The record of continental dust from Australia in Tasman Sea Sediments

Hesse, Paul

doi:10.1016/0277-3791(94)90029-9

Cited by 240 publications

(157 citation statements)

References 41 publications

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“…The glass contribution is evident in the altered smectite clays (Gardner et al 1986b). Aeolian material is evident in the Quaternary Tasman Basin sediments, which is consistent with the modern, predominantly westerly wind system blowing dust across the Tasman Sea from southern Australia (Hesse 1994). Dust has been reported on South Island snowfields with a size peak at c. 40 µm (Marshall & Kidson 1929;Windom 1969).…”

Section: Mud Size Modes and Compositionsupporting

confidence: 59%

Textural variations in Neogene pelagic carbonate ooze at DSDP Site 593, southern Tasman Sea, and their paleoceanographic implications

Cooke¹,

Nelson

Crundwell

et al. 2004

New Zealand Journal of Geology and Geophysics

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Changes in Neogene sediment texture in pelagic carbonate-rich oozes on the Challenger Plateau, southern Tasman Sea, are used to infer changes in depositional paleocurrent velocities. The most obvious record of textural change is in the mud: sand ratio. Increases in the sand content are inferred to indicate a general up-core trend towards increasing winnowing of sediments resulting from increasing flow velocity of Southern Component Intermediate Water (SCIW), the forerunner of Antarctic Intermediate Water. In particular, the intervals c. 19-14.5 Ma, c. 9.5-8 Ma, and after 5 Ma are suggested to be times of increased SCIW velocity and strong sediment winnowing. Within the mud fraction, the fine silt to coarse clay sizes from 15.6 to 2 µm make the greatest contribution to the sediments and are composed of nannofossil plates. During extreme winnowing events it is the fine silt to very coarse clay material (13-3 µm) within this range that is preferentially removed, suggesting the 10 µm cohesive silt boundary reported for siliciclastic sediments does not apply to calcitic skeletal grains. The winnowed sediment comprises coccolithophore placoliths and spheres, represented by a mode at 4-7 µm.Further support for seafloor winnowing is gained from the presence in Hole 593 of a condensed sedimentary section from c. 18 to 14 Ma where the sand content increases to c. 20% of the bulk sample. Associated with the condensed section is a 6 m thick orange unit representing sediments subjected to particularly oxygen-rich, late early to early middle Miocene SCIW. Together these are inferred to indicate increased SCIW velocity resulting in winnowed sediment associated with faster arrival of oxygen-rich surface water subducted to form SCIW. Glacial development of Antarctica has been recorded from many deep-sea sites, with extreme glacials providing the mechanism to increase watermass flow. Miocene glacial zones Mi1b-Mi6 are identified in an associated oxygen isotope record from Hole 593, and correspond with times of particularly invigorated paleocirculation, bottom winnowing, and sediment textural changes.

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Section: Mud Size Modes and Compositionsupporting

confidence: 59%

Textural variations in Neogene pelagic carbonate ooze at DSDP Site 593, southern Tasman Sea, and their paleoