12 Lunar Science Conference’ (unpublished proceedings).
Gault, D. E. and Heitowit, E. D.: 1963, Proceedings of Sixth Hyper Velocity Impact Symposium, Cleveland Ohio, April 30, May 1—2 2, 419.
Kormer, S. B., Urlin, V. D., and Popova, L. T.: 1962, Soviet Phys. 3, 1547.
Isard, J. O.: 1971, ‘Apollo 12 Lunar Science Conference’ (unpublished proceedings).
Lombard, D. B.: 1961, ‘The Hugoniot Equation of State of Rocks’, URCL 6311, University of California, Lawrence radiation laboratory.
Rice, M. H., Mac Queen, R. G., and Walsh, J. M.: 1958, in Turnbull, P. (ed.), Solid State Physics 4, 63, Academic Press.
Whipple, F. L.: 1968, in Kresák, Ľ. and Millman, P. M. (eds.) ‘Physics and Dynamics of Meteors’, IAU Symp. 33, 481.

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed