Fiji has a number of volcanoes that are scattered across the countries. While some have not erupted in about 500 years others are still active. Taveuni Island which is the third largest island in Fiji has a huge shield volcano with over 100 cones. Taveuni summit is 4071 feet high. Other volcano mountains in the country include Koro and Nabukelevu. Koro volcano refers to a 1713 feet high, basaltic cinder cone volcano mountain that is situated between Viti Levu and Vanua Levu islands on 16 x 9 km wide Koro Island. Some of the koro volcano cones are probably below 10000 years old. The Koro youngest lava erupted from its cinder cone chain in NNE-SSW-trending, from a flat field of lava normally limited to the central plateau.
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Nabukelevu is an andesitic-dacitic complex lava domes that are located at south western end of Kaduva Island (Begg and Gray 4). The Nabukelevu erupted last at around 1660 and its highest point is 2641 feet. The volcano summit is regarded as Mt. Washington, where presence of flat flows of lave can be seen at Cape Washington located at the North Eastern cost Talauli Bay and on the west coast. The trending NNE faults cut the complex dome of Nabukelevu in various locations, outlining its eastern boundary. Native legends and geological records demonstrate that various eruptions have taken place at Nabukelevu in the past centuries. Ash flows and block deposits demonstrate that there was active growth of the dome in the past few 100 years (Cronin and Neall 417).
Cone Shaped Mountains
a number of cone shaped mountains. They include Mount Uluigalau which is the highest
mountain on the Taveuni Island and the second highest in the Fiji group.
Uluigalay is 4072 feet high. There is also Mount Manuka whih is located at
Vanua Levu and it is 3917 feet high. Other mountains in Fiji include Mount Buke
Levu which is Kadavu Island’s highest mountain with a height of 3800 feet, and Mount
Delaitho that is situated on Gau and it is 242 feet high. There is also Mount
Delaiovalau that is located on Ovalau and it is 2053 feet and Mount Manuka that
is situated on Vanua Levu and it is 3917 feet high (Miller 1).
Different Islands in Fiji
are over 300 islands in Fiji. Some of these islands include Pacific Harbor
Island, Wakaya Island, The Coral Coast Island, the Mamanuca Island Group,
Taveuni Island and the Yasawa Island group among others (Neall and Trewick
3295). Among all these islands, biggest
of all is Vita Levu which is comprises of denarau, Coral Coast and Pacific
Harbor among other surrounding islands. The Vita Levu Island measures 4042
square miles, where about 70% of the Fiji residents reside. The second largest
island in Fiji is Vanua Levu which measures 2160 square miles and where the
second largest number of people in Fiji resides. These islands act as the
habitat for various unique plants and animals’ species, which are only found in
Fiji. Fiji Island acts as the home for the capital city of the country, the
Suva coastal city. The interior of Fiji Island contains dramatic landscapes of
mountain terrain, waterfalls, and tropical forests (Foye 305).
Rocks Found in the Island
The eldest rocks in Fiji are island-circular segment volcanic of Late Eocene age framed by westwards subduction of the Pacific plate underneath the Australian plate along the Vitiaz curv. In addition, Fiji Island is made of volcanoes and thus, the half of the western part of Viti Levu island, is extensively made of intermediate and basic volcanic rocks, arenites and rudites composed of volcano argillites, mudstones and detritus. There are also acid plutonic rocks that have intruded different points of the island especially the south-western parts of the island. In addition, most of the areas in the island have organic rich limestone especially at Cuvu around Sigatoka. Other rocks include peat bogs that stand for the initial stage of formation of coal (Crook 681).
Want to Learn More About Makes Fiji Unique
A. C. Keith. Burial Metamorphic Rocks from Fiji. New Zealand Journal of Geology and Geophysics, vol.6, no.5, 1968, pp.
article analyses rocks found in Fiji especially due volcanic activities. The
article analyses the metamorphism of the rock buried in the island and the kind
of secondary minerals formed in the sediment rocks and tertiary volcanic rocks
especially from the western parts of Viti Levu, Fiji. This article will be used
to expand more on the kinds of rocks found in the island and how they are formed.
Miller, Lauren. “What Landforms Make Fiji Unique?” USA Today, 2018,
article discusses all landforms found in Fiji Island including islands,
mountains, volcanoes, and coral reef. The article discussed the main aspects of
each of the above identified landform and the most unique features that make
the landform distinguishable from others in the world. This article will be
used to add more information on different geological features found in Fiji
Island and noting some of their unique features that make them distinguishable.
J. Shane and Neall Vincent. Holocene Volcanic Geology, Volcanic Hazard, and
Risk on Taveuni, Fiji. New Zealand
Journal of Geology and Geophysics, vol.44, no.3, 2001, pp. 417-437.
article features Taveuni which is the third-biggest island of the Fuji groups.
The article reviews the physical details of the island into details include
physical features, rocks found in the area and how they were formed, the island
geographical settings and some of the risks that some of the features in the
island pose to people living in the area. This article will play a great role
in informing the research about Taveuni Island and some of other geographic
features in it.
E. Vincent and Trewick A Steven. The Age and Origin of the Pacific Islands: a
Geological Overview. Philos Trans R Soc
Lond B Biol Sci, vol. 363, no.1508, 2008, 3293-3308.
article reviews about the pacific island formation process, Fiji being part of
pacific islands. The article discusses forces that were involved in the
formation of various features in the pacific oceans which made every created
island unique. The article provides rich information on history of pacific
island and forces that were involved in their formation.
Foye G. Wilbur. The Geology of the Fiji
Islands. Proceedings of the National
Academy of Sciences of the United States of America, vol.3, no.4, 1917, pp.
article features different geological features of Fiji Island focusing more on
the largest islands in Fiji. The article features different islands, the rock
found there, volcanoes, and vegetation among other things. This article will be
used to expand knowledge on various geological features found in island in
Graham and Gray R. David. Arc Dynamics and Tectonic History of Fiji Based on
Stress and Kinematic Analysis of Dikes and Faults of the Tavua Volcano, Viti
Levu Island, Fiji. Tectonics, vol.21, no.4, 2002, pp. 1-14.
article features the formation of Fiji Island through tectonic and arc dynamic
movements. The article gives detail information of forces involved in the
formation of Fiji and other oceanic islands and features that resulted from
these forces including faults, dikes, and volcanos in Fiji. This article will
be contribute by adding rich history of Fiji geology and featuring history of
some of geological features that are relevant in tourist attraction today in
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