- 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...
-
kaolinite formation.
Megabreccia occurs throughout the ba****t unit of
Northeast Syrtis. The
composition of
these megabreccias is complex, including...
-
rocks of the
northwestern Kaapvaal Craton is
spatially ****ociated with
megabreccia outcrops near the
village of
Setlagole in the
North West Province, South...
- (September 2011). "Multianalytical
characterization of silica-rich
megabreccias from the
proposed natural area of
Richat (Sahara desert, Mauritania)"...
-
Planetary Science. #1209. Tornabene, L., et al. 2009.
Parautochthonous megabreccias and
possible evidence of impact-induced
hydrothermal alteration in Holden...
- the
Namaqua Orogeny.
Steep structures are also
intimately related to
megabreccias, a term
coined by
geologists in the OCD for granite-gneiss and metasedimentary...
-
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)...
-
carbonates were
being built up in
marine shallows. The
impact site
contains megabreccia of
gigantic displaced blocks,
together with
several attributes familiar...
