Peter Mashaka is a full-time English and biology teacher at a primary school in Mfenesini, an area of Stone Town, the capital of Zanzibar.
FAR from the touristy hustle and bustle of New Hope, Pa., Upper Bucks County is a rural area of stone farmhouses, steep hills, dirt roads and small communities scattered along the Delaware River.
Dancing Ledge, a large flat area of stone resembling a ballroom floor and managed by the National Trust, is a favourite destination for walkers, picnickers, geologists, and rock climbers – but not many dancers.
Being of wood, it does not rebound in the manner of a metal head but stays on the chisel, which transmits the blow to the cutting edge and focuses it into a small area of stone to be spalled off.
An interesting observation relates to the presence of lead (Pb), as verified by LIBS, in the white painted area of stone inscription AI378.
By analyzing how many muons are absorbed by a particular area of stone you can work out how dense the rock is.
Based on contact area of stone, the adsorption shows that the lowest level of polymer is related to sandstones in Fig. 10b and for this test it is related to nano-fumed silica.
Confirming this finding, lead (Pb) and chromium (Cr) were detected by LIBS analysis in the same area of stone AI244 but also on the yellow paint of stone relief AI0176 (Fig. 5b), where Raman analysis was not conclusive because of a strong fluorescence emission background.
The open mantapas have seating areas made of stone with the mantapa's parapet wall acting as a back rest.
Our results appear to agree with the larger trends seen throughout the United States where the areas of highest stone prevalence have warm wet climates, and not warm arid, climates.
