Sediment-hosted copper deposits are stratabound, that is, they are restricted to a narrow range of layers within a sedimentary sequence but do not necessarily follow sedimentary bedding.
As many you asked, how were the Atlas mountains formed? The Anti-Atlas Mountains of northern Africa and the nearby Atlas mountains were created by the prolonged collision of the African and Eurasian tectonic plates, beginning about 80 million years ago.
Furthermore, what is the formation of the oldest sedimentary rocks in Ethiopia and the Horn? Rocks formed by the East African Orogeny 880 to 550 million years ago make up the oldest geological units in Ethiopia. The orogeny caused the closure of the ancient Mozambique Ocean.
Subsequently, what is the geological history of Africa? After the Precambrian, Africa’s geologic history is characterized by the following events: the formation of fold belts in the Paleozoic Era (about 541 to 252 million years ago) in South Africa (the Cape fold belt), Morocco (the Anti-Atlas belt), and Mauritania (the Mauritanide belt) bordering the older cratons; …
Additionally, what is sediment-hosted? Definition: Sediment-hosted deposits can be divided into two major subtypes. The first subtype is clastic-dominated lead-zinc ores, which are hosted in shale, sandstone, siltstone, or mixed clastic rocks, or occur as carbonate replacement, within a clastic-dominated sedimentary rock sequence.
Where is sediment-hosted copper found?
Sediment-hosted stratiform* copper deposits (hereafter termed stratiform copper deposits) are an important, economically attractive, world-class mineral deposit type, traditionally represented by supergiants such as the Kupferschiefer of north-central Europe and the Copper- belt of Central Africa.
What is separated from the coast by the Atlas Mountains?
The Atlas Mountains (Arabic: جِبَال ٱلْأَطْلَس, romanized: jibāl al-ʾaṭlas /ʒibaːl al atˤlas/) are a mountain range in the Maghreb. It separates the Mediterranean and Atlantic coastlines from the Sahara Desert. It stretches around 2,500 km (1,600 mi) through Morocco, Algeria and Tunisia.
What plate boundary is the Atlas Mountains?
The Atlas mountain chain stretches across North Africa through Algeria, Tunisia, and Morocco. The mountains formed over millions of years, gaining their present-day shape when the African continent collided with the Iberian peninsula, in what is known as a convergent plate boundary.
Does the northern or southern chain of the Atlas Mountains receives more rainfall?
ʿAyn ad-Darāhim in the Kroumirie mountains receives 60 inches (1,524 millimetres) a year; nowhere in the Anti-Atlas Mountains, south of the High Atlas, is the total more than 17 inches a year. In a single massif the slopes with a northern exposure receive more rainfall than those with a southern exposure.
How do sediments become sedimentary rock?
Clastic sedimentary rocks are made up of pieces (clasts) of pre-existing rocks. Pieces of rock are loosened by weathering, then transported to some basin or depression where sediment is trapped. If the sediment is buried deeply, it becomes compacted and cemented, forming sedimentary rock.
How sedimentary rocks are formed step by step?
Sedimentary rocks are the product of 1) weathering of preexisting rocks, 2) transport of the weathering products, 3) deposition of the material, followed by 4) compaction, and 5) cementation of the sediment to form a rock. The latter two steps are called lithification.
Where are sedimentary rocks formed?
Sedimentary rocks are formed on or near the Earth’s surface, in contrast to metamorphic and igneous rocks, which are formed deep within the Earth. The most important geological processes that lead to the creation of sedimentary rocks are erosion, weathering, dissolution, precipitation, and lithification.
What is Africa’s geography?
Africa, the second-largest continent, is bounded by the Mediterranean Sea, the Red Sea, the Indian Ocean, and the Atlantic Ocean. … Africa has eight major physical regions: the Sahara, the Sahel, the Ethiopian Highlands, the savanna, the Swahili Coast, the rain forest, the African Great Lakes, and Southern Africa.
What African country is known as land of the fossils?
South Africa contains some of the oldest archaeological and human-fossil sites in the world. Archaeologists have recovered extensive fossil remains from a series of caves in Gauteng Province.
What is a stratabound sediment-hosted copper deposit and explain how it forms?
Abstract. Sedimentary rock-hosted stratiform copper deposits form by movement of oxidized, copper-bearing fluids across a reduction front that results in the precipitation of copper sulfides.