Everything about Lopolith totally explained
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. The term was first defined and used by Frank Fitch Grout during the early 1900s in describing the
Duluth gabbro complex in northern
Minnesota and adjacent
Ontario.
Lopoliths typically consist of large
ultramafic to mafic layered intrusions that range in age from
Archean to
Eocene. Examples include the Duluth gabbro, the
Sudbury Igneous Complex of Ontario, the
Bushveld igneous complex of
South Africa, the
Skaergaard complex of Greenland and the Humboldt lopolith of
Nevada. The Sudbury and Bushveld occurrences have been attributed to
impact events and associated crustal melting.
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