Wednesday, August 25, 2010

[Geology2] The 1,268 Chocolate Hills of Bohol,Philippines;Geological or Man-Made?

Further information and pictures of the Chocolate Hills (quite impressive):

Chocolate Hills - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/Chocolate_Hills

The Chocolate Hills http://www.bohol.ph/article6.html

Chocolate Hills of Bohol Philippines - World Natural...
http://www.bohol-philippines.com/chocolate-hills.html

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The 1,268 Chocolate Hills of Bohol, Philippines; Geological or Man-Made?
Science, Uncategorized, Unexplained Artifact, s8int.com | Posted by
Chris Parker
Jun052010

Photo:Chocolate Hills. Source
No one really knows how or when the between 1,268 and 1,776 Hershey's
Kisses shaped hills were either formed or constructed near Bohol,
Philippines. The hills range in height between 150 to 450 feet high and
are very regular in shape. The theories have hardened into fact; they
were created through some geological process and are NOT man made.

If you were to do research on the hills you would find that a great deal
of information has simply been copied from one site to another and a
very common sentence is; “you will be very surprised to find out
that the hills are not man-made”.
We're not arguing that they aren't geological; that's what the
experts have done; argue over various proposed geological processes that
whatever they were �" seemingly only ocurred here. What we do note
is
how the experts come in and even though they differ�"they have made
the
official proclamation that they are geological and so now; they ARE
geological. Perhaps they are right but since they don't know WHAT
geological process created them, making definitive statements about
there origin would seem to be premature. This is how science works;
speculation, favored speculation�"incontrovertible fact.

They are cool though and remind us of the The Pyramidal Hills of
Luoping, China (pictured, right) which everyone concedes; are man made,
no?
The Chocolate Hills of Bohol, Philippines;

Wikipedia

“The Chocolate Hills are an unusual geological formation in
Bohol,
Philippines. According to the latest accurate survey done, there are
1,776 hills spread over an area of more than 50 square kilometres (20 sq
mi). They are covered in green grass that turns brown during the dry
season, hence the name.

The Chocolate Hills are a famous tourist attraction of Bohol. They
are featured in the provincial flag and seal to symbolize the abundance
of natural attractions in the province. They are in the Philippine
Tourism Authority's list of tourist destinations in the Philippines;
they have been declared the country's 3rd National Geological Monument
and proposed for inclusion in the UNESCO World Heritage List.

The Chocolate Hills is a rolling terrain of haycock hills �" mounds
of
general shape which are conical and almost symmetrical. Estimated to be
at least 1,268 individual mounds to about 1,776, these cone-shaped or
dome-shaped hills are actually made of grass-covered limestone. The
domes vary in sizes from 30 to 50 metres (98 to 160 ft) high with the
largest being 120 metres (390 ft) in height. They are scattered
throughout the towns of Carmen, Batuan and Sagbayan in Bohol. Bohol's
“main attraction”, these unique mound-shaped hills are
scattered by the
hundreds on the island's central plain, concentrated near the town of
Carmen.

During the dry season, the precipitation is inadequate such that the
grass-covered hills dry up and turn chocolate brown. This transforms the
area into seemingly endless rows of “chocolate kisses”.
The branded confection is the inspiration behind the name, Chocolate
Hills.

Origin

The Chocolate Hills are conical karst hills similar to those seen in the
limestone regions of Slovenia, Croatia, northern Puerto Rico, and Pinar
del Rio Province, Cuba. These hills consist of Late Pliocene to Early
Pleistocene, thin to medium bedded, sandy to rubbly marine
limestones.

These limestones contain the aboundant fossils of shallow marine
foraminifera, coral, mollusks, and algae.The Chocolate Hills consist of
conical karst hills, called mogote, created by a combination of the
dissolution of limestones by rainfall, surface water, and groundwater
and their subaerial erosion by rivers and streams after they had been
uplifted above sea level and fractured by tectonic processes.

These hills are separated by well developed flat plains and contain
numerous caves and springs. The Chocolate Hills are considered to be a
remarkable example of conical karst topography.

The origin for the conical karst of the Chocolate Hills is described
in popular terms on the bronze plaque at the viewing deck in Carmen,
Bohol. This plaque states that they are eroded formations of a type of
marine limestone that sits on top of hardened clay. The plaque reads:
The unique land form known as the Chocolate Hills of Bohol was formed
ages ago by the uplift of coral deposits and the action of rain water
and erosion.

The plaque also makes reference to a fanciful explanation of the
origin of the Chocolate Hills that is unsupported by any published
scientific research, i.e. either Hillmer or Travaglia and others, when
it states::
the grassy hills were once coral reefs that erupted from the sea in a
massive geologic shift. Wind and water put on the finishing touches
over hundreds of thousands of years.”
Chocolate Hills in Bohol

Photographer Salvador Andre notes:
“Most people who first see pictures of this landscape can
hardly believe that these hills are not a man-made artifact. However,
this idea is quickly abandoned, as the effort would surely surpass the
construction of the pyramids in Egypt. ”
Further: “There is no natural formation like them in the world.
From a
distance, they look like half a ball grown out of the ground.The
molehill-shaped and almost uniformly sized hills dot the landscape with
green and brown. “

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