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Syn-eruptive agglutination of kimberlite volcanic ash

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Syn-eruptive agglutination of kimberlite volcanic ash. / Haddock, David; Manya, Shukrani; Brown, Richard J. et al.
In: Volcanica, Vol. 3, No. 1, 09.02.2020, p. 169-182.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Haddock, D, Manya, S, Brown, RJ, Jones, T, Wadsworth, FB, Dobson, KJ & M. Gernon, T 2020, 'Syn-eruptive agglutination of kimberlite volcanic ash', Volcanica, vol. 3, no. 1, pp. 169-182. https://doi.org/10.30909/vol.03.01.169182

APA

Haddock, D., Manya, S., Brown, R. J., Jones, T., Wadsworth, F. B., Dobson, K. J., & M. Gernon, T. (2020). Syn-eruptive agglutination of kimberlite volcanic ash. Volcanica, 3(1), 169-182. https://doi.org/10.30909/vol.03.01.169182

Vancouver

Haddock D, Manya S, Brown RJ, Jones T, Wadsworth FB, Dobson KJ et al. Syn-eruptive agglutination of kimberlite volcanic ash. Volcanica. 2020 Feb 9;3(1):169-182. doi: 10.30909/vol.03.01.169182

Author

Haddock, David ; Manya, Shukrani ; Brown, Richard J. et al. / Syn-eruptive agglutination of kimberlite volcanic ash. In: Volcanica. 2020 ; Vol. 3, No. 1. pp. 169-182.

Bibtex

@article{9300085e6d4a42449256d619c1e62788,
title = "Syn-eruptive agglutination of kimberlite volcanic ash",
abstract = "Pyroclastic deposits of the Holocene Igwisi Hills kimberlite volcanoes, Tanzania, preserve unequivocal evidence for rapid, syn-eruptive agglutination. The unusual pyroclasts are composed of ash-sized particles agglutinated to each other by thin necks. The textures suggest the magma was disrupted into droplets during ascent. Collisions between particles occurred within a volcanic plume and on deposition within the conduit to form a weakly agglutinated, porous pyroclastic deposit. Theoretical considerations indicate that agglutination occurred over short timescales. Agglutinated clasts were entrained into weak volcanic plumes and deposited around the craters. Our results support the notion that agglutination can occur during kimberlite eruptions, and that some coherent, dense rocks in ancient kimberlite pipes interpreted as intrusive rocks could instead represent agglutinated pyroclastic rocks. Differentiating between agglutinated pyroclastic rocks and effusive or intrusive rocks in kimberlite pipes is important because of the potential effects that pyroclastic processes might have on diamond concentrations in deposits.",
keywords = "Agglutination, Kimberlite, Pyroclasts, Volcanic ash, Welding",
author = "David Haddock and Shukrani Manya and Brown, {Richard J.} and Thomas Jones and Wadsworth, {Fabian B.} and Dobson, {Katherine J.} and {M. Gernon}, Thomas",
year = "2020",
month = feb,
day = "9",
doi = "10.30909/vol.03.01.169182",
language = "English",
volume = "3",
pages = "169--182",
journal = "Volcanica",
issn = "2610-3540",
publisher = "Volcanica",
number = "1",

}

RIS

TY - JOUR

T1 - Syn-eruptive agglutination of kimberlite volcanic ash

AU - Haddock, David

AU - Manya, Shukrani

AU - Brown, Richard J.

AU - Jones, Thomas

AU - Wadsworth, Fabian B.

AU - Dobson, Katherine J.

AU - M. Gernon, Thomas

PY - 2020/2/9

Y1 - 2020/2/9

N2 - Pyroclastic deposits of the Holocene Igwisi Hills kimberlite volcanoes, Tanzania, preserve unequivocal evidence for rapid, syn-eruptive agglutination. The unusual pyroclasts are composed of ash-sized particles agglutinated to each other by thin necks. The textures suggest the magma was disrupted into droplets during ascent. Collisions between particles occurred within a volcanic plume and on deposition within the conduit to form a weakly agglutinated, porous pyroclastic deposit. Theoretical considerations indicate that agglutination occurred over short timescales. Agglutinated clasts were entrained into weak volcanic plumes and deposited around the craters. Our results support the notion that agglutination can occur during kimberlite eruptions, and that some coherent, dense rocks in ancient kimberlite pipes interpreted as intrusive rocks could instead represent agglutinated pyroclastic rocks. Differentiating between agglutinated pyroclastic rocks and effusive or intrusive rocks in kimberlite pipes is important because of the potential effects that pyroclastic processes might have on diamond concentrations in deposits.

AB - Pyroclastic deposits of the Holocene Igwisi Hills kimberlite volcanoes, Tanzania, preserve unequivocal evidence for rapid, syn-eruptive agglutination. The unusual pyroclasts are composed of ash-sized particles agglutinated to each other by thin necks. The textures suggest the magma was disrupted into droplets during ascent. Collisions between particles occurred within a volcanic plume and on deposition within the conduit to form a weakly agglutinated, porous pyroclastic deposit. Theoretical considerations indicate that agglutination occurred over short timescales. Agglutinated clasts were entrained into weak volcanic plumes and deposited around the craters. Our results support the notion that agglutination can occur during kimberlite eruptions, and that some coherent, dense rocks in ancient kimberlite pipes interpreted as intrusive rocks could instead represent agglutinated pyroclastic rocks. Differentiating between agglutinated pyroclastic rocks and effusive or intrusive rocks in kimberlite pipes is important because of the potential effects that pyroclastic processes might have on diamond concentrations in deposits.

KW - Agglutination

KW - Kimberlite

KW - Pyroclasts

KW - Volcanic ash

KW - Welding

U2 - 10.30909/vol.03.01.169182

DO - 10.30909/vol.03.01.169182

M3 - Journal article

VL - 3

SP - 169

EP - 182

JO - Volcanica

JF - Volcanica

SN - 2610-3540

IS - 1

ER -