clastic Význam & definícia

Príklady clastic

• The initial stage of sedimentation in these basins was characterized by terrestrial and shallow marine deposits that consist of both clastic and carbonate deposition.

• The resulting channel bars will have provided more extensive areas of clastic substrates, which will have favoured the fern-pteridosperm complex.

• The predominant fill-type is a clastic-textured, orange/brown biomicrite containing abundant comminuted brachiopod material.

• The system controlling the composition of clastic sediments.

• Extensional faulting created local accommodation space for the redeposition of material and focussed clastic supply routes into the basin at transfer zones.

• Stratigraphically diagnostic fossils are scarce or absent in many of these clastic sequences, which furthermore differ markedly in lithological succession between different outcrop areas.

• Clastic layers up to 10 cm thick are common within thick seams.

• This may partly be because the pteridosperms were probably growing on the levees and other raised areas in the forest with clastic substrates.