| 词条 | Horsehay Sand Formation |
| 释义 |
| name = Horsehay Sand Formation | period = Bajocian | age = {{fossilrange|Bajocian|Bathonian|Bajocian-Bathonian}} | image = | imagesize = | caption = | type = Geological formation | prilithology = Sandstone | otherlithology = Mudstone, Siltstone | unitof = Great Oolite Group | subunits = | underlies = Sharp's Hill Formation, Taynton Limestone Formation | overlies = Northampton Sand Formation, Whitby Mudstone Formation | thickness = up to {{Convert|7|m|ft|-1}} | area = | map = | map_caption = | location = | coordinates = | region = Europe | country = {{flag|England}} | extent = Oxfordshire, Northamptonshire, Buckinghamshire | namedfor = | namedby = | year_ts = | location_ts = Horsehay Quarry, Duns Tew | coordinates_ts = | paleocoordinates_ts = | region_ts = | country_ts = | thickness_ts = }} The Horsehay Sand Formation is a geological formation in England. Part of the Great Oolite Group, it was deposited in the Bajocian to Bathonian stages of the Middle Jurassic, the lithology consists of weakly cemented sand and sandstone, with thin interbeds of mudstone and siltstone. Rootlets and lignitic debris are common.[1]. It is the lateral equivalent of the Chipping Norton Limestone and the lower part of the Rutland Formation References1. ^{{cite web |url= https://www.bgs.ac.uk/lexicon/lexicon.cfm?pub=HYSA|title= Horsehay Sand Formation|last= |first= |date= |website= |publisher= British Geological Survey|work = BGS Lexicon of Named Rock Units|access-date= 31 July 2018|quote=}} {{UK-geologic-formation-stub}}{{Jurassic-stub}}{{England-stub}} 5 : Jurassic England|Rock formations of England|Geologic formations of the United Kingdom|Jurassic System of Europe|Bathonian Stage |
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