Searching for the 1912 Maymyo earthquake : new evidence from paleoseismic investigations along the Kyaukkyan Fault, Myanmar. / Crosetto, Silvia; Watkinson, Ian; Min, Soe; Falucci, Emanuela; Gori, Stefano; Thein, Pyi Soe; Sudeep.

In: Quaternary International, Vol. 532, 10.11.2019, p. 75-86.

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Searching for the 1912 Maymyo earthquake : new evidence from paleoseismic investigations along the Kyaukkyan Fault, Myanmar. / Crosetto, Silvia; Watkinson, Ian; Min, Soe; Falucci, Emanuela; Gori, Stefano; Thein, Pyi Soe; Sudeep.

In: Quaternary International, Vol. 532, 10.11.2019, p. 75-86.

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Crosetto, Silvia ; Watkinson, Ian ; Min, Soe ; Falucci, Emanuela ; Gori, Stefano ; Thein, Pyi Soe ; Sudeep. / Searching for the 1912 Maymyo earthquake : new evidence from paleoseismic investigations along the Kyaukkyan Fault, Myanmar. In: Quaternary International. 2019 ; Vol. 532. pp. 75-86.

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@article{ebc5186c29254dfeaec0d5a384535b03,
title = "Searching for the 1912 Maymyo earthquake: new evidence from paleoseismic investigations along the Kyaukkyan Fault, Myanmar",
abstract = "The Great Burma earthquake (MsGR 8.0; Ms 7.6 - 7.7) occurred on May 23rd, 1912, and was one of the most remarkable early 1900's seismic events in Asia as described by Gutenberg and Richter (1954). The earthquake, focused near Maymyo, struck the Northern Shan State in eastern Myanmar. Contemporary evaluation of damage distribution and oral accounts led to a correlation between the earthquake and the topographically prominent Kyaukkyan Fault near the western margin of the Shan Plateau, although direct evidence has never been reported. This study aims to find evidence of paleoseismic activity, and to better understand the relationship between the 1912 earthquake and the Kyaukkyan Fault. Paleoseismic trenching along the Kyaukkyan Fault revealed evidence of several surface rupturing events. The northernmost trench exposes at least two visible rupture events since 4660 ± 30 BP: an older rupture stratigraphically constrained by AMS 14C dating to between 4660 ± 30 BP and 1270 ± 30 BP, and a younger rupture formed after 1270 ± 30 BP. The presence of pottery, bricks and cooking-related charcoal in the younger faulted stratigraphy demonstrates Kyaukkyan Fault activity within human times, and a possible correlation between the younger rupture and the 1912 Maymyo earthquake is not excluded. The southern paleoseismic trench, within a broad transtensional basin far from bounding faults, exposes two (undated) surface ruptures. Further study is required to correlate those ruptures to the events dated in the north. These preliminary paleoseismological results constitute the first quantitative evidence of paleoseismic activity along the northern ~170 km of the Kyaukkyan Fault, and support existing evidence that the Kyaukkyan Fault is an active but slow-slipping structure with a long interseismic period.",
keywords = "paleoseismology, strike-slip, active tectonics, surface rupture, radiocarbon, calcrete",
author = "Silvia Crosetto and Ian Watkinson and Soe Min and Emanuela Falucci and Stefano Gori and Thein, {Pyi Soe} and Sudeep",
year = "2019",
month = "11",
day = "10",
doi = "10.1016/j.quaint.2019.09.042",
language = "English",
volume = "532",
pages = "75--86",
journal = "Quaternary International",
issn = "1040-6182",
publisher = "Elsevier Limited",

}

RIS

TY - JOUR

T1 - Searching for the 1912 Maymyo earthquake

T2 - new evidence from paleoseismic investigations along the Kyaukkyan Fault, Myanmar

