Ocean island basalt (OIB) is a volcanic rock, usually basaltic in composition, erupted in oceans away from tectonic plate boundaries. Although ocean island...
26 KB (2,892 words) - 17:06, 17 May 2024
basalts range from 6 to 10 for mid-ocean ridge tholeiitic basalt (normalized to atmospheric values), but to 15–24 and more for ocean-island basalts thought...
69 KB (7,757 words) - 15:00, 25 April 2024
flood basalt (or plateau basalt) is the result of a giant volcanic eruption or series of eruptions that covers large stretches of land or the ocean floor...
42 KB (4,896 words) - 11:47, 19 April 2024
subtly from mid-ocean-ridge basalts. These basalts, also called ocean island basalts (OIBs), are analysed in their radiogenic and stable isotope compositions...
46 KB (5,776 words) - 21:11, 16 April 2024
of basalt known as MORB for mid-ocean ridge basalt, and gabbro below it in the lower oceanic crust. Mid-ocean ridge basalt is a tholeiitic basalt and...
36 KB (4,635 words) - 15:55, 23 April 2024
Large igneous province (redirect from Continental flood basalt)
continental flood basalts, oceanic plateaus, large dike swarms (the eroded roots of a volcanic province), and volcanic rifted margins. Mafic basalt sea floors...
42 KB (4,542 words) - 14:16, 25 March 2024
associated with volcanic activity, such as oceanic islands, continental rifts and volcanic fields. Alkali basalt is characterized by relatively high alkali...
6 KB (559 words) - 09:05, 2 August 2023
composition of basalts found at hotspots differs subtly from mid-ocean-ridge basalts. These basalts, also called ocean island basalts (OIBs), are analysed...
97 KB (11,934 words) - 11:34, 2 April 2024
Azores hotspot (category Hotspots of the Atlantic Ocean)
Northern Atlantic Ocean. The Azores is relatively young and is associated with a bathymetric swell, a gravity anomaly and ocean island basalt geochemistry...
7 KB (727 words) - 03:02, 2 May 2023
Fournaise[4] volcano on Réunion Island and various other oceanic island volcanoes. Picrite basalt has erupted in historical times from Mauna Loa during the...
6 KB (625 words) - 03:40, 25 May 2024