. The geology of the Oamaru district, North Otago (Eastern Otago division). purely local vent having prevented the spread of thecoralline growth to this site. According to the field evidence there is a well-markedstratigraphical unconformity at this place, but, as suggested above, it may be due tosome local volcanic happening. The conglomerate lying between the greensands and the Deborah (Kakanui) limestoneis a fairly constant member, being strongly developed at Deborah (Fig. 20), near theArdgowan Creamery at the junction of Grants and Oamaru creeks, at HutchinsonsQuarry, along Target Gully, a
. The geology of the Oamaru district, North Otago (Eastern Otago division). purely local vent having prevented the spread of thecoralline growth to this site. According to the field evidence there is a well-markedstratigraphical unconformity at this place, but, as suggested above, it may be due tosome local volcanic happening. The conglomerate lying between the greensands and the Deborah (Kakanui) limestoneis a fairly constant member, being strongly developed at Deborah (Fig. 20), near theArdgowan Creamery at the junction of Grants and Oamaru creeks, at HutchinsonsQuarry, along Target Gully, and at Devils Bridge. At the Devils Bridge the materialcomposing the conglomerate is a siliceous cement stone ; elsewhere it is basaltic. AtDeborah, Parsons Creek near Ardgowan Creamery, and Hutchinsons Quarry theconglomerate is glauconitic, and contains marine fossils, among which a thick oyster{Ostrea wuellerstorf, Zittel) and the large brachiopod Terebratula boehmi Thomson arenearly always present. The conglomerate, where basaltic, is of marine origin ; and Plate Jfimes Park, /ihoto ] A. ESCAHIMKNT OK OaMAKL StONK HfNNING SeAWARI) IFiOM TOTAUA.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectgeology, bookyear1918
