D/H of late Miocene meteoric waters in Western Australia: Paleoenvironmental conditions inferred from the δD of (U-Th)/He-dated CID goethite

Yapp, Crayton J.; Shuster, David L.

doi:10.1016/j.gca.2017.06.036

Cited by 8 publications

(2 citation statements)

References 87 publications

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“…New applications will combine multiple low‐temperature and trapped charge thermochronometry data sets (e.g., King, Herman, & Guralnik, ), as well as leverage other geochemical, geophysical, and geobiological data to tackle new science questions in the societally relevant fields of climate change, planetary geology, geomicrobiology, and sustainable resource development. For example, hematite He, goethite He, and magnetite He dating will be combined with stable isotope geochemistry to reconstruct paleoclimate (e.g., Miller et al, ; Yapp & Shuster, ). This also opens new avenues of soil science research, shedding light on paleoenvironmental and modern climate change.…”

Section: Frontiers In Low‐temperature Thermochronometrymentioning

confidence: 99%

Innovations in (U–Th)/He, Fission Track, and Trapped Charge Thermochronometry with Applications to Earthquakes, Weathering, Surface‐Mantle Connections, and the Growth and Decay of Mountains

2019

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A transformative advance in Earth science is the development of low‐temperature thermochronometry to date Earth surface processes or quantify the thermal evolution of rocks through time. Grand challenges and new directions in low‐temperature thermochronometry involve pushing the boundaries of these techniques to decipher thermal histories operative over seconds to hundreds of millions of years, in recent or deep geologic time and from the perspective of atoms to mountain belts. Here we highlight innovation in bedrock and detrital fission track, (U–Th)/He, and trapped charge thermochronometry, as well as thermal history modeling that enable fresh perspectives on Earth science problems. These developments connect low‐temperature thermochronometry tools with new users across Earth science disciplines to enable transdisciplinary research. Method advances include radiation damage and crystal chemistry influences on fission track and (U–Th)/He systematics, atomistic calculations of He diffusion, measurement protocols and numerical modeling routines in trapped charge systematics, development of 4He/3He and new (U–Th)/He thermochronometers, and multimethod approaches. New applications leverage method developments and include quantifying landscape evolution at variable temporal scales, changes to Earth's surface in deep geologic time and connections to mantle processes, the spectrum of fault processes from paleoearthquakes to slow slip and fluid flow, and paleoclimate and past critical zone evolution. These research avenues have societal implications for modern climate change, groundwater flow paths, mineral resource and petroleum systems science, and earthquake hazards.

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Section: Frontiers In Low‐temperature Thermochronometrymentioning

confidence: 99%

Innovations in (U–Th)/He, Fission Track, and Trapped Charge Thermochronometry with Applications to Earthquakes, Weathering, Surface‐Mantle Connections, and the Growth and Decay of Mountains

2019

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“…These specific conditions can lead to Al or Fe accumulation as kaolinite, Fe-(oxyhydr)oxides (e.g., goethite and hematite-for the sake of simplicity, we will use the term "Fe-oxides" to refer to both Fe-oxides and Fe-oxyhydroxides), or Al-(oxyhydr)oxides (e.g., gibbsite and boehmite) in the weathering profile. A favorable climate (i.e., humid tropical climate) and the absence of tectonic activity contribute to preservation of laterite and bauxite from dismantling for long periods of time, making them potential good records of local past environmental conditions (Tardy and Roquin, 1998;Girard et al, 2000;Vasconcelos et al, 2015;Yapp and Shuster, 2017), and they are useful in investigating the response of weathering processes to climatic variations. However, extracting information on past environmental conditions from duricrust can be complex as secondary minerals may undergo multiple cycles of dissolution/ reprecipitation through time (Vasconcelos et al, 1994;Balan et al, 2005;Monteiro et al, 2014;Guinoiseau et al, 2021), in response to changing physico-chemical conditions and climate (Tardy and Nahon, 1985;Trolard and Tardy, 1989).…”

Section: Introductionmentioning

confidence: 99%

(U-Th)/He Geochronology Constraints on Lateritic Duricrust Formation on the Guiana Shield

et al. 2022

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Thick regoliths developed under tropical climate, namely, laterites, resulting from long-term and pronounced geochemical and mineralogical rearrangement of the parent rock in response to environmental changes. Little information is available on the timing of laterite and bauxite formations, especially on the chronology of the main weathering episodes responsible for lateritic cover formation on the Guiana shield. For this purpose, we focused on both lateritic and bauxitic duricrusts developed over the Paleoproterozoic Greenstone Belt in the Brownsberg, Suriname. The duricrust samples have a relatively simple mineralogy (i.e., goethite, gibbsite, hematite, and kaolinite) but reveal, when observed at a microscopic scale, a complex history of formation with multiple episodes of dissolution/reprecipitation. The (U-Th)/He dating of 179 Fe-oxides subsamples shows that duricrusts sampled at the top of the Brownsberg plateau have ages ranging from <0.8 Ma to ∼19 Ma. In contrast, Fe-oxides extracted from detrital duricrust boulders collected downslope indicate formation ages up to 36 Ma. This age discrepancy may indicate that a main episode of physical erosion affected this region between ca. 30 and 20 Ma. Consistently, the bauxite sampled at the mountaintop indicates a younger phase of formation, with Fe-oxides recementing fragments of a preexisting bauxitic material older than ∼15 Ma. Geochronological data also reveal a long-lasting weathering history until the present day, with multiple generations of Fe-oxides in the bauxite and the duricrusts resulting from successive cycles of dissolution and reprecipitation of Fe-oxides associated with redox cycles. This long-lasting weathering history led to geochemical remobilization and apparent enrichment in some relatively immobile elements, such as REE, aluminum, and vanadium, especially in the duricrust sampled at the mountaintop. Our geochronological, mineralogical, and geochemical study of Fe- and Al-crusts from the Brownsberg mountain provide constraints on the evolution of environmental conditions prevailing since the early Oligocene in Suriname.

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Seeing Red: Some Aspects of the Geological and Climatic History of the Australian Arid Zone

Pillans

2018

On the Ecology of Australia’s Arid Zone

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D/H of late Miocene meteoric waters in Western Australia: Paleoenvironmental conditions inferred from the δD of (U-Th)/He-dated CID goethite

Cited by 8 publications

References 87 publications

Innovations in (U–Th)/He, Fission Track, and Trapped Charge Thermochronometry with Applications to Earthquakes, Weathering, Surface‐Mantle Connections, and the Growth and Decay of Mountains

Innovations in (U–Th)/He, Fission Track, and Trapped Charge Thermochronometry with Applications to Earthquakes, Weathering, Surface‐Mantle Connections, and the Growth and Decay of Mountains

(U-Th)/He Geochronology Constraints on Lateritic Duricrust Formation on the Guiana Shield

Seeing Red: Some Aspects of the Geological and Climatic History of the Australian Arid Zone

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