Lista de obras - Axel Hofmann - Dominio Público Uruguay

(Ca-Y)-phosphate inclusions in apatite crystals from Archean rocks from the Barberton Greenstone Belt and Pilbara Craton: First report of natural occurrence

article by Łukasz Birski et al published 1 February 2018 in American Mineralogist

3.2 Ga detrital uraninite in the Witwatersrand Basin, South Africa: Evidence of a reducing Archean atmosphere

article

3.51 Ga old felsic volcanic rocks and carbonaceous cherts from the Gorumahisani Greenstone Belt – Insights into the Palaeoarchaean record of the Singhbhum Craton, India

article by Jaganmoy Jodder et al published June 2021 in Precambrian Research

A Geometallurgical Characterization of the Vaal Reef A-Facies at the Moab Khotsong Mine, Klerksdorp Goldfield, South Africa

artículo científico publicado en 2015

A Mesoarchean shift in uranium isotope systematics

scholarly article

A lithium-isotope perspective on the evolution of carbon and silicon cycles

A paleosol record of the evolution of Cr redox cycling and evidence for an increase in atmospheric oxygen during the Neoproterozoic

artículo científico publicado en 2019

A review of Palaeoarchaean felsic volcanism in the eastern Kaapvaal craton: Linking plutonic and volcanic records

scientific article published in 2018

A review of the current status of the Older Metamorphic Group and Older Metamorphic Tonalite Gneiss: insights into the Palaeoarchaean history of the Singhbhum craton, India

article

A review of the stratigraphy and geological setting of the Palaeoproterozoic Magondi Supergroup, Zimbabwe – Type locality for the Lomagundi carbon isotope excursion

artículo científico

A revised classification scheme of pyrite in the Witwatersrand Basin and application to placer gold deposits

A trace element and Pb isotopic investigation into the provenance and deposition of stromatolitic carbonates, ironstones and associated shales of the ∼3.0 Ga Pongola Supergroup, Kaapvaal Craton

scholarly article

Aerobic iron and manganese cycling in a redox-stratified Mesoarchean epicontinental sea ⬇️

scholarly article

An atmospheric source of S in Mesoarchaean structurally-controlled gold mineralisation of the Barberton Greenstone Belt

Analytical requirements for quantitative X-ray fluorescence nano-imaging of metal traces in solid samples

Anoxic continental surface weathering recorded by the 2.95 Ga Denny Dalton Paleosol (Pongola Supergroup, South Africa)

scholarly article

Archaean Hydrothermal Systems in the Barberton Greenstone Belt and Their Significance as a Habitat for Early Life

Archaean phosphates: a case study of transformation processes in apatite from the Barberton greenstone belt

artículo científico publicado en 2019

Archean spherule layers in the Barberton greenstone belt, South Africa: A discussion of problems related to the impact interpretation

scholarly article

Carbonaceous cherts in the Barberton greenstone belt and their significance for the study of early life in the Archean record

artículo científico publicado en 2007

Carbonate ooids of the Mesoarchaean Pongola Supergroup, South Africa.

artículo científico publicado en 2017

Cellular remains in a ~3.42-billion-year-old subseafloor hydrothermal environment

article by Barbara Cavalazzi et al published July 2021 in Science Advances

Characterization of kerogenous films and taphonomic modes of the Sirius Passet Lagerstätte, Greenland

scholarly article by Timothy P. Topper et al published 15 February 2018 in Geology

Chromium isotope systematics and the diagenesis of marine carbonates

Comparing orthomagmatic and hydrothermal mineralization models for komatiite-hosted nickel deposits in Zimbabwe using multiple-sulfur, iron, and nickel isotope data

scholarly article by Axel Hofmann et al published 28 June 2013 in Mineralium Deposita

Constraining provenance for the uraniferous Paleoproterozoic Francevillian Group sediments (Gabon) with detrital zircon geochronology and geochemistry

Continental setting inferred for emplacement of the 2.9–2.7 Ga Belingwe Greenstone Belt, Zimbabwe: Comment and Reply

scholarly article

Coupled Fe and S isotope variations in pyrite nodules from Archean shale

scholarly article

Coupled silicon–oxygen isotope fractionation traces Archaean silicification

scholarly article

Coupled stable chromium and iron isotopic fractionation tracing magmatic mineral crystallization in Archean komatiite-tholeiite suites

Crystallisation of magmatic topaz and implications for Nb–Ta–W mineralisation in F-rich silicic melts — The Ary-Bulak ongonite massif

Desilication in Archean weathering processes traced by silicon isotopes and Ge/Si ratios

scholarly article

Diagenetic Fe-carbonates in Paleoarchean felsic sedimentary rocks (Hooggenoeg Formation, Barberton greenstone belt, South Africa): Implications for CO2 sequestration and the chemical budget of seawater

scholarly article by Virgile Rouchon et al published August 2009 in Precambrian Research

Diagenetic xenotime age constraints on the Sanjiaotang Formation, Luoyu Group, southern margin of the North China Craton: Implications for regional stratigraphic correlation and early evolution of eukaryotes

article

Differentiating marine vs hydrothermal processes in Devonian carbonatemounds using rare earth elements (Kess Kess mounds, Anti-Atlas, Morocco)

artículo científico publicado en 2015

Discovery of extraterrestrial component carrier phases in Archean spherule layers: Implications for estimation of Archean bolide sizes

scholarly article

Dykes of the 1.11Ga Umkondo LIP, Southern Africa: Clues to a complex plumbing system

Early continental crust generated by reworking of basalts variably silicified by seawater

Evidence for a 3.45-billion-year-old magnetic remanence: Hints of an ancient geodynamo from conglomerates of South Africa

article

Evidence for oxygenic photosynthesis half a billion years before the Great Oxidation Event

article

Evolution of atmospheric xenon and other noble gases inferred from Archean to Paleoproterozoic rocks

scholarly article by Guillaume Avice et al published July 2018 in Geochimica et Cosmochimica Acta

Exceptional preservation of expandable clay minerals in the ca. 2.1Ga black shales of the Francevillian basin, Gabon and its implication for atmospheric oxygen accumulation

scholarly article

Fluid inclusion analysis of silicified Palaeoarchaean oceanic crust – A record of Archaean seawater?

artículo científico publicado en 2015

Generation of early Archaean grey gneisses through melting of older crust in the eastern Kaapvaal craton, southern Africa

article by Alfred Kröner et al published December 2014 in Precambrian Research

Geodynamo, Solar Wind, and Magnetopause 3.4 to 3.45 Billion Years Ago

artículo científico publicado en 2010

Gold accumulation in the Archaean Witwatersrand Basin, South Africa — Evidence from concentrically laminated pyrite

Gold mobility during Palaeoarchaean submarine alteration

scholarly article

Hafnium-Neodymium isotope, trace element and U-Pb zircon age constraints on the petrogenesis of the 3.44–3.46 Ga Dwalile greenstone remnant, Ancient gneiss Complex, Swaziland

scholarly article

High-grade metamorphism of ironstones in the Mesoarchaean of southwest Swaziland

High-temperature metamorphism and crustal melting at ca. 3.2 Ga in the eastern Kaapvaal craton, southern Africa

scholarly article

Hydrothermal clay mineral formation in the uraniferous Paleoproterozoic FA Formation, Francevillian basin, Gabon

Ice-margin fluctuation sequences and grounding zone wedges: The record of the Late Palaeozoic Ice Age in the eastern Karoo Basin (Dwyka Group, South Africa)

scientific article published in 2019

Implications of in situ calcification for photosynthesis in a ~3.3Ga-old microbial biofilm from the Barberton greenstone belt, South Africa

article

Iron Formation: The Sedimentary Product of a Complex Interplay among Mantle, Tectonic, Oceanic, and Biospheric Processes

Iron Formation: The Sedimentary Product of a Complex Interplay among Mantle, Tectonic, Oceanic, and Biospheric Processes--A Reply

