by WPorre | May 26, 2016 | Boulder Beach
Boulder Beach Rounding and polishingSharp and angular rocks are rolled around and polished to form elegant rounded stones, which may be egg-shaped, discoid or simply rounded at the edges – depending on the internal structure of the rock in question. Over thousands of...
by WPorre | May 26, 2016 | Boulder Beach
Boulder Beach Lines and designs in stoneMany stones reveal patterns of lines and strange designs that reflect the original stratification in the rocks. Sometimes a boulder will consist of two different rock types. At other times, thin veins that of pure white quartz...
by WPorre | May 26, 2016 | Boulder Beach
Boulder Beach Wind polishingWind-blown sand grains can also polish the rocks. It is common on the larger boulders to find two or three angular edges on the side facing the prevailing wind. These faceted edges have been polished smooth and often have a somewhat greasy...
by WPorre | May 26, 2016 | Boulder Beach
Boulder Beach ErraticsAlong the Jæren coast we can find stones and boulders derived from local formations, as well as foreign rocks, or “erratics”, transported from other parts of Norway or northern Europe. Most erratics have been transported here frozen...
by WPorre | May 26, 2016 | Boulder Beach
Boulder Beach Wave polishingThis granite block has been shaped and polished into a sculpture by millions of waves that used sand to abrade the...
by WPorre | May 26, 2016 | Boulder Beach
Boulder Beach Lista MoraineThis map shows locations where we can see the great Lista Moraine. North of Revtangen, the terminal moraine forms a crescentic ridge on the sea floor outside Boknafjord. It contains sediments that the ice-sheet eroded from formations in...
Recent Comments