. La geologia del distretto di Oamaru, North Otago orientale (divisione di Otago). dovuti dall'Hutchinsonian greensands affollato con Pachymagas fo/rki (Hutton).La sezione esposta in basse scogliere a circa 30 metri al di sopra della farm homestead isshown in Fig. 14. 31£ o o i c Q invettive Creek Fio. 14.-La sezione su Kast Banca di sovvenzioni Creek, 400 sopra Vabds .Ardoowan Road .Itnction. Soft friabile tutfs verdolino, glauconitic, calcarei, c. Giallo-marrone pietra arenaria calcarea, 0 ft. di spessore e fossiliferi, 8 ft. mostra. d. Letto di conglomerato basaltica, 2 ft. a 4 ft. spessa. h. Letto di ba.conglomerato saltic variare

• Collaboratore: The Reading Room / Alamy Foto Stock
• ID dell’immagine: 2AFWW33
• Dimensioni dei file: 7,1 MB (164,2 KB Download compresso)
• Liberatorie: Modello - no | Proprietà - no
• Dimensioni: 1683 x 1484 px | 28,5 x 25,1 cm | 11,2 x 9,9 inches | 150dpi

Altre informazioni

Questa foto è un'immagine di pubblico dominio, il che significa che il copyright è scaduto o che il titolare del copyright ha rinunciato a tale diritto. Alamy addebita un costo per l'accesso alla copia ad alta risoluzione dell'immagine.

Questa immagine potrebbe avere delle imperfezioni perché è storica o di reportage.

. The geology of the Oamaru district, North Otago (Eastern Otago division). owed by the Hutchinsonian greensands crowded with Pachymagas fo/rki (Hutton).The section exposed in the low cliffs about 30 yards above the farm homestead isshown in Fig. 14. 31£ o o I c Q rants Creek Fio. 14.—Section on Kast Bank of Grants Creek, 400 Vabds above .Ardoowan Road .Itnction. Soft friable greenish tutfs, glauconitic, calcareous, c. Yellowish-brown calcareous sandstone, 0 ft. thick, and fossiliferous, 8 ft. showing. d. Bed of basaltic conglomerate, 2 ft. to 4 ft. thick. h. Bed of ba.saltic conglomerate varying from 3 in. e. Oamaru stone, 10 ft. showing, to {) in. thick. /. Surface soil and gravels. The tuffs contain numerous Polyzoa. echinoderm remains, and broken shells, all toofragmentary for satisfactory identification. The conglomerate bands probably owe their origin to the contemporaneous marineerosion of portions of the tuff platform that stood a little above sea-level or werejust awash, and hence subject to the wear-and-tear of the tides and coastal sea-currents.. 46 Section on North Side of North-west Branch oj Landon Creek.In the upper basin of this stream there is a great development of the Waiarekantuffs. The tuffs are followed by the lower and ujjper bands of Oamaru stone, which, as at Kakanui, are separated by a considerable thickness of dark greenish-browntachylitic breccia, in which there occur many minerals, including dark-coloured augite, hornblende, garnet, and feldspar. The strike of these rocks is north-east-south-we, st, and their dip south-east at angles varying from 40° to 45°. Down the stream thedip flattens, and when the upper band of Oamaru stone is reached the angle of dipvaries from 15° to 20°. The lower limestone band is glauconitic, and contains a layer of calcareous tuff. Thethickness of the tachylitic breccia and associated beds cannot be ascertained, on accountof slope deposits covering the line of junction between it and the enclosing limeston

Parole chiave associate all'immagine

• bookcentury1900
• bookdecade1910
• booksubjectgeology
• bookyear1918