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Published online by Cambridge University Press: 01 May 2009
Considering now the details of the various districts, we notice that in South Öland the basal beds are shaly and conglomeratic; the higher part is calcareous, and by increase in the proportion of matrix passes into a creamy-white limestone which is wonderfully fossiliferous (0 1 and C). The highest beds are again glauconitic, soft, and shaly. Northward the proportion of calcareous material diminishes, and a band of shale with Shumardia, whose lithology and fossil content agree with that of the Ottenby Ceratopyge shales below the unconformity, is interstratified with the limestone. This bed is quite inconstant, but in Central Öland another shale band containing Euloma occurs low down in the limestone. Beyond Borgholm (05 and 06) all limestone disappears, and only glauconitic shale separates the alternating of Dictyonema shale and Obolus conglomerate from the Orthoceras limestone above. In Central Öland the glauconite shales and Ceratopygekalk attain their maximum thickness of nearly seven feet, but in the north are again reduced to little more than one foot.
page 296 note 2 “Ein Shumardiaschiefer bei Lanna,” in Nerike. Arkiv für Zoologi Kglsv. Yet. Ak. Stm., 1905.
page 297 note 1 “Några anmärkningar om vestra Europas Kambriska och Siluriska Korologi”: G.F.F.S., 1889, p. 299.
page 297 note 2 Elles, G. L.: “The Graptolites Fauna of the Skiddaw Slates” (Q.J.G.S., 1898, p. 463)Google Scholar; “Some Graptolite Zones in the Arenig Rocks of Wales,” 1901, Graptolites, parts 1 and 2 (Pal. Soc).
page 299 note 1 Angelin, N. P.: “Palæontologia Scandinavica,” 1852, 1854.Google Scholar
page 300 note 1 “Om en afdelniug inom Olands dictyonemaskiffer såsone motsvarighet till Ceratopygeskiffern in Norge”: S.G.U., ser. C, No. 109.
page 300 note 2 Belt: Geol. Mag., 1867, p. 538.
page 301 note 1 Croom: Q.J.G.S., 1902, p. 39.
page 301 note 2 Lapworth, “Geology of Birmingham District”; Proc. Geol. Assoc, 1898, p. 337.
page 301 note 3 Ramsay, “Geology of North Wales”: Geol. Surv. Memoir, vol. iii.
page 301 note 4 Fearnsides: Q.J.G.S., 1905.
page 301 note 5 Rep. Brit. Assoc, 1902, p. 614.
page 301 note 6 D. sociale, Salter: Appendix to Ramsay's “Geology of North Wales ” (Geol. Surv. Memoir), vol. iii, p. 331.
page 301 note 7 Marr: Geol. Mag., 1894, p. 122.
page 302 note 1 Fearnsides: Q.J.G.S., 1905.
page 302 note 2 Callaway: Q.J.G.S., 1877, p. 652.
page 302 note 3 Fearnsides: Rep. Brit. Assoc., 1902, p. 614.
page 302 note 4 Ramsay, “Geology of North Wales” (Geol. Surv. Memoirs), vol. iii.
page 302 note 5 Crossfield & Skeat: Q.J.G.S., vol. lii (1896), p. 523.
page 302 note 6 Hicks: Q.J.G.S., p. 39, vol. xxix.
page 302 note 7 Elles: Geol. Mag., 1904.
page 302 note 8 Fearnsides: Q.J.G.S., 1905.
page 302 note 9 Hicks: Q.J.G.S., vol. xxix, p. 39.