Vol. 58.] THE RED SANDSTONE-ROCKS OF PEEL. 
¢ 
33. The Rep Sanpstonr-Rocxs of Perret (Istzp or Man). By 
Wiriiam Boyp Dawkins, M.A., D.Sc., F.R.S., Professor of 
Geology in Owens College (Victoria University), Manchester. 
(Read May 28th, 1902.) 
[Prats XXXITI—Map.] 
ConTENTs. 
Page 
Belin Groucho y. ccm. sce ts ise ee ei olateats Sth eat Se yee adac seme eee 633 
Il. The Lower Red Sandstones and Brockrams of Ballaquane and 
CBs a IE Crate e CORE aa Ge ie de rae Be, NCEE Ua Ae LO RA 633, 
Iil. The Red Sandstones of the Gob and Traie Fogog ..................... 636 
IV. The Upper Sandstones, Brockrams, and Limestones of the Stack 
SUSTSTESS th Nene bp tet hg of Ney. a ge ENn le eo a RA 637 
rubinve: Classiticatiom of the ROCKS Veto inetesinae eso souseut cele ge sodashoradee 637 
VI. The Range of the Peel Sandstones and Stack Series to the North- 
easpralome the .O oast oc consere casement secon sere ehcscnc ne bssnsecey mentees 633 
eee rhepRance of the Rocks: Imlaudss 2. ccs2ssn.cssecsts occ seen det conn.aennes og 
PORES nents PCrMIAMPACE 22 See cris cya dciionwels steaiasisinatancaronie’se.d ollosede lees oodeees ee 640 
ies (Ene Shearing and Haul time. orca0os dea dencissestvoscoonestt sd den'sekionates 642 
X. The Probable Source of the Iron in the Red Rocks ..................... 646 
BODIES nTVCUAL OTR Pacts Seca Ne esate eo Aiclseciew aed ole ae alos ia oeiele clailalartn nainacaulaclenent 646. 
I. InrropvuctTory. 
Tae Red Sandstone Series, ranging along the coast eastward from 
Peel to Will’s Strand, is faulted into the Ordovician massif of the 
Isle of Man, and so covered with Drift that the only clear sections 
are to be found along the line of cliff, and in the quarries at 
Ballaquane. There is, therefore, little reason for surprise that 
it should have been assigned to various geological horizons. It 
has been referred to the Old Red Sandstone by Cumming, to the 
Calciferous Sandstones by Mr. Horne, and to the Permian by 
myself (in a paper read before the Manchester Geological Society 
in 1894), and by Mr. Lamplugh in 1896 to the Basement Car- 
boniferous. It is so described by him in his Appendix to the 
British Association Handbook for 1896 (Liverpool), and is so 
represented in the Geological-Survey map of the island, and in 
the 1-inch Geological Map of England and Wales, both published 
in that year. Since 1894, in continuation of my work in mapping 
the island on the 6-inch seale, I have collected further evidence 
as to its geological age, and have refreshed my memory by a visit: 
to the most important localities in the Lake District where the 
Permians can be studied. The results of this enquiry are embodied 
in the following paper. : 
II. Toe Lower Rep Sanpstones anv. BRocKRAMS OF 
BALLAQuanNE AND CreG Matin. 
The Red Sandstones exposed in the cliffs at Creg Malin, and in 
the quarry at Ballaquane, dip at an angle varying from 37° to 46°, 
away from the Ordovician massif of the island, the exposures in 
