ORCID Profile
0000-0001-8440-2119
Current Organisations
Institut National Polytechnique de Grenoble
,
Chercheur indépendant
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Publisher: Elsevier BV
Date: 06-2009
Publisher: Elsevier BV
Date: 07-2007
Publisher: Wiley
Date: 2006
DOI: 10.1002/ESP.1329
Publisher: EDP Sciences
Date: 07-2002
DOI: 10.1051/JP4:20020248
Publisher: Informa UK Limited
Date: 19-03-2019
Publisher: Elsevier BV
Date: 06-2004
Publisher: Elsevier BV
Date: 06-2004
Publisher: Wiley
Date: 21-04-2016
DOI: 10.1111/ARCM.12235
Publisher: Informa UK Limited
Date: 03-11-2022
Publisher: Springer Science and Business Media LLC
Date: 09-06-2022
DOI: 10.1186/S40494-022-00706-5
Abstract: Murujuga in Western Australia has the largest concentration of ancient rock engravings (petroglyphs) in the world. However, the Murujuga rock art is potentially threatened by local industrial air pollution, in particular by acid rain, but unambiguous scientific evidence is still missing. Here, we report on results of an accelerated weathering experiment, simulating Murujuga weather and climate conditions that was designed and performed to test whether the expected small changes in chemical, mineralogical, and physical characteristics of the rock surface can be detected and reliably quantified by various analytical means. Locally acquired Murujuga granophyre and gabbro s les with natural varnish were artificially weathered for up to four months in a climate chamber under conditions that simulated 2 years of natural weathering. Mineralogical, chemical, and physical changes were qualitatively monitored by X-ray diffraction and confocal Raman spectroscopy, and quantified by colorimetry, portable X-ray fluorescence spectrometry, and micro-computed tomography. In addition, artificial rainwater that was sprinkled over the rock s les was collected and analysed by inductively-coupled plasma mass spectrometry. The results show significant chemical and physical changes of the surfaces of the rock varnish after 1 month of artificial weathering. The analytical results demonstrate that it is possible to quantitatively monitor small changes caused by the weathering of gabbro and granophyre. Therefore, such a semi-actualistic experimental approach, when carefully designed, potentially allows testing the hypothesis that the weathering rate of the Murujuga petroglyphs is increased by local industrial air pollution. Further experimental work is currently under way.
Publisher: Informa UK Limited
Date: 04-03-2018
Publisher: Informa UK Limited
Date: 12-2011
Publisher: Oxford University Press
Date: 06-07-2017
DOI: 10.1093/OXFORDHB/9780190607357.013.47
Abstract: Whether as engravings, drawings, paintings, stencils, or prints, rock art was made on rock surfaces devoid of protective coating. From the moment of its manufacture, it has therefore been subject to a range of environmental conditions and susceptible to a range of environmental impacts, each of which could have changed through time. In this chapter, the authors discuss the biotic, mechanical, and chemical processes that can affect rock art at its interface with the rock matrix and the atmosphere, together known as taphonomy. Given the complex interplay of age, environment, and processes, understanding alteration mechanisms affecting rock art sites and adequately assessing ways of mitigating deterioration require site-specific investigations and complementary scientific fields.
Publisher: Elsevier BV
Date: 02-2017
Publisher: Geological Society of South Africa
Date: 09-2005
DOI: 10.2113/108.2.297
Location: France
No related grants have been discovered for Stéphane Hoerlé.