Iron Formations: Their Origins and Implications for Ancient Seawater Chemistry

artículo científico publicado en 2014

Iron isotope composition of some Archean and Proterozoic iron formations

article

Isotopic evidence for oxygenated Mesoarchaean shallow oceans

article by Benjamin Eickmann et al published 15 January 2018 in Nature Geoscience

Juvenile crust formation in the Zimbabwe Craton deduced from the O-Hf isotopic record of 3.8–3.1 Ga detrital zircons

artículo científico publicado en 2017

Limited expression of the Paleoproterozoic Oklo natural nuclear reactor phenomenon in the aftermath of a widespread deoxygenation event ~2.11–2.06 billion years ago

scholarly article

Limited oxygen production in the Mesoarchean ocean

artículo científico publicado en 2019

Mesoarchaean acidic volcanic lakes: A critical ecological niche in early land colonisation

scholarly article

Microbial remains in some earliest Earth rocks: Comparison with a potential modern analogue

article

Moderate levels of oxygenation during the late stage of Earth's Great Oxidation Event

artículo científico publicado en 2022

Multiple sulphur and iron isotope composition of detrital pyrite in Archaean sedimentary rocks: A new tool for provenance analysis

article

Nondestructive spectroscopic and petrochemical investigations of Paleoarchean spherule layers from the ICDP drill core BARB5, Barberton Mountain Land, South Africa

scholarly article

Palaeoarchaean felsic magmatism: A melt inclusion study of 3.45 Ga old rhyolites from the Barberton Greenstone Belt, South Africa

artículo científico publicado en 2015

Patient blood management during cardiac surgery: do we have enough evidence for clinical practice?

artículo científico publicado en 2011

Pb- and Nd-isotope systematics of stromatolitic limestones from the 2.7 Ga Ngezi Group of the Belingwe Greenstone Belt: constraints on timing of deposition and provenance

Petrochemical characterization of Neoproterozoic Colomine granitoids, SE Cameroon: Implications for gold mineralization

Petrogenesis of the Neoarchean diorite-granite association in the Wangwushan area, southern North China Craton: Implications for continental crust evolution

Petrographic and Micro-XRF analysis of multiple archean impact-derived spherule layers in drill core CT3 from the northern Barberton Greenstone Belt (South Africa)

scholarly article

Possible discontinuous evolution of atmospheric xenon suggested by Archean barites

Precise U-Pb baddeleyite age dating of the Usushwana Complex, southern Africa – Implications for the Mesoarchaean magmatic and sedimentological evolution of the Pongola Supergroup, Kaapvaal Craton

artículo científico publicado en 2015

Pyrite Zoning as a Record of Mineralization in the Ventersdorp Contact Reef, Witwatersrand Basin, South Africa

Rapid emergence of subaerial landmasses and onset of a modern hydrologic cycle 2.5 billion years ago

artículo científico publicado en 2018

Rare Earth Element and yttrium compositions of Archean and Paleoproterozoic Fe formations revisited: New perspectives on the significance and mechanisms of deposition

article

Reply to the comment by Préat and Weber on Ossa Ossa et al. (2018)

Sedimentology and facies analysis of Mesoarchaean stromatolitic carbonate rocks of the Pongola Supergroup, South Africa

artículo científico

Source composition, fractional crystallization and magma mixing processes in the 3.48–3.43Ga Tsawela tonalite suite (Ancient Gneiss Complex, Swaziland) – Implications for Palaeoarchaean geodynamics

artículo científico publicado en 2016

Stratigraphic changes of Ge/Si, REE+Y and silicon isotopes as insights into the deposition of a Mesoarchaean banded iron formation

artículo científico publicado en 2012

Sulfur record of rising and falling marine oxygen and sulfate levels during the Lomagundi event

artículo científico publicado en 2012

Supracrustal gneisses in southern Swaziland: a basalt-sandstone assemblage of the upper Mozaan Group deformed in the Neoarchaean

scientific article published in 2017

The Late Palaeozoic Ice Age unconformity in southern Namibia viewed as a patchwork mosaic

artículo científico publicado en 2021

The Mesoarchaean Dominion Group and the onset of intracontinental volcanism on the Kaapvaal craton – Geological, geochemical and temporal constraints

scientific article published in 2020

The Nhlangano gneiss dome in south-west Swaziland – A record of crustal destabilization of the eastern Kaapvaal craton in the Neoarchaean

