Rolling open Earth’s deepest forearc basin. / Pownall, Jonathan M; Hall, Robert; Lister, Gordon S.

In: Geology, Vol. 44, No. 11, 01.11.2016, p. 947-950.

Research output: Contribution to journalArticle

Published

Standard

Rolling open Earth’s deepest forearc basin. / Pownall, Jonathan M; Hall, Robert; Lister, Gordon S.

In: Geology, Vol. 44, No. 11, 01.11.2016, p. 947-950.

Research output: Contribution to journalArticle

Harvard

Pownall, JM, Hall, R & Lister, GS 2016, 'Rolling open Earth’s deepest forearc basin', Geology, vol. 44, no. 11, pp. 947-950. https://doi.org/10.1130/G38051.1

APA

Pownall, J. M., Hall, R., & Lister, G. S. (2016). Rolling open Earth’s deepest forearc basin. Geology, 44(11), 947-950. https://doi.org/10.1130/G38051.1

Vancouver

Pownall JM, Hall R, Lister GS. Rolling open Earth’s deepest forearc basin. Geology. 2016 Nov 1;44(11):947-950. https://doi.org/10.1130/G38051.1

Author

Pownall, Jonathan M ; Hall, Robert ; Lister, Gordon S. / Rolling open Earth’s deepest forearc basin. In: Geology. 2016 ; Vol. 44, No. 11. pp. 947-950.

BibTeX

@article{f38ee65aa0304c098fa5fef64a38b9c4,
title = "Rolling open Earth{\textquoteright}s deepest forearc basin",
abstract = "The Weber Deep—a 7.2-km-deep forearc basin within the tightly curved Banda arc of eastern Indonesia—is the deepest point of the Earth{\textquoteright}s oceans not within a trench. Several models have been proposed to explain the tectonic evolution of the Banda arc in the context of the ongoing (ca. 23 Ma–present) Australia–Southeast Asia collision, but no model explicitly accounts for how the Weber Deep achieved its anomalous depth. Here we propose that the Weber Deep formed by forearc extension driven by eastward subduction rollback. Substantial lithospheric extension in the upper plate was accommodated by a major, previously unidentified, low-angle normal fault system we name the “Banda detachment.” High-resolution bathymetry data reveal that the Banda detachment is exposed underwater over much of its 120 km down-dip and 450 km lateral extent, having produced the largest bathymetric expression of any fault discernable in the world{\textquoteright}s oceans. The Banda arc is a modern analogue for highly extended terranes preserved in the many regions that may similarly have “rolled open” behind migrating subduction zones.",
author = "Pownall, {Jonathan M} and Robert Hall and Lister, {Gordon S}",
year = "2016",
month = nov
day = "1",
doi = "10.1130/G38051.1",
language = "English",
volume = "44",
pages = "947--950",
journal = "Geology",
issn = "0091-7613",
publisher = "Geological Society of America",
number = "11",

}

RIS

TY - JOUR

T1 - Rolling open Earth’s deepest forearc basin

AU - Pownall, Jonathan M

AU - Hall, Robert

AU - Lister, Gordon S

PY - 2016/11/1

Y1 - 2016/11/1

N2 - The Weber Deep—a 7.2-km-deep forearc basin within the tightly curved Banda arc of eastern Indonesia—is the deepest point of the Earth’s oceans not within a trench. Several models have been proposed to explain the tectonic evolution of the Banda arc in the context of the ongoing (ca. 23 Ma–present) Australia–Southeast Asia collision, but no model explicitly accounts for how the Weber Deep achieved its anomalous depth. Here we propose that the Weber Deep formed by forearc extension driven by eastward subduction rollback. Substantial lithospheric extension in the upper plate was accommodated by a major, previously unidentified, low-angle normal fault system we name the “Banda detachment.” High-resolution bathymetry data reveal that the Banda detachment is exposed underwater over much of its 120 km down-dip and 450 km lateral extent, having produced the largest bathymetric expression of any fault discernable in the world’s oceans. The Banda arc is a modern analogue for highly extended terranes preserved in the many regions that may similarly have “rolled open” behind migrating subduction zones.

AB - The Weber Deep—a 7.2-km-deep forearc basin within the tightly curved Banda arc of eastern Indonesia—is the deepest point of the Earth’s oceans not within a trench. Several models have been proposed to explain the tectonic evolution of the Banda arc in the context of the ongoing (ca. 23 Ma–present) Australia–Southeast Asia collision, but no model explicitly accounts for how the Weber Deep achieved its anomalous depth. Here we propose that the Weber Deep formed by forearc extension driven by eastward subduction rollback. Substantial lithospheric extension in the upper plate was accommodated by a major, previously unidentified, low-angle normal fault system we name the “Banda detachment.” High-resolution bathymetry data reveal that the Banda detachment is exposed underwater over much of its 120 km down-dip and 450 km lateral extent, having produced the largest bathymetric expression of any fault discernable in the world’s oceans. The Banda arc is a modern analogue for highly extended terranes preserved in the many regions that may similarly have “rolled open” behind migrating subduction zones.

U2 - 10.1130/G38051.1

DO - 10.1130/G38051.1

M3 - Article

VL - 44

SP - 947

EP - 950

JO - Geology

JF - Geology

SN - 0091-7613

IS - 11

ER -