. Bulletin of the British Museum (Natural History), Geology. 4 LOWER PALAEOZOIC STRATIGRAPHY I. INTRODUCTION & ACKNOWLEDGMENTS The present paper is the first of a series describing the Lower Palaeozoic trilobites of that area of Turkey which lies between Beysehir and Seydisehir (see Fig. i), some ioo kilometres south-west of Konya. An earlier paper (Dean & Monod, 1970) intro- duced the reader to the succession of Cambrian and Ordovician strata there and gave a series of sketch-maps showing the position of fossil localities and their stratigraphical position, if Fig. 1. Outline
. Bulletin of the British Museum (Natural History), Geology. 4 LOWER PALAEOZOIC STRATIGRAPHY I. INTRODUCTION & ACKNOWLEDGMENTS The present paper is the first of a series describing the Lower Palaeozoic trilobites of that area of Turkey which lies between Beysehir and Seydisehir (see Fig. i), some ioo kilometres south-west of Konya. An earlier paper (Dean & Monod, 1970) intro- duced the reader to the succession of Cambrian and Ordovician strata there and gave a series of sketch-maps showing the position of fossil localities and their stratigraphical position, if Fig. 1. Outline map of Turkey showing the location of the Beysehir-Seydisehir district in relation to the Taurus Mountains (vertical shading) and other major structural units. The Seydisehir Formation, at least part of which is Lower Ordovician in age, forms by far the largest Lower Palaeozoic outcrops of the region (see Fig. 2), and comprises the Seydisehir Shales, silty shales more than 1000 metres thick with occasional resistant bands of brown-weathering, sandy limestone, followed by 20 metres of coarser beds, the Upper Greywackes. The rocks, often tectonically deformed, are largely barren, but at some localities, all of which represent levels in the upper half of the Seydisehir Formation, the harder bands have yielded fossils. The latter include graptolites which indicate an Arenig age, possibly both the Extensus and Hirundo. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
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