Information om | Engelska ordet LACCOLITH

Exempel på hur man kan använda LACCOLITH i en mening

• Created about 26 million years ago, Mount Coolum is a laccolith, formed when a dome-shaped bulge of magma cooled below the Earth's surface, roughly circular in plan with tall cliffs on the eastern and southern side.
• Katahdin is part of a laccolith that formed in the Acadian orogeny when an island arc collided with eastern North America approximately 400 million years ago.
• The mountain is built of serpentinite, limestone and magmatic rocks, which are injected in the shape of cone (laccolith).
• Lopoliths are concordant intrusions with a saucer shape, somewhat resembling an inverted laccolith, but they can be much larger and form by different processes.
• Geologically, the two Dirrington Laws comprise Carboniferous volcanic felsite (riebeckite), and may be the remains of a laccolith, a type of volcanic intrusion into the surrounding sedimentary rocks of the Old Red Sandstone.
• The eroded residue of the volcanic core forms the hill (or the laccolith) that is the George Maunder Lookout (and as well as the rest of Prospect Hill just the west of the Reserve), which was battered down over millions of years to a small jut in the generally flat lands of western Sydney.

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