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Geological Contact

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Contact, Geological 

the contact surface of rocks that form contiguous sections of the earth’s crust. Geological contacts are classified as normal, or stratigraphic, when sedimentary or effusive rock is deposited on older rock; intrusive, if comparatively young intrusive rock has broken through older rock, causing various changes in it; and tectonic, when rocks of different content, origin, and age adjoin along the surface of a tectonic fault.
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The location of the key geological contact between the sedimentary rocks and the monzonite porphyry changes strike from north-west-southeast strike adjacent to the main Buccaneer Porphyry zone to more north-south strike in the area of north-west extensions which is likely due to fault offsets.
ABM Resources NL (ASX:ABU) Buccaneer Porphyry North-West Extension ... by ABN Newswire
Another chapter describes the work of Nery Delgado (Portuguese Geological Survey) in Spain in 1878, and his attempts to rationalise the mapping of trans-border geological contacts between Spain and southern Portugal.
Four Centuries of Geological Travel: The Search for Knowledge on ... by Morgan, Alan / Geoscience Canada
Lennie Property The Lennie Property is strategically located northeast of the Red Lake Gold Mines complex along the same geological contact that hosts the major gold mines in Red Lake.
Newcastle Resources Options Lennie Property by Business Wire
 
 
 
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