Controls on Early Cretaceous desert sediment provenance in south‐west Gondwana, Botucatu Formation (Brazil and Uruguay)

Gabriel Bertolini; Juliana C. Marques; Adrian J. Hartley; Atila A. S. Da‐Rosa; Claiton M. S. Scherer; Miguel A. S. Basei; José C. Frantz

doi:10.1111/sed.12715

Controls on Early Cretaceous desert sediment provenance in south‐west Gondwana, Botucatu Formation (Brazil and Uruguay)

Gabriel Bertolini^*, Juliana C. Marques, Adrian J. Hartley, Atila A. S. Da‐Rosa, Claiton M. S. Scherer, Miguel A. S. Basei, José C. Frantz

^*Corresponding author for this work

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Abstract

The Lower Cretaceous Botucatu Formation records the development of widespread dry–aeolian desert sedimentation throughout the Paraná Basin in south‐west Gondwana. To reconstruct the provenance of the aeolian sediment, petrography, granulometric analysis, U‐Pb detrital zircon ages have been determined from along the southern basin margin in Rio Grande do Sul state (southern Brazil) and Uruguay (Tacuarembó region). The dataset reveals a mean composition Qt89F8L3, comprising very fine to medium‐grained quartozose and feldspatho‐quartzose framework. Heavy mineral analysis reveals an overall dominance of zircon, tourmaline and rutile grains (mean ZTR0.84) with sporadic garnet, epidote and pyrolusite occurrences. The detrital zircon U‐Pb ages are dominated by Cambrian to Neoproterozoic (515 to 650 Ma), Tonian to Stenian (900 to 1250 Ma) and Orosirian to Rhyacian (1.8 to 2.2 Ga) material. The detrital zircon dataset demonstrates a significant lateral variation in sediment provenance: Cambrian to Neoproterozoic detrital zircons dominate in the east, while Tonian to Stenian and Orosirian to Rhyacian ages predominate in the west of the study area. Sandstones are quartz‐rich with dominantly durable zircon, tourmaline and rutile heavy mineral suite, with subtle but statistically significant along‐strike differences in heavy mineral populations and detrital mineralogy which are thought to record local sediment input points into the aeolian system. The similar age spectra of Botucatu desert with proximal Paraná Basin units, the predominance of quartzose, and zircon, tourmaline and rutile components, suggests that recycling is the mechanism responsible for the erg feeding.

Original language	English
Pages (from-to)	2672-2690
Number of pages	19
Journal	Sedimentology
Volume	67
Issue number	5
Early online date	18 Mar 2020
DOIs	https://doi.org/10.1111/sed.12715
Publication status	Published - Aug 2020

Bibliographical note

Acknowledgements
The authors gratefully acknowledge support from Shell Brasil through the ‘BG05: UoA‐UFRGS‐SWB Sedimentary Basins’ project at UFRGS and the strategic importance given by ANP through the R&D levy regulation. The authors would like to thank Renan Guilherme de Souza and Adriano Reis for help in Tacuarembó/Uy Field Trip. This work is part of the current dual‐degree PhD from Gabriel Bertolini at Universidade Federal do Rio Grande do Sul and University of Aberdeen. We thank the editors, and Dr Eduardo Garzanti, Dr Luca Caracciolo and Dr Sebastián Oriolo for their kind and constructive reviews. We thank to Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) by the financial support (Grant: 203786/2017‐3).

Keywords

Botucatu desert
Cretaceous Paraná Basin
desert accumulation
detrital zircon
heavy minerals
provenance analysis
PARANA BASIN
STRATIGRAPHIC EVOLUTION
RUB AL-KHALI
NICO PEREZ TERRANE
DOM FELICIANO BELT
U-PB AGES
LA-PLATA CRATON
Cretaceous Parana Basin
HEAVY-MINERAL ASSEMBLAGES
FLOOD-BASALT VOLCANISM
SOUTHERNMOST BRAZIL

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Bertolini_et_al_Sedimentology_ControlsOnEarlyCretaceous_AAM
This is the peer reviewed version of the following article:Bertolini, G., Marques, J.C., Hartley, A.J., Da‐Rosa, A.A.S., Scherer, C.M.S., Basei, M.A.S. and Frantz, J.C. (2020), Controls on Early Cretaceous desert sediment provenance in south‐west Gondwana, Botucatu Formation (Brazil and Uruguay). Sedimentology, 67: 2672-2690., which has been published in final form at https://doi.org/10.1111/sed.12715. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Accepted author manuscript, 1.6 MBLicence: Unspecified

Cite this

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title = "Controls on Early Cretaceous desert sediment provenance in south‐west Gondwana, Botucatu Formation (Brazil and Uruguay)",

abstract = "The Lower Cretaceous Botucatu Formation records the development of widespread dry–aeolian desert sedimentation throughout the Paran{\'a} Basin in south‐west Gondwana. To reconstruct the provenance of the aeolian sediment, petrography, granulometric analysis, U‐Pb detrital zircon ages have been determined from along the southern basin margin in Rio Grande do Sul state (southern Brazil) and Uruguay (Tacuaremb{\'o} region). The dataset reveals a mean composition Qt89F8L3, comprising very fine to medium‐grained quartozose and feldspatho‐quartzose framework. Heavy mineral analysis reveals an overall dominance of zircon, tourmaline and rutile grains (mean ZTR0.84) with sporadic garnet, epidote and pyrolusite occurrences. The detrital zircon U‐Pb ages are dominated by Cambrian to Neoproterozoic (515 to 650 Ma), Tonian to Stenian (900 to 1250 Ma) and Orosirian to Rhyacian (1.8 to 2.2 Ga) material. The detrital zircon dataset demonstrates a significant lateral variation in sediment provenance: Cambrian to Neoproterozoic detrital zircons dominate in the east, while Tonian to Stenian and Orosirian to Rhyacian ages predominate in the west of the study area. Sandstones are quartz‐rich with dominantly durable zircon, tourmaline and rutile heavy mineral suite, with subtle but statistically significant along‐strike differences in heavy mineral populations and detrital mineralogy which are thought to record local sediment input points into the aeolian system. The similar age spectra of Botucatu desert with proximal Paran{\'a} Basin units, the predominance of quartzose, and zircon, tourmaline and rutile components, suggests that recycling is the mechanism responsible for the erg feeding.",

keywords = "Botucatu desert, Cretaceous Paran{\'a} Basin, desert accumulation, detrital zircon, heavy minerals, provenance analysis, PARANA BASIN, STRATIGRAPHIC EVOLUTION, RUB AL-KHALI, NICO PEREZ TERRANE, DOM FELICIANO BELT, U-PB AGES, LA-PLATA CRATON, Cretaceous Parana Basin, HEAVY-MINERAL ASSEMBLAGES, FLOOD-BASALT VOLCANISM, SOUTHERNMOST BRAZIL",

author = "Gabriel Bertolini and Marques, {Juliana C.} and Hartley, {Adrian J.} and Da‐Rosa, {Atila A. S.} and Scherer, {Claiton M. S.} and Basei, {Miguel A. S.} and Frantz, {Jos{\'e} C.}",

note = "Acknowledgements The authors gratefully acknowledge support from Shell Brasil through the {\textquoteleft}BG05: UoA‐UFRGS‐SWB Sedimentary Basins{\textquoteright} project at UFRGS and the strategic importance given by ANP through the R&D levy regulation. The authors would like to thank Renan Guilherme de Souza and Adriano Reis for help in Tacuaremb{\'o}/Uy Field Trip. This work is part of the current dual‐degree PhD from Gabriel Bertolini at Universidade Federal do Rio Grande do Sul and University of Aberdeen. We thank the editors, and Dr Eduardo Garzanti, Dr Luca Caracciolo and Dr Sebasti{\'a}n Oriolo for their kind and constructive reviews. We thank to Conselho Nacional de Desenvolvimento Cient{\'i}fico e Tecnol{\'o}gico (CNPq) by the financial support (Grant: 203786/2017‐3).",

year = "2020",

month = aug,

doi = "10.1111/sed.12715",

language = "English",

volume = "67",

pages = "2672--2690",

journal = "Sedimentology",

issn = "0037-0746",

publisher = "Wiley-Blackwell",

number = "5",

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TY - JOUR

T1 - Controls on Early Cretaceous desert sediment provenance in south‐west Gondwana, Botucatu Formation (Brazil and Uruguay)

AU - Bertolini, Gabriel

AU - Marques, Juliana C.

AU - Hartley, Adrian J.

AU - Da‐Rosa, Atila A. S.

AU - Scherer, Claiton M. S.

AU - Basei, Miguel A. S.

AU - Frantz, José C.

N1 - Acknowledgements The authors gratefully acknowledge support from Shell Brasil through the ‘BG05: UoA‐UFRGS‐SWB Sedimentary Basins’ project at UFRGS and the strategic importance given by ANP through the R&D levy regulation. The authors would like to thank Renan Guilherme de Souza and Adriano Reis for help in Tacuarembó/Uy Field Trip. This work is part of the current dual‐degree PhD from Gabriel Bertolini at Universidade Federal do Rio Grande do Sul and University of Aberdeen. We thank the editors, and Dr Eduardo Garzanti, Dr Luca Caracciolo and Dr Sebastián Oriolo for their kind and constructive reviews. We thank to Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) by the financial support (Grant: 203786/2017‐3).

PY - 2020/8

Y1 - 2020/8

N2 - The Lower Cretaceous Botucatu Formation records the development of widespread dry–aeolian desert sedimentation throughout the Paraná Basin in south‐west Gondwana. To reconstruct the provenance of the aeolian sediment, petrography, granulometric analysis, U‐Pb detrital zircon ages have been determined from along the southern basin margin in Rio Grande do Sul state (southern Brazil) and Uruguay (Tacuarembó region). The dataset reveals a mean composition Qt89F8L3, comprising very fine to medium‐grained quartozose and feldspatho‐quartzose framework. Heavy mineral analysis reveals an overall dominance of zircon, tourmaline and rutile grains (mean ZTR0.84) with sporadic garnet, epidote and pyrolusite occurrences. The detrital zircon U‐Pb ages are dominated by Cambrian to Neoproterozoic (515 to 650 Ma), Tonian to Stenian (900 to 1250 Ma) and Orosirian to Rhyacian (1.8 to 2.2 Ga) material. The detrital zircon dataset demonstrates a significant lateral variation in sediment provenance: Cambrian to Neoproterozoic detrital zircons dominate in the east, while Tonian to Stenian and Orosirian to Rhyacian ages predominate in the west of the study area. Sandstones are quartz‐rich with dominantly durable zircon, tourmaline and rutile heavy mineral suite, with subtle but statistically significant along‐strike differences in heavy mineral populations and detrital mineralogy which are thought to record local sediment input points into the aeolian system. The similar age spectra of Botucatu desert with proximal Paraná Basin units, the predominance of quartzose, and zircon, tourmaline and rutile components, suggests that recycling is the mechanism responsible for the erg feeding.

AB - The Lower Cretaceous Botucatu Formation records the development of widespread dry–aeolian desert sedimentation throughout the Paraná Basin in south‐west Gondwana. To reconstruct the provenance of the aeolian sediment, petrography, granulometric analysis, U‐Pb detrital zircon ages have been determined from along the southern basin margin in Rio Grande do Sul state (southern Brazil) and Uruguay (Tacuarembó region). The dataset reveals a mean composition Qt89F8L3, comprising very fine to medium‐grained quartozose and feldspatho‐quartzose framework. Heavy mineral analysis reveals an overall dominance of zircon, tourmaline and rutile grains (mean ZTR0.84) with sporadic garnet, epidote and pyrolusite occurrences. The detrital zircon U‐Pb ages are dominated by Cambrian to Neoproterozoic (515 to 650 Ma), Tonian to Stenian (900 to 1250 Ma) and Orosirian to Rhyacian (1.8 to 2.2 Ga) material. The detrital zircon dataset demonstrates a significant lateral variation in sediment provenance: Cambrian to Neoproterozoic detrital zircons dominate in the east, while Tonian to Stenian and Orosirian to Rhyacian ages predominate in the west of the study area. Sandstones are quartz‐rich with dominantly durable zircon, tourmaline and rutile heavy mineral suite, with subtle but statistically significant along‐strike differences in heavy mineral populations and detrital mineralogy which are thought to record local sediment input points into the aeolian system. The similar age spectra of Botucatu desert with proximal Paraná Basin units, the predominance of quartzose, and zircon, tourmaline and rutile components, suggests that recycling is the mechanism responsible for the erg feeding.

KW - Botucatu desert

KW - Cretaceous Paraná Basin

KW - desert accumulation

KW - detrital zircon

KW - heavy minerals

KW - provenance analysis

KW - PARANA BASIN

KW - STRATIGRAPHIC EVOLUTION

KW - RUB AL-KHALI

KW - NICO PEREZ TERRANE

KW - DOM FELICIANO BELT

KW - U-PB AGES

KW - LA-PLATA CRATON

KW - Cretaceous Parana Basin

KW - HEAVY-MINERAL ASSEMBLAGES

KW - FLOOD-BASALT VOLCANISM

KW - SOUTHERNMOST BRAZIL

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U2 - 10.1111/sed.12715

DO - 10.1111/sed.12715

M3 - Article

SN - 0037-0746

VL - 67

SP - 2672

EP - 2690

JO - Sedimentology

JF - Sedimentology

IS - 5

ER -

Controls on Early Cretaceous desert sediment provenance in south‐west Gondwana, Botucatu Formation (Brazil and Uruguay)

Abstract

Bibliographical note

Keywords

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