Quantitative P-T paths from zoned minerals: Theory and tectonic applications

Spear, Frank S.; Selverstone, Jane

doi:10.1007/bf00371203

Cited by 338 publications

(156 citation statements)

References 14 publications

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“…Furthermore, P -T-t data (e.g. Spear & Selverstone 1983; collected from the interiors of FAT belts have been employed to interpret the burial, thermal and subsequent uplift histories operating during emplacement of thrust sheets. In addition, geochronology studies using isotopes, magnetostratigraphy, fission tracks, cosmogenic nuclides, and so on (e.g.…”

mentioning

confidence: 99%

Kinematic evolution and structural styles of fold-and-thrust belts

Poblet

Lisle

2011

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Fold-and-thrust (FAT) belts occur worldwide and have long been the focus of research of structural geologists who have devised a variety of techniques to image, characterize and model their main structural features. This introductory chapter reviews the principal geological features of FAT belts formed in different settings, emphasizing aspects related to their kinematic evolution and structural styles. Despite great advances, challenges remain, particularly in the understanding of the spatial and temporal evolution (4D) of FAT belts and their controlling factors. These research efforts are being assisted by the growing availability to researchers of relatively new tools to collect field data, high quality 3D seismic data, and computer and laboratory modelling tools. This volume includes technical papers presented in the conference 'International Meeting of Young Researchers in Structural Geology and Tectonics (YORSGET-08)' held in Oviedo (Spain), together with other papers on the same theme. These papers deal with FAT belts in different parts of the world and cover a broad range of different aspects, from detailed structural analysis of single structures to regional issues, and from studies based on classical field structural geology to modelling.

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mentioning

confidence: 99%

Kinematic evolution and structural styles of fold-and-thrust belts

Poblet

Lisle

2011

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“…Mg-rich garnet is generally related to temperature close to peak metamorphic conditions (e.g. Spear and Selverstone, 1983), being in line with the flat chemical profile (e.g. Spear, 1993;Ganguly, 2002).…”

Section: Garnetmentioning

confidence: 57%

Metamorphic history and geodynamic significance of the Early Cretaceous Sabzevar granulites (Sabzevar structural zone, NE Iran)

et al. 2011

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Abstract. The Iranian ophiolites are part of the vast orogenic suture zones that mark the Alpine-Himalayan convergence zone. Few petrological and geochronological data are available from these ophiolitic domains, hampering a full assessment of the timing and regimes of subduction zone metamorphism and orogenic construction in the region. This paper describes texture, geochemistry, and the pressuretemperature path of the Early Cretaceous mafic granulites that occur within the Tertiary Sabzevar ophiolitic suture zone of NE Iran. Whole rock geochemistry indicates that the Sabzevar granulites are likely derived from a MORB-type precursor. They are thus considered as remnants of a dismembered dynamo-thermal sole formed during subduction of a back-arc basin (proto-Sabzevar Ocean) formed in the upper-plate of the Neotethyan slab. The metamorphic history of the granulites suggests an anticlockwise pressuretemperature loop compatible with burial in a hot subduction zone, followed by cooling during exhumation. Transition from a nascent to a mature stage of oceanic subduction is the geodynamic scenario proposed to accomplish for the reconstructed thermobaric evolution. When framed with the regional scenario, results of this study point to diachronous and independent tectonic evolutions of the different ophiolitic domains of central Iran, for which a growing disparity in the timing of metamorphic equilibration and of pressuretemperature paths can be expected to emerge with further investigations.

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“…Therefore, a variety of petrologic problems may be addressed by this method. Following problems have been examined by Gibbs method [19] [20]: (i) calculation of metamorphic P-T paths from zoned garnets (ii) analysis of the phase equilibria of metamorphic systems (iii) analysis of the effects of fractional crystallization on the evolution of metamorphic mineral assemblages (iv) calculation of a petrogenetic grid for pelitic schists. Spear et al (1991) [11] developed computer programs for Apple Macintosh computer that are designed to facilitate metamorphic petrology calculations and to explore the tectonic significance of P-T-t paths through thermal modelling.…”

Section: Computer Program Gibbs Bymentioning

confidence: 99%

Computer Programs for P-T History of Metamorphic Rocks using Pseudosection Approach

Jowhar¹

2012

IJCA

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In this paper computer program THERMOCALC, GIBBS and THERIAK-DOMINO are discussed and pseudosections are generated on some chemical data taken from the published literature from the Himalaya and Alps and also new chemical and EPMA data generated from the Garhwal Himalaya to demonstrate the capabilities of THERMOCALC and THERIAK-DOMINO. Usefulness and limitations of computed pseudosections (equilibrium assemblage diagrams) with THERIAK-DOMINO and THERMOCALC in understanding evolutionary history of metamorphic rocks are discussed

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Quantitative P-T paths from zoned minerals: Theory and tectonic applications

Cited by 338 publications

References 14 publications

Kinematic evolution and structural styles of fold-and-thrust belts

Kinematic evolution and structural styles of fold-and-thrust belts

Metamorphic history and geodynamic significance of the Early Cretaceous Sabzevar granulites (Sabzevar structural zone, NE Iran)

Computer Programs for P-T History of Metamorphic Rocks using Pseudosection Approach

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