Page 222 - THE MELANESIA DIASPORA FILE CETAK ISI 10022017

The influence of geological conditions on the migration of modern people passing through Indonesia.

These flood-lands are composed of river sediments whose main settling mechanism is
flooding. The line which limits the islands of the Sunda Exposure and the islands on the
East. This line separated the migration of modern people before developing the capability
of crossing the ocean.
Indonesia has both a strong pulling and pushing power. The natural richness and
diversity of natural resources will attract people to migrate there. Disasters have the
opposite effect. The migration of the earliest arrivals in the area spread eastward until it
reached the barrier of deep water which separates the Asian and Australian areas. This is
known as the Wallace line, an ecosystem border separating the eastern and western parts
of Indonesia. The geologies of east and west are different, and are separated by ocean of
at least 200 meters. The early migrations of people after the glacial period (< 20,000 years)
were stopped by this border. It was only later when the people had seafaring abilities that
they were able to cross this sea and proceed to disperse eastward.

Archeological Evidence
Kedulan Temple: Exploring the Geohazard Potentials of Jogjakarta and surroundings.

222 Chapter 5

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