Volcanic activity around Taipei, Taiwan: new data and perspectives on the Tatun Volcano Group

IF 4 3区地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY

Geoscience Letters Pub Date : 2024-09-13 DOI:10.1186/s40562-024-00358-2

Su-Chin Chang, Mei-Fei Chu, Jui-Pin Wang, Yu-Ming Lai, Sheng-Rong Song, Sidney R. Hemming, Samuel Wai-Pan Ng, Timothy Dylan Chow

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Abstract

The Tatun Volcano Group (TVG) is located at the northern end of Taiwan, ~ 15 km from the center of Taipei, a metropolitan area of over seven million inhabitants. A volcanic eruption by the TVG of any type or scale could cause catastrophic human and economic impacts. This paper summarizes previous geochemical, geophysical, and geochronological reports and highlights why the widely accepted age model does not comport with the latest observations. This study also reports novel 40Ar/39Ar ages for two andesite samples and one basalt sample from the TVG. A sample collected from Chihsingshan yields a robust 40Ar/39Ar age of 0.081 ± 0.005 Ma. This provides the first direct evidence of TVG volcanic activity after 0.1 Ma. Two samples yield 0.28 ± 0.02 Ma for Tatunshan and 0.159 ± 0.017 Ma for Honglushan. The younger ages refute previously proposed age models for the TVG. Along with new drone photos and LiDAR images, the age data help resolve eruptive history and advance understanding of volcanic hazards and hazard mitigation in Taiwan and surrounding areas.

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台湾台北周边的火山活动：大屯火山群的新数据和新视角

大屯火山群（TVG）位于台湾北端，距台北市中心约 15 公里，台北市是一个拥有 700 多万居民的大都会区。任何类型或规模的大屯火山群火山爆发都可能对人类和经济造成灾难性影响。本文总结了之前的地球化学、地球物理和地质年代报告，并强调了为什么广泛接受的年龄模型与最新观测结果不符。本研究还报告了来自 TVG 的两个安山岩样本和一个玄武岩样本的新 40Ar/39Ar 年龄。从赤兴山采集的一个样本得到了可靠的 40Ar/39Ar 年龄，即 0.081 ± 0.005 Ma。这首次提供了 TVG 火山活动在 0.1 Ma 之后的直接证据。在两个样品中，大屯山的年龄为 0.28 ± 0.02 Ma，红芦山的年龄为 0.159 ± 0.017 Ma。较年轻的年龄驳斥了之前提出的 TVG 年龄模型。这些年龄数据与新的无人机照片和激光雷达图像一起，有助于解析火山爆发历史，加深对台湾及周边地区火山灾害和减灾的了解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Geoscience Letters Earth and Planetary Sciences-General Earth and Planetary Sciences

CiteScore

4.90

自引率

2.50%

发文量

审稿时长

25 weeks

期刊介绍： Geoscience Letters is the official journal of the Asia Oceania Geosciences Society, and a fully open access journal published under the SpringerOpen brand. The journal publishes original, innovative and timely research letter articles and concise reviews on studies of the Earth and its environment, the planetary and space sciences. Contributions reflect the eight scientific sections of the AOGS: Atmospheric Sciences, Biogeosciences, Hydrological Sciences, Interdisciplinary Geosciences, Ocean Sciences, Planetary Sciences, Solar and Terrestrial Sciences, and Solid Earth Sciences. Geoscience Letters focuses on cutting-edge fundamental and applied research in the broad field of the geosciences, including the applications of geoscience research to societal problems. This journal is Open Access, providing rapid electronic publication of high-quality, peer-reviewed scientific contributions.