pillow lava quizlet
answer choices . SURVEY . Pahoehoe . Tags: Question 7 . Pillow lava It is basaltic lava that solidifies in an underwater environment and develops a structure that resembles a pile of pillows. Which lava only occurs under water? Next Question > Magma. 1. a submarine volcano 2.high silica content magma 3.an explosive eruption 4.a phreatomagmatic eruption 5.caldera formation A glowing cloud of hot gases and volcanic pieces: 1.was named in Hawaii because it's so common there. ... pillow. Well, before going into a discussion about this difference, let us see what each term refers to. Next Question > Pillow . Tags: Question 15 . answer choices . Pillow basalt is a type of Basalt in which lava erupts underwater or flows into the sea. 24) Which type of basaltic lava flow has its surface covered with sharp-edged, angular blocks and rubble? Seafloor Seismic Activity. pillow lava. white lava. Aa lava moves quickly on land and hardens to form sharp chunks. In fact, since 1959 the HVO seismic network has recorded large earthquake swarms at Lö'ihi during 1971-1972, 1975, 1984-1985, 1990-1991, and 1996, suggesting major submarine eruptions or magma intrusions into the upper part of Lö'ihi. Magma is not a type of lava. mushy lava . Pillow lava is a common eruptive product of submarine volcanoes and is characterized by thick sequences of discontinuous pillow-shaped masses which form under water. Eruptions under water or ice make pillow lava. What do you call lava flowing slowly forming a glassy surface with rounded wrinkles? https://www.nps.gov/goga/learn/education/pillow-basalt-faq.htm aa lava. 10 seconds . The key difference between lava and magma is that lava is the hot mixture of gases and molten rocks that come out of the volcano whereas magma is the molten rock material deep inside earth’s crust.. A) scoria B) pahoehoe C) pillow lava D) aa Answer: D Diff: 1 25) Which one of the following statements concerning volcanic blocks and bombs is true? Q. Lava that looks like round lumps of marshmallow. glue. The presence of pillow lava is evidence of what volcanic circumstance? There are three types of basalt lava flows: pillow, pahoehoe, and aa. This "pillow" texture is very common in underwater basaltic flows and is diagnostic of an underwater eruption environment when found in ancient rocks. SURVEY . Next Question > Aa . Lava Flows Basaltic lavas are much more fluid Types of basaltic flows Pahoehoe lava (a twisted or ropey texture) Pillow lava forms when lava enters the ocean Aa lava (rough, jagged blocky texture) Gases One to six percent of a magma by weight Mainly water vapour and carbon dioxide, but … pahoehoe lava. Pahoehoe lava moves slowly on land and often forms rock with a smooth or wrinkly surface. Pillow Lava: Pillow lavas are volumetrically the most abundant type because they are erupted at mid-ocean ridges and because they make up the submarine portion of seamounts and large intraplate volcanoes, like the Hawaii-Emperor seamount chain. The most common way to divide lava flows into distinct types is following: Pahoehoe lava flow, Aa lava flow, Blocky lava flow, and also Pillow lava flow. The lava type associated with submarine volcanism – pillow lava, is therefore underrepresented where ordinary people have a chance to see it. Hence, the difference between lava and magma pertains to their location. crater lava. Contact with the water quenches the surface and the lava forms a distinctive pillow shape, through which the hot lava breaks to form another pillow. 8/24/2017 Geology 101 Chapter 4 Flashcards | Quizlet 2/5 Block lava It is lava having the surface of angular blocks associated with material having andesitic and rhyolitic compositions. 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