Carbon peak is a laccolith formed during the mid-Tertiary period, and is part of the laccolith triangle as described by the Colorado Geological Survey.
22.
Carbon peak is a laccolith formed during the mid-Tertiary period, and is part of the laccolith triangle as described by the Colorado Geological Survey.
23.
High resolution dating and excellent 3-D exposure of the laccolith and its vertical feeding system allow detailed reconstruction of the Torres del Paine fossil magma chamber history.
24.
A laccolith is a large mass of igneous rock which is intruded through sedimentary rock beds without reaching the surface, but makes a rounded bulge in the sedimentary layers above.
25.
However, because of the collapse of the volcanic material combined with subsequent surface erosion, the Prospect Hill laccolith had a concave upper surface until modern times, when quarrying altered its shape.
26.
It consists of the eroded remains of a laccolith, presumably named for the sense of solitude that observers within the structure might have, due to the partial illusion of endless expanse in all directions.
27.
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.
28.
This has given rise to its description as " caldera-like " although it is not a true caldera, and explains why the Hill, although a laccolith ( which is normally dome-shaped ), is in fact dish-shaped.
29.
The topography of the domes is variable, as is the degree of exposure of the actual intrusions; in fact, the only exposure of the intrusion coring one of the domes is on a fault located along its north edge ( trap door laccolith ? ).
