96 Mr. Fm-ey's Geological Observations 



strata, containing accidental beds of Gypsum, at Newark 

 and Hau ton near it ; at Tuxford, and Laxton, Askham and 

 Easi-Markliam near it ; at South and North Whealley ; near 

 Thorne, Crowle, &c. ; beds of blue Marl-slone also occur 

 in it, at Honkerton, Kirklington, Maplebeck, Sutton on 

 'i'rent, &c. IF/iile Sand in WestMarkham, as already men- 

 tioned, &c.: and these Red Marl strata, abut against the fault 

 on its E side, to somewhere NW of Howden*; when 

 the Blue Lias strata of Long-Bennington, Coddinglon, and 

 thence E of the Trent to Burton on Stratherf succeed, and 

 which strata soon after are lost under Peat and Gravel, and 

 I suppose, abut on the fault, NNW of Howden : after 

 these, other strata higher in the series, range and al)Ul in 

 like manner, under Gravel probably, and then the Batfi 

 Freeslone wiUiLi^s, along which the Konian' Road proceed'S 

 from Stanjford E of Grantham, Ancaster, Lincoln, Spittal, 



the Yore Rirer and of Boroughbridge, and E of Ripon, whichis as far N as 

 my information of ihe eastern ecij^c of tlie Yellow Lime (covered by Grsvelj 

 extends; crossing over tlierefore E to Sessay, ;ind following the great fault 

 above described" near Eusingwold, S of Stiliingtoa, S of bherilf" Hutton, 

 ^ of Crambe; turning then S along the vale of the Derwent to Butter- 

 Cr.iinbe, and ih.cu SE to join tlie fault sgain somewhere \V of Pocklington, 

 and thence following the fault already described to Nottingham, all the 

 large intervening space, including almost all the vale of York and Sher- 

 wood Forest, has as I am told, an entire surface of Gravel, Peat or other ex- 

 traneous matters (according to my definition of each, Derbyshire Report i. 

 p. 181), that prevent the regular or undisturbed stratificatifui from being 

 seen ; a circumstance which 1 particularly request assi. :ance upon frtini your 

 readers, who know or may happen to travel anywhere within this tract, 

 and particularly that they would state, wh:tt tiie two remarkable Hills W 

 of Selby, called Hambleton Hough and Brayton Barfe are composed of? 

 since they can hardly be formed of alluvia ? 



• In the north-e.-.st angle of the great fault, a piece of these same mea- 

 sures seems to remain on the surface, and produces a hail-pl.ister or Gypsum 

 Ouarrv near to the Derwent, SW of Westow: and wU'ichGypMim and Red 

 ilurl are probably in their proper relative situation to tlie Lin's f strata, that 

 might be found in Lci;pir.gtun aiid Bugthorpe (aUo within the angle of the 

 faiilt), as I judge, from the Pentacrinus or five-rayed Encrinus there found), 

 (as mentioned Philosophical Transactions, No. 11 ti) especially if it be true, that 

 this curious animal remain, is found in the British scries, mdy in Lias sirala f ; 

 on which <juebLion I particularly wish the assistance of your readers; for iJF 

 they h:ive also a pla:e much higher in tliC series, ii may otherv,ise explain 

 this part, and the appearance also of these fossils in tlie banks of the Swale at 

 TopclilTe (and perhaps at Allcrtou Mauileverer ?) which has induced Mr. 

 Smith to conclude, that the Lias strata are there to be foui.d ? and as upper- 

 measures to the Red Marl and Gypsum, said to be found near I'hirsk ? : and 

 as all the suppositions that can be made on so new a subject of investigation, 

 ought to have a candid examination, arc there any local beds of Red Marl 

 and Gyp»um, much higher in tiie British series than the Bath Ereestone ? 

 that might account for the Gvpsum near Westow, and pei haps at Bilton, 

 Green Hammeriou and 8 miles Lof Knarcsborough, in the la. ks of the Nidd 

 naar those places; Wof Thirsk,and inLazsnby near the mouth of the Tees, 

 &c. instead of the explanation that I intend to ofler licrciii, regarding all 

 but the first and last of the above mentioned occurrences of Gypsum I 



Wintrincham, 



