Alluvium - an overview | ScienceDirect Topics
https://www.sciencedirect.com › topics
16
· Traduire cette page
Open gravel alluvium is a substrate for the 'pioneer phase' with communities of ... with different physical properties and the burial of topsoil horizons, ...

Geologic characterization of young alluvial basinfill ...
https://books.google.fr › books
10
· Traduire cette page
The thickness of alluvium penetrated by the selected drill holes ranged from ... in these lithologic classes differ from those in standa

--------------------------------------------------
Note added at 4 minutes (2022-06-28 13:33:38 GMT)
--------------------------------------------------

Alluvium (KYPSHa;0)
https://mrdata.usgs.gov › sgmc-unit
25
Traduire cette page
Geologic unit mapped in Kentucky: Alluvium; includes glacial deposits along the Ohio ... Unconsolidated > Coarse-detrital > Sandlithologies and lithology ...

--------------------------------------------------
Note added at 4 minutes (2022-06-28 13:34:31 GMT)
--------------------------------------------------

or grave "alluvium"
Geologic characterization of young alluvial basinfill ...
https://books.google.fr › books
10
· Traduire cette page
The thickness of alluvial Subsurface lithologic information was extracted from ... standand grave " alluvium " ) , were representative of downhole lithology ...

"Gravel. This term is used in geology with a precise meaning of a grain size, and not implying loosely compacted coarse sediment. In general, the term is applied to grains largers than coarse sand and finer than pebbles, i.e. 2mm to 4mm. The term, however, is also used stratigraphically and by civil engineers in a much looser sense, e.g. river gravels and glacial gravels which may range from medium sand to boulders."

You'll find this online here: https://books.google.fr/books?id=EeKvuagdoS0C&pg=PA599&lpg=P...

But I took it from the Penguin Dict. of Geology, Whitten & Brooks.

"GRAVE. Mélange naturel ou non de cailloux , graviers et sables, avec éventuellement addition de fines" [Dico-TP]

sables - 0 - 6.3mm
gravillons - 2 - 31.5mm
cailloux - 20 - 80mm
graves - 6.3 - 80mm

Note that "In some schemes "gravel" is anything larger than sand (>2.0 mm), and includes "granule", "pebble", "cobble", and "boulder" " See table here: https://simple.wikipedia.org/wiki/Particle_size_(grain_size)