. The geology of the Oamaru district, North Otago (Eastern Otago division). uet Gully Shkll-hkd. (/. Soft glauconitic sandstone. 6. Band of hard glauconitic sandstone, 2 ft. to 4 ft. c. Pleistocene higli-iovol greywacke gravels, (50 ft. thick. From Quarry to the Town Belt the Hutchinsonian beds are overlainby a thick deposit of high-level greywacke gravel. At the Town Belt the hard bandof glauconitic sandstone, which has been described above as cropping out at ntervalson the gras,sy slop^, has been worn away ; and in the shallow gutter thus formedthere occurs what has bee
. The geology of the Oamaru district, North Otago (Eastern Otago division). uet Gully Shkll-hkd. (/. Soft glauconitic sandstone. 6. Band of hard glauconitic sandstone, 2 ft. to 4 ft. c. Pleistocene higli-iovol greywacke gravels, (50 ft. thick. From Quarry to the Town Belt the Hutchinsonian beds are overlainby a thick deposit of high-level greywacke gravel. At the Town Belt the hard bandof glauconitic sandstone, which has been described above as cropping out at ntervalson the gras,sy slop^, has been worn away ; and in the shallow gutter thus formedthere occurs what has been described as the Target Gully shell-bed of Awamoan age(Fig. 35). At the Town Belt the Target Gully shell-bed lies on a .soft glauconitic . 20 ft. below the shell-bed this sandstone becomes strongly glauconitic and 80 calcareous. As exposed in the road-cutting it is friable, jointed, and seamed withsoft powdery carbonate of lime. The section from Target Creek eastward along theTown Belt is shown in Fig. 35. Pipe-line Rooud, Target QuJly Shell Bed 178e,c. TcbTget Creek, 75 above. sea-leveZ Fig. 35.—Section at Taroet Gully Shell-bed. Well-bedded olive-green , obscured by slope glauconitic sandstone, fossiUferous. e. Target Gully shell-bed (Awanioan), li ft. exposed f. Surface clavs and gravels. (L Band of hard yellowish-brown glauconitic sandstone, 2 ft. to 4 ft. thick. The molluscs found in the glauconitic sandy bed below the shell-bed at TargetGrullv were,— Acleon proecursorius Sut. Alectrion sodalis (Hutt.). Ancilla papillata (Tate).^Anomia hultoni ^Arca novoB-zealandicB Smith. Area subvelata Sut.^Calliostoma pellucidum (Val.). Calyptrcea maccoyi ^Gcdyptrcea maculata (Q. & 6.)—Cantharidus tenebrosus A. Ad. Chione meridionalis (Sow.). Gorbula humerosa Hutt. Corbula pumila ^Crassatellites obesus (A. Ad.).-^Crepidula monoxi/la (). Crepidula gregaria Sow. Cxmullcea alta Sow. Cylichnella soror Sut. Dentalium tn
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectgeology, bookyear1918
