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A mantle plume is a proposed mechanism of convection within the Earth's mantle, hypothesized to explain anomalous volcanism. [2] Because the plume head partially melts on reaching shallow depths, a plume is often invoked as the cause of volcanic hotspots, such as Hawaii or Iceland, and large igneous provinces such as the Deccan and Siberian Traps.
Minecraft Dungeons is set in the same fictional world as Minecraft, known as the "Overworld", consisting of rough 3D objects—mainly cubes and fluids, and commonly called "blocks"—representing various materials, and inhabited by both peaceful and hostile mobs. Unlike 'Minecraft', the game features a linear, story-driven campaign, and cutscenes.
Mantle plumes were first proposed by J. Tuzo Wilson in 1963 [4] [non-primary source needed] and further developed by W. Jason Morgan in 1971. A mantle plume is posited to exist where hot rock nucleates [clarification needed] at the core-mantle boundary and rises through the Earth's mantle becoming a diapir in the Earth's crust. [5]
Heroes of the Elemental Chaos is a supplement to the 4th edition of the Dungeons & Dragons role-playing game.This book is one of three source books, along with Manual of the Planes (2008) and The Plane Below: Secrets of the Elemental Chaos (2009), from this era that details the Elemental Chaos from the 4th edition World Axis cosmology.
Komatiites probably form in extremely hot mantle plumes [11] or in Archaean subduction zones. [12] Boninite magmatism is similar to komatiite magmatism but is produced by fluid-fluxed melting above a subduction zone. Boninites with 10–18% MgO tend to have higher large-ion lithophile elements (LILE: Ba, Rb, Sr) than komatiites.
The Manual of the Planes (abbreviated MoP [1]) is a manual for the Dungeons & Dragons role-playing game.This text addresses the planar cosmology of the game universe.. The original book (for use with Advanced Dungeons & Dragons 1st Edition) was published in 1987 by TSR, Inc. [2]
Forest Oracle is an adventure scenario in which the player characters seek the help of a Great Druid to lift a curse on the land known as the Downs. [1] The Downs, a lush valley on the edge of the Greate Olde Woode, are dying. Livestock and crops simply rot and drop to the parched ground.
The basalt samples at Paraná and Etendeka have an age of about 132 Ma, during the Valanginian stage of the Early Cretaceous. [3] Indirectly, the rifting and extension are probably the origin of the Paraná and Etendeka traps and it could be the origin of the Gough and Tristan da Cunha Islands as well, as they are connected by the Walvis Ridge (Gough/Tristan hotspot).