Table of Contents
- 1 Why does Indonesia have so many islands?
- 2 What explains the formation of Philippine archipelago?
- 3 How the majority of the islands in the Philippines originated?
- 4 How is Indonesian archipelago formed?
- 5 Are the islands that make up the Philippines can be classified as island arcs Why?
- 6 How was the Philippines formed based on geology?
- 7 What plates are involved in the formation of Philippine archipelago?
- 8 How are the islands of Indonesia and Philippines related to each other?
- 9 How are islands formed?
- 10 How was the Philippines formed by subduction?
Why does Indonesia have so many islands?
Indonesia has so many islands it has never been able to fully count or name them. A 1996 law estimated the number of islands in the world’s biggest archipelago at 17,508.
What explains the formation of Philippine archipelago?
Geologically speaking, the Philippine archipelago was formed by volcanic eruptions from under the sea and the buckling of the earth’s crust when two tectonic plates collided about 65 million years ago. Islands were formed and the Philippine archipelago was born.
Is Indonesia made up of thousands of islands?
Indonesia is the largest archipelago in the world. It consists of five major islands and about 30 smaller groups. There are total number of 17,508 islands of which about 6000 are inhabited.
How the majority of the islands in the Philippines originated?
The Philippines did not break out from Pangaea. Rather, the Philippine islands were formed by volcanic eruptions that occurred under the Pacific Ocean over millions of years. Over millions of years and many eruptions, this hardened magma eventually formed the land of the Philippine islands.
How is Indonesian archipelago formed?
Indonesian archipelago was formed due to convergence between Sunda oceanic plate (part of the Eurasian plate) and Indo-Australian plate whereas Philippine archipelago was formed due to convergence between Sunda oceanic plate and Philippine Sea plate. In ocean-ocean convergence, two oceanic plates converge or collide.
How many islands make up the Philippines?
7,100 islands
The Philippines is an archipelago of more than 7,100 islands covering nearly 300,000 square kilometers. It is located between the South China Sea in the west and the Philippine Sea in the east. The two largest islands in the chain, Luzon and Mindanao, comprise about 65 percent of the country’s total landmass.
Are the islands that make up the Philippines can be classified as island arcs Why?
Many of the thousands of islands which make up the Philippines are classified as island arcs which were formed as a result of subduction after the collision of the three plates (the Eurasian Plate, the Philippine Sea Plate, and the Indo-Australian Plate).
How was the Philippines formed based on geology?
Ancient geological history of the Philippine archipelago. As Australia drifted northward and began to collide with Asia, tectonic pressure caused parts of the Pacific seafloor to uplift, producing volcanoes that gave rise to the Philippine islands.
How many islands are in the Philippine archipelago?
7,640 islands
Located in the Pacific Ocean near the equator, the Republic of the Philippines consists of around 7,640 islands — about 2,000 of which are inhabited — that form an archipelago.
What plates are involved in the formation of Philippine archipelago?
The Philippine archipelago is a mature island arc that is at present being accreted to the eastern margin of the Eurasian Plate. It is composed of a complex mixture of terranes (Encarnación, 2004) formed through plate interaction of the Philippine Sea plate, Eurasian Plate and the Indo-Australian Plate (Fig. 4).
The origin of thousands of islands of Indonesia and Philippines archipelagos can be explained on the same line. Ocean-ocean convergence or the Island arc convergence occurs when the oceanic plate is plunged into another oceanic plate away from the continents. As a result of collision, the plate with greater density plunges beneath to form a trench.
How was the archipelago of the Philippines formed?
Formation of the Archipelago. Many of the thousands of islands which make up the Philippines are classified as island arcs which were formed as a result of subduction after the collision of the three plates (the Eurasian Plate, the Philippine Sea Plate, and the Indo-Australian Plate).
How are islands formed?
To understand how the islands were formed, it is important first to know about plate tectonics. Tectonic plates are the divisions of the earth’s crusts which are in constant movement. The movement of these plates is made possible by the churning of magma (molten rock) found beneath the crust.
How was the Philippines formed by subduction?
Many of the thousands of islands which make up the Philippines are classified as island arcs which were formed as a result of subduction after the collision of the three plates (the Eurasian Plate, the Philippine Sea Plate, and the Indo-Australian Plate). The formation of the original island arcs is believed to have occurred millions
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