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Location of agate geodes in Permian deposits of Simota gully using the GPR
Acta Geophysica ( IF 2.0 ) Pub Date : 2021-01-19 , DOI: 10.1007/s11600-021-00537-1
Michał Mierczak , Jerzy Karczewski

The article describes the establishment of the location of agate geodes using the GPR method in the area of the Simota gully (Lesser Poland Voivodeship). Agates (a multicolored variety of gemstone of chalcedony group) have multifaceted values that informed their study. Traditional methods of geode location are less reliable, hence the attempt to use the GPR method. Measurements were taken at two study test sites with subsurface geology of weathered melaphyre and pyroclastic deposits using a GPR system (ProEx). A high-frequency antenna (1.6 GHz) was used along with the pre-established profiles of lengths of 6-m and 10-cm intervals. Furthermore, simple soil tests using the soil sampler tool were made prior to the GPR measurement. The GPR results show significant high attenuation of the electromagnetic energy interpreted to be due to clay components of the regolith. Advanced signal processing procedures (such as the attribute of the signal) were used on the data for better enhancement that aided interpretation. Other anomalies depicted on the radargrams were thought to be the presence of roots, pieces of melaphyres-targeted agates. Furtherance to ascertain the reflection coefficients as recorded on the GPR data, in situ samples (root pieces, melaphyres, agates) taken were tested in the laboratory for electric permittivity property. Based on the interpretation results, several agate geodes were dug out from the ground.



中文翻译:

利用GPR在西摩塔沟二叠纪沉积中玛瑙脉的位置。

本文介绍了使用GPR方法在西莫塔沟(Lesser Poland Voivodeship)地区建立玛瑙大地测量仪的位置。Agates(玉髓组宝石的彩色宝石)具有多方面的价值,为他们的研究提供了信息。传统的大地测量方法不太可靠,因此尝试使用GPR方法。使用GPR系统(ProEx)在两个研究测试地点进行了测量,这些测试地点具有风化的黑斑和火山碎屑沉积的地下地质。使用了高频天线(1.6 GHz)以​​及预先建立的长度为6米和10厘米间隔的轮廓。此外,在GPR测量之前,使用土壤采样器工具进行了简单的土壤测试。GPR结果表明,电磁能量显着高衰减,这被认为是由于重碎石的粘土成分所致。数据上使用了高级信号处理程序(例如信号的属性),以更好地增强数据,从而有助于解释。雷达图上描绘的其他异常被认为是存在根部,即针对黑斑的玛瑙碎片。为了确定记录在GPR数据上的反射系数,还对实验室中采集的原位样品(块根,黑斑,玛瑙)进行了介电常数测试。根据解释结果,从地面挖出了几个玛瑙晶莹剔透。数据上使用了高级信号处理程序(例如信号的属性),以更好地增强数据,从而有助于解释。雷达图上描绘的其他异常被认为是存在根部,即针对黑斑的玛瑙碎片。为了确定记录在GPR数据上的反射系数,还对实验室中采集的原位样品(块根,黑斑,玛瑙)进行了介电常数测试。根据解释结果,从地面挖出了几个玛瑙晶莹剔透。数据上使用了高级信号处理程序(例如信号的属性),以更好地增强数据,从而有助于解释。雷达图上描绘的其他异常被认为是存在根部,即针对黑斑的玛瑙碎片。为了确定记录在GPR数据上的反射系数,还对实验室中采集的原位样品(块根,黑斑,玛瑙)进行了介电常数测试。根据解释结果,从地面挖出了几个玛瑙晶莹剔透。在实验室对玛瑙进行了介电常数测试。根据解释结果,从地面挖出了几个玛瑙晶莹剔透。在实验室对玛瑙进行了介电常数测试。根据解释结果,从地面挖出了几个玛瑙晶莹剔透。

更新日期:2021-01-20
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