The Weardale Granite pluton is the largest and the only one that has been proved (sampled), after the Rookhope Borehole confirmed Martin Bott's hypothesis that a large negative gravity anomaly under Weardale represented a low-density igneous intrusion.
•
In the early 1960s, a borehole was drilled at Rookhope by Durham University, and proved the existence of the intrusion at a depth of 390 m.
North Carolina | North America | North Rhine-Westphalia | North Korea | North Yorkshire | University of North Carolina at Chapel Hill | North Island | North Sea | North Africa | North Dakota | North | Raleigh, North Carolina | Chapel Hill, North Carolina | University of North Carolina | Scarborough, North Yorkshire | North Pole | North Vietnam | North Shore | London and North Western Railway | North American Soccer League | Asheville, North Carolina | North Carolina State University | Greensboro, North Carolina | North American Free Trade Agreement | Durham, North Carolina | North London | Winston-Salem, North Carolina | North Wales | Wilmington, North Carolina | North Shore City |