User:Mikenorton/sandbox/Drakensberg Group

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The Drakensberg Group is a group of lower Jurassic volcanic rocks at the top of the Karoo Supergroup that outcrop in South Africa. They form part of the Karoo-Ferrar large igneous province. The sequence is about 1.65 km thick and consists mainly of basalts, with some silicic lavas, especially near the top of the group. The base of the sequence lies above sandstones of the Clarens Formation, the uppermost part of the Stormberg Group. The lavas of the group were erupted over a short period of a few million years at about 183±1 Mya (million years ago).^[1] They are named for the Drakensberg portion of the Great Escarpment, where the lavas are well exposed.

References

^ Svensen H., Corfu F., Polteau S., Hammer Ø & Planke S. (2012). "Rapid magma emplacement in the Karoo Large Igneous Province" (PDF). Earth and Planetary Science Letters. 325–326. doi:10.1016/j.epsl.2012.01.015.{{cite journal}}: CS1 maint: multiple names: authors list (link)

[Svensen_et_al_2012-1] Svensen H., Corfu F., Polteau S., Hammer Ø & Planke S. (2012). "Rapid magma emplacement in the Karoo Large Igneous Province" (PDF). Earth and Planetary Science Letters. 325–326. doi:10.1016/j.epsl.2012.01.015.{{cite journal}}: CS1 maint: multiple names: authors list (link)

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