Editing Carboniferous miospore biostratigraphy of the North Sea

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=== 3.7 Offshore to onshore comparisons ===
 
=== 3.7 Offshore to onshore comparisons ===
  
This study is based upon a wealth of palynostratigraphical data from offshore Carboniferous sections. Synthesis of these indicates similarities and differences between the palynology of the offshore and the onshore basins and shows areas in which the biostratigraphic subdivisions of the onshore Carboniferous strata may be improved. A few examples are given here. Stratigraphically restricted late Viséan palynomorph assemblages from the Forth Approaches Basin contain miospore taxa described from the Carboniferous of the present-day Arctic (Ravn 1991). These have been only rarely described from coeval strata on shore in the Midland Valley of Scotland (Turner & McLean 1999), but have correlation potential and may provide information on vegetation migration pathways and palaeoclimate. Secondly, many distinctive but undescribed miospore taxa are known from the offshore Carboniferous. Similarly, forms described from the Carboniferous of the United States that are rare in the onshore UK, may be relatively common off shore. The stratigraphical potential of these for European palynostratigraphic correlation is gradually becoming appreciated.
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This study is based upon a wealth of palynostratigraphical data from offshore Carboniferous sections. Synthesis of these indicates similarities and differences between the palynology of the offshore and the onshore basins and shows areas in which the biostratigraphic subdivisions of the onshore Carboniferous strata may be improved. A few examples are given here. Strati-graphically restricted late Viséan palynomorph assemblages from the Forth Approaches Basin contain miospore taxa described from the Carboniferous of the present-day Arctic (Ravn 1991). These have been only rarely described from coeval strata on shore in the Midland Valley of Scotland (Turner & McLean 1999), but have correlation potential and may provide information on vegetation migration pathways and palaeoclimate. Secondly, many distinctive but undescribed miospore taxa are known from the offshore Carboniferous. Similarly, forms described from the Carboniferous of the United States that are rare in the onshore UK, may be relatively common off shore. The stratigraphical potential of these for European palynostratigraphic correlation is gradually becoming appreciated.
  
 
== 4. Conclusions ==
 
== 4. Conclusions ==

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