. Geology of the provinces of Canterbury and Westland, New Zealand, a report comprising the results of official explorations. 6Betvy JB 7 — TV^ \ > ^V^. ions corr. Scale , uigiTig in. oseoriaee, anclMoaboTies Geological Sections Lyttelton and Christchurch Railway Tunnel. NS1 Between Wz and 5% chains from Lyttelton end.,. a » %Aw, fnadu/ho Canterbury and Westland. 355 The Chbistchukch and Lyttelton Railway Tunnel. In the Historical Notes on pages 62 and 156,1 hare alluded to thegeological survey undertaken by me during the progress of theinteresting and instructive work of passing throug
. Geology of the provinces of Canterbury and Westland, New Zealand, a report comprising the results of official explorations. 6Betvy JB 7 — TV^ \ > ^V^. ions corr. Scale , uigiTig in. oseoriaee, anclMoaboTies Geological Sections Lyttelton and Christchurch Railway Tunnel. NS1 Between Wz and 5% chains from Lyttelton end.,. a » %Aw, fnadu/ho Canterbury and Westland. 355 The Chbistchukch and Lyttelton Railway Tunnel. In the Historical Notes on pages 62 and 156,1 hare alluded to thegeological survey undertaken by me during the progress of theinteresting and instructive work of passing through the caldera wallof a large extinct volcano. I prepared at the time a section at thescale of 20 feet to 1 inch, and have reduced, for this report, some ofIts most interesting portions to half that size.— Vide colouredPlate III. The direction of the tunnel is K 14° W. The first trial shaftwas commenced in January, 1860, and the permanent works undercontract with Messrs Holmes and Co., began in July, 1861. Thetunnel was laid out, and its execution solely superintended by Dobson, , Provincial Engineer. It was brought to asuccessful termination on May 25, 1866, when both adits met near thecentre. The opening for railway traffic took place on December 9,1867. The total length of the tunnel is 8598 feet
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectgeology, bookyear1879
