Digital Object 2308
Description:
UE278. Geological substratum. Alluvium from the lower terrace of the Río Grande. It is visible in large areas of the excavated area because it was originally cut by the northeastern, southeastern and southwestern walls of the main pit (UE 277). It is a massive deposit of alluvium, of the quaternary age, formed by a continuous superposition of thin layers of clays and silts of horizontal tabular distribution that differ from each other in the shade of their coloration, in their granulometry, and in the proportion of sands that they contain. These small differences between strata are a consequence of historical and seasonal fluctuations in the degree of dragging of the river during the transport process. The horizontality of the stratification, on the other hand, corresponds to the net predominance of the processes of lateral erosion over those of excavation of the fluvial bed. As a whole, it is a material of very high plasticity, with a laminar structure, unctuous, of very fine grain and has a soapy texture, which acquires a notable degree of hardness when dried. The veins of clay or silt are between 0,02 m and 0,30 m thick, and their shades vary from light reddish brown to dark green, passing through different shades of orange. The sediment described is completely devoid of cultural intrusions, and the presence of ecofacts has not been observed in it either—apart from the sandy-clay matrix itself—which confirms its condition as a geological substratum that is sterile from an archaeological point of view. Cut by UE277.
Excavation campaign:
2015
Record type:
Stratigraphic unit register
Context-based browsing of El Caño repository
Archaeological site:
El Caño
Operation:
Operation 1
Stratigraphic group:
Tomb 7
Stratigraphic unit type:
Geological substrate
Stratigraphic unit (characteristics):
278
Digital Object 2308