(Gristhorpe) - 2006

At the centre of Gristhope bay, the Cornbash and Osgodby formations can be seen, a small sequence of Scalby formation siltstones and Oxford Clay formation outcrop. Walking north, exposures of the Scarborough formation can be examined in the cliffs.

At Horse Shoe Rocks, north of Gristhope Bay, the Yons Nab beds run across the foreshore with calcareous sandstone and oolitic limestone can be seen at very low tides. North still, towards and near Yons Nab, the silts of the Helwath Beck Member rest on caronaceous shale and below this, the Gristhorpe Plant bed can be seen.

SYSTEM / PERIOD / SERIES / STAGE					AGE (mya)
Jurassic	Late	Volgian	Portlandian		142 to 147
			Tithonian
					147 to 150
		Kimmeridgian		Late	150 to 154
				Early
		Oxfordian	Corallian		154 to 159.4
			Late Oxford Clay
	Middle	Callovian			159 to 165
		Bathonian			165 to 170
		Bajocian			170 to 177
		Aalenian			177 to 180.1
	Early	Toarcian (Late Lias)			180 to 190
		Pliensbachian (Middle & Early Lias)			190 to 195
		Sinemurian (Early Lias)			195 to 201
		Hettangian (Early Lias)			201 to 205.7

Callovian 159 to 165 MYA
FORMATIONS AND DEPOSITS		LOCATIONS
Brora Arenaceous Formation	Clynelish Quarry Sandstone	Brora
	Fascally Sandstone	Brora

Brora Argillaceous Formation	Fascally Siltstone	Brora Brora River
	Brora Brick Clay	Brora Brora River
	Glauconitic Sandstone	Brora Brora River
	Brora Shale	Brora Brora River
	Brora Roof Bed	Brora Brora River

Middle Oxford Clay Formation		Grafham Water
Early Oxford Clay Formation		Gristhorpe Cayton Bay
Kellaways
Cayton Clay Formation		Cayton Bay
Fleet Member
Abbotsbury Cornbrash Formation		Gristhorpe Cayton Bay
Osgodby Formation	Hackness Rock Member	Gristhorpe
	Langdale Member	Gristhorpe
	Redcliff Rock Member	Gristhorpe Cayton Bay

Bajocian 170 to 177 MYA
FORMATIONS AND DEPOSITS	LOCATIONS

Late Inferior Oolite			Burton Bradstock Bearreraig Bay West Bay
Middle Inferior Oolite			Burton Bradstock West Bay
Ravenscar Group	Scalby Formation	Moor Grit Member	Gristhorpe Scalby Ness
	Scarborough Formation		Cloughton Wyke Gristhorpe
	Cloughton Formation	Gristhorpe Member	Cloughton Wyke Gristhorpe
		Lebberston Member	Cloughton Wyke
		Yons Nab Beds	Gristhorpe
		Sycarham Member	Cloughton Wyke Gristhorpe
Dogger Formation			Saltwick Bay Whitby Sandsend Ravenscar
Bearreraig Sandstone Formation		Garantiana Shale Member	Glasnakille Faoilean
		Dark grey fissile mudstone

1:250 000 Geological Map of Gristhorpe Geological Maps are sold either Flat or Folded for Solid, or Seabed geology. Special editions may be available for certain locations. For a complete list click the link below. Click here to BUY ONLINE from our Store

1: 50 000 Geological Map of Gristhorpe Geological Maps are sold either Flat or Folded for Solid, Drift or combined geology. Special editions may be available for certain locations. For a complete list of 1: 50 000 maps, click the link below. Click here to BUY ONLINE from our Store