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Sao Joaquim Plateau, Parana Magmatic Province: Field Features and Issues
(Univ Fed Parana, Editora, 2015-01-01)
The Sao Joaquim Plateau (SJP) is located in the Southern Highlands of Santa Catarina, which lays on the extreme southeast of the Brazilian Southern Highlands. The plateau is above Serra Geral Flood Basalts, which are ...
Platô de São Joaquim, Província Magmática do Paraná: Feições de Campo e Questões Genéticas
(2015-01-01)
The São Joaquim Plateau (SJP) is located in the Southern Highlands of Santa Catarina, which lays on the extreme southeast of the Brazilian Southern Highlands. The plateau is above Serra Geral Flood Basalts, which are ...
Highly differentiated "Topaz" rhyolite in the high plateau province of southern Peru
(Sociedad Geológica del PerúPE, 2002)
High-silica rhyolite is present in various parts of southern Perú. Rhyolite from two localites, the Cailloma caldera and the newly recognized Río Chalhuanca dome field, both in Arequipa Department, belong to the group of ...
Multi-banded pumice in the Campo de la Piedra Pómez rhyolitic ignimbrite (Southern Puna plateau): Pre-eruptive physical and chemical interactions between mafic and rhyolitic melts
(Pergamon-Elsevier Science Ltd, 2020-04-28)
The rhyolitic Campo de la Piedra Pómez ignimbrite crops out in the Southern Puna of NW Argentina and it isrelated to the youngest caldera-complex (Cerro Blanco caldera complex) of the Central Andes (73 - 4 kyr). Thepresence ...
Mantle derived crystal-poor rhyolitic ignimbrites: Eruptive mechanism from geochemical and geochronological data of the Piedra Parada caldera, Southern Argentina
(Elsevier Science, 2017-12)
Trace elements, isotopic modeling and U-Th-Pb SHRIMP zircon age constraints are used to reconstruct the eruption history and magmatic processes of the Piedra Parada Caldera. In the early Eocene, the crystal-poor Barda ...
Origin of late Miocene Peraluminous Mn-rich Garnet-bearing Rhyolitic Ashes in the Andean Foreland (Northern Argentina)
(Elsevier Science, 2018-09)
The Ramadas Volcanic Center on the eastern margin of the central Andean Puna plateau along the Olacapato-El Toro lineament in Argentina erupted a rare strongly peraluminous Mn-rich garnet-bearing rhyolitic tuff in the late ...
Petrogenesis of peraluminous magmas in the Central Andean backarc: the Huayra Huasi Volcanic Complex, NW Argentina
(Springer, 2021-07)
The Huayra Huasi Volcanic Complex of Miocene age (11.88±0.15 Ma U–Pb zircon) was emplaced in the Northern Puna plateau of Argentina, spatially associated with ignimbrites erupted from Altiplano–Puna Volcanic Complex calderas. ...
The Rhyolitic Plateau of the Marifil Formation (Jurassic): A Gondwana Paleosurface in the Southeastern Portion of the Northern Patagonian Massif
(Springer, 2014)
Along the southeastern border of the Northern Patagonian Massif of the provinces of Río Negro and Chubut, an extensive surface is presently called the “Rhyolitic” or “Ignimbritic Plateau.” This large geomorphological unit ...