AU - Crosetto, Silvia

AU - Watkinson, Ian

AU - Min, Soe

AU - Falucci, Emanuela

AU - Gori, Stefano

AU - Thein, Pyi Soe

AU - Sudeep, null

PY - 2019/11/10

Y1 - 2019/11/10

N2 - The Great Burma earthquake (MsGR 8.0; Ms 7.6 - 7.7) occurred on May 23rd, 1912, and was one of the most remarkable early 1900's seismic events in Asia as described by Gutenberg and Richter (1954). The earthquake, focused near Maymyo, struck the Northern Shan State in eastern Myanmar. Contemporary evaluation of damage distribution and oral accounts led to a correlation between the earthquake and the topographically prominent Kyaukkyan Fault near the western margin of the Shan Plateau, although direct evidence has never been reported. This study aims to find evidence of paleoseismic activity, and to better understand the relationship between the 1912 earthquake and the Kyaukkyan Fault. Paleoseismic trenching along the Kyaukkyan Fault revealed evidence of several surface rupturing events. The northernmost trench exposes at least two visible rupture events since 4660 ± 30 BP: an older rupture stratigraphically constrained by AMS 14C dating to between 4660 ± 30 BP and 1270 ± 30 BP, and a younger rupture formed after 1270 ± 30 BP. The presence of pottery, bricks and cooking-related charcoal in the younger faulted stratigraphy demonstrates Kyaukkyan Fault activity within human times, and a possible correlation between the younger rupture and the 1912 Maymyo earthquake is not excluded. The southern paleoseismic trench, within a broad transtensional basin far from bounding faults, exposes two (undated) surface ruptures. Further study is required to correlate those ruptures to the events dated in the north. These preliminary paleoseismological results constitute the first quantitative evidence of paleoseismic activity along the northern ~170 km of the Kyaukkyan Fault, and support existing evidence that the Kyaukkyan Fault is an active but slow-slipping structure with a long interseismic period.

AB - The Great Burma earthquake (MsGR 8.0; Ms 7.6 - 7.7) occurred on May 23rd, 1912, and was one of the most remarkable early 1900's seismic events in Asia as described by Gutenberg and Richter (1954). The earthquake, focused near Maymyo, struck the Northern Shan State in eastern Myanmar. Contemporary evaluation of damage distribution and oral accounts led to a correlation between the earthquake and the topographically prominent Kyaukkyan Fault near the western margin of the Shan Plateau, although direct evidence has never been reported. This study aims to find evidence of paleoseismic activity, and to better understand the relationship between the 1912 earthquake and the Kyaukkyan Fault. Paleoseismic trenching along the Kyaukkyan Fault revealed evidence of several surface rupturing events. The northernmost trench exposes at least two visible rupture events since 4660 ± 30 BP: an older rupture stratigraphically constrained by AMS 14C dating to between 4660 ± 30 BP and 1270 ± 30 BP, and a younger rupture formed after 1270 ± 30 BP. The presence of pottery, bricks and cooking-related charcoal in the younger faulted stratigraphy demonstrates Kyaukkyan Fault activity within human times, and a possible correlation between the younger rupture and the 1912 Maymyo earthquake is not excluded. The southern paleoseismic trench, within a broad transtensional basin far from bounding faults, exposes two (undated) surface ruptures. Further study is required to correlate those ruptures to the events dated in the north. These preliminary paleoseismological results constitute the first quantitative evidence of paleoseismic activity along the northern ~170 km of the Kyaukkyan Fault, and support existing evidence that the Kyaukkyan Fault is an active but slow-slipping structure with a long interseismic period.

KW - paleoseismology

KW - strike-slip

KW - active tectonics

KW - surface rupture

KW - radiocarbon

KW - calcrete

U2 - 10.1016/j.quaint.2019.09.042

DO - 10.1016/j.quaint.2019.09.042

M3 - Article

VL - 532

SP - 75

EP - 86

JO - Quaternary International

JF - Quaternary International

SN - 1040-6182

ER -