Geochronology and facies analysis of subaqueous volcanism of lower ordovician, Famatinian arc, Argentina

Armas, Paula; Cristofolini, Eber A.; Otamendi, Juan E.; Tibaldi, A; Barzola, Matías; Camilletti, Giuliano C.

doi:10.1016/j.jsames.2018.04.005

Cited by 10 publications

(2 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Despite limited exposure of upper-crustal Famatinian rocks, a significant body of work is devoted to characterizing the uppermost regions of the Famatinian arc (e.g., Harrington and Leanza, 1957;Turner 1967;Maisonave, 1973;Toselli, 1977, 1988;Toselli et al, 1990;Cisterna, 1994Cisterna, , 2001; Mángano and Buatois, 1994, 1997Aceñolaza et al, 1996;Saavedra et al, 1998;Mángano et al, 2003;Fanning et al, 2004;Dahlquist et al, 2008;Cisterna et al, 2010aCoira, 2014, 2018;Armas et al, 2016Armas et al, , 2018Coira, 2017). However, several significant issues remain, including questions specific to the Famatinian orogeny and regional arc-tectonics, as well as more generalized arc geodynamic processes.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Upper-crustal architecture and record of Famatinian arc activity in the Sierra de Narváez and Sierra de Las Planchadas, NW Argentina

Lusk

Ratschbacher

Larrovere

et al. 2021

Journal of South American Earth Sciences

View full text Add to dashboard Cite

This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Ma(Dahlquist et al, 2008), 470 ± 3 Ma, and 463 ± 2 Ma(Armas et al, 2018). Palinspastic restoration shows a minimum of 2% shortening prior to deposition of the mid-Ordovician Cerro Morado Group(Dávila et al 2003;Astini and Dávila 2004).…”

mentioning

confidence: 99%

Upper-crustal architecture and record of Famatinian arc activity in the Sierra de Narváez and Sierra de Las Planchadas, NW Argentina

Lusk

Ratschbacher

Larrovere

et al. 2021

Journal of South American Earth Sciences

View full text Add to dashboard Cite

show abstract

Elastic thermobarometry on metapelites across the crustal section of the Famatinian Arc, Argentina

Giovanini,

Befus,

Otamendi

et al. 2024

Contrib Mineral Petrol

View full text Add to dashboard Cite

We applied elastic thermobarometry on garnet-bearing migmatites along two transects through the crustal section at Sierra Valle Fértil-La Huerta, Argentina. We performed quartz-in-garnet barometry and zircon-in-garnet thermometry on metapelites from different paleo-depths across the crustal section. Our work recovers entrapment pressures ranging from 240 to 1330 MPa and entrapment temperatures between 691 and 1574 °C. The entrapment conditions are broadly consistent with anticipated pressures and temperatures along the crustal section derived previously using conventional, thermodynamic thermobarometers. The quartz-in-garnet barometer reproduces those conventionally established entrapment conditions when samples only experienced conditions within the alpha-quartz stability field. Raman-derived pressures for samples that experienced beta-quartz reference conditions are commonly much higher than those established by conventional barometry. Samples that preserve compressive (positive) residual pressures best reproduce reference entrapment pressures. Entrapment temperatures show high variability and overestimation of temperature conditions compared to conventional results. These results indicate elastic thermobarometry over- or under-estimates crystallization conditions in rocks crystallized at high temperatures, as is common in the Famatinian Arc deep-crust. We suggest that modeling quartz behavior across the alpha–beta transition may present challenges, as does shape maturation, viscous deformation, and radiation damage in zircon.

show abstract

Cambro-Ordovician stratigraphic record of two distinctive Famatinian belts fringing SW Gondwana: insights from SHRIMP U–Pb zircon ages and geochemistry from the Sierra de Famatina (NW Argentina)

Ramacciotti,

Casquet,

Cámera

et al. 2024

Int J Earth Sci (Geol Rundsch)

View full text Add to dashboard Cite

Geochronology and facies analysis of subaqueous volcanism of lower ordovician, Famatinian arc, Argentina

Cited by 10 publications

References 58 publications

Upper-crustal architecture and record of Famatinian arc activity in the Sierra de Narváez and Sierra de Las Planchadas, NW Argentina

Upper-crustal architecture and record of Famatinian arc activity in the Sierra de Narváez and Sierra de Las Planchadas, NW Argentina

Elastic thermobarometry on metapelites across the crustal section of the Famatinian Arc, Argentina

Cambro-Ordovician stratigraphic record of two distinctive Famatinian belts fringing SW Gondwana: insights from SHRIMP U–Pb zircon ages and geochemistry from the Sierra de Famatina (NW Argentina)

Contact Info

Product

Resources

About