Load casts are bulges, lumps, and lobes that can form on the bedding planes that separate the layers of sedimentary rocks. The lumps "hang down" from the upper layer into the lower layer, and typically form with fairly equal spacing.

These are known as load casts. In between the load casts, some of the mud was forced upwards, creating the upward-pointing features known as flame structures. Load structures may be modelled by floating a piece of cling film onto water in a …

Load cast (aka ball-and-pillow structures) are sandy lobes of mud that can form when dense mud settles down into water-saturated mud as a result of compaction or disturbance. They may be be connected to source bed or may be isolated from it.

lithosphere, rigid, rocky outer layer of Earth, consisting of the crust and the solid outermost layer of the upper mantle. It extends to a depth of about 60 miles (100 km). It is broken into about a dozen separate, rigid blocks, or plates (see plate tectonics).

The expression "load cast", sometimes also called a load structure, refers to a load (the denser layer) sinking into its underlying (less dense) cast (mold). Related to load casts are flame structures, load waves, and anticrests. Extreme developments of load casts are pseudo-nodules and ball-and-pillow structures. In these extreme cases, the ...

A drill core showing a load cast, a sedimentary structure in which denser sand (light-colored) compresses an underlying water-rich mud (dark-colored) layer, deforming (squirting into) the layer. To better see the shape, note the flat line wrapping around the core from the left.

Load casts develop by the differential sinking of the sediment, while still soft, into less dense sediment below. Load ‘casts’ are not strictly casts, as they do not infill an existing depression as in the case of flute casts (see flute mark).

Load casts play a crucial role in interpreting ancient marine environments because they reflect the conditions under which sediments were deposited and subsequently altered. Their study helps researchers understand the interplay between sediment transport, compaction, and …

2015年6月19日 · Load casts form where the higher density sand has partially sunk into the underlying mud to form downward-facing, bulbous structures: the mud may also become forced up into the overlying sand bed to form a flame structure.

2013年1月1日 · Load casts (Figure L6(B)) are probably the commonest and most widespread form of load structure, occurring in fluvial, lacustrine, deltaic, shallow-marine and deep-water environments (Allen, 1982). In deep water, turbidity currents suddenly emplace sand beds centimeters to meters thick upon substrates of soft mud.