Lopolith - Wikipedia
A lopolith is a large igneous intrusion which is lenticular in shape with a depressed central region. Lopoliths are generally concordant with the intruded strata with dike or funnel-shaped feeder bodies below the body.
Lopolith | Structure, Formation, Impact | Britannica
lopolith, igneous intrusion associated with a structural basin, with contacts that are parallel to the bedding of the enclosing rocks. In an ideal example, the enclosing sediments above and below the lopolith dip inward from all sides toward the centre, so that the lopolith is concave upward.
Lopolith: Definition and Formation - ScienceQuery
Aug 31, 2023 · 1. What is Lopolith? Lopoliths are produced when the intruded magma pushes down the underlying strata forming a saucer-shaped intrusive igneous rock. 2. What is an example of Lopolith? One example of lopolith is Duluth gabbro in Northern Minnesota. 3. What is the difference between lopolith and phacolith?
Igneous and Volcanic Rock Features - Geology.com
Lopolith. A lopolith is a large, layered igneous intrusion that is distinguished by the convex-downward bowl shape of its floor and whose top can either be flat or convex down.
Plutons: Types of Intrusive Igneous Bodies – Geology In
A lopolith is a large, basin-shaped or lens-shaped intrusive body that is typically concave, where the center dips lower than its edges. It forms when magma intrudes into the crust and spreads laterally, but unlike the upward pushing dome of a laccolith, the weight of the injected magma itself, or the overlying strata, causes it to sag or be ...
Lopolith - SpringerLink
A lopolith is a large, concordant, typically layered, igneous intrusion of planoconvex or lenticular shape that is sunken in its central part because of sagging of the underlying country rock (from the Greek λoπασ a basin or flat earthen dish).
Lopolith – A 100 year-old term. Is it still definitive?
Sep 1, 2018 · The definition of a lopolith as a large planar-convex (downward) intrusion was coined by F.F. Grout one hundred years ago for the proposed shape of the Duluth gabbro.
6.4: Intrusive Igneous Rocks - Geosciences LibreTexts
May 16, 2024 · If a sill forms, but magma pools and sags downward, it creates a lopolith. Pipes A pipe , as the name suggests, is a cylindrical body with a circular, elliptical, or even irregular cross-section, that serves as a conduit (or pipeline) for the movement of magma from one location to …
Bushveld Complex | geological formation, South Africa - Britannica
lopolith. In lopolith …a classic example is the Bushveld Igneous Complex of South Africa, which is composed of both granite and basic rocks. Many other lopoliths are either composite or differentiated. The feeder of a lopolith is assumed to be relatively small and probably is centrally located; it may connect the lopolith with… Read More
4.4 Intrusive Igneous Rocks – Principles of Earth Science
A dike could be horizontal and a sill could be vertical- it all depends on the orientation of features in the surrounding rocks. A laccolith is a sill-like body that has expanded upward by deforming the overlying rock. If a sill forms, but magma pools and sags downward, it creates a lopolith.