Gold systems in the Faina greenstone belt and crustal evolution of the southern Goias Archean Block, central Brazil

Jessica Bogossian

doi:10.26182/5e97db140ec71

Gold systems in the Faina greenstone belt and crustal evolution of the southern Goias Archean Block, central Brazil

Jessica Bogossian

School of Earth and Oceans

Research output: Thesis › Doctoral Thesis

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Abstract

Characterization of the lithostratigraphy, hydrothermal alteration and mineralization in the Cascavel and Sertao deposits provide the first systematic description of gold mineralization in the Faina greenstone belt. The tectono-magmatic framework of this belt is predicted by a regional-scale investigation and results of combined whole-rock g'eochemistry, in-situ zircon U-Pb, Lu-Hf and 0 isotopic measurements of regional intrusive rocks spanning > 2000 Ma constrain the crust-mantle evolution of the southern Goias Archean Block, central Brazil. Coherent geochemical and isotopic constraints imply crustal reservoirs remained fairly constant through time and suggest continental growth by in-situ additions as opposed to accretion of allochthonous terranes.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Hagemann, Steffen, Supervisor Kemp, Tony, Supervisor Lobato, Lydia M., Supervisor, External person
Award date	29 Jan 2020
DOIs	https://doi.org/10.26182/5e97db140ec71
Publication status	Unpublished - 2020

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10.26182/5e97db140ec71

TH20 38 THESIS - DOCTOR OF PHILOSOPHY - BOGOSSIAN, Jessica - 2020
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Cite this

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title = "Gold systems in the Faina greenstone belt and crustal evolution of the southern Goias Archean Block, central Brazil",

abstract = "Characterization of the lithostratigraphy, hydrothermal alteration and mineralization in the Cascavel and Sertao deposits provide the first systematic description of gold mineralization in the Faina greenstone belt. The tectono-magmatic framework of this belt is predicted by a regional-scale investigation and results of combined whole-rock g'eochemistry, in-situ zircon U-Pb, Lu-Hf and 0 isotopic measurements of regional intrusive rocks spanning > 2000 Ma constrain the crust-mantle evolution of the southern Goias Archean Block, central Brazil. Coherent geochemical and isotopic constraints imply crustal reservoirs remained fairly constant through time and suggest continental growth by in-situ additions as opposed to accretion of allochthonous terranes.",

keywords = "Faina greenstone belt, Gold mineralisation, Crustal evolution, Goi{\'a}s Archean Block, Orogenic gold deposits, Cascavel and Sert{\~a}o deposits, in situ U-Pb-Hf-O, Central Brazil",

author = "Jessica Bogossian",

year = "2020",

doi = "10.26182/5e97db140ec71",

language = "English",

school = "The University of Western Australia",

}

TY - BOOK

T1 - Gold systems in the Faina greenstone belt and crustal evolution of the southern Goias Archean Block, central Brazil

AU - Bogossian, Jessica

PY - 2020

Y1 - 2020

N2 - Characterization of the lithostratigraphy, hydrothermal alteration and mineralization in the Cascavel and Sertao deposits provide the first systematic description of gold mineralization in the Faina greenstone belt. The tectono-magmatic framework of this belt is predicted by a regional-scale investigation and results of combined whole-rock g'eochemistry, in-situ zircon U-Pb, Lu-Hf and 0 isotopic measurements of regional intrusive rocks spanning > 2000 Ma constrain the crust-mantle evolution of the southern Goias Archean Block, central Brazil. Coherent geochemical and isotopic constraints imply crustal reservoirs remained fairly constant through time and suggest continental growth by in-situ additions as opposed to accretion of allochthonous terranes.

AB - Characterization of the lithostratigraphy, hydrothermal alteration and mineralization in the Cascavel and Sertao deposits provide the first systematic description of gold mineralization in the Faina greenstone belt. The tectono-magmatic framework of this belt is predicted by a regional-scale investigation and results of combined whole-rock g'eochemistry, in-situ zircon U-Pb, Lu-Hf and 0 isotopic measurements of regional intrusive rocks spanning > 2000 Ma constrain the crust-mantle evolution of the southern Goias Archean Block, central Brazil. Coherent geochemical and isotopic constraints imply crustal reservoirs remained fairly constant through time and suggest continental growth by in-situ additions as opposed to accretion of allochthonous terranes.

KW - Faina greenstone belt

KW - Gold mineralisation

KW - Crustal evolution

KW - Goiás Archean Block

KW - Orogenic gold deposits

KW - Cascavel and Sertão deposits

KW - in situ U-Pb-Hf-O

KW - Central Brazil

U2 - 10.26182/5e97db140ec71

DO - 10.26182/5e97db140ec71

M3 - Doctoral Thesis

ER -

Gold systems in the Faina greenstone belt and crustal evolution of the southern Goias Archean Block, central Brazil

Abstract

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