The Paleoproterozoic Francevillian succession of Gabon and the Lomagundi-Jatuli event: COMMENT

scholarly article

The geochemistry of Archaean shales derived from a Mafic volcanic sequence, Belingwe greenstone belt, Zimbabwe: provenance, source area unroofing and submarine versus subaerial weathering

artículo científico publicado en 2003

The geochemistry of sedimentary rocks from the Fig Tree Group, Barberton greenstone belt: Implications for tectonic, hydrothermal and surface processes during mid-Archaean times

scholarly article by Axel Hofmann published December 2005 in Precambrian Research

The onset of oxidative weathering traced by uranium isotopes

Titanium isotopic evidence for felsic crust and plate tectonics 3.5 billion years ago.

artículo científico publicado en 2017

Towards a complete magmatic barcode for the Zimbabwe craton: Baddeleyite U–Pb dating of regional dolerite dyke swarms and sill complexes

artículo científico publicado en 2010

Trace element and stable (C, O) and radiogenic (Sr) isotope geochemistry of stromatolitic carbonate rocks of the Mesoarchaean Pongola Supergroup: Implications for seawater composition

scholarly article

Trace element mapping of pyrite from Archean gold deposits – A comparison between PIXE and EPMA

artículo científico publicado en 2015

Trace element zoning of sulfides and quartz at Sheba and Fairview gold mines: Clues to Mesoarchean mineralisation in the Barberton Greenstone Belt, South Africa

Two-step deoxygenation at the end of the Paleoproterozoic Lomagundi Event

scholarly article

Universal definition of perioperative bleeding in adult cardiac surgery

artículo científico

Unusual manganese enrichment in the Mesoarchean Mozaan Group, Pongola Supergroup, South Africa

artículo científico publicado en 2016

Uranium isotope evidence for Mesoarchean biological oxygen production in shallow marine and continental settings

article by Xiangli Wang et al published December 2020 in Earth and Planetary Science Letters

Zircon SHRIMP dating confirms a Palaeoarchaean supracrustal terrain in the southeastern Kaapvaal Craton, southern Africa

scientific article published in 2012

Lista de obras de Axel Hofmann

(Ca-Y)-phosphate inclusions in apatite crystals from Archean rocks from the Barberton Greenstone Belt and Pilbara Craton: First report of natural occurrence

3.2 Ga detrital uraninite in the Witwatersrand Basin, South Africa: Evidence of a reducing Archean atmosphere

3.51 Ga old felsic volcanic rocks and carbonaceous cherts from the Gorumahisani Greenstone Belt – Insights into the Palaeoarchaean record of the Singhbhum Craton, India

A Geometallurgical Characterization of the Vaal Reef A-Facies at the Moab Khotsong Mine, Klerksdorp Goldfield, South Africa

A Mesoarchean shift in uranium isotope systematics

A lithium-isotope perspective on the evolution of carbon and silicon cycles

A paleosol record of the evolution of Cr redox cycling and evidence for an increase in atmospheric oxygen during the Neoproterozoic

A review of Palaeoarchaean felsic volcanism in the eastern Kaapvaal craton: Linking plutonic and volcanic records

A review of the current status of the Older Metamorphic Group and Older Metamorphic Tonalite Gneiss: insights into the Palaeoarchaean history of the Singhbhum craton, India

A review of the stratigraphy and geological setting of the Palaeoproterozoic Magondi Supergroup, Zimbabwe – Type locality for the Lomagundi carbon isotope excursion

A revised classification scheme of pyrite in the Witwatersrand Basin and application to placer gold deposits

A trace element and Pb isotopic investigation into the provenance and deposition of stromatolitic carbonates, ironstones and associated shales of the ∼3.0 Ga Pongola Supergroup, Kaapvaal Craton

Aerobic iron and manganese cycling in a redox-stratified Mesoarchean epicontinental sea ⬇️

