[meteorite-list] Tectonic Origin of Pit Chains (Iceland)

From: Paul H. <oxytropidoceras_at_meteoritecentral.com>
Date: Sat, 30 Apr 2011 12:27:35 -0500
Message-ID: <20110430132735.UFBWC.288587.imail_at_eastrmwml46>

Ferrill, D. A., D. Y. Wyrick and K. J. Smart, 2011, Coseismic,
dilational-fault and extensionfracture related pit chain
formation in Iceland: Analog for pit chains on Mars.
Lithosphere. vol. 3, no. 3, pp. 133-142.
http://lithosphere.geoscienceworld.org/cgi/content/abstract/3/2/133
http://lithosphere.gsapubs.org/content/3/2/133.abstract

"...pit craters are readily explained by movement of poorly
consolidated material downward into subterranean cavities
produced by dilational fault and extension-fracture dilation
in underlying cohesive material (basalt). Directly analogous
geomorphic patterns on Mars and other planetary bodies that
are visible in high-resolution surface imagery suggest that
similar mechanisms of deformation and surface collapse
may be at work on Mars and, potentially, other planetary
bodies." - http://www.geosociety.org/news/pr/11-07.htm

Pit Crater Chain South of Arsia Mons by Circe Verba, May
13, 2009, Hirise, The University of Arizona.
http://hirise.lpl.arizona.edu/ESP_011677_1655

Related publications are:

Ferrill, D. A., D. Y. Wyrick, A. P. Morris, D. W. Sims and
N. M. Franklin, 2004, Dilational fault slip and pit chain
formation on Mars. GSA Today; v. 14; no. 10, pp. 4-12.
PDF file at:
http://www.geosociety.org/gsatoday/archive/14/10/pdf/i1052-5173-14-10-4.pdf

Ferrill, D. A., D. Y. Wyrick and K. J. Smart, 2008, Coseismic
Pit Crater, Normal Fault, and Extensional Fissure
Formation in Unconsolidated Sediment and Basalt in
Northern Iceland. American Geophysical Union, Fall
Meeting 2008, abstract #T24A-05
http://adsabs.harvard.edu/abs/2008AGUFM.T24A..05F
http://adsabs.harvard.edu//abs/2008AGUFM.T24A..05F
Yours,

Paul H.
Received on Sat 30 Apr 2011 01:27:35 PM PDT