爱德华王子群岛的地表地质:精细的空间数据和对地质保护的呼吁

IF 1.2 4区 地球科学 Q2 GEOLOGY
E. Rudolph, D. Hedding, W. Nel
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引用次数: 3

摘要

亚南极爱德华王子群岛的火山地图于1968年首次出版,马里恩岛的地表地质图于2006年修订。这些地图已广泛用于爱德华王子群岛的陆地研究,但它们在空间精度和细节方面存在局限性。本文利用高分辨率卫星图像和数字高程数据,提供了爱德华王子岛和马里恩岛地表地质的更精确的空间数据。特别是,马里恩岛西海岸的火山学,包括20世纪80年代的熔岩流,以及在大面积冰雪覆盖消失后新暴露的中央高地,都被绘制得更详细,并通过实地观察得到验证。空间数据可作为ESRI层包下载,这有助于未来对岛屿生物-非生物过程和相互作用的调查,并有助于改进空间建模。此外,本文强调了爱德华王子群岛的地质特征和标本,作为南非地质多样性的独特例子。本文就这些地质遗产的价值概述这些特征,以便在《爱德华王子群岛管理计划》中纳入更全面的地质保护策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The surface geology of the Prince Edward Islands: refined spatial data and call for geoconservation
Volcanological maps of the sub-Antarctic Prince Edward Islands were first published in 1968, with a revised surface geology map of Marion Island produced in 2006. These maps have been widely used in terrestrial studies on the Prince Edward Islands but they have limitations in spatial accuracy and detail. Using high-resolution satellite imagery and digital elevation data, more spatially accurate data for both Prince Edward and Marion Island’s surface geology are presented here. In particular, Marion Island’s volcanology on the western coast, including the 1980s lava flow, and the newly exposed Central Highland following the disappearance of extensive ice and snow cover is mapped with greater detail and verified through field observations. The spatial data are downloadable as ESRI layer packages, which can assist in future investigations of island biotic-abiotic processes and interactions and enable improvements in spatial modelling. In addition, this paper highlights geological features and specimens from the Prince Edward Islands as unique examples of geodiversity in a South African context. An overview of these features are provided in terms of their geoheritage value to enable a more comprehensive geoconservation strategy be incorporated into the Prince Edward Islands Management Plan.
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来源期刊
CiteScore
3.60
自引率
5.60%
发文量
18
审稿时长
>12 weeks
期刊介绍: The South African Journal of Geology publishes scientific papers, notes, stratigraphic descriptions and discussions in the broadly defined fields of geoscience that are related directly or indirectly to the geology of Africa. Contributions relevant to former supercontinental entities such as Gondwana and Rodinia are also welcome as are topical studies on any geoscience-related discipline. Review papers are welcome as long as they represent original, new syntheses. Special issues are also encouraged but terms for these must be negotiated with the Editors.
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