The Quarterly journal of the Geological Society of London . me, where Mr. Tutcher is eoncei-ned; fauna!repetition on the lines of Echioceras of the Kaasayan may bemore likely. It is evident that a prolonged stratigraphical andpalaeontological investigation is required to solve the problem. The following table gives the evidence of faunal distj-ibutionand sequence in the Mercian. Table VII.—Meeciax : Scotland asd Strata. Heraerse. Raas AT. YOEKSKIRE. I Cheltenham: Bristol Dj Dorset 7. denotattis .. I XCi!elteiiham. 6. stellare XCheltenliain. Radstoek.
The Quarterly journal of the Geological Society of London . me, where Mr. Tutcher is eoncei-ned; fauna!repetition on the lines of Echioceras of the Kaasayan may bemore likely. It is evident that a prolonged stratigraphical andpalaeontological investigation is required to solve the problem. The following table gives the evidence of faunal distj-ibutionand sequence in the Mercian. Table VII.—Meeciax : Scotland asd Strata. Heraerse. Raas AT. YOEKSKIRE. I Cheltenham: Bristol Dj Dorset 7. denotattis .. I XCi!elteiiham. 6. stellare XCheltenliain. Radstoek. 88 5. planicosta .. 9 Radstock. 85-87 4. sagittarmm 10 X Pershore. 3. ohtusum 10 X Bredou. Radstock. 83,84 2. brooJci E. 7«-«9, 1. turneri 1 Geol. Wl R. litby op. Jam cif. p. 67. X Bredon. - Asi X Barrow 76, 77Gurney. n previous Tables. See Appendix I, p. part 4] jFEASSic cheoj^ologt : lias. 273 The accompanjdng diagram (fig. B, p. 272) sliows the variousearth-movements and denudations which took place duringRaasayan and Deiran times, jDroducing many non-sequences. Itis constructed on the same principle as the previous diagram(fig. A, p. 265). The datum-line is 1 Wessexian {Phricocloceras), proved in allareas except the Scottish one. Again the continuous movement ofthe Mendip axis is very noticeable ; for, although there are severalRaasayan faunas present in North Somerset, yet they are derivedalmost entireh, shown in the table by bracketing them with7 E-aasayan. During Deiran times the movements were of several datesnot always isochronous in the difcerent areas—hence the frag-mentary nature of the deposits and their lack of corre-spondence. One movement produced obliteration of the earlyDeiran deposits in Gloucestershire and the TMidlands, another theobliteration of the latest deposits. Yorkshire would seem not tohave suffered from
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectgeology, bookyear1845
