Distribution of pumice products in the shell layer on the northern slope of the Ariyoshi Kita shell mound
I created a document on the distribution of pumice products in the shell layer on the northern slope of the Ariyoshi Kita shell mound. It seems that pumice products were always kept with holes drilled through them and tied to clothing with string, and used to polish things. They are distributed in the valley head and downstream.
Distribution of stone products in the shell layer on the northern slope of the Ariyoshi Kita shell mound
I created a document on the distribution of stone products in the shell layer on the northern slope of the Ariyoshi Kita shell mound. The distribution of three stone products determined to be ornamental items originated from dumping (burial) at the head of the valley, which is interesting because it differs from the distribution of shell ornaments.
Ariyoshikita Shell Mound North Slope Shell Layer Stone Plate Distribution
I created a data set on the distribution of stone plates in the shell layer on the north slope of the Ariyoshikita Shell Mound. The distribution of stone plates (all fragments) is clearly different from the distribution of grinding stones, which is interesting. Tools that are inseparable from the lives of the Jomon people show a different distribution pattern when buried.
Distribution of grinding stones in the shell layer on the northern slope of the Ariyoshi Kita shell mound
I created a data set on the distribution of grinding stones in the shell layer on the northern slope of the Ariyoshi Kita shell mound. The distribution of grinding stones peaks near the head of the valley, and is similar to the distribution of scattered human bones. Is this false likeness? The distribution of grinding stones is clearly different from the distribution of chipped stone axes, which are the same stone product.
Distribution of polished stone axes in the shell layer on the northern slope of the Ariyoshi Kita shell mound
I created a document on the distribution of polished stone axes in the shell layer on the northern slope of the Ariyoshi Kita shell mound. Although the number of polished stone axes excavated is smaller than that of chipped stone axes, I confirmed that the distribution is similar.
Distribution of chipped stone axes in the shell layer on the northern slope of the Ariyoshi Kita shell mound
I created a data on the distribution of chipped stone axes in the shell layer on the northern slope of the Ariyoshi Kita shell mound. It is interesting to know where the chipped stone axes were dumped and how they were moved.
Distribution of cuneiform stone tools in the shell layer on the northern slope of the Ariyoshi Kita shell mound
A distribution map of cuneiform stone tools in the shell layer on the northern slope of the Ariyoshi Kita shell mound was created. They are distributed on both the upstream and downstream sides of the shell layer on the northern slope, and the downstream side is an interesting area where many ritual artifacts have been found, leaving a gap.
Distribution of stone drills, scrapers, and irregular stone tools in the shell layer on the northern slope of the Ariyoshi Kita shell mound
A distribution map of stone drills, scrapers, and irregular stone tools excavated from the shell layer on the northern slope of the Ariyoshi Kita shell mound has been created. The scrapers include ones that were not moved much after being dumped.
Distribution of deer jawbones in the shell layer on the north slope of the Ariyoshi Kita shell mound
A distribution map of deer jawbones excavated from the shell layer on the north slope of the Ariyoshi Kita shell mound has been created. Compared to wild boar jawbones, the number of deer jawbones excavated is extremely small. Most are excavated near the head of the gully. The reason for the small number of deer jawbones is that meat is brought in but jawbones are not.
Distribution of arrowheads, blade-like items, spatula-like items, and processed items made from bones, horns, and teeth
I created distribution maps of arrowheads, blade-like items, spatula-like items, and processed items made from bones, horns, and teeth excavated from the shell layer on the northern slope of the Ariyoshi Kita Shell Mound. These distribution maps will be used as material for a comprehensive distribution analysis of artifacts to be conducted in the future.
There was no macroscopic distribution phenomenon that divides the space of the shell layer on the north slope of the Ariyoshi Kita Shell Mound in terms of the average weight of soil weight by grid. However, when viewed microscopically, there are some places where the average weight changes from large to medium to small. It seems that the soil weights were sorted by weight due to the slope flow force.
I visualized the breakage rates by grid using the soil weight list of the shell layer on the north slope of the Ariyoshi Kita Shell Mound published in the excavation report. This revealed a significant difference in the spatial distribution of breakage rates. The breakage rate was high in the upstream area near the head of the gully, and low downstream. The soil weight breakage rate data may be an indicator of the strength of the water flow force.
Distribution of vermilion-painted pottery on the northern slope of the Ariyoshi Kita shell mound
The distribution of vermilion-painted pottery on the northern slope of the Ariyoshi Kita shell mound was grasped using a grid-based 3D bar graph. The distribution characteristics of vermilion-painted pottery and other pottery seem to be different. The disposal principles may be different.
North Slope Shell Layer of Ariyoshi Kita Shell Mound
Distribution of weights of pottery fragment, shell blades, and arrowheads
Creating a map of the distribution of weights of pottery fragment, shell blades, and arrowheads on the north slope shell layer of Ariyoshi Kita Shell Mound clearly expresses the different characteristics of each, making it a very enjoyable learning experience. It was observed that the stone blade dumping sites were limited to two steep slopes.
Distribution of Earliest and Early pottery in the Shell Layer on the North Slope of Ariyoshi Kita Shell Mound
The distribution of earliest and early pottery in the shell layer on the northern slope of the Ariyoshi Kita Shell Mound was determined. The uneven distribution in two places expresses the place of use at that time, and there may have been a wetland or a spring.