‘Large Igneous Provinces (LIPs)’: Definition, recommended terminology, and a hierarchical classification

Sheth, Hetu

doi:10.1016/j.earscirev.2007.07.005

Cited by 90 publications

(46 citation statements)

References 25 publications

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“…In this sense, although Walker (1993Walker ( , 1999Walker ( , 2000 was only partly correct when he briefly mentioned flood basalt eruptions as monogenetic, he should be credited for at least thinking about an issue which has been little discussed by others. Our work follows on the lines of Szakács (1994, Sheth (2007), Cañón-Tapia (2010), and several others in Szakács and Cañón- , and emphasizes a need for clear concepts and correct terminology and definitions. Some of the existing terms, though often used incorrectly and inappropriately, are popular because they are catchy and can be turned into catchier acronyms.…”

Section: Discussionmentioning

confidence: 98%

“…a good example is "large Igneous Provinces" (lIPs), which, as defined by Coffin and Eldholm (1993), include mafic provinces formed by processes other than sea-floor spreading and plate tectonics. Sheth (2007) argued that the term ought to include many more igneous provinces besides flood basalts, of all compositions, emplacement depths, origins, and tectonic settings. The "revised lIP definition" (Bryan and Ernst 2008) has improved little over the original in that an intraplate setting and "intraplate geochemical affinity" (whatever that means) of the volcanic rocks-ironically the most debatable aspects-are considered essential characteristics (see Cañon-Tapia and Szakács 2010 for a detailed discussion).…”

Section: Discussionmentioning

confidence: 99%

“…large polygenetic volcanoes such as Mauna loa or Etna can contain hundreds of small monogenetic volcanoes on their slopes, produced by flank eruptions. Flood basalt provinces may also contain monogenetic volcanic fields (Camp et al 1991;németh et al 2003, 2007németh 2004;Kshirsagar et al 2011). Besides, many small, "monogenetic"-looking volcanoes with simple morphology have complex internal architectures and polygenetic histories (e.g., Schmincke 2004;németh 2010;Sheth 2012).…”

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confidence: 98%

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Are flood basalt eruptions monogenetic or polygenetic?

Sheth

Cañón‐Tapia

2014

Int J Earth Sci (Geol Rundsch)

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

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confidence: 98%

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Are flood basalt eruptions monogenetic or polygenetic?

Sheth

Cañón‐Tapia

2014

Int J Earth Sci (Geol Rundsch)

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“…The CFBs are individual volcanic constructs that are laterally extensive (several hundred km 2 ) and thick (about 1 km average), representing the eruption of enormous volumes of mantle-derived magma in relatively short-time periods (few million years) generally of tholeiitic composition (Coffin & Eldholm 1992;Sheth 2007).…”

Section: Introductionmentioning

confidence: 99%

The role of viscosity in the emplacement of high-temperature acidic flows of Serra Geral Formation in Torres Syncline (Rio Grande do Sul State, Brazil)

Simões¹,

Rossetti²,

Lima³

et al. 2014

Braz. J. Geol.

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ABSTRACT:The acidic flows from Serra Geral Formation in Torres Syncline, Rio Grande do Sul, Brazil, are on the top of a volcanic sequence composed by a complex facies association of compound, simple and rubbly pahoehoe basic flows, acidic lava domes, and tabular acidic lava flows. The origin and emplacement conditions of the acidic volcanic rocks are discussed in this paper based on petrology, on calculated apatite saturation thermometry temperatures, and on estimated viscosity data. The liquidus temperatures for metaluminous rhyodacite to rhyolite samples are about 1,067.5 ± 25ºC in average. The viscosity (η) values vary from 10 5 to 10 6 Pas for anhydrous conditions, suggesting the emplacement of high-temperaturelow-viscosity lava flows and domes. The occurrence of acidic lava domes above simple pahoehoe flows as flow-banded vitrophyres was under low effusion rates, in spite of their high temperature and low viscosities, which are reflected in their small height. The emplacement of lava domes has continued until the eruption of rubbly pahoehoe flows and the geometry of these deposits rugged the relief. Presence of tabular acidic lava flows covering the landscape indicates that it was under high effusion rates conditions and such flows had well-insulated cooled surface crusts. The capacity to attain greater distances and overpass relief obstacles is explained not only by high effusion rates, but also by very low viscosities at the time of emplacement.

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“…A volumetrically important volcanic province in southern Mexico is the Mexican Volcanic Belt (MVB) that has also been proposed to be classified as a large igneous province [6]. The MVB (Fig.…”

Section: Introductionmentioning

confidence: 99%

Continental Rift Setting for the Central Part of the Mexican Volcanic Belt: A Statistical Approach

Verma¹

2009

TOGEOJ

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I prepared compilations of geochemical data from the central part of the Mexican Volcanic Belt (C-MVB), the Central American Volcanic Arc (CAVA) from Guatemala to northwestern Costa Rica, the continental arc of the Andes in South America, other mostly island arcs, extensional and continental break-up regions, and continental rifts. Using quantitative statistical methods, the origin of the C-MVB is constrained as a continental rift. Specifically, this continental rift setting for the C-MVB is inferred from conventional bivariate discrimination diagrams, new natural logarithmtransformed correct statistics-based discriminant function diagrams, quantitative Nb/Nb* parameter, and 99% confidence limits of the mean for the ratios of slab-or continental crust-sensitive and mantle-sensitive parameters. The subductionrelated models based on qualitative interpretations most commonly proposed for the Mexican Volcanic Belt in the literature are not supported from these robust quantitative constraints. All geological, structural, geochemical, isotopic (Sr, Nd, Pb, Os, and Be), and geophysical data are in fact consistent with this statistics-based conclusion of the continental rift setting and exclude involvement of the subducted slab from the genesis of the C-MVB magmas.

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‘Large Igneous Provinces (LIPs)’: Definition, recommended terminology, and a hierarchical classification

Cited by 90 publications

References 25 publications

Are flood basalt eruptions monogenetic or polygenetic?

Are flood basalt eruptions monogenetic or polygenetic?

The role of viscosity in the emplacement of high-temperature acidic flows of Serra Geral Formation in Torres Syncline (Rio Grande do Sul State, Brazil)

Continental Rift Setting for the Central Part of the Mexican Volcanic Belt: A Statistical Approach

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