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Initiation of a Proto‐transform Fault Prior to Seafloor Spreading

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Initiation of a Proto‐transform Fault Prior to Seafloor Spreading. / Illsley-Kemp, Finnigan; Bull, Jonathan M.; Keir, D; Gerya, T.; Pagli, Carolina; Gernon, Thomas; Ayele, A; Goitom, Berhe; Hammond, James; Kendall, J M.

In: Geochemistry, Geophysics, Geosystems, Vol. 19, No. 12, 28.12.2018, p. 4744-4756.

Research output: Contribution to journalArticle

Harvard

Illsley-Kemp, F, Bull, JM, Keir, D, Gerya, T, Pagli, C, Gernon, T, Ayele, A, Goitom, B, Hammond, J & Kendall, JM 2018, 'Initiation of a Proto‐transform Fault Prior to Seafloor Spreading', Geochemistry, Geophysics, Geosystems, vol. 19, no. 12, pp. 4744-4756. https://doi.org/10.1029/2018GC007947

APA

Illsley-Kemp, F., Bull, J. M., Keir, D., Gerya, T., Pagli, C., Gernon, T., ... Kendall, J. M. (2018). Initiation of a Proto‐transform Fault Prior to Seafloor Spreading. Geochemistry, Geophysics, Geosystems, 19(12), 4744-4756. https://doi.org/10.1029/2018GC007947

Vancouver

Illsley-Kemp F, Bull JM, Keir D, Gerya T, Pagli C, Gernon T et al. Initiation of a Proto‐transform Fault Prior to Seafloor Spreading. Geochemistry, Geophysics, Geosystems. 2018 Dec 28;19(12):4744-4756. https://doi.org/10.1029/2018GC007947

Author

Illsley-Kemp, Finnigan ; Bull, Jonathan M. ; Keir, D ; Gerya, T. ; Pagli, Carolina ; Gernon, Thomas ; Ayele, A ; Goitom, Berhe ; Hammond, James ; Kendall, J M. / Initiation of a Proto‐transform Fault Prior to Seafloor Spreading. In: Geochemistry, Geophysics, Geosystems. 2018 ; Vol. 19, No. 12. pp. 4744-4756.

Bibtex

@article{9d79661a631f438f89c21f032cdcc56a,
title = "Initiation of a Proto‐transform Fault Prior to Seafloor Spreading",
abstract = "Transform faults are a fundamental tenet of plate tectonics, connecting offset extensional segments of mid‐ocean ridges in ocean basins worldwide. The current consensus is that oceanic transform faults initiate after the onset of seafloor spreading. However, this inference has been difficult to test given the lack of direct observations of transform fault formation. Here we integrate evidence from surface faults, geodetic measurements, local seismicity, and numerical modeling of the subaerial Afar continental rift and show that a proto‐transform fault is initiating during the final stages of continental breakup. This is the first direct observation of proto‐transform fault initiation in a continental rift and sheds unprecedented light on their formation mechanisms. We demonstrate that they can initiate during late‐stage continental rifting, earlier in the rifting cycle than previously thought. Future studies of volcanic rifted margins cannot assume that oceanic transform faults initiated after the onset of seafloor spreading.",
keywords = "transform fault, continental rifting, East African Rift",
author = "Finnigan Illsley-Kemp and Bull, {Jonathan M.} and D Keir and T. Gerya and Carolina Pagli and Thomas Gernon and A Ayele and Berhe Goitom and James Hammond and Kendall, {J M}",
year = "2018",
month = "12",
day = "28",
doi = "10.1029/2018GC007947",
language = "English",
volume = "19",
pages = "4744--4756",
journal = "Geochemistry, Geophysics, Geosystems",
issn = "1525-2027",
publisher = "American Geophysical Union",
number = "12",

}

RIS - suitable for import to EndNote

TY - JOUR

T1 - Initiation of a Proto‐transform Fault Prior to Seafloor Spreading

AU - Illsley-Kemp, Finnigan

AU - Bull, Jonathan M.

AU - Keir, D

AU - Gerya, T.

AU - Pagli, Carolina

AU - Gernon, Thomas

AU - Ayele, A

AU - Goitom, Berhe

AU - Hammond, James

AU - Kendall, J M

PY - 2018/12/28

Y1 - 2018/12/28

N2 - Transform faults are a fundamental tenet of plate tectonics, connecting offset extensional segments of mid‐ocean ridges in ocean basins worldwide. The current consensus is that oceanic transform faults initiate after the onset of seafloor spreading. However, this inference has been difficult to test given the lack of direct observations of transform fault formation. Here we integrate evidence from surface faults, geodetic measurements, local seismicity, and numerical modeling of the subaerial Afar continental rift and show that a proto‐transform fault is initiating during the final stages of continental breakup. This is the first direct observation of proto‐transform fault initiation in a continental rift and sheds unprecedented light on their formation mechanisms. We demonstrate that they can initiate during late‐stage continental rifting, earlier in the rifting cycle than previously thought. Future studies of volcanic rifted margins cannot assume that oceanic transform faults initiated after the onset of seafloor spreading.

AB - Transform faults are a fundamental tenet of plate tectonics, connecting offset extensional segments of mid‐ocean ridges in ocean basins worldwide. The current consensus is that oceanic transform faults initiate after the onset of seafloor spreading. However, this inference has been difficult to test given the lack of direct observations of transform fault formation. Here we integrate evidence from surface faults, geodetic measurements, local seismicity, and numerical modeling of the subaerial Afar continental rift and show that a proto‐transform fault is initiating during the final stages of continental breakup. This is the first direct observation of proto‐transform fault initiation in a continental rift and sheds unprecedented light on their formation mechanisms. We demonstrate that they can initiate during late‐stage continental rifting, earlier in the rifting cycle than previously thought. Future studies of volcanic rifted margins cannot assume that oceanic transform faults initiated after the onset of seafloor spreading.

KW - transform fault

KW - continental rifting

KW - East African Rift

U2 - 10.1029/2018GC007947

DO - 10.1029/2018GC007947

M3 - Article

VL - 19

SP - 4744

EP - 4756

JO - Geochemistry, Geophysics, Geosystems

JF - Geochemistry, Geophysics, Geosystems

SN - 1525-2027

IS - 12

ER -