Existence of the Dharwar–Bastar–Singhbhum (DHABASI) megacraton since 3.35 Ga : constraints from the Precambrian large igneous province record
(2022) In Geological Society Special Publication 518(1). p.173-196- Abstract
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... (More)
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.
(Less)
- author
- Srivastava, Rajesh K. ; Ernst, Richard E. ; Söderlund, Ulf LU ; Samal, Amiya K. ; Pandey, Om Prakash LU and Gautam, Gulab C.
- organization
- publishing date
- 2022
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- Geological Society Special Publication
- series title
- Geological Society Special Publication
- volume
- 518
- issue
- 1
- edition
- 1
- pages
- 24 pages
- publisher
- Geological Society of London
- external identifiers
-
- scopus:85125139353
- ISSN
- 0305-8719
- ISBN
- 978-1-78620-552-0
- DOI
- 10.1144/SP518-2021-53
- language
- English
- LU publication?
- yes
- id
- 062d66ee-7ac6-4c73-a94b-84aa628b76b8
- date added to LUP
- 2022-06-02 10:57:54
- date last changed
- 2022-06-02 10:57:54
@inbook{062d66ee-7ac6-4c73-a94b-84aa628b76b8, abstract = {{<p>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.</p>}}, author = {{Srivastava, Rajesh K. and Ernst, Richard E. and Söderlund, Ulf and Samal, Amiya K. and Pandey, Om Prakash and Gautam, Gulab C.}}, booktitle = {{Geological Society Special Publication}}, isbn = {{978-1-78620-552-0}}, issn = {{0305-8719}}, language = {{eng}}, number = {{1}}, pages = {{173--196}}, publisher = {{Geological Society of London}}, series = {{Geological Society Special Publication}}, title = {{Existence of the Dharwar–Bastar–Singhbhum (DHABASI) megacraton since 3.35 Ga : constraints from the Precambrian large igneous province record}}, url = {{http://dx.doi.org/10.1144/SP518-2021-53}}, doi = {{10.1144/SP518-2021-53}}, volume = {{518}}, year = {{2022}}, }