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| Keywords: The Quarterly journal of the Geological Society of London (14073264742).jpg OF THE WEKA-PASS STONE OF NEW ZEALAND <br> 271 <br> which he sa3's must convince any one that the conformity to <br> the Mount-Brown beds in the south-west branch of the Motunan <br> River is only apparent I confess that I cannot follow this <br> reasoning It seems to me that these sections if they are correctlj <br> interpreted show an unconformity between the Amuri limestone <br> and the lower beds of the Waipara Sj'stem and a regular sequence <br> from the Amuri limestone into the Mount-Brown beds although <br> the WeJca-joass Stone is ahseyit But probably Mr M'Kay has here <br> mistaken the Weka-pass Stone for the Amuri limestone a very easy <br> mistake to make ; and if this is the case his sections will agree with <br> those in other localities <br> Stonyhurst ” This place is on the sea-coast a little south of the <br> mouth of the Hurinui Here the Amuri limestone is overlain by a <br> grey sandstone probably the representative of the Weka-pass Stone <br> Between the two rocks is a bed of conglomerate formed by sub- <br> angular pebbles of slate At first sight all three appear to belong <br> to one system ; but a close inspection shows that the surface of the <br> limestone is fissured and that the sandstone penetrates through the <br> conglomerate into the fissures of the limestone This however may <br> be due to chemical erosion <br> Biver Coniuay ” Some ten or twelve miles from the mouth we <br> again get an excellent section in the bed of the river fig 4 Here <br> S S E <br> Fig 4 ” On the South Bank of the Coniuay Biver <br> Distance mile <br> N N W <br> For explanation see fig 1 <br> the Amuri limestone is seen to be somewhat folded and overlain <br> quite unconformably by a bed of blue marl passing upwards into <br> pale yellow sandstone As will be seen later the fossils found <br> in this marl make its age rather doubtful I believe it to be <br> the same as the Grey Marl of the Weka Pass but it may be younger <br> Dr von Haast says of this section The lowest limestone layers have <br> been deposited without disturbance but seem afterwards on the <br> western side to have been folded up in a most remarkable manner <br> after which newer beds of the same rock have again been deposited <br> reposing unconformably upon the lower beds This fold does not <br> occur on the opposite eastern side but the unconformity between <br> the upper and lower beds exists there also f The fossils how- <br> ever show that the upper rocks are mUch younger than the Amuri <br> 'Geological Reports ' 1873-74 p 48 <br> t ' Geological Eeports ' 1870-71 p 40 37047127 114009 51125 Page 271 Text 41 http //www biodiversitylibrary org/page/37047127 1885 Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 41 1885 Geology Periodicals Smithsonian Libraries bhl page 37047127 dc identifier http //biodiversitylibrary org/page/37047127 smithsonian libraries Information field Flickr posted date ISOdate 2014-04-30 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/14073264742 2015-08-26 04 53 33 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1885 Photos uploaded from Flickr by Fæ using a script | ||||
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