Editing Northumbrian rocks and landscape: a field guide

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'''moraine '''An unsorted deposit of rock debris associated with the actions of a glacier.
 
'''moraine '''An unsorted deposit of rock debris associated with the actions of a glacier.
  
'''nautiloid '''Cephalopod '''''mollusc '''''with a curved or straight, tapering, chambered shell; '''''suture '''''simple, siphuncular tube central in chambers.
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'''nautiloid '''Cephalopod ''mollusc ''with a curved or straight, tapering, chambered shell; '''''suture '''''simple, siphuncular tube central in chambers.
  
'''olivine '''A group of olive green to brown or black rock-forming Mg, Fe silicate minerals, characteristic of silica-poor '''igneous '''rocks.
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'''olivine '''A group of olive green to brown or black rock-forming Mg, Fe silicate minerals, characteristic ofsilica-poor '''igneous '''rocks.
  
'''oncolite '''Spherical or sub-spherical particle up to 50 mm diameter formed by the action of '''''algae '''''in trapping sediment on the surface of a mobile grain.
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'''oncolite '''Spherical or sub-spherical particle up to 50 mm diameter formed by the action of '''''algae '''''in trapping sediment on the surface ofa mobile grain.
  
'''oolite '''Rock formed largely of '''''ooliths. '''''Characteristic of high-energy, shallow-water environments.
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'''oolite '''Rock formed largely of '''''ooliths. '''''Characteristic ofhigh-energy, shallow-water environments.
  
'''oolith '''Spherical or sub-spherical particle less than 2 mm diameter formed by the concentric deposition of rings of (usually) calcium carbonate around a mobile grain.
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'''oolith '''Spherical or sub-spherical particle less than 2 mm diameter formed by the concentric deposition ofrings of (usually) calcium carbonate around a mobile grain.
  
 
'''orogeny '''Process of mountain building by the lateral compression of thick rock sequences. The '''Caledonian Orogenic Cycle '''refers to a series of orogenic events in the Lower Palaeozoic culminating in the late Silurian/early Devonian. The '''Variscan Orogeny, '''whose main effects are seen in southwest England and Central Europe, spanned the late Devonian to late Carboniferous.
 
'''orogeny '''Process of mountain building by the lateral compression of thick rock sequences. The '''Caledonian Orogenic Cycle '''refers to a series of orogenic events in the Lower Palaeozoic culminating in the late Silurian/early Devonian. The '''Variscan Orogeny, '''whose main effects are seen in southwest England and Central Europe, spanned the late Devonian to late Carboniferous.
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'''ostracode '''Small to microscopic, marine to fresh-water crustacean with calcitic bivalved shell.
 
'''ostracode '''Small to microscopic, marine to fresh-water crustacean with calcitic bivalved shell.
  
'''outlier '''Area of younger rocks surrounded by older rocks.
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'''outlier '''Area ofyounger rocks surrounded by older rocks.
  
 
'''overflow channel, spillway '''Channel carved by the overflow from an ice-dammed lake. Usually unrelated to the present drainage pattern.  
 
'''overflow channel, spillway '''Channel carved by the overflow from an ice-dammed lake. Usually unrelated to the present drainage pattern.  

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