An atmospheric source of S in Mesoarchaean structurally-controlled gold mineralisation of the Barberton Greenstone Belt

Analytical requirements for quantitative X-ray fluorescence nano-imaging of metal traces in solid samples

Anoxic continental surface weathering recorded by the 2.95 Ga Denny Dalton Paleosol (Pongola Supergroup, South Africa)

Archaean Hydrothermal Systems in the Barberton Greenstone Belt and Their Significance as a Habitat for Early Life

Archaean phosphates: a case study of transformation processes in apatite from the Barberton greenstone belt

Archean spherule layers in the Barberton greenstone belt, South Africa: A discussion of problems related to the impact interpretation

Carbonaceous cherts in the Barberton greenstone belt and their significance for the study of early life in the Archean record

Carbonate ooids of the Mesoarchaean Pongola Supergroup, South Africa.

Cellular remains in a ~3.42-billion-year-old subseafloor hydrothermal environment

Characterization of kerogenous films and taphonomic modes of the Sirius Passet Lagerstätte, Greenland

Chromium isotope systematics and the diagenesis of marine carbonates

Comparing orthomagmatic and hydrothermal mineralization models for komatiite-hosted nickel deposits in Zimbabwe using multiple-sulfur, iron, and nickel isotope data

Constraining provenance for the uraniferous Paleoproterozoic Francevillian Group sediments (Gabon) with detrital zircon geochronology and geochemistry

Continental setting inferred for emplacement of the 2.9–2.7 Ga Belingwe Greenstone Belt, Zimbabwe: Comment and Reply

Coupled Fe and S isotope variations in pyrite nodules from Archean shale

Coupled silicon–oxygen isotope fractionation traces Archaean silicification

Coupled stable chromium and iron isotopic fractionation tracing magmatic mineral crystallization in Archean komatiite-tholeiite suites

Crystallisation of magmatic topaz and implications for Nb–Ta–W mineralisation in F-rich silicic melts — The Ary-Bulak ongonite massif

Desilication in Archean weathering processes traced by silicon isotopes and Ge/Si ratios

Diagenetic Fe-carbonates in Paleoarchean felsic sedimentary rocks (Hooggenoeg Formation, Barberton greenstone belt, South Africa): Implications for CO2 sequestration and the chemical budget of seawater

Diagenetic xenotime age constraints on the Sanjiaotang Formation, Luoyu Group, southern margin of the North China Craton: Implications for regional stratigraphic correlation and early evolution of eukaryotes

Differentiating marine vs hydrothermal processes in Devonian carbonatemounds using rare earth elements (Kess Kess mounds, Anti-Atlas, Morocco)

Discovery of extraterrestrial component carrier phases in Archean spherule layers: Implications for estimation of Archean bolide sizes

Dykes of the 1.11Ga Umkondo LIP, Southern Africa: Clues to a complex plumbing system

Early continental crust generated by reworking of basalts variably silicified by seawater

Evidence for a 3.45-billion-year-old magnetic remanence: Hints of an ancient geodynamo from conglomerates of South Africa

Evidence for oxygenic photosynthesis half a billion years before the Great Oxidation Event

Evolution of atmospheric xenon and other noble gases inferred from Archean to Paleoproterozoic rocks

Exceptional preservation of expandable clay minerals in the ca. 2.1Ga black shales of the Francevillian basin, Gabon and its implication for atmospheric oxygen accumulation

Fluid inclusion analysis of silicified Palaeoarchaean oceanic crust – A record of Archaean seawater?

