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Print/export Download as PDF; Printable version; In other projects ... Pages in category "Columnar basalts" The following 21 pages are in this category, out of 21 ...
List of places with columnar jointed volcanics Topics referred to by the same term This disambiguation page lists articles associated with the title Basalt columns .
Columnar jointing is a geological structure where sets of intersecting closely spaced fractures, referred to as joints, result in the formation of a regular array of polygonal prisms (basalt prisms), or columns. Columnar jointing occurs in many types of igneous rocks and forms as the rock cools and contracts.
Gerðuberg in Snæfellsnes Gerðuberg basalt columns. Gerðuberg (Icelandic pronunciation: [ˈcɛrðʏˌpɛrk]; also transcribed Gerduberg) is a cliff of dolerite, a coarse-grained basalt rock, located on western peninsula Snæfellsnes and on the western edge of the Hnappadalur [ˈn̥ahpaˌtaːlʏr̥] valley, 46 km in the north of the town of Borgarnes and 115 km to Reykjavík.
They are part of a rock formation that comprises a group of columnar basalts which resemble organ pipes. The Organ Pipes were formed about 150 million years ago as the result of the intrusion of liquid lava into a slate rock formation, which was exposed over time by erosion .
In accounting, a worksheet is, or was, a sheet of ruled paper with rows and columns on which an accountant could record information or perform calculations. These are often called columnar pads, and typically green-tinted.
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Exfoliation joints or sheet joints are surface-parallel fracture systems in rock, often leading to the erosion of concentric slabs. General characteristics [ edit ]