- are so
large that the
brecciated nature of the rock is not obvious.
Megabreccias can be
formed by landslides,
impact events, or
caldera collapse. Breccias...
-
northeastern and
southwestern parts, impact-generated
polymict megabreccias. The
megabreccias are
composed of
blocks of both ba****t
granitoids and supracrustal...
- and
gabbros that have
undergone hydrothermal alteration, and a
central megabreccia. The
structure is also the
location of
exceptional ac****ulations of Acheulean...
- (September 2011). "Multianalytical
characterization of silica-rich
megabreccias from the
proposed natural area of
Richat (Sahara desert, Mauritania)"...
-
kaolinite formation.
Megabreccia occurs throughout the ba****t unit of
Northeast Syrtis. The
composition of
these megabreccias is complex, including...
-
remaining breccia contains fragments ranging in size from
small grains to
megabreccia blocks 100 m (330 ft) long.
Undisturbed strata lie 100
metres (330 ft)...
- doi:10.1029/2001JE001678. Grant, J. et al. 2008.
HiRISE imaging of
impact megabreccia and sub-meter
aqueous strata in
Holden Crater, Mars. Geology: 36, 195-198...
-
Planetary Science. #1209. Tornabene, L., et al. 2009.
Parautochthonous megabreccias and
possible evidence of impact-induced
hydrothermal alteration in Holden...
-
constructed in the
terrain of the San
Antonio formation,
which forms megabreccia in the caldera. The
Lomas Bayas caldera (diameter 13
kilometres (8.1 mi))...
- near the
eastern boundary of
Death Valley National Park. It
features megabreccia and
other rock formations, petroglyphs, and
wildlife of
various kinds...
