Pillow lavas are lavas that contain characteristic pillow-shaped structures that are attributed to the extrusion of the lava underwater, or subaqueous...
7 KB (830 words) - 18:37, 18 April 2024
Underwater, they can form pillow lavas, which are rather similar to entrail-type pahoehoe lavas on land. Ultramafic lavas, such as komatiite and highly...
56 KB (6,577 words) - 03:59, 19 November 2024
the lava flow can be classified as pāhoehoe or 'a'ā. The two main types of lava field structures are defined as sheet flow lava and pillow lava. Sheet...
5 KB (535 words) - 00:55, 13 September 2024
Basalt (redirect from Basalt lava)
the surface and the lava forms a distinctive pillow shape, through which the hot lava breaks to form another pillow. This "pillow" texture is very common...
70 KB (7,838 words) - 23:50, 4 December 2024
Mount Edziza, so-named for its exposures of pillow lava. Another pulse of subglacial volcanism during the Pillow Ridge period created nearby Tsekone Ridge...
104 KB (12,406 words) - 00:06, 15 December 2024
solid crust forms around the lava. Advancing lava flows into this crust, forming what is known as pillow lava. Below ocean depths of about 2,200 metres (7...
11 KB (1,165 words) - 17:57, 21 December 2024
average every 2 to 3 years. The most common underwater flow is pillow lava, a rounded lava flow named for its unusual shape. Less common are glassy, marginal...
76 KB (7,663 words) - 16:26, 16 November 2024
Seamount (section Lava types)
an important part of seamount growth. The most common type of flow is pillow lava, named so after its distinctive shape. Less common are sheet flows, which...
47 KB (5,208 words) - 09:37, 18 November 2024
the volcano underwater, the form of lava typically erupted is pillow lava. Pillow lava is rounded balls of lava that was given very little time to cool...
19 KB (2,334 words) - 05:33, 9 October 2024
Extrusive sequence: basaltic pillow lavas show magma/seawater contact. Sheeted dike complex: vertical, parallel dikes that fed lavas above. High level intrusives:...
32 KB (3,876 words) - 13:06, 16 December 2024
Volcano (section Lava domes)
volcanic gases. Pillow lava is a common eruptive product of submarine volcanoes and is characterized by thick sequences of discontinuous pillow-shaped masses...
89 KB (10,094 words) - 16:54, 8 December 2024
Big Raven Plateau (redirect from Desolation Lava Field)
tubular pillow lava and subaerial lava flows; the pillow lava occurs at the northwestern and southeastern ends of Pillow Ridge while the subaerial lava flows...
52 KB (6,342 words) - 21:10, 11 December 2024
conservation zone of Arikok National Park. Conchi is enclosed by geological pillow lava formations and can be reached by hiking, horseback riding, or four-wheel-drive...
2 KB (84 words) - 19:39, 11 December 2024
greenstone belts around the world. He noted the existence of pillow lavas, indicating a lava being rapidly cooled in water, as well as the spinifex textures...
13 KB (1,426 words) - 10:34, 14 November 2024
such as basalt, komatiite, and tachylite, that comprise either pillow lavas, subaerial lava flows, or volcanic dykes. Typically, they are less resistant...
8 KB (1,036 words) - 23:46, 31 August 2024
D.B. (February 2009). "Cooling rates of basaltic hyaloclastites and pillow lava glasses from the HSDP2 drill core". Geochimica et Cosmochimica Acta....
6 KB (716 words) - 17:52, 17 July 2023
Mount Edziza (section Pillow Ridge Formation)
glaciovolcanic in origin. Pillow Ridge is a nearly 4-kilometre-long (2.5-mile), northwesterly-trending ridge of basaltic pillow lava, pillow breccia, tuff breccia...
79 KB (8,847 words) - 20:07, 20 December 2024
are the Lower Pillow Lavas, controversially separated from the Upper Pillow Lavas. Filling spaces in between the pillows in the pillow lava units are dispersed...
12 KB (1,509 words) - 11:44, 16 September 2024
(1992-08-01). "Walker, G.P.L. 1992. Morphometric study of pillow-size spectrum among pillow lavas". Bulletin of Volcanology. 54 (6): 459–474. Bibcode:1992BVol...
18 KB (1,885 words) - 20:05, 23 September 2024
the water needs of the otherwise mostly dry district of Chitradurga. Pillow lava rocks at Mardihalli village near Hiriyur has been declared as the National...
8 KB (682 words) - 01:04, 24 October 2024
the tectonic plates. It is composed of the upper oceanic crust, with pillow lavas and a dike complex, and the lower oceanic crust, composed of troctolite...
15 KB (1,849 words) - 12:31, 9 November 2024
Flood basalt (redirect from Plateau lava)
lava. Because the lavas are low in dissolved gases, pyroclastic rock is extremely rare. Except where the flows entered lakes and became pillow lava,...
43 KB (4,902 words) - 19:41, 13 December 2024
the heat of the lava from the subglacial volcano melts the overlying ice. The water quickly cools the lava, resulting in pillow lava shapes similar to...
7 KB (657 words) - 14:06, 8 July 2024
Tennena Cone (category Snowshoe Lava Field)
several types of volcanic rocks. Tennena Cone consists of alkali basalt pillow lavas, tuff breccias and lapilli tuffs of the younger Big Raven Formation which...
27 KB (3,019 words) - 20:53, 15 December 2024
Weathered Precambrian pillow lava in the Temagami Greenstone Belt of the Canadian Shield...
33 KB (3,521 words) - 17:56, 7 December 2024
were emplaced underneath ice or water and feature hyaloclastite and pillow lavas. These units rise to about 350–400 metres (1,150–1,310 ft) above the...
53 KB (5,482 words) - 21:34, 18 December 2024
the continental crust, the oceanic crust is composed predominantly of pillow lava and sheeted dikes with the composition of mid-ocean ridge basalt, with...
13 KB (1,646 words) - 03:35, 20 December 2024
produced pillow lava, which are produced by the rapid cooling of the magma when it comes in contact with water, obtaining their peculiar shape. This pillow-lava...
213 KB (21,875 words) - 00:35, 13 December 2024
providing employment and attracting new residents. The pyroclastic and pillow lava at Kolar Gold Fields have been declared a National Geological Monument...
21 KB (1,666 words) - 17:27, 22 November 2024
promotion and enhancement of geotourism. Pillow Lava, Iron ore belt of Nomira is an exposure of ellipsoidal pillow lava of a maximum thickness of 2m x 0.6m...
35 KB (2,649 words) - 10:46, 14 December 2024