Final answer:
Poorly sorted sediments have a wide range of particle sizes and angular shapes, indicating proximity to their source and minimal transport. Well-sorted sediments consist of particles of similar size and are often well-rounded, suggesting they have traveled farther and undergone more weathering.
Step-by-step explanation:
Poorly sorted sediments are those in which the particles vary widely in size, indicating they have not traveled far from their source and have not undergone substantial weathering or transport processes. Well-sorted sediments, on the other hand, are composed of particles that are approximately the same size, suggesting a longer distance of transport from their source, resulting in more uniform grain sizes through processes like water or wind sorting.
Grain shape is another factor that distinguishes these sediments. Well-rounded grains usually indicate longer travel distances, as the particles have had more time to be weathered and smoothed by the elements. In contrast, grains with angular edges suggest a lack of prolonged transport and are typically found closer to their origin.
Well-sorted sediments often feature grain rounding or high sphericity, which is indicative of extensive travel from their source. Conversely, poorly sorted sediments demonstrate a much more varied grain size distribution and are often more angular, reflecting their proximity to the source and minimal transport.