Editing Upper Carboniferous of the Halifax area - an excursion
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[[File:YGS_YORKROCK_FIG_09_03.jpg|thumbnail|Figure 9.3 Small-scale trough cross-stratification with carbonaceous plant material concentrated on the foresets and base of troughs, Clockface Quarry. Photo: B. Turner]] | [[File:YGS_YORKROCK_FIG_09_03.jpg|thumbnail|Figure 9.3 Small-scale trough cross-stratification with carbonaceous plant material concentrated on the foresets and base of troughs, Clockface Quarry. Photo: B. Turner]] | ||
− | + | == 9 The Upper Carboniferous of the Halifax area == | |
+ | |||
+ | By Brian Turner Durham University | ||
== Purpose == | == Purpose == | ||
− | The object of this excursion is to examine the sedimentary | + | The object of this excursion is to examine the sedimentary facies and depositional environments of the upper part of the Namurian Millstone Grit and the lower part of the overlying Westphalian A Coal Measures. |
== Logistics == | == Logistics == | ||
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{{YGSLogistics}} | {{YGSLogistics}} | ||
− | The excursion can be completed in one short day as all the localities occur within 10 | + | The excursion can be completed in one short day as all the localities occur within 10 km to the south and southwest of Halifax ([[:File:YGS_YORKROCK_FIG_09_01.jpg|Figure 9.1]]) and are easily accessible by road. Very little off-road walking is required and the distances involved at individual outcrops are less than r km, mostly over footpaths and rough tracks. Care must be excercised when visiting outcrops in quarries and road cuttings, and hard hats are recommended for safety. Private transport is an advantage but not essential, and parking facilities are available at all localities. The excursion is not suitable for large parties. |
Prior permission should be sought for access to Clockface Quarry from Marshalls, Brier Lodge, Southowram, Halifax. | Prior permission should be sought for access to Clockface Quarry from Marshalls, Brier Lodge, Southowram, Halifax. | ||
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== Maps == | == Maps == | ||
− | O.S. 1:50 | + | O.S. 1:50 000 Sheets 110 Sheffield & Huddersfield and 104 Leeds, Bradford & Harrogate; B.G.S. 1:50 000 Sheet 77 Huddersfield. |
== Geological background == | == Geological background == |