Editing Northumbrian rocks and landscape: a field guide

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'''flute cast (flute mark) '''See '''''sole structure.'''''
 
'''flute cast (flute mark) '''See '''''sole structure.'''''
  
'''fold '''A bend in bedded rocks or any planar rock mass. An '''anticline '''is arched upwards with older rocks in the core. A '''pericline '''is an anticline in the form of an elongated dome. A '''syncline '''is bent downwards with younger rocks in the core. A '''monocline '''is a step-shaped fold, with one steep limb between two hinges. An '''isoclinal fold '''has subparallel fold limbs. The dip of the fold axis is the '''plunge '''of the fold.
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'''fold '''A bend in bedded rocks or any planar rock mass. An '''''anticline '''''is arched upwards with older rocks in the core. A '''pericline '''is an anticline in the form of an elongated dome. A '''syncline '''is bent downwards with younger rocks in the core. A '''monocline '''is a step-shaped fold, with one steep limb between two hinges. An '''isoclinal fold '''has subparallel fold limbs. The dip of the fold axis is the '''plunge '''of the fold.
  
 
'''foraminifera '''Microscopic single-celled organism with a chambered, usually calcium carbonate, test.
 
'''foraminifera '''Microscopic single-celled organism with a chambered, usually calcium carbonate, test.
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'''graben '''A linear tract of country, lowered between two bounding faults. A '''half-graben '''is fault-bounded on one side only.
 
'''graben '''A linear tract of country, lowered between two bounding faults. A '''half-graben '''is fault-bounded on one side only.
  
'''graptolite '''Extinct group of marine, '''''pelagic, '''''colonial organisms with an organic skeleton. Individuals a few mm long, colonies 10s of mm long. Usually preserved as a carbonaceous film.
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'''graptolite '''Extinct group of marine, '''''pelagic, '''''colonial organisms with an organic skeleton. Individuals a few mm long, colonies t o's mm long. Usually preserved as a carbonaceous film.
  
 
'''granite '''A coarse-grained acid igneous rock containing '''''quartz, '''''alkali '''''feldspar '''''and '''''mica.'''''
 
'''granite '''A coarse-grained acid igneous rock containing '''''quartz, '''''alkali '''''feldspar '''''and '''''mica.'''''

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