Geological and Geomechanical Properties of Abraha-Atsibha and Wukro rock-hewn churches and its surroundings, Tigray Region, Northern Ethiopia

IF 0.3 Q4 MULTIDISCIPLINARY SCIENCES Momona Ethiopian Journal of Science Pub Date : 2017-11-30 DOI:10.4314/MEJS.V9I2.4
A. Abay, G. Mebrahtu, B. Konka
{"title":"Geological and Geomechanical Properties of Abraha-Atsibha and Wukro rock-hewn churches and its surroundings, Tigray Region, Northern Ethiopia","authors":"A. Abay, G. Mebrahtu, B. Konka","doi":"10.4314/MEJS.V9I2.4","DOIUrl":null,"url":null,"abstract":"Globally well-known ancient rock-hewn churches are present in Ethiopia in general and particularly in the central and eastern parts of Tigray regional state. They are important sites of heritage and tourism. Most of them are facing destabilization  problem in different degree due to natural and anthropogenic factors. Among the affected, two churches hewn into sandstone located near Abreha-Atsibaha and  Wukro (Kirkos/Cherkos church) in Tigray region were chosen for detailed study in  terms of geological and engineering geological condition of the rocks in to which  they are hewn. Both of them are affected by weathering and seepage. Both are  carved into Mesozoic Adigrat sandstone that occupy higher elevations in  topography, red in color and with iron and silica-rich alternating bands. Petrographic data suggest that the rock is dominated by quartz followed by feldspars; opaque and heavy minerals; pore spaces and carbonate/iron/silica cement. The rock is  characterized by low to medium unconfined compressive strength. The alternating  bands with varying mineralogical composition differ in mechanical properties and are responding differently to weathering and erosion. This is resulting in the  development of minor spalling, pitting etc in the pillars, walls and roofs of the  churches. Keeping the geological condition in view remedial measures are to be planned to minimize deterioration with time. Keywords : Geological, Geomechanical, Rock hewn-Church, Abraha-Atsibaha, Tigray, Ethiopia.","PeriodicalId":18948,"journal":{"name":"Momona Ethiopian Journal of Science","volume":"9 1","pages":"182-199"},"PeriodicalIF":0.3000,"publicationDate":"2017-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4314/MEJS.V9I2.4","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Momona Ethiopian Journal of Science","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4314/MEJS.V9I2.4","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MULTIDISCIPLINARY SCIENCES","Score":null,"Total":0}
引用次数: 0

Abstract

Globally well-known ancient rock-hewn churches are present in Ethiopia in general and particularly in the central and eastern parts of Tigray regional state. They are important sites of heritage and tourism. Most of them are facing destabilization  problem in different degree due to natural and anthropogenic factors. Among the affected, two churches hewn into sandstone located near Abreha-Atsibaha and  Wukro (Kirkos/Cherkos church) in Tigray region were chosen for detailed study in  terms of geological and engineering geological condition of the rocks in to which  they are hewn. Both of them are affected by weathering and seepage. Both are  carved into Mesozoic Adigrat sandstone that occupy higher elevations in  topography, red in color and with iron and silica-rich alternating bands. Petrographic data suggest that the rock is dominated by quartz followed by feldspars; opaque and heavy minerals; pore spaces and carbonate/iron/silica cement. The rock is  characterized by low to medium unconfined compressive strength. The alternating  bands with varying mineralogical composition differ in mechanical properties and are responding differently to weathering and erosion. This is resulting in the  development of minor spalling, pitting etc in the pillars, walls and roofs of the  churches. Keeping the geological condition in view remedial measures are to be planned to minimize deterioration with time. Keywords : Geological, Geomechanical, Rock hewn-Church, Abraha-Atsibaha, Tigray, Ethiopia.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
埃塞俄比亚北部提格雷地区Abraha-Atsibha和Wukro岩凿教堂及其周围的地质和地质力学性质
全球知名的古代岩凿教堂普遍存在于埃塞俄比亚,特别是在提格雷州的中部和东部地区。它们是重要的遗产和旅游景点。由于自然和人为因素的影响,它们大多面临不同程度的不稳定问题。在受影响的教堂中,选择了位于Tigray地区Abreha-Atsibaha和Wukro (Kirkos/Cherkos教堂)附近的两座砂岩教堂,对其所处岩石的地质和工程地质条件进行了详细研究。两者均受风化和渗流的影响。两者都雕刻在中生代亚得喀特砂岩中,该砂岩地势较高,颜色呈红色,具有富含铁和硅的交替带。岩石学资料表明,岩石以石英为主,长石次之;不透明和重矿物;孔隙空间和碳酸盐/铁/硅水泥。岩石的特点是低至中等的无侧限抗压强度。不同矿物组成的交替带具有不同的力学性能,对风化和侵蚀的反应也不同。这导致教堂的柱子、墙壁和屋顶出现轻微的剥落、点蚀等现象。考虑到地质状况,应计划补救措施,以尽量减少随着时间的推移而恶化。关键词:地质,地质力学,岩石切割-教堂,Abraha-Atsibaha, Tigray,埃塞俄比亚
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Momona Ethiopian Journal of Science
Momona Ethiopian Journal of Science MULTIDISCIPLINARY SCIENCES-
自引率
0.00%
发文量
13
审稿时长
12 weeks
期刊最新文献
First occurrence of rudderfish Centrolophus niger (Gmelin, 1789) in the Edremit Bay (Northern Aegean Sea, Türkiye) with the maximum length record for Turkish Seas An Engineering Geological Appraisal of the Leakage Problem in Dora-1 Earthen Dam, Tigray: Implications for its Stability Nano-Zirconia Synthesis Methods and their Pioneering Applications in Dentistry Contribution of Participatory Forest Management Program in Non-Timber Forest Products to balance Livelihood Improvement and Conservation: a case of Sera Forest, Amigna District, Southern Ethiopia Effect of Polymerization Variables on the Electrical Conductivity of Polyaniline Functionalized Cotton Textiles
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1