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The Mull Paleocene dykes: some insights into the nature of major dyke swarms

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The Mull Paleocene dykes: some insights into the nature of major dyke swarms. / MacDonald, Raymond; Fettes, D. J.; Bagiński, Bogusław.
In: Scottish Journal of Geology, Vol. 51, No. 2, 11.2015, p. 116-124.

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

Harvard

MacDonald, R, Fettes, DJ & Bagiński, B 2015, 'The Mull Paleocene dykes: some insights into the nature of major dyke swarms', Scottish Journal of Geology, vol. 51, no. 2, pp. 116-124. https://doi.org/10.1144/sjg2014-016

APA

MacDonald, R., Fettes, D. J., & Bagiński, B. (2015). The Mull Paleocene dykes: some insights into the nature of major dyke swarms. Scottish Journal of Geology, 51(2), 116-124. https://doi.org/10.1144/sjg2014-016

Vancouver

MacDonald R, Fettes DJ, Bagiński B. The Mull Paleocene dykes: some insights into the nature of major dyke swarms. Scottish Journal of Geology. 2015 Nov;51(2):116-124. Epub 2015 Aug 14. doi: 10.1144/sjg2014-016

Author

MacDonald, Raymond ; Fettes, D. J. ; Bagiński, Bogusław. / The Mull Paleocene dykes : some insights into the nature of major dyke swarms. In: Scottish Journal of Geology. 2015 ; Vol. 51, No. 2. pp. 116-124.

Bibtex

@article{f38d21af64dd4321a29a3a30b9dad9a3,
title = "The Mull Paleocene dykes: some insights into the nature of major dyke swarms",
abstract = "At about 1000 km long and with a magmatic volume exceeding 850 km3, the Paleocene Mull Dyke Swarm qualifies as a giant dyke swarm. As such, it offers important insights into the nature of such swarms. Magma flowage laterally from the Mull Central Complex is supported by evidence of recent magma flowage in rift-related volcanic areas. Conduits were frequently used by more than one magma pulse at different times. Pre-heating of conduits by basaltic magma enabled salic magmas to propagate for >400 km from Mull. The Southern Upland Fault had a major influence on dyke propagation in the southern sector of the swarm, variably arresting magma migration or diverting magma vertically or laterally, in one case for 16 km laterally. A significant role for crustal heterogeneity in controlling dyke dynamics is advocated. Recent models point to important interactions between the dykes and adjacent Paleocene central complexes. The dyke swarm can potentially contribute significant information on the evolution of the Mull plumbing system, such as the formation of compositional zoning and the role of magma input in chamber rupture.",
author = "Raymond MacDonald and Fettes, {D. J.} and Bogus{\l}aw Bagi{\'n}ski",
year = "2015",
month = nov,
doi = "10.1144/sjg2014-016",
language = "English",
volume = "51",
pages = "116--124",
journal = "Scottish Journal of Geology",
issn = "0036-9276",
publisher = "Geological Society of London",
number = "2",

}

RIS

TY - JOUR

T1 - The Mull Paleocene dykes

T2 - some insights into the nature of major dyke swarms

AU - MacDonald, Raymond

AU - Fettes, D. J.

AU - Bagiński, Bogusław

PY - 2015/11

Y1 - 2015/11

N2 - At about 1000 km long and with a magmatic volume exceeding 850 km3, the Paleocene Mull Dyke Swarm qualifies as a giant dyke swarm. As such, it offers important insights into the nature of such swarms. Magma flowage laterally from the Mull Central Complex is supported by evidence of recent magma flowage in rift-related volcanic areas. Conduits were frequently used by more than one magma pulse at different times. Pre-heating of conduits by basaltic magma enabled salic magmas to propagate for >400 km from Mull. The Southern Upland Fault had a major influence on dyke propagation in the southern sector of the swarm, variably arresting magma migration or diverting magma vertically or laterally, in one case for 16 km laterally. A significant role for crustal heterogeneity in controlling dyke dynamics is advocated. Recent models point to important interactions between the dykes and adjacent Paleocene central complexes. The dyke swarm can potentially contribute significant information on the evolution of the Mull plumbing system, such as the formation of compositional zoning and the role of magma input in chamber rupture.

AB - At about 1000 km long and with a magmatic volume exceeding 850 km3, the Paleocene Mull Dyke Swarm qualifies as a giant dyke swarm. As such, it offers important insights into the nature of such swarms. Magma flowage laterally from the Mull Central Complex is supported by evidence of recent magma flowage in rift-related volcanic areas. Conduits were frequently used by more than one magma pulse at different times. Pre-heating of conduits by basaltic magma enabled salic magmas to propagate for >400 km from Mull. The Southern Upland Fault had a major influence on dyke propagation in the southern sector of the swarm, variably arresting magma migration or diverting magma vertically or laterally, in one case for 16 km laterally. A significant role for crustal heterogeneity in controlling dyke dynamics is advocated. Recent models point to important interactions between the dykes and adjacent Paleocene central complexes. The dyke swarm can potentially contribute significant information on the evolution of the Mull plumbing system, such as the formation of compositional zoning and the role of magma input in chamber rupture.

U2 - 10.1144/sjg2014-016

DO - 10.1144/sjg2014-016

M3 - Journal article

VL - 51

SP - 116

EP - 124

JO - Scottish Journal of Geology

JF - Scottish Journal of Geology

SN - 0036-9276

IS - 2

ER -