Prospeccions arqueològiques

Archaeological prospections

Technical visual inspection or survey of the terrain in order to locate, position, delimit or culturally characterise the heritage and archaeological elements present in a specific site or in a larger urban or regional area.

Our prospecting methodology

Prior to any intervention, it will be necessary to carry out the necessary documentary consultations in order to obtain as much information as possible about the sector or the surrounding area. This documentation should be used to determine the likelihood of finding archaeological and cultural heritage remains during the fieldwork. The work itself does not involve any earthworks or alteration of the terrain, as the tasks are based on an ocular inspection of the surface of the site with the aim of locating archaeological materials and/or elements (ceramics, lithics, building materials, burial mounds, etc.).

Methodologically, whenever the terrain permits, paths should be established along a straight line from one end of the property or area to be surveyed to the other. The field of view of the archaeologist following a line of passage is about 5 metres wide. For this reason, in areas of less than one hectare, a surface archaeological survey can be carried out with the presence of a single archaeologist. Beyond one hectare, the area to be surveyed is too large for one archaeologist to adequately survey, and the presence of at least two surveyors is required.

Before prospecting, a digital planimetric base of the area to be surveyed must be available. This base must be georeferenced, as it will be essential for locating the elements found during the survey using a GPS device. This planimetric base must be available during the survey in order to locate the collected materials.

There are other prospecting methods, known as geophysical. These are geological techniques based on the differences between the physical properties of building materials and the surrounding soils, providing a kind of X-ray of buried archaeological remains. There are three methods of geophysical prospection: magnetic prospection, georadar or geoelectric prospection. Each of them detects a specific type of geophysical anomaly that may not coincide with the other techniques, so a good geophysical survey must be combined with surface prospection and sampling.

Archaeological prospections

To centrally manage the requirements that our customers request in preventive matters, we have the Gestiona seal, with which Obralia, a neutral agent, validates that all processes are correct and updated, contributing to a more satisfactory user experience for our customers.

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