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Krátce o regionální geologii Indonésie - angl.

22.04.2006
Geologie
Krátce o regionální geologii Indonésie - angl.

WESTERN INDONESIA
Sumatra
Natuna
Java
Java Sea
Kalimantan

CENTRAL INDONESIA
Makassar Strait
Sulawesi
The lesser Sunda Islands
Halmahera

EASTERN INDONESIA
Papua
Banda Arc
Aru Sea
Timor Island
Timor Sea

Regional Geology of Indonesia

Indonesia is the largest archipelagic state in the world comprising five major islands and about 300 smaller island
groups. Altogether there are 13,667 islands and islets of which about 6,000 inhabited. The archipelago is situated
on a crossroad between two oceans, the Pacific and Indian oceans, and bridges two continents, the Asian and
Australian. Indonesia has a total area of 9,8 million sq km, of which more than 7,9 million sq km under water.
Physiographically, the islands of Sumatra, Java and Kalimantan are attached to the Sunda Shelf of the Asian continent.
On this landmass the water depth does not exceed 200 meters. To the east, Irian Jaya and the Aru islands lie on the
Sahul Shelf, which are parts of the Australian continent. Located between these two shelfal is the island grop of Nusa
Tenggara, Sulawesi, Maluku and Halmahera. These islands are encircled by deep seas which in many places reach
5,000 meters.
About 60 Tertiary sedimentary basins, spread out from Sumatra in the west to Irian Jaya in the east, are identified in
Indonesia. So far only 38 basins have been explored and drilled for petroleum and 14 of the are now producing oil
and gas. Seventy three percent of these basins are located offshore, about one third of them in the deeper sea, with
water depth exceeding 200 m.

ZDROJ:www.geocities.com

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