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The Zuytdorp Cliffs extend for about along a rugged, spectacular and little visited segment of the
Western Australia Western Australia (WA) is the westernmost state of Australia. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to the south, the Northern Territory to the north-east, and South Australia to the south-east. Western Aust ...
n
Indian Ocean The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or approximately 20% of the water area of Earth#Surface, Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia (continent), ...
coast. The cliffs extend from just south of the mouth of the Murchison River at Kalbarri, to Pepper Point south of Steep Point. The cliffs are situated in both the
Gascoyne The Gascoyne region is one of the nine regions of Western Australia. It is located in the northwest of Western Australia, and consists of the local government areas of Carnarvon, Exmouth, Shark Bay and Upper Gascoyne. The Gascoyne has about of ...
and
Mid West The Mid West region is one of the nine regions of Western Australia. It is a sparsely populated region extending from the west coast of Western Australia, about north and south of its administrative centre of Geraldton and inland to east of W ...
regions of the state. At the highest point, near Womerangee Hill, the top of the cliffs are above the sea. They are named after , a trading ship of the
Dutch East India Company The United East India Company ( ; VOC ), commonly known as the Dutch East India Company, was a chartered company, chartered trading company and one of the first joint-stock companies in the world. Established on 20 March 1602 by the States Ge ...
that was wrecked against the cliffs in 1712.


Geology

The Zuytdorp Cliffs are composed of
Pleistocene The Pleistocene ( ; referred to colloquially as the ''ice age, Ice Age'') is the geological epoch (geology), epoch that lasted from to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fin ...
aged
limestone Limestone is a type of carbonate rock, carbonate sedimentary rock which is the main source of the material Lime (material), lime. It is composed mostly of the minerals calcite and aragonite, which are different Polymorphism (materials science) ...
, a formation called the
Tamala Limestone Tamala Limestone is the geological name given to the widely occurring eolianite limestone deposits on the western coastline of Western Australia, between Shark Bay in the north and nearly to Albany, Western Australia, Albany in the south. The ...
. This limestone formed by the cementation of ancient
calcareous Calcareous () is an adjective meaning "mostly or partly composed of calcium carbonate", in other words, containing lime (mineral), lime or being chalky. The term is used in a wide variety of Science, scientific disciplines. In zoology ''Calcare ...
sand dunes that accumulated near the coast during episodes of the last
ice age An ice age is a long period of reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers. Earth's climate alternates between ice ages, and g ...
. It has been inferred that the relatively straight edge of the cliffs is due to a major fault line just off shore.Hearty, Paul J & O'Leary, Michael J (1 February 2008). Carbonate eolianites, quartz sands, and Quaternary sea-level cycles, Western Australia: A chronostratigraphic approach.(Report). In Quaternary Geochronology. 3 (1-2), 26(30). summary included the following: ''at the type locality of the Tamala Limestone along the Zuytdorp Cliffs, the upper eolianite-paleosol units are characterized ...
ore Ore is natural rock or sediment that contains one or more valuable minerals, typically including metals, concentrated above background levels, and that is economically viable to mine and process. The grade of ore refers to the concentration ...
y advanced stages of cavernous weathering, pedogenesis, and recrystallization.j''


References


Further reading

* Hocking R.M., van der Graaff W.J.E., Blockley J.G., Butcher B.P. 1982. Ajana, Western Australia, 1:250,000 Geological Map Series, SG50-13, Explanatory Notes, Geological Survey of Western Australia
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{{subject bar , auto=y , portal1=Western Australia , portal2=Geography , portal3=Geology Shark Bay Cliffs of Australia