Sentence examples for depositional structures from inspiring English sources

This study suggests that reefs, over the timescales at which cycles of reef 'turn-on' and 'turn-off' operate (the centennial to millennial timescale), can not only re-establish successfully, but also that regrowth may be characterised by the establishment of near identical reef-building communities and the development of near identical depositional structures.

The sandy-debris-flow sandstones have abundant internal depositional structures.

Depositional structures including normally graded bedding (section A of the Bouma sequence, Fig. 3g, j), parallel bedding, and sandy laminations, as well as load, flute, and groove casts at the bottom of graded bedding, can be observed (Fig. 2e, f).

A turbidite is the result of fluid transport, and the depositional structures and components of turbidity-current sandstones are not as much as those of sandy-debris-flow sandstones.

The original depositional structures of sandstones were destroyed to some extent (bedding was destroyed and different lithologies became mixed), and the detrital grains were realigned, leading to the mixed grain-size distribution and poor sorting; however, the constitution and grain-size fraction of the detrital grains were not changed.

Sampling was carried out for geochemical analysis to determine the relation between the depositional structure of the mud content of the inner blocky-shaped sandstone and the associated muddy debris flow and laminated shale.

According to dam composition material and sedimentological features, landslide dams were categorized into three types: dams mainly composed of large boulders and blocks; dams composed of unconsolidated fine debris; and dams with partly intact rock strata at the base topped by large boulders and blocks or soil with rock fragments, showing two-layered or three-layered depositional structure.

Internally, the DBs exhibit cross-stratification patterns typical of PDC deposits, mainly aggrading and stoss-depositional structures (e.g., Schmincke et al. 1973; Cole 1991).

Results indicate that all deposits present a soil-like aspect and although they record several depositional conditions, sedimentary structures and textures are similar among different facies.

Elongated zones of high horizontal K along the river course are observed at both sections, indicating a link between riverbed structures, depositional environment and flow regime.

Significance of oil exploration lies in the proper evaluation of hydrocarbon potential (Dow 1974) because a good hydrocarbon reserve only forms when there are good source rock, favourable depositional and tectonic structure, and proper thermal maturation (Otis and Schneidermann 1997).