A high-precision 40Ar/39Ar age for the Young Toba Tuff and dating of ultra-distal tephra: Forcing of Quaternary climate and implications for hominin occupation of India

Darren F. Mark; Michael Petraglia; Victoria C. Smith; Leah E. Morgan; Dan N. Barfod; Ben S. Ellis; Nick Pearce; J. N. Pal; Ravi Korisettar

doi:10.1016/j.quageo.2012.12.004

A high-precision 40Ar/39Ar age for the Young Toba Tuff and dating of ultra-distal tephra: Forcing of Quaternary climate and implications for hominin occupation of India

Darren F. Mark, Michael Petraglia, Victoria C. Smith, Leah E. Morgan, Dan N. Barfod, Ben S. Ellis, Nick Pearce, J. N. Pal, Ravi Korisettar

Department of Geography and Earth Sciences

Research output: Contribution to journal › Article › peer-review

Abstract

A new high-precision inverse isochron 40Ar/39Ar age for the youngest Toba super-eruption is presented: 75.0 ± 0.9 ka (1 sigma, full external precision, relative to the optimisation model of Renne et al., 2010, 2011). We present the most accurate and robust radio-isotopic age constraint for the Young Toba Tuff. 40Ar/39Ar ages for biotite shards harvested from ultra-distal Toba tephra deposits (>2500 km) preserved in archaeological sites in the Middle Son Valley and Jurreru Valley, India, establish provenance with the young Toba super-eruption. The air-fall tephra at these sites can be used as an isochronous horizon facilitating stratigraphic and temporal correlation throughout India. The high-precision 40Ar/39Ar age for the young Toba tephra can serve as a tie point for linking of the multiple Greenland ice cores beyond the GICC05 timescale, and permits correlation to other absolutely dated palaeoclimate archives for the testing of synchronicity in the response of the global climate system.

Original language	English
Pages (from-to)	90-103
Journal	Quaternary Geochronology
Volume	21
Early online date	10 Jan 2013
DOIs	https://doi.org/10.1016/j.quageo.2012.12.004
Publication status	Published - Jun 2014

Keywords

toba
tephra
40AR/39Ar
Son Valley
Jurreru Valley
hominin
climate

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Mark, D. F., Petraglia, M., Smith, V. C., Morgan, L. E., Barfod, D. N., Ellis, B. S., Pearce, N., Pal, J. N., & Korisettar, R. (2014). A high-precision 40Ar/39Ar age for the Young Toba Tuff and dating of ultra-distal tephra: Forcing of Quaternary climate and implications for hominin occupation of India. Quaternary Geochronology, 21, 90-103. https://doi.org/10.1016/j.quageo.2012.12.004

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title = "A high-precision 40Ar/39Ar age for the Young Toba Tuff and dating of ultra-distal tephra: Forcing of Quaternary climate and implications for hominin occupation of India",

abstract = "A new high-precision inverse isochron 40Ar/39Ar age for the youngest Toba super-eruption is presented: 75.0 ± 0.9 ka (1 sigma, full external precision, relative to the optimisation model of Renne et al., 2010, 2011). We present the most accurate and robust radio-isotopic age constraint for the Young Toba Tuff. 40Ar/39Ar ages for biotite shards harvested from ultra-distal Toba tephra deposits (>2500 km) preserved in archaeological sites in the Middle Son Valley and Jurreru Valley, India, establish provenance with the young Toba super-eruption. The air-fall tephra at these sites can be used as an isochronous horizon facilitating stratigraphic and temporal correlation throughout India. The high-precision 40Ar/39Ar age for the young Toba tephra can serve as a tie point for linking of the multiple Greenland ice cores beyond the GICC05 timescale, and permits correlation to other absolutely dated palaeoclimate archives for the testing of synchronicity in the response of the global climate system.",

keywords = "toba, tephra, 40AR/39Ar, Son Valley, Jurreru Valley, hominin, climate",

author = "Mark, {Darren F.} and Michael Petraglia and Smith, {Victoria C.} and Morgan, {Leah E.} and Barfod, {Dan N.} and Ellis, {Ben S.} and Nick Pearce and Pal, {J. N.} and Ravi Korisettar",

year = "2014",

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doi = "10.1016/j.quageo.2012.12.004",

language = "English",

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Mark, DF, Petraglia, M, Smith, VC, Morgan, LE, Barfod, DN, Ellis, BS, Pearce, N, Pal, JN & Korisettar, R 2014, 'A high-precision 40Ar/39Ar age for the Young Toba Tuff and dating of ultra-distal tephra: Forcing of Quaternary climate and implications for hominin occupation of India', Quaternary Geochronology, vol. 21, pp. 90-103. https://doi.org/10.1016/j.quageo.2012.12.004

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AU - Mark, Darren F.

AU - Petraglia, Michael

AU - Smith, Victoria C.

AU - Morgan, Leah E.

AU - Barfod, Dan N.

AU - Ellis, Ben S.

AU - Pearce, Nick

AU - Pal, J. N.

AU - Korisettar, Ravi

PY - 2014/6

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N2 - A new high-precision inverse isochron 40Ar/39Ar age for the youngest Toba super-eruption is presented: 75.0 ± 0.9 ka (1 sigma, full external precision, relative to the optimisation model of Renne et al., 2010, 2011). We present the most accurate and robust radio-isotopic age constraint for the Young Toba Tuff. 40Ar/39Ar ages for biotite shards harvested from ultra-distal Toba tephra deposits (>2500 km) preserved in archaeological sites in the Middle Son Valley and Jurreru Valley, India, establish provenance with the young Toba super-eruption. The air-fall tephra at these sites can be used as an isochronous horizon facilitating stratigraphic and temporal correlation throughout India. The high-precision 40Ar/39Ar age for the young Toba tephra can serve as a tie point for linking of the multiple Greenland ice cores beyond the GICC05 timescale, and permits correlation to other absolutely dated palaeoclimate archives for the testing of synchronicity in the response of the global climate system.

AB - A new high-precision inverse isochron 40Ar/39Ar age for the youngest Toba super-eruption is presented: 75.0 ± 0.9 ka (1 sigma, full external precision, relative to the optimisation model of Renne et al., 2010, 2011). We present the most accurate and robust radio-isotopic age constraint for the Young Toba Tuff. 40Ar/39Ar ages for biotite shards harvested from ultra-distal Toba tephra deposits (>2500 km) preserved in archaeological sites in the Middle Son Valley and Jurreru Valley, India, establish provenance with the young Toba super-eruption. The air-fall tephra at these sites can be used as an isochronous horizon facilitating stratigraphic and temporal correlation throughout India. The high-precision 40Ar/39Ar age for the young Toba tephra can serve as a tie point for linking of the multiple Greenland ice cores beyond the GICC05 timescale, and permits correlation to other absolutely dated palaeoclimate archives for the testing of synchronicity in the response of the global climate system.

KW - toba

KW - tephra

KW - 40AR/39Ar

KW - Son Valley

KW - Jurreru Valley

KW - hominin

KW - climate

UR - http://hdl.handle.net/2160/36372

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DO - 10.1016/j.quageo.2012.12.004

M3 - Article

SN - 1871-1014

VL - 21

SP - 90

EP - 103

JO - Quaternary Geochronology

JF - Quaternary Geochronology

ER -

A high-precision 40Ar/39Ar age for the Young Toba Tuff and dating of ultra-distal tephra: Forcing of Quaternary climate and implications for hominin occupation of India

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Keywords

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