016

Clay Petrography

Provenience

Stream at edge of town of Santa Marta at Colha on old Northern Highway, from underneath uprooted tree, south side of creek

Soil suite

Estevez Plain

Percentage of shrinkage before firing

.066

Percentage of shrinkage after firing

.066

Munsell color before firing

10YR 5/1

Munsell color after firing

2.5YR 3/6

Aplastic spacing

More than double

Aplastic shape

Subround

Aplastic sorting

Moderate

B-Fabric

Speckled

Aplastics in B-Fabric (below 0.05 mm)

No distinct minerals

Quartz (%)

33

Oxides (%)

1

Chert (%)

Few

Clay (%)

65

Other aplastics

Mudstone

Other aplastics (%)

Few

Additional aplastics

Amorphous concentration feature