Cosmogenic 21Ne exposure dating of young basaltic lava flows from the Newer Volcanic Province, western Victoria, Australia

Gillen, David; Honda, Masahiko; Chivas, Allan R.; Yatsevich, Igor; Patterson, Desmond B; Carr, Paul F.

doi:10.1016/j.quageo.2009.08.004

Cited by 23 publications

(14 citation statements)

References 44 publications

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“…Currently, the majority of available geochronological data in the NVP were either derived by K‐Ar dating (N = 147) [e.g., Aziz‐ur‐Rahman and McDougall , ; Gray and McDougall , ; McDougall et al ., ; Singleton et al ., ] and a few cosmogenic exposure ( 21 Ne and 36 Cl; n = 6) [ Stone et al ., ; Gillen et al ., ] and 40 Ar/ 39 Ar ages (n = 9) [ Hare et al ., ; Matchan and Phillips , ; Matchan et al ., ] (for a review on available geochronology see Vasconcelos et al . []).…”

Section: Introductionsupporting

confidence: 59%

“…Samples VIC06 (Mt Porndon), VIC16 (Harman flow—Mt Napier), and VIC26 (Tyrendarra flow—Mt Eccles) yield 40 Ar/ 39 Ar plateau ages of 116.1 ± 5, 44.4 ± 4.0, and 54 ± 8 ka, respectively, and allow comparison with the cosmogenic 21 Ne [ Gillen et al ., ] and 36 Cl [ Stone et al ., ] exposure ages reported in literature. Exposure ages of 53 ± 5 ka ( 21 Ne) and 58.5 ± 5 ka ( 36 Cl) for Mt Porndon, 37 ± 5 ka ( 21 Ne) and 31.9 ± 2.4 ka ( 36 Cl) for the Harman flow, and 36 ± 3 ka ( 21 Ne) for the Tyrendarra flow show that the cosmogenic ages are systematically younger than the crystallization age.…”

Section: Discussionmentioning

confidence: 99%

“…Samples VIC06, VIC26, VIC27, and VIC28 were taken at the same location—but deeper levels—of the Gillen et al . [] and Stone et al . [] cosmogenic exposure dating sites.…”

Section: Geological Setting and Sample Descriptionmentioning

confidence: 99%

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⁴⁰Ar/³⁹Ar geochronology reveals rapid change from plume‐assisted to stress‐dependent volcanism in the Newer Volcanic Province, SE Australia

Oostingh

Jourdan

Matchan

et al. 2017

Geochem Geophys Geosyst

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Here we present 40Ar/39Ar ages of volcanic features in the Cenozoic intraplate Newer Volcanic Province in southeast Australia. The <5 Ma volcanic products in the Newer Volcanic Province can be subdivided into tholeiitic, valley‐filling Newer Plains basalts, and alkaline scoria cones, lava shields, and maars of the Newer Cones series. Plateau ages range from 3.76 ± 0.01 to 4.32 ± 0.03 Ma (2σ; all sources of uncertainties included) for the Newer Plains series, with production rates of volcanism decreasing post 4 Ma. We suggest that magmatism is related to the complex interplay of magma upwelling due to edge‐driven convection and the Cosgrove track mantle plume located in the northeast of the province at 6.5–5 Ma. Plateau ages range from 1290 ± 20 to 41.1 ± 2.2 ka (2σ) for the Newer Cones series, with a diffuse age progression in the onset of volcanism for these features from east to west. Analyses of the distribution and geomorphology of these volcanic features indicates a strong control of basement faults on volcanism, reflected in alignment of volcanic features along Paleozoic north‐south oriented basement faults in the east and Cretaceous northwest‐southeast oriented extensional features in the west. This age progression can be explained by a westerly migration of stress derived from the left‐lateral strike‐slip Tasman Fracture Zone. This suggests that the general mechanism of volcanism changed from upwelling due to plume‐assisted edge‐driven convection prior to ∼4 Ma to stress‐dependent upwelling at around 1.3 Ma.

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Section: Introductionsupporting

confidence: 59%

Section: Discussionmentioning

confidence: 99%

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⁴⁰Ar/³⁹Ar geochronology reveals rapid change from plume‐assisted to stress‐dependent volcanism in the Newer Volcanic Province, SE Australia

Oostingh

Jourdan

Matchan

et al. 2017

Geochem Geophys Geosyst

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“…Consequently, these data cannot defi nitively distinguish between the competing hypotheses of vertical incision and knickpoint propagation, or confi dently establish long-term propagation rates. Since the study of Seidl et al (1997), cosmogenic exposure dating methodology and constraints on production rates have greatly improved, notably for the use of cosmogenic 3 He in olivine (e.g., Licciardi et al, 1999;Dunai and Wijbrans, 2000;Gayer et al, 2008;Amidon et al, 2009;Fenton et al, 2009;Gillen et al, 2010;Goehring et al, 2010).…”

Section: Previous Work and Rationalementioning

confidence: 99%

Knickpoint formation, rapid propagation, and landscape response following coastal cliff retreat at the last interglacial sea-level highstand: Kaua'i, Hawai'i

