. The geology of the Oamaru district, North Otago (Eastern Otago division). Fio. 26. —Section on East Side of Landon Cbkkk. Ototaran . .. .. a. Oamaru stone, .JO ft. showing. \b. Brown glauconitic sandstone, oft. thick; the same asHutchinsonian .. t)ed h in Fig. 2.); fossiliferous. I c. Hard nodular greensands. The higher portion of the Oamaru stone is glauconitic and tufaceous, and itsupper surface along the contact with bed h is corroded and uneven. The actualcontact is occupied by a liinonitic rubbly layer, varying from 3 in. to 9 in. thick. Thislayer contains scattered water-worn quartz pe
. The geology of the Oamaru district, North Otago (Eastern Otago division). Fio. 26. —Section on East Side of Landon Cbkkk. Ototaran . .. .. a. Oamaru stone, .JO ft. showing. \b. Brown glauconitic sandstone, oft. thick; the same asHutchinsonian .. t)ed h in Fig. 2.); fossiliferous. I c. Hard nodular greensands. The higher portion of the Oamaru stone is glauconitic and tufaceous, and itsupper surface along the contact with bed h is corroded and uneven. The actualcontact is occupied by a liinonitic rubbly layer, varying from 3 in. to 9 in. thick. Thislayer contains scattered water-worn quartz pebbles. It is fossiliferous, most of thefossils being polyzoans, echinoderm spines, and brachiopods. The latter included JEtheiayauUeri (Morris) and Pachymagas sp. Still higher up the gorge, at the north end of the wooden tlume across LandonCreek, the calcareous glauconitic sandstone expands to a visible thickness of 24 ft. 64 X OamaTic Borovugh Water?-rax,e312. Fig. 27 Section across Landon Ceeek Gobge at Xoeth End of Flume carrying OamaruBorough Water-supply. Ototaran Hutchinsoniaii Pleistocene (I. Oamaru stone, 40 ft. showing. b. Glauconitic sandstone, 24 ft. .showing;. r. High-level gravels. From the lower portion of the glauconitic sandstone were collected the brachiopods Liothyrella landonensis Thomson, Pachymaffas jmrh (Hutt.), and Hemithyris sp., andthe molluscs— —Epitonium zelebori (Dkr.). Pecten hMoni (Park). -^Pecten beethami Hutt. Pecten semiplicatus Hutt. Pecten burnetti Zitt. -^Crassatellites obesus (A. Ad.). Pecten hutchinsoni Hutt. Chiotie meridionalis (?) (Sow.). Echinoderm-remains, corals, and bryozoans are present in great abundance in thishorizon. Section at Brockmaiis this place the Waiareka tuffs are followed by tufaceous calcareous strata, whichare overlain by the Oamaru stone w4iich crowns the hill. The succession of rocks is,—(a.) Waiareka tuffs, of which a of over 200 ft. are exposed ; near t
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectgeology, bookyear1918