Generation of early Archaean grey gneisses through melting of older crust in the eastern Kaapvaal craton, southern Africa

Geodynamo, Solar Wind, and Magnetopause 3.4 to 3.45 Billion Years Ago

Gold accumulation in the Archaean Witwatersrand Basin, South Africa — Evidence from concentrically laminated pyrite

Gold mobility during Palaeoarchaean submarine alteration

Hafnium-Neodymium isotope, trace element and U-Pb zircon age constraints on the petrogenesis of the 3.44–3.46 Ga Dwalile greenstone remnant, Ancient gneiss Complex, Swaziland

High-grade metamorphism of ironstones in the Mesoarchaean of southwest Swaziland

High-temperature metamorphism and crustal melting at ca. 3.2 Ga in the eastern Kaapvaal craton, southern Africa

Hydrothermal clay mineral formation in the uraniferous Paleoproterozoic FA Formation, Francevillian basin, Gabon

Ice-margin fluctuation sequences and grounding zone wedges: The record of the Late Palaeozoic Ice Age in the eastern Karoo Basin (Dwyka Group, South Africa)

Implications of in situ calcification for photosynthesis in a ~3.3Ga-old microbial biofilm from the Barberton greenstone belt, South Africa

Iron Formation: The Sedimentary Product of a Complex Interplay among Mantle, Tectonic, Oceanic, and Biospheric Processes

Iron Formation: The Sedimentary Product of a Complex Interplay among Mantle, Tectonic, Oceanic, and Biospheric Processes--A Reply

Iron Formations: Their Origins and Implications for Ancient Seawater Chemistry

Iron isotope composition of some Archean and Proterozoic iron formations

Isotopic evidence for oxygenated Mesoarchaean shallow oceans

Juvenile crust formation in the Zimbabwe Craton deduced from the O-Hf isotopic record of 3.8–3.1 Ga detrital zircons

Limited expression of the Paleoproterozoic Oklo natural nuclear reactor phenomenon in the aftermath of a widespread deoxygenation event ~2.11–2.06 billion years ago

Limited oxygen production in the Mesoarchean ocean

Mesoarchaean acidic volcanic lakes: A critical ecological niche in early land colonisation

Microbial remains in some earliest Earth rocks: Comparison with a potential modern analogue

Moderate levels of oxygenation during the late stage of Earth's Great Oxidation Event

Multiple sulphur and iron isotope composition of detrital pyrite in Archaean sedimentary rocks: A new tool for provenance analysis

Nondestructive spectroscopic and petrochemical investigations of Paleoarchean spherule layers from the ICDP drill core BARB5, Barberton Mountain Land, South Africa

Palaeoarchaean felsic magmatism: A melt inclusion study of 3.45 Ga old rhyolites from the Barberton Greenstone Belt, South Africa

Patient blood management during cardiac surgery: do we have enough evidence for clinical practice?

Pb- and Nd-isotope systematics of stromatolitic limestones from the 2.7 Ga Ngezi Group of the Belingwe Greenstone Belt: constraints on timing of deposition and provenance

Petrochemical characterization of Neoproterozoic Colomine granitoids, SE Cameroon: Implications for gold mineralization

Petrogenesis of the Neoarchean diorite-granite association in the Wangwushan area, southern North China Craton: Implications for continental crust evolution

Petrographic and Micro-XRF analysis of multiple archean impact-derived spherule layers in drill core CT3 from the northern Barberton Greenstone Belt (South Africa)

Possible discontinuous evolution of atmospheric xenon suggested by Archean barites

Precise U-Pb baddeleyite age dating of the Usushwana Complex, southern Africa – Implications for the Mesoarchaean magmatic and sedimentological evolution of the Pongola Supergroup, Kaapvaal Craton

Pyrite Zoning as a Record of Mineralization in the Ventersdorp Contact Reef, Witwatersrand Basin, South Africa

Rapid emergence of subaerial landmasses and onset of a modern hydrologic cycle 2.5 billion years ago

Rare Earth Element and yttrium compositions of Archean and Paleoproterozoic Fe formations revisited: New perspectives on the significance and mechanisms of deposition

Reply to the comment by Préat and Weber on Ossa Ossa et al. (2018)

Sedimentology and facies analysis of Mesoarchaean stromatolitic carbonate rocks of the Pongola Supergroup, South Africa

Anoxic continental surface weathering recorded by the 2.95 Ga Denny Dalton Paleosol (Pongola Supergroup, South Africa)

High-temperature metamorphism and crustal melting at ca. 3.2 Ga in the eastern Kaapvaal craton, southern Africa