Introduction: The first glacial deformations of an extraterrestrial ice sheet have been discovered and documented at the Martian south polar cap in Mars Orbital Camera (MOC) images [1-4]. Within the south polar cap various structural deformational features have been found, including boudinage, folds, and faults [1-2] (Fig. 1). These features are also found in terrestrial glaciers [5-7]. Mars pr...

_Abstract. Two major hypotheses have been advanced for the formation of the long wavelength (100-300 km) undulations of oceanic basement and overlying sediments developed in the central Indian Ocean basin: whole layer folding (buckling) and local thickening (inverse boudinage). Using appropriately scaled two-layer analogue models for the oceanic lithosphere comprising a brittle layer above a du...

Small-scale foliation boudinage structures occur in rocks that were sampled drill core from the Mount Isa Cu deposit, northwest Queensland. The necks of plunge gently to north and south as a result layer normal shortening parallel extension steeply west-dipping Urquhart Shale. Detailed petrographic analysis has identified an initial rim quartz dolomite, followed by infill replacement pyrrhotite...

Intraplate compressional deformation in the Central Indian Basin is expressed as linear E-W trending topographic undulations and geoid anomlies with characteristic spacings of approximately 200 km. To elucidate the nature of this deformation, we develop models of an oceanic lithosphere in a state of horizontal compression. The lithosphere is treated as a viscous or plastic layer of uniform stre...

A quartz-pyroxene rock interpreted as a banded iron formation (BIF) from the island of Akilia, southwest Greenland, contains (13)C-depleted graphite that has been claimed as evidence for the oldest (>3850 million years ago) life on Earth. Field relationships on Akilia document multiple intense deformation events that have resulted in parallel transposition of Early Archean rocks and significant...