hat, basket and bag weaving out of raw materials such as buri and tikog plant were
being produce as a home industry including bamboo craft and rattan craft; it has
contributed to the economic status of the municipality.
Tayasan Geology
Sedimentary rock of tertiary variety, possibly of the Pliocene Age predominates most
part of Negros Oriental. Such is also found at Tayasan. At the coastal belt, coralline
limestone formation is found; and these are prominently seen at Barangay Matuog,
Tamao and some middle barangays.
The coralline limestone is part of the narrow belt that runs from Vallehermoso to
Dumaguete, along the coastal area. A jilted sand stones and gravel are also found at
the coastal area.
At the western side, especially at Pindahan. Tambulan, Bago and Tanlad coralline
limestone are also found; together with clay and loams of recent alluvium which form
most of the agricultural area of the Municipality. Such coralline limestone supports
the archipelagic theory that explain the existence of the Philippine Island.
Running north-west the igneous rocks, and portions, of diorite gabbro intrusive
andesites and basalts extrusive are found. Some Volcanic Miocene deposits, also
abound at the boundary of Negros Occidental, maybe brought by Volcanic eruptions.
Tayasan being within the rim of fire that connects Mt. Canlaon to Mt. Talinis.
The coastal flood plains show sandy soils and gravels, silted by the Tibyawan river
that supplies water to the Municipality. Tayasan also have a few waterfalls and several
springs. It has no mineral deposit of commercial quantity.
Soil Characteristics
A total of 11 out of 17 soil types have been recorded and found in the province are
basically fount at Tayasan. These consists of the undifferentiated type found at the
rough mountainous land, and clay, of the faraon, bolinao, Isabela series. Silica sands
are found at the Poblacion and Cabulotan beach. Clay loam, sandy loam, are also
found in the plain areas of the Municipality.
Soil is no longer that fertile at Tayasan, many are acidic, was beyond the 7.5 Ph. This
was brought about by massive chemical fertilizer application, especially at the sugar
and corn areas at the plain and hilly land. The common culture of plowing the hilly
land, also contributed to denudation and loss of soil fertility.
Geographic location
Geographically, Tayasan is located at 123 degrees 10’ longitude and 9 degrees 30’
latitude and bounded by the North by the Municipality of Jimalalud, on the South by
12
