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Lopolith

Index Lopolith

A lopolith is a large igneous intrusion which is lenticular in shape with a depressed central region. [1]

20 relations: Archean, Bushveld Igneous Complex, Dike (geology), Duluth Complex, Eocene, Great Dyke, Igneous rock, Impact event, Intrusive rock, Laccolith, Layered intrusion, Lens (geology), Minnesota, Nevada, Ontario, Skaergaard intrusion, South Africa, Stratum, Sudbury Igneous Complex, Zimbabwe.

Archean

The Archean Eon (also spelled Archaean or Archæan) is one of the four geologic eons of Earth history, occurring (4 to 2.5 billion years ago).

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Bushveld Igneous Complex

The Bushveld Igneous Complex (BIC) is the largest layered igneous intrusion within the Earth's crust.

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Dike (geology)

A dike or dyke, in geological usage, is a sheet of rock that is formed in a fracture in a pre-existing rock body.

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Duluth Complex

The Duluth Complex, the related Beaver Bay Complex, and the associated North Shore Volcanic Group are rock formations which comprise much of the basement bedrock of the northeastern part of the U.S. state of Minnesota in central North America.

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Eocene

The Eocene Epoch, lasting from, is a major division of the geologic timescale and the second epoch of the Paleogene Period in the Cenozoic Era.

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Great Dyke

The Great Dyke is a linear geological feature that trends nearly north-south through the centre of Zimbabwe passing just to the west of the capital, Harare.

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Igneous rock

Igneous rock (derived from the Latin word ignis meaning fire), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic.

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Impact event

An impact event is a collision between astronomical objects causing measurable effects.

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Intrusive rock

Intrusive rock (also called plutonic rock) is formed when magma crystallizes and solidifies underground to form intrusions, for example plutons, batholiths, dikes, sills, laccoliths, and volcanic necks.

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Laccolith

A laccolith is a sheet intrusion (or concordant pluton) that has been injected between two layers of sedimentary rock.

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Layered intrusion

A layered intrusion is a large sill-like body of igneous rock which exhibits vertical layering or differences in composition and texture.

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Lens (geology)

In geology, a lens or lentil is a body of ore or rock that is thick in the middle and thin at the edges, resembling a convex lens in cross-section.

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Minnesota

Minnesota is a state in the Upper Midwest and northern regions of the United States.

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Nevada

Nevada (see pronunciations) is a state in the Western, Mountain West, and Southwestern regions of the United States of America.

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Ontario

Ontario is one of the 13 provinces and territories of Canada and is located in east-central Canada.

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Skaergaard intrusion

The Skaergaard intrusion is a layered igneous intrusion in the Kangerlussuaq area, East Greenland.

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South Africa

South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa.

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Stratum

In geology and related fields, a stratum (plural: strata) is a layer of sedimentary rock or soil, or igneous rock that were formed at the Earth's surface, with internally consistent characteristics that distinguish it from other layers.

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Sudbury Igneous Complex

The Sudbury Igneous Complex is a 1,844 million year-old impact melt sheet in Greater Sudbury, Northern Ontario, Canada.

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Zimbabwe

Zimbabwe, officially the Republic of Zimbabwe, is a landlocked country located in southern Africa, between the Zambezi and Limpopo Rivers, bordered by South Africa, Botswana, Zambia and Mozambique. The capital and largest city is Harare. A country of roughly million people, Zimbabwe has 16 official languages, with English, Shona, and Ndebele the most commonly used. Since the 11th century, present-day Zimbabwe has been the site of several organised states and kingdoms as well as a major route for migration and trade. The British South Africa Company of Cecil Rhodes first demarcated the present territory during the 1890s; it became the self-governing British colony of Southern Rhodesia in 1923. In 1965, the conservative white minority government unilaterally declared independence as Rhodesia. The state endured international isolation and a 15-year guerrilla war with black nationalist forces; this culminated in a peace agreement that established universal enfranchisement and de jure sovereignty as Zimbabwe in April 1980. Zimbabwe then joined the Commonwealth of Nations, from which it was suspended in 2002 for breaches of international law by its then government and from which it withdrew from in December 2003. It is a member of the United Nations, the Southern African Development Community (SADC), the African Union (AU), and the Common Market for Eastern and Southern Africa (COMESA). It was once known as the "Jewel of Africa" for its prosperity. Robert Mugabe became Prime Minister of Zimbabwe in 1980, when his ZANU-PF party won the elections following the end of white minority rule; he was the President of Zimbabwe from 1987 until his resignation in 2017. Under Mugabe's authoritarian regime, the state security apparatus dominated the country and was responsible for widespread human rights violations. Mugabe maintained the revolutionary socialist rhetoric of the Cold War era, blaming Zimbabwe's economic woes on conspiring Western capitalist countries. Contemporary African political leaders were reluctant to criticise Mugabe, who was burnished by his anti-imperialist credentials, though Archbishop Desmond Tutu called him "a cartoon figure of an archetypal African dictator". The country has been in economic decline since the 1990s, experiencing several crashes and hyperinflation along the way. On 15 November 2017, in the wake of over a year of protests against his government as well as Zimbabwe's rapidly declining economy, Mugabe was placed under house arrest by the country's national army in a coup d'état. On 19 November 2017, ZANU-PF sacked Robert Mugabe as party leader and appointed former Vice President Emmerson Mnangagwa in his place. On 21 November 2017, Mugabe tendered his resignation prior to impeachment proceedings being completed.

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References

[1] https://en.wikipedia.org/wiki/Lopolith

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