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| Keywords: The Quarterly journal of the Geological Society of London (12711996504).jpg 438 <br> PROCEEDINGS OF THE GEOLOGICAL SOCIETY Apr 4 <br> titles of iron ore in the Harz It is often so saturated with iron <br> that the calcareous portions are just sufficient to serve as a flux for <br> the smelting of the ore This is well seen at the Blaue Binge Mines <br> in the Biicherberg north of Elbingerode of which we annex a dia- <br> gram to exhibit the contortions of the strata fig 6 <br> There the iron rock plunging under <br> much schist and interlaminated volcanic <br> ash or schaalstein is distinctly overlaid <br> towards Elbingerode by coarse gritty grey- <br> wacke and the latter by dark schists ; the <br> whole of which are seen to be surmounted <br> by a dark limestone of totally different cha- <br> racters from that beneath Though much <br> contorted fractured and perforated by <br> dykes of black porphyry and bosses of a <br> light porphyry with pinite this upper lime- <br> stone which is highly crystalline passes at <br> one place into black and in another into <br> variegated coralline marble and occupies <br> the cliff's of the gorge of the river Bode <br> near Rubiland and its well-known caverns <br> Though fossils are rare in it Terebratula <br> cuboides and other forms elsewhere charac- <br> teristic of the Upper Devonian have been de- <br> tected by M Adolf Roemer ; ” fossils quite <br> distinct from those of the inferior or Strin- <br> gocephalus limestone In passing from the <br> valley of the Bode over the plateau by Hiit- <br> tenrode towards Blankenburg the upper <br> limestone is seen to be separated from the <br> ironstone by bands of schists grauwacke <br> and schaalstein <br> The section fig 6 explanatory of this <br> succession is merely off'ered as a very rude <br> approximation ; for whilst we believe that <br> it is correct in presenting a general view of <br> the relation of the two limestones and their <br> separation we are aware that numberless <br> features of the strata which are not visible <br> at the surface and many points of eruptive <br> rock have been omitted <br> Our chief objects however in calling at- <br> tention to these two limestones of Elbinge- <br> rode and the Bode-Thal are to show ” <br> 1st That even the lowest of them is entirely distinct from the <br> limestones of the adjacent tract on the east watered by the Selke <br> and which we have shown to be Upper Silurian <br> 2ndly That in following these calcareous rocks westward along <br> the southern slopes of the Brocken to the tracts between Goslar and 35615026 110213 51125 Page 438 Text v 11 http //www biodiversitylibrary org/page/35615026 1855 Geological Society of London NameFound Terebratula cuboides NameConfirmed Terebratula cuboides Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 11 1855 Geology Periodicals Smithsonian Libraries bhl page 35615026 dc identifier http //biodiversitylibrary org/page/35615026 smithsonian libraries Information field Flickr posted date ISOdate 2014-02-23 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/12711996504 2015-08-26 20 58 21 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1855 Photos uploaded from Flickr by Fæ using a script | ||||
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