Quartz dolerite or quartz diabase is an intrusive rock similar to dolerite (also called diabase), but with an excess of quartz. Dolerite is similar in...
1 KB (206 words) - 02:45, 4 January 2024
The Whin Sill or Great Whin Sill is a tabular layer of the igneous rock dolerite in County Durham, Northumberland and Cumbria in the northeast of England...
6 KB (786 words) - 09:46, 15 March 2024
varieties, including: basalt in Victoria, Australia, and in New Zealand dolerites in Tasmania, Australia; and in Britain (including Stonehenge) feldspathic...
18 KB (2,061 words) - 07:34, 17 August 2024
include diabase (also known as dolerite) and porphyry. Common examples of subvolcanic rocks are diabase, quartz dolerite, microgranite, and diorite. Cone...
2 KB (123 words) - 13:55, 27 July 2023
The Prospect dolerite intrusion, or Prospect intrusion, is a Jurassic picrite or dolerite laccolith that is situated in Sydney, New South Wales, Australia...
20 KB (2,444 words) - 14:01, 19 May 2024
cooling to form very hard dolerite, a coarser-grained equivalent of basalt. Subsequent glacial erosion was resisted more by the dolerite, which protected the...
3 KB (283 words) - 19:53, 3 April 2024
spectacular for its unique geology, the Giant's Playground, a vast pile of large dolerite rocks. The Quiver Tree Forest holds tremendous ecological value within...
3 KB (340 words) - 19:00, 13 June 2024
building was designed by Ferdinand Meldahl and built using hewn Icelandic dolerite from 1880 to 1881. The reliefs on the tympanums of the four outermost windows...
4 KB (272 words) - 04:39, 2 June 2024
period about 11,700 years ago. Much of the island is composed of Jurassic dolerite intrusions (the upwelling of magma) through other rock types, sometimes...
184 KB (15,529 words) - 14:54, 29 August 2024