The BGS Lexicon of Named Rock Units — Result Details

Head Gravel [Not Recommended: Use HEAD]

Computer Code: HEG Preferred Map Code: notEntered
Status Code: Index Level
Age range: Quaternary Period (Q) — Quaternary Period (Q)
Lithological Description: Polymict deposit derived locally from older gravel-rich deposits. Formed mostly by periglacial solifluction/gelifluction but may include hillwash or soil creep (usually termed "colluvium"). [Generic description]. Essentially comprises gravel with subordinate sand and clay depending on upslope source and distance from source. [Description from East Anglian data]. Specifically a bedded limestone gravel in the Moreton-in-Marsh area. [Description from academic papers and BGS Memoirs].
Definition of Lower Boundary: none recorded or not applicable
Definition of Upper Boundary: none recorded or not applicable
Thickness: none recorded or not applicable
Geographical Limits: none recorded or not applicable
Parent Unit: Not Entered (?)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
none recorded or not applicable
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable