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1

Radiometric age determination of tonsteins and stratigraphic constraints for the Lower Permian coal succession in southern Paraná Basin, Brazil

Margot Guerra-Sommer, Miriam Cazzulo-Klepzig, João Orestes Schneider Santos, Léo Afraneo Hartmann, João Marcelo Ketzer, Milton Luis Laquintinie Formoso

Journal:

International Journal of Coal Geology

Year:

2008

Language:

english

File:

PDF, 1.56 MB

english, 2008

2

The Mesoproterozoic Guaporé suture in the SW Amazonian Craton: Geotectonic implications based on field geology, zircon geochronology and Nd–Sr isotope geochemistry

Rizzotto, Gilmar José, Santos, João Orestes S., Hartmann, Léo Afraneo, Tohver, Eric, Pimentel, Márcio Martins, McNaughton, Neal J.

Journal:

Journal of South American Earth Sciences

Year:

2013

Language:

english

File:

PDF, 9.36 MB

english, 2013

3

Sensitive high resolution ion microprobe (SHRIMP) detrital zircon geochronology provides new evidence for a hidden Neoproterozoic foreland basin to the Grenville Orogen in the eastern Midwest, U.S.A.

Schneider Santos, João Orestes, Hartmann, Léo Afraneo, McNaughton, Neal Jesse, Easton, Robert M, Rea, Ron G, Potter, Paul E

Journal:

Canadian Journal of Earth Sciences

Year:

2002

File:

PDF, 792 KB

2002

4

Sm–Nd isotopic investigation of Neoproterozoic and Cretaceous igneous rocks from southern Brazil: A study of magmatic processes

Maria do Carmo P. Gastal, Jean Michel Lafon, Léo Afraneo Hartmann, Edinei Koester

Journal:

Year:

2005

Language:

english

File:

PDF, 901 KB

english, 2005

5

Zircon U-Pb SHRIMP Geochronology of Proterozoic Supercontinents in Southern South America

Léo Afraneo Hartmann

Journal:

Gondwana Research

Year:

2001

Language:

english

File:

PDF, 117 KB

english, 2001

6

A New Understanding of the Provinces of the Amazon Craton Based on Integration of Field Mapping and U-Pb and Sm-Nd Geochronology

João Orestes Schneider Santos, Léo Afraneo Hartmann, Henri Eugene Gaudette, David Ian Groves, Neal Jesse Mcnaughton, Ian Robert Fletcher

Journal:

Gondwana Research

Year:

2000

Language:

english

File:

PDF, 4.70 MB

english, 2000

7

Deepest Exposed Crust Of Brazil-Geochemistry Of Paleoproterozoic Depleted Santa Maria Chico Granulites

Léo Afraneo Hartmann

Journal:

Gondwana Research

Year:

1998

Language:

english

File:

PDF, 1.80 MB

english, 1998

8

The Mesoproterozoic Supercontinent Atlantica in the Brazilian Shield - Review of Geological and U-Pb Zircon and Sm-Nd Isotopic Evidence

Léo Afraneo Hartmann

Journal:

Gondwana Research

Year:

2002

Language:

english

File:

PDF, 820 KB

english, 2002

9

Predominance of high Th/U, magmatic zircon in Brazilian Shield sandstones

Afraneo Hartmann, Léo, Santos, João Orestes S.

Journal:

Year:

2004

Language:

english

File:

PDF, 430 KB

english, 2004

10

Zircon U–Pb geochronology from the Paraná bimodal volcanic province support a brief eruptive cycle at ~ 135 Ma

Viter Magalhães Pinto, Léo Afraneo Hartmann, João Orestes S. Santos, Neal Jesse McNaughton, Wilson Wildner

Journal:

Chemical Geology

Year:

2011

Language:

english

File:

PDF, 1.06 MB

english, 2011

11

Prolonged Paleoproterozoic magmatic participation in the Neoproterozoic Dom Feliciano belt, Santa Catarina, Brazil, based on zircon U–Pb SHRIMP geochronology

Léo Afraneo Hartmann, Maria de Fátima Bitencourt, João Orestes S. Santos, Neal J. McNaughton, Cristiane Butori Rivera, Leandro Betiollo

Journal:

Journal of South American Earth Sciences

Year:

2003

Language:

english

File:

PDF, 1.53 MB

english, 2003

12

Sm–Nd isotopic compositions as a proxy for magmatic processes during the Neoproterozoic of the southern Brazilian shield

Maria do Carmo P. Gastal, Jean Michel Lafon, Léo Afraneo Hartmann, Edinei Koester

Journal:

Journal of South American Earth Sciences

Year:

2005

Language:

english

File:

PDF, 1.56 MB

english, 2005

13

The neoproterozoic Mantiqueira Province and its African connections: a zircon-based U–Pb geochronologic subdivision for the Brasiliano/Pan-African systems of orogens

Luiz Carlos da Silva, Neal J. McNaughton, Richard Armstrong, Léo Afraneo Hartmann, Ian R. Fletcher

Journal:

Precambrian Research

Year:

2005

Language:

english

File:

PDF, 1.42 MB

english, 2005

14

Timing of mafic magmatism in the Tapajós Province (Brazil) and implications for the evolution of the Amazon Craton: evidence from baddeleyite and zircon U–Pb SHRIMP geochronology

João Orestes Schneider Santos, Léo Afraneo Hartmann, Neal Jesse McNaughton, Ian Robert Fletcher

Journal:

Journal of South American Earth Sciences

Year:

2002

Language:

english

File:

PDF, 3.41 MB

english, 2002

15

U-Pb and Sm-Nd geochronology of the neoproterozoic granitic-gneissic Dom Feliciano belt, Southern Brazil

Marly Babinski, Farid Chemale Jr., W.R. Van Schmus, Leo Afrâneo Hartmann, Luiz Carlos Da Silva

Journal:

Journal of South American Earth Sciences

Year:

1997

Language:

english

File:

PDF, 1.44 MB

english, 1997

16

Geological and geochemical evolution of the Trincheira Complex, a Mesoproterozoic ophiolite in the southwestern Amazon craton, Brazil

Rizzotto, Gilmar José, Hartmann, Léo Afraneo

Journal:

Year:

2012

Language:

english

File:

PDF, 4.83 MB

english, 2012

17

Sequential opening and filling of cavities forming vesicles, amygdales and giant amethyst geodes in lavas from the southern Paraná volcanic province, Brazil and Uruguay

Hartmann, Léo Afraneo, da Cunha Duarte, Lauren, Massonne, Hans-Joachim, Michelin, Cassiana, Rosenstengel, Leonardo Manara, Bergmann, Magda, Theye, Thomas, Pertille, Juliana, Arena, Karine Rosa, Duarte

Journal:

International Geology Review

Year:

2012

Language:

english

File:

PDF, 10.41 MB

english, 2012

18

Duration of the Trans-Amazonian Cycle and Its Correlation within South America Based on U-Pb SHRIMP Geochronology of the La Plata Craton, Uruguay

Santos, João Orestes Schneider, Hartmann, Léo Afraneo, Bossi, Jorge, Campal, Néstor, Schipilov, Alejandro, Piñeyro, Daniel, McNaughton, Neal Jesse

Journal:

International Geology Review

Year:

2003

Language:

english

File:

PDF, 4.19 MB

english, 2003

19

Two Paleoproterozoic Orogenies in the Evolution of the Tandilia Belt, Buenos Aires, as Evidenced by Zircon U-Pb SHRIMP Geochronology

Hartmann, Léo Afraneo, Santos, João Orestes S., Cingolani, Carlos A., McNaughton, Neal J.

Journal:

International Geology Review

Year:

2002

Language:

english

File:

PDF, 5.60 MB

english, 2002

20

The Palma Volcano-Sedimentary Supersuite, Precambrian Sul-Riograndense Shield, Brazil

Strieder, Adelir José, Roldão, Débora Grala, Hartmann, Léo Afraneo

Journal:

International Geology Review

Year:

2000

Language:

english

File:

PDF, 3.56 MB

english, 2000

21

Paleoproterozoic Magmatic Provenance of Detrital Zircons, Porongos Complex Quartzites, Southern Brazilian Shield

Hartmann, Léo Afraneo, Philipp, Ruy Paulo, Liu, Dunyi, Wan, Yusheng, Wang, Yangin, Santos, João Orestes S., Vasconcellos, Marcos A. Z.

Journal:

International Geology Review

Year:

2004

Language:

english

File:

PDF, 2.82 MB

english, 2004

22

Detrital Zircon U-Pb Age Data, and Precambrian Provenance of the Paleozoic Guaritas Formation, Southern Brazilian Shield

Hartmann, Léo Afraneo, Schneider, João Orestes, McNaughton, Neal Jesse

Journal:

International Geology Review

Year:

2008

Language:

english

File:

PDF, 1.36 MB

english, 2008

23

SHRIMP U/Pb Zircon Dating of Neoproterozoic Granitic Magmatism and Collision in the Pelotas Batholith, Southernmost Brazil

Da Silva, Luiz Carlos, Hartmann, LÉO Afraneo, Mcnaughton, Neal Jesse, Fletcher, Ian R.

Journal:

International Geology Review

Year:

1999

Language:

english

File:

PDF, 6.84 MB

english, 1999

24

Decoding geochemical and gamma-spectrometric signatures from lavas and sand injectites at the base of the Paraná volcanic province, Novo Hamburgo, Brazil

Hartmann, Léo Afraneo, Baggio, Sérgio Benjamin, Duarte, Sandro Kucera

Journal:

International Geology Review

Year:

2013

Language:

english

File:

PDF, 5.12 MB

english, 2013

25

Epigenetic hydrothermal origin of native copper and supergene enrichment in the Vista Alegre district, Paraná basaltic province, southernmost Brazil

Pinto, Viter Magalhães, Hartmann, Léo Afraneo, Wildner, Wilson

Journal:

International Geology Review

Year:

2011

Language:

english

File:

PDF, 1.35 MB

english, 2011

26

Age, source, and regional stratigraphy of the Roraima Supergroup and Roraima-like outliers in northern South America based on U-Pb geochronology

Santos, João Orestes Schneider, Potter, Paul Edwin, Reis, Nélson Joaquim, Hartmann, Léo Afraneo, Fletcher, Ian Robert, McNaughton, Neal J.

Journal:

Base of the Kiaman Its definition and global stratigraphic significance

Year:

2003

Language:

english

File:

PDF, 3.79 MB

english, 2003

27

Origin of the Ediacaran Porongos Group, Dom Feliciano Belt, southern Brazilian Shield, with emphasis on whole rock and detrital zircon geochemistry andU-Pb, Lu-Hf isotopes

Pertille, Juliana, Hartmann, Léo Afraneo, Philipp, Ruy Paulo, Petry, Thales Sebben, de Carvalho Lana, Cristiano

Journal:

Journal of South American Earth Sciences

Year:

2015

Language:

english

File:

PDF, 5.91 MB

english, 2015

28

Airborne geophysical characterization of geotectonic relationships in the southern Ribeira Belt, Luís Alves Craton, and northern Dom Feliciano Belt, Brazilian Shield

Hartmann, Léo Afraneo, Savian, Jairo Francisco, Lopes, William Ribeiro

Journal:

International Geology Review

Year:

2015

Language:

english

File:

PDF, 5.80 MB

english, 2015

29

Silica gossan as a prospective guide for amethyst geode deposits in the ametista do Sul mining district, Paraná volcanic province, southern Brazil

Baggio, Sérgio Benjamin, Hartmann, Léo Afraneo, Massonne, Hans-Joachim, Theye, Thomas, Antunes, Lucas Machado

Journal:

Journal of Geochemical Exploration

Year:

2015

Language:

english

File:

PDF, 1.16 MB

english, 2015

30

Zircon U-Pb SHRIMP dating of a Neoproterozoic overprint in Paleoproterozoic granitic-gneissic terranes, southern Brazil

da Silva, Luiz Carlos, Hartmann, Léo Afraneo, McNaughton, Neal J., Fletcher, Ian

Journal:

American Mineralogist

Year:

2000

Language:

english

File:

PDF, 2.85 MB

english, 2000

31

Origin of native copper in the Paraná volcanic province, Brazil, integrating Cu stable isotopes in a multi-analytical approach

Baggio, Sérgio Benjamin, Hartmann, Léo Afraneo, Lazarov, Marina, Massonne, Hans-Joachim, Opitz, Joachim, Theye, Thomas, Viefhaus, Tillmann

Journal:

Mineralium Deposita

Year:

2017

Language:

english

File:

PDF, 7.76 MB

english, 2017

32

Chemistry of chromium spinel in high-Mg rocks from the Morungava Intrusion, Cretaceous Paraná Igneous Province, southernmost Brazil

Pinto, Viter Magalhães, Massonne, Hans-Joachim, Wildner, Wilson, Hartmann, Léo Afraneo, Debruyne, David, Theye, Thomas

Journal:

Mineralogy and Petrology

Year:

2019

Language:

english

File:

PDF, 8.89 MB

english, 2019