Volcanic rock that is intermediate in composition between basalt and andesite
Basaltic andesite from Parícutin volcano in Mexico
Basaltic andesite is a volcanic rock that is intermediate in composition between basalt and andesite. It is composed predominantly of augite and plagioclase. Basaltic andesite can be found in volcanoes around the world, including in Central America[1] and the Andes of South America.[2]
^Jordan, B.R.; Sigurdsson, H.; Carey, S.; Lundin, S.; Rogers, R.D.; Singer, B.; Barquero-Molina, M. (2007). "Petrogenesis of Central American Tertiary ignimbrites and associated Caribbean Sea tephra". In Mann, Paul (ed.). Geologic and tectonic development of the Caribbean plate boundary in northern Central America. Geological Society of America. p. 161.
^Kay, Suzanne Mahlburg; Copeland, Peter (2006). "Early to middle Miocene backarc magmas of the Neuquén Basin: Geochemical consequences of slab shallowing and the westward drift of South America". In Kay, Suzanne Mahlburg; Ramos, Victor A. (eds.). Evolution of an Andean margin: a tectonic and magmatic view from the Andes to the Neuquén Basin (35 degrees-39 degrees S lat). Geological Society of America. p. 209.
Basalticandesite is a volcanic rock that is intermediate in composition between basalt and andesite. It is composed predominantly of augite and plagioclase...
of hot basaltic melt into the system. When this basaltic material mixes with the evolved rhyolitic magma, the composition is returned to andesite, its intermediate...
surface, are basaltic; the lunar maria are plains of flood-basaltic lava flows; and basalt is a common rock on the surface of Mars. Molten basalt lava has...
include tholeiitic basalt, ferro-basalt, tholeiitic basalticandesite, tholeiitic andesite, dacite and rhyolite. The variety of basalt in the series was...
olivine tholeiite to medium-potassium calc-alkaline basalt, basalticandesite to shoshonitic basalticandesite. The Mazama volcanic complex originally formed...
The andesite line is the most significant regional geologic distinction in the Pacific Ocean basin. It separates the mafic basaltic volcanic rocks of...
the Ring of Fire's stratovolcanoes are mainly andesite and basalticandesite but dacite, rhyolite, basalt and some other rarer types also occur. Other...
of their products are basalticandesite. 20th century activity produced mostly basaltic rocks until 2008, when basalticandesite reappeared. Vents in the...
south of Bandung, West Java, Indonesia. The profile is broad with basalticandesite, type of geological stone. Indonesia portal List of volcanoes in Indonesia...
tholeiitic series – basalticandesites and andesites. The calc-alkaline series – andesites. The alkaline series – subgroups of alkaline basalts and the rare...
center of the volcano. The volcano is primarily composed of basalt and basalticandesite lava flows, and has a 4.3 by 7.5 mi (7 by 12 km) caldera at the...
is poor in lime. Sand grains that were also found contained fresh basalticandesite. The sediments found in the trenches are hypothesized to have been...
populations for thousands of years. McLoughlin consists largely of basalticandesite. It underwent three major eruptive periods before its last activity...
settled totally underwater. Andesite was the dominant lava type with some samples mafic enough to be classified as basalticandesite. The eruption had global...
magma can be involved, but magma with about 55% or more silica (e.g. basalticandesite) is most common. Increasing silica levels increase the viscosity of...
prominent sulfur deposits. The volcanic cones are composed of andesite, basalticandesite and dacite. The volcano is mantled in ash from the 1912 eruption...
variety of volcanic systems, ranging from the basaltic Erta Ale lake in Ethiopia and the basalticandesite volcano of Villarrica, Chile, to the unique phonolitic...
tholeiitic series – basalticandesites and andesites. The calc-alkaline series – andesites. The alkaline series – subgroups of alkaline basalts and the rare...
concentric craters at its summit. Cinder Cone is comprised by five basalticandesite and andesite lava flows, and it also has two cinder cone volcanoes, with...
TAS diagram are listed below. B (Basalt)—Use normative mineralogy to subdivide. O1 (Basalticandesite) O2 (Andesite) O3 (Dacite) R (Rhyolite) T (Trachyte...
associated Quaternary volcanoes in Taranaki province that have erupted from andesite magmas that have not extensively assimilated enriched crust unlike the...
Erciyes Dagi has erupted basalt, basalticandesite, andesite, dacite, rhyodacite, and rhyolite. The rocks are chiefly andesite with smaller amounts of...
Formed during the Pleistocene epoch, the mountain consists mainly of basalticandesite lava and was heavily glaciated in the past. While other Oregon volcanoes...
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