Mackey

Scheingross

Lamb

et al. 2014

Geological Society of America Bulletin

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Upstream knickpoint propagation is an important mechanism for channel incision, and it communicates changes in climate, sea level, and tectonics throughout a landscape. Few studies have directly measured the longterm rate of knickpoint retreat, however, and the mechanisms for knickpoint initiation are debated. Here, we use cosmogenic 3 He exposure dating to document the retreat rate of a waterfall in Ka'ula'ula Valley, Kaua'i, Hawai'i, an often-used site for knickpointerosion modeling. Cosmogenic exposure ages of abandoned surfaces are oldest near the coast (120 ka) and systematically decrease with upstream distance toward the waterfall (<10 ka), suggesting that the waterfall migrated nearly 4 km over the past 120 k.y. at an average rate of 33 mm/yr. Upstream of the knickpoint, cosmo genic nuclide concentrations in the channel are approximately uniform and indicate steady-state vertical erosion at a rate of ~0.03 mm/yr. Field observations and topographic analysis suggest that waterfall retreat is dominated by block toppling, with sediment transport below the waterfall actively occurring by debris fl ows. Knickpoint initiation was previously attributed to a submarine landslide ca. 4 Ma; however, our dating results, bathymetric analysis, and landscape-evolution modeling support knickpoint generation by wave-induced seacliff erosion during the last interglacial sealevel highstand ca. 120-130 ka. We illustrate that knickpoint generation during sea-level highstands, as opposed to the typical case of sea-level fall, is an important relief-generating mechanism on stable or subsiding steep coasts, and likely drives transient pulses of signifi cant sediment fl ux.

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“…The results of this study, and similar studies (e.g., Matchan and Phillips, 2014) indicate that multicollector 40 Ar/ 39 Ar incremental-heating of acid-treated samples is able to provide ages for young mafic volcanic events. If increased precision is required for the youngest eruptions, radiocarbon, thermoluminescence, or optically stimulated luminescence analyses may also be beneficial (e.g., Sherwood et al, 2004;Gillen et al, 2010). We recommend that such an integrated chronological study, combined with detailed mapping of the region to find new flows/eruptions and an examination of erupted volumes through time, is required to evaluate the volcanic history and future hazard in north Queensland, Australia.…”

Section: Eruption Frequency In Northern Queenslandmentioning

confidence: 99%

Holocene-Neogene volcanism in northeastern Australia: Chronology and eruption history

Cohen

Mark

Fallon

et al. 2017

Quaternary Geochronology

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Quaternary and late Neogene volcanism is widespread in northeastern Australia, producing at least 397 eruptions covering more than 20,000 km 2 , including at least 20 flows over 50 km long. Despite this abundance of young volcanism, before this study numerous eruptions had tentative ages or were undated, and the area requires a comprehensive evaluation of eruption patterns through time. To help address these issues we applied multi-collector ARGUS-V 40 Ar/ 39 Ar geochronology to determine the age of four of the younger extensive flows: Undara (160 km long, 189 ± 4/4 ka; 2σ, with full analytical/external uncertainties), Murronga (40 km long, 153 ± 5/5 ka), Toomba (120 km long, 21 ± 3/3 ka), and Kinrara (55 km long, 7 ± 2/2 ka). Verbal traditions of the Gugu Badhun Aboriginal people contain features that may potentially describe the eruption of Kinrara. If the traditions do record this eruption, they would have been passed down for 230 ± 70 generations -a period of time exceeding the earliest written historical records. To further examine north Queensland volcanism through time we compiled a database of 337 ages, including 179 previously unpublished K-Ar and radiocarbon results. The compiled ages demonstrate that volcanic activity has occurred without major time breaks since at least 9 Ma. The greatest frequency of eruptions occurred in the last 2 Ma, with an average recurrence interval of <10-22 ka between eruptions. Activity was at at times likely more frequent than these calculations indicate, as the geochronologic dataset is incomplete, with undated eruptions, and intraplate volcanism is often episodic. The duration, frequency, and youthfulness of activity indicate that north Queensland volcanism should be considered as potentially still active, and there are now two confirmed areas of Holocene volcanism in eastern Australia -one at each end of the continent. More broadly, our data provides another example of 40 Ar/ 39 Ar geochronology applied to Holocene and latest Pleistocene mafic eruptions, further demonstrating that this method has the ability to examine eruptions and hazards at the youngest volcanoes on Earth.

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Cosmogenic 21Ne exposure dating of young basaltic lava flows from the Newer Volcanic Province, western Victoria, Australia

Cited by 23 publications

References 44 publications

⁴⁰Ar/³⁹Ar geochronology reveals rapid change from plume‐assisted to stress‐dependent volcanism in the Newer Volcanic Province, SE Australia

⁴⁰Ar/³⁹Ar geochronology reveals rapid change from plume‐assisted to stress‐dependent volcanism in the Newer Volcanic Province, SE Australia

Knickpoint formation, rapid propagation, and landscape response following coastal cliff retreat at the last interglacial sea-level highstand: Kaua'i, Hawai'i

Holocene-Neogene volcanism in northeastern Australia: Chronology and eruption history

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Cosmogenic 21Ne exposure dating of young basaltic lava flows from the Newer Volcanic Province, western Victoria, Australia

Cited by 23 publications

References 44 publications

40Ar/39Ar geochronology reveals rapid change from plume‐assisted to stress‐dependent volcanism in the Newer Volcanic Province, SE Australia

40Ar/39Ar geochronology reveals rapid change from plume‐assisted to stress‐dependent volcanism in the Newer Volcanic Province, SE Australia

Knickpoint formation, rapid propagation, and landscape response following coastal cliff retreat at the last interglacial sea-level highstand: Kaua'i, Hawai'i

Holocene-Neogene volcanism in northeastern Australia: Chronology and eruption history

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⁴⁰Ar/³⁹Ar geochronology reveals rapid change from plume‐assisted to stress‐dependent volcanism in the Newer Volcanic Province, SE Australia

⁴⁰Ar/³⁹Ar geochronology reveals rapid change from plume‐assisted to stress‐dependent volcanism in the Newer Volcanic Province, SE Australia