Large Igneous Provinces and their Plumbing Systems
Identification of large-volume, short-duration mafic magmatic events of intraplate affinity in both continental and oceanic settings on the Earth and other planets provides invaluable clues for understanding several vital geological issues of current concern. Of particular importance is understanding the assembly and dispersal of supercontinents through Earth's history, dramatic climate change events including mass extinctions, and processes that have produced a wide range of large igneous province (LIP)-related resources, such as Ni–Cu–PGE, Au, U, base metals and petroleum. This volume comprises 21 contributions on the latest developments and new information on LIPs and their plumbing systems and presents methodical studies on different components of LIP plumbing systems. These articles are especially helpful in understanding continental break-up events, regional domal uplift and a variety of metallogenic systems, as well as the temporal and spatial distribution of LIPs, their origin and their likely links to mantle plumes/superplumes.
Existence of the Dharwar–Bastar–Singhbhum (DHABASI) megacraton since 3.35 Ga: constraints from the Precambrian large igneous province record
Published:March 09, 2022
Rajesh K. Srivastava, Richard E. Ernst, Ulf Söderlund, Amiya K. Samal, Om Prakash Pandey, Gulab C. Gautam, 2022. "Existence of the Dharwar–Bastar–Singhbhum (DHABASI) megacraton since 3.35 Ga: constraints from the Precambrian large igneous province record", Large Igneous Provinces and their Plumbing Systems, Rajesh K. Srivastava, Richard E. Ernst, Kenneth L. Buchan, Michiel de Kock
Download citation file:
We propose a Precambrian megacraton (consisting of two or more ancient cratons), DHABASI in the Indian Shield, which includes the Dharwar, Bastar and Singhbhum cratons. This interpretation is mainly based on seven large igneous provinces (LIPs) that are identified in these three cratons over the age range of c. 3.35–1.77 Ga, a period of at least 1.6 Ga. The absence of any subsequent break-up of DHABASI since 1.77 Ga suggests that this megacraton has existed for the past 3.35 Ga. In addition to their use in recognizing this megacraton, these LIP events may also provide likely targets for Cu–Ni–Cr–Co–platinum group element deposits. We suggest that the megacraton DHABASI was an integral part of supercontinents/supercratons through Earth's history, and that it should be utilized as a distinct building block for palaeocontinental reconstructions rather than using the individual Dharwar, Bastar and Singhbhum cratons.