. Conodonts of the Lower Border group and equivalent strata (lower carboniferous) in Northern Cumbria and the Scottish Borders, Conodonts; Paleontology; Paleontology; Conodonts; Paleontology. quarries. There is considerable variation in the sediment characteristics and in the lithostratigraphic terminology applied to these strata in different areas of the Northum- berland trough. Throughout this work the following strati- graphic schemes are followed: Fowler (1936, 1966) for sections located in the Rothbury and North Tyne areas; Leeder (1974b) for the Newcastleton-Langholm area; Day (197
. Conodonts of the Lower Border group and equivalent strata (lower carboniferous) in Northern Cumbria and the Scottish Borders, Conodonts; Paleontology; Paleontology; Conodonts; Paleontology. quarries. There is considerable variation in the sediment characteristics and in the lithostratigraphic terminology applied to these strata in different areas of the Northum- berland trough. Throughout this work the following strati- graphic schemes are followed: Fowler (1936, 1966) for sections located in the Rothbury and North Tyne areas; Leeder (1974b) for the Newcastleton-Langholm area; Day (1970) for the Bewcastle area; Craig (1956) for the Kirk- bean ouUier; Deegan (1973) and Ord, Clemmey, and Leeder (1988) for the Rerrick outlier (see Text-Fig. 2 for locations). Where appropriate, lithostratigraphic terms are modified according to Holland et al. (1978), although the term "band" is replaced by "; Biostratigraphic terminology also follows Holland et al. (1978). Locality details are included as Appendix I. Stratigraphic relation- ships between Lower Border Group sections and equiva- lent strata within the Northumberland trough are shown in Text-Fig. 3. The Cementstone Group in the Rothbury area comprises a generally thinly-bedded sequence of alternating sandstones, shales, and lime mudstones (Fowler, 1936). The lime mudstones are commonly sandy or dolomitic (Fowler, 1936), and the limestone members towards the top of the group are dominated by calcareous algae, chiefly in the form of oncoids. Deposition of these sediments took place in a shallow, restricted intertidal setting or a coastal plain environment with periodic marine influence (Belt, Freshney, and Read, 1967). The algal members were deposited in a shallow, restricted shelf/ lagoon TEXT-FIG. 1. Location and palaeogeographic setting of the Northumberland trough. In the "North Tyne basin" (Fowler, 1966), the Cementstone Group is probably not more than 180 m thi
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