What can you say about sink holes in dumanjug?

[cuttyflum]

---

hala naunsa nani ang world ui,a small sink hole with mean a bigger one in d future T T

[junax422208]

Sinkholes can occur in Cebu – MGB7 geologist


There is a big possibility that a sinkhole similar to the one that materialized in Guatemala City will appear even in urban areas in Cebu, a government geologist warned.

The Guatemala City sinkhole caught the attention of people all over the world because of its size, which is reportedly 66 feet across and 100 feet deep.

Al Emil Berador, Chief Geologist of the Mines and Geosciences Bureau (MGB) 7, said sinkholes can appear in Cebu because a large area of the island is composed of limestone.

Berador said sinkholes are natural formations that occur after limestone deposits gradually corrode when in contact with weak carbonic acid, a combination of water and carbon dioxide.

Carbonic acid can gradually corrode hard limestone, which explains why limestone caves are formed, said Berador.

Sinkholes are common where the rock below the land surface is limestone, carbonate rock, salt beds, or rocks that can naturally be dissolved by circulating ground water. As the rock dissolves, spaces and caverns develop underground.

These sinkholes can be dramatic because the surface land usually stays intact until there is no longer enough support. Then the surface area can suddenly collapse.

Berador said majority of areas in Cebu have limestone deposits.

About 60 to 70 percent of Cebu, including areas that are habitable such as urban areas, is composed of limestone, he said.

Berador said a sinkhole can only occur if a corroded limestone area is disturbed by natural tremors such as earthquakes or by human-induced activities.

He said the only way to detect if an area is susceptible to sinkhole formation is through core drilling or ground-penetrating radar.

The geologist also said there have already been sinkhole formations in some areas in Central Visayas.

A few years back, a massive sinkhole formed in Anda town in Bohol after an earthquake hit the area.

Berador said the sinkhole swallowed a couple of houses.

He also said there are sinkholes in Barangay Talamban in Cebu City and Barangay Cabancalan in Mandaue City. Berador said the sinkhole in Cabancalan was found in an area being developed by a private firm.

[elvandesantos]

those arent sinkholes... sink holes FYI are natural occuring. its pretty normal.

[lhorenzoo]

i hope the proper govt. authorities have already checked this one out and made the necessary moves nga way untoward incident
that will happen about this sinkhole...

[geo25]

you can't relax coz it's ONLY SMALL. philvolcs should go to the area and have a thorough survey wether there are homes or establishments who's sitting on a possible sink hole.

maghuwat pa diay ka na naay sinkhole pareho kadako sa SM para naa kay buhaton ??

Sinkholes are not very easy to detect.

[chrisangel]

is it possible na modako ang sinkhole sa Dumanjug like this picture above? hope not

[raissah]

ka ngilo anang picture nimo Chrisangel oi hehe bisan kadaghan na ko kakita ana nga pic kay ngilohan gihapon ko.

[jongkijongk]

mining or 2012 is coming.....

[geo25]

Naa na pud kuno sinkhole sa Dalaguete?

[mitchee]

Naa na pud kuno sinkhole sa Dalaguete?

yep naa .. Sinkhole found in Dalaguete - The Freeman » The Freeman Sections » Cebu News