Jump to content

Search results

View (previous 20 | ) (20 | 50 | 100 | 250 | 500)
  • Thumbnail for Migmatite
    considered magma injection and its associated veined and brecciated rocks as fundamental to the process. The upward succession of gneiss, schist and phyllite...
    24 KB (2,887 words) - 13:42, 21 October 2024
  • Thumbnail for Nastapoka arc
    these rocks consist of about 60% Archean granitic plutons and granitic gneiss. The granitic rocks include typically foliated granodiorites, quartz diorites...
    11 KB (1,239 words) - 10:06, 24 September 2024
  • Thumbnail for Dharwar Craton
    the Dharwar Craton are mainly TTG (Tonalite-trondhjemite-granodiorite) gneisses, volcanic-sedimentary greenstone sequences and calc-alkaline granitoids...
    39 KB (3,535 words) - 01:37, 6 August 2024
  • Thumbnail for Buan County
    biotite gneiss is captured within a porphyritic granite body. Precambrian gneisses are distributed on a small scale in the following areas. Biotite gneiss (PPrbgn)...
    18 KB (1,531 words) - 19:56, 22 October 2024
  • Thumbnail for Granulite
    garnets, micas, or amphiboles may form along a linear pattern resembling gneiss or migmatite banding. Granulites form at crustal depths, typically during...
    12 KB (1,505 words) - 00:11, 17 June 2024
  • Thumbnail for Clastic dike
    layering in other rock types. Clastic dikes form rapidly by fluidized injection (mobilization of pressurized pore fluids) or passively by water, wind...
    24 KB (3,086 words) - 18:09, 16 October 2024
  • Thumbnail for Charnockite
    countries they have been mostly described as pyroxene granulites, pyroxene gneisses, anorthosites, or other names. They are typically of Proterozoic age. In...
    9 KB (1,053 words) - 07:40, 30 April 2024
  • Thumbnail for Donaueschingen
    the Danube. The municipal area extends continuously from the granite and gneiss of the Black Forest through the Triassic formations of the Schwarzwald-Baar...
    10 KB (1,106 words) - 17:23, 25 October 2024
  • Thumbnail for Red Sea Rift
    "Crustal underplating and evolution in the Red Sea Rift: Uplifted gabbro/gneiss crustal complexes on Zabargad and Brothers Islands". Journal of Geophysical...
    7 KB (917 words) - 15:19, 16 August 2024
  • Thumbnail for Pseudotachylyte
    Pseudotachylyte of Parijs (Orange Free State), and its Relation to 'Trap-Shotten Gneiss' and 'Flinty Crush-Rock'". Quarterly Journal of the Geological Society....
    22 KB (2,163 words) - 21:47, 23 May 2024
  • Thumbnail for History of radiation protection
    Ötztal valley. Some of the houses there were built on a bedrock of granite gneiss. From this porous subsoil, the radon present in the rock seeped freely into...
    263 KB (32,794 words) - 12:53, 28 October 2024
  • Thumbnail for Mining
    BC-AD 395) including granite, sandstone, limestone, basalt, travertine, gneiss, galena, and amethyst. Mining in Egypt occurred in the earliest dynasties...
    110 KB (13,064 words) - 10:42, 21 October 2024
  • Thumbnail for Bømlafjord Tunnel
    building from each end. The tunnel runs through an area composed mostly of gneiss, phyllite and greenstone. The tunnel was the longest subsea tunnel in Norway...
    15 KB (1,961 words) - 07:58, 29 October 2024
  • Thumbnail for Mount Everest
    of Mount Everest. It consists of sillimanite-K-feldspar grade schist and gneiss intruded by numerous sills and dikes of leucogranite ranging in thickness...
    270 KB (26,351 words) - 04:18, 1 November 2024
  • Thumbnail for Musgrave Block
    Musgrave Province) is an east-west trending belt of Proterozoic granulite-gneiss basement rocks approximately 500 kilometres (310 mi) long. The Musgrave...
    10 KB (1,412 words) - 00:29, 7 May 2024
  • Thumbnail for Christine Siddoway
    she earned her PhD in 1995. Her dissertation focused on the only known gneiss dome in Antarctica, in the Fosdick Mountains, Marie Byrd Land. As a graduate...
    18 KB (1,924 words) - 20:51, 30 July 2024
  • The first part is the northwestern region characterized by high-grade gneiss, such as Minto and Pikwitonei. The second part is the northeastern region...
    53 KB (5,513 words) - 03:22, 27 December 2023
  • Thumbnail for Vateria indica
    distribution. Vateria indica occurs in areas where the underlying rock is a gneissic complex, often laminated, which may be covered by laterite 9–10 m deep...
    33 KB (3,565 words) - 09:57, 10 July 2024
  • Thumbnail for Parinacota (volcano)
    basement rocks crop out as charnockite/granulite east and as amphibolite/gneiss west of the volcano, respectively. Other formations include the volcaniclastic...
    80 KB (9,576 words) - 04:02, 11 October 2024
  • Thumbnail for Taapaca
    Pliocene age. In some places, a Proterozoic basement formed by amphibolites, gneisses and serpentinites crops out. The volcanoes of Condoriri, Pomerape, Larancagua...
    39 KB (4,370 words) - 02:06, 18 August 2024
View (previous 20 | ) (20 | 50 | 100 | 250 | 500)