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| Keywords: The Quarterly journal of the Geological Society of London (12736294595).jpg 678 <br> R L JACK AND J HORNE ON GLACIAL DRIFT <br> about 5 miles above Szigeth the main road ascends to the level of <br> the upper terrace which sweeps south to the base of the hills At <br> this point the valley is only about a mile and a half broad and <br> seems to be filled entirely with alluvial deposits The same fact is <br> observable at Gross Bocsko where the valley narrows to not much <br> more than a quarter of a mile Again near Lonka several excellent <br> sections of these alluvial gravels are met with which likewise <br> stretch from the one hill-slope to the other At this point there are <br> also two well-marked terraces ; the gravel of the upper terrace <br> being upwards of 20 feet thick The same horizontal beddiug is <br> discernible while the deposit as a whole is pretty coarse many <br> of the stones measuring 2 feet across Here the Flysch-beds are <br> seen dipping up stream at an angle of 20° and within a short dis- <br> tance reversed at a high angle as shown in the following section <br> fig 2 <br> Fig 2 ” Section near Lonka <br> a Old alluvial terrace <br> b Kecent alluvium <br> Sandstones and shales Flysch- <br> beds thrown into a synclinal fold <br> Bather more than a mile beyond Lonka the river flows between <br> steep pine-clad hills with no alluvial or drift-deposits on either <br> bank Near this however three large erratics of quartz rock were <br> observed one of which measured upwards of 90 cubic feet and <br> another partly concealed upwards of 10 feet in length Higher <br> up the valley in a roadside-cutting the quartz rock is seen in place <br> and is rapidly succeeded by a fine-grained blue limestone the latter <br> probably belonging to the patch of Dyas or Permian rocks repre- <br> sented in Yon Hauer's map On the right bank of the Theiss just <br> about a mile and a half below the point where it receives the waters <br> of the Visso another drift-section is exposed It occurs on the road- <br> side and is about 100 feet above the level of the river The <br> deposit consists of stiff dark-blue clay stuck full of stones some of <br> which range up to 8 cubic feet The blocks as a rule are not <br> rounded ; and though a careful search was made no instances of <br> striae were observed The absence of such may be accounted for by <br> the fact that the stones consist mainly of soft brownish- grey <br> micaceous sandstones which would not readily retain glacial <br> markings This section is about 2050 feet above the sea-level by <br> aneroid measurement <br> It is worthy of note as exemplifying the relation between the 35818855 110705 51125 Page 678 Text 33 http //www biodiversitylibrary org/page/35818855 1877 Geological Society of London NameFound Dyas NameConfirmed Dyas NameBankID 4870430 Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 33 1877 Geology Periodicals Smithsonian Libraries bhl page 35818855 dc identifier http //biodiversitylibrary org/page/35818855 smithsonian libraries Information field Flickr posted date ISOdate 2014-02-24 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/12736294595 2015-08-26 19 54 45 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1877 Photos uploaded from Flickr by Fæ using a script | ||||
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