GEO (1)

THE DIFFERENT ROCK
FORMATIONS IN MINDANAO
Mindanao, known for its diverse and rich natural landscapes, features an array of rock
formations that are both geologically significant and visually captivating. Here are
some notable rock formations found across the island:
MAJOR ROCK FORMATIONS IN MINDANAO

1. Volcanic Rocks
Types: Basalt, Andesite, and Rhyolite
Features: These rocks are the result of various volcanic activities, including lava
flows, pyroclastic deposits, and volcanic domes. Basalt is typically dark and fine-
grained, formed from rapidly cooling lava. Andesite, which is also common on Mt.
Apo, is intermediate in composition and texture.
Mt. Apo is the highest peak in the

Philippines, standing at 2,954 meters
(9,692 feet) above sea level. Located
on the island of Mindanao, it spans
the provinces of Davao del Sur and
North Cotabato. This dormant
stratovolcano is part of the Pacific
Ring of Fire, which includes many of
the world's most active and
dangerous volcanoes.
Mt. Kitanglad is a prominent mountain range

located in the northern part of Mindanao,
within the province of Bukidnon. The range
includes several peaks, with Mt. Dulang-
Dulang being the highest at 2,938 meters
(9,639 feet) above sea level, making it the
second-highest peak in the Philippines after
Mt. Apo. The mountain range is part of the
Kitanglad Mountain Range Natural Park, a
protected area established to conserve its
rich biodiversity and cultural heritage.
PLATE NO.:
NAME: TING, MAHAMED M. MAY 27, 2024
YEAR & SECTION: BSCE B SCORE: 5A
SUBJECT: GEOLOGY FOR CIVIL ENGINEERS
MAJOR ROCK FORMATIONS IN MINDANAO
2. Sedimentary Rocks
Types: The basin primarily consists of sedimentary rock formations, including
sandstones, shales, and conglomerates. These layers were deposited over millions of
years through fluvial (river) and marine processes.
Features: These formations contain significant amounts of organic material,
contributing to the potential for fossil fuel deposits.
The Agusan-Davao Basin is a

significant geological and
hydrological feature in
Mindanao, Philippines. This
expansive sedimentary basin
covers parts of the Agusan and
Davao provinces and is an
important area for both natural
resources and agriculture. The
basin is characterized by
extensive alluvial plains, fertile
soils, and numerous rivers,
including the Agusan River, one
of the longest rivers in the
.
Philippines.
The Eastern Mindanao Ridge is a

prominent geological feature that
runs along the eastern side of
Mindanao, extending from the
northern part of the island down to
its southern regions. It is
characterized by a series of
mountain ranges, highlands, and
fault lines. This ridge is a part of the
broader Philippine Mobile Belt, a
tectonically active zone influenced
by the interaction of the Philippine
Sea Plate and the Eurasian Plate.
NAME: TING, MAHAMED M. PLATE NO.:

MAY 27, 2024
YEAR & SECTION: BSCE B SCORE:
5B
MAJOR ROCK FORMATIONS IN
MINDANAO
3. Metamorphic Rocks
the types and features of metamorphic rocks provides insights into the geological
processes and conditions that shape the Earth's crust over time. These rocks serve as
records of past tectonic events, environmental conditions, and the dynamic nature of the
Earth's interior.
.
The Eastern Mindanao Ridge is a major geological feature in Mindanao,
Philippines, running along the eastern part of the island. This ridge is part
of the Philippine Mobile Belt, a tectonically active zone that includes
several mountain ranges and fault lines. The ridge extends from the
northern to the southern parts of Mindanao and includes some of the
island's most prominent peaks and geological formations.
IMPLICATIONS OF ROCK FORMATIONS

Geological History : The diversity of rock types suggests a complex
geological past driven by volcanic activity. tectonic movements and
sediment deposition
Natural Resources : The presence of these structures suggests the

potential for resources. include minerals, geothermal energy, and
petroleum deposits
Seismic Activity: Due to Mindanao's complicated geological structure,

earthquakes and volcanic eruptions are common there. impacting the
usage of land and readiness for disasters.
PLATE NO.:
5C
ROCK FORMATIONS IN COTABATO CITY
Sedimentary Rock Formation : Predominantly sandstones and shales,
part of the Cotabato Basin.
Alluvial Deposits: Found along river valleys. consisting of

unconsolidated sediments like gravel, sand. and silt.
Volcanic Rocks : Evidence of past volcanic activity can be seen in

certain areas with volcanic tuff and lava flows.
LIMESTONE FORMATIONS IN MINDANAO
Tagoloan Limestones : Found in the northern regions, these

limestones are extensive and used for cement production.
Sultan Kudarat Limestones : Located in southwestern Mindanao,

these are important for both construction
. and agricultural lime.
Cotabato Limestones : Significant deposits found in Cotabato City

and nearby areas, contributing to local industries.
Surigao Limestone : Present in the eastern parts of Mindanao. these

deposits are utilized in various Industrial applications.
Conclusion
The island of Mindanao presents opportunities for the utilization of its abundant
natural resources and provides a window into its geologic history due to the variety of
its rock formations. From volcanic peaks to sedimentary basins and rich limestone
deposits. Knowing these formations is necessary to comprehend Mindanao's geology
and economic potential.
PLATE NO.:
5D

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THE DIFFERENT ROCK

MAJOR ROCK FORMATIONS IN MINDANAO

Mt. Apo is the highest peak in the

Mt. Kitanglad is a prominent mountain range

The Agusan-Davao Basin is a

The Eastern Mindanao Ridge is a

NAME: TING, MAHAMED M. PLATE NO.:

IMPLICATIONS OF ROCK FORMATIONS

Natural Resources : The presence of these structures suggests the

Seismic Activity: Due to Mindanao's complicated geological structure,

Alluvial Deposits: Found along river valleys. consisting of

Volcanic Rocks : Evidence of past volcanic activity can be seen in

LIMESTONE FORMATIONS IN MINDANAO

Tagoloan Limestones : Found in the northern regions, these

Sultan Kudarat Limestones : Located in southwestern Mindanao,

Cotabato Limestones : Significant deposits found in Cotabato City

Surigao Limestone : Present in the eastern parts of Mindanao. these

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