Stratigraphy, lithology, and sedimentary features of Quaternary alluvial deposits of the South Platte River and some of its tributaries east of the Front Range, Colorado

Impact of a pre‐existing transverse drainage system on active rift stratigraphy: An example from the Corinth Rift, Greece

“…Sandstone formation displays rare weakly developed sets of trough cross-stratification possibly representative of juvenile unit bar development (as stratification does not extend through entire sand units where present) or 3D dune development (Gloppen & Steel, 1981;Reading 1996) during the later stages of flows. These units are largely reworked and partially eroded by further mass-flow events (Lindsey et al, 2005) leading to limited preservation. Boundaries between sets (and the elements themselves) are sharp but not erosional.…”

“…Rapid finer-grained sediment dumping from suspension in flows, with periods of high energy allowing upper plane-bed conglomerate deposition. (Lindsey et al, 2005;Franke et al, 2015). Massive silty sandstone with intermittent clasts Crudely bedded, poorly-sorted silt to coarse grade sand.…”

Provenance of fluvial terrace sediments within the Waipaoa sedimentary system and their importance to New Zealand source-to-sink studies

“…Their age and distribution are often linked to tectonic, eustatic or climatic events (e.g., Blum and Price, 1998;Schumm et al, 2000). Fluvialterrace sediment composition is determined by factors such as climate, relief, source-rock petrology, and tectonic setting; changes in terrace lithology through time may reflect evolution of the geologic landscape, as well as catchment drainage development (e.g., Jones, 2000;Lindsey et al, 2005). Changing fluvial sediment compositions should also be recorded in the alluvial fill of the floodplain as well as the deltaic and marine segments of the system.…”

Downstream rounding rate of pebbles in the Himalaya

“…The rounding of pebbles found within conglomerates has long been linked to abrasion that occurs prior to deposition as pebbles are transported by rivers, with greater rounding being typically associated with increased transport distance (Mills, 1979;Russell, 1980;Lindsey et al, 2007;Yingst et al, 2016). This also applies to modern rivers: the shape of pebbles has been used to locate sediment sources and define the control exerted by hydraulic transport on abrasion processes (Wentworth, 1919;Lindsey et al, 2005;Domokos et al, 2009;Litty and Schlunegger, 2017;Gale, 2021). The use of pebble roundness is not limited to 1.2 Measurement of shape indices: technological advances and challenges Many studies are either based on direct measurements in the field (Wentworth, 1922(Wentworth, , 1923Litty and Schlunegger, 2017) or the manual tracing of outline of pebbles using the 2D images (Quick et al, 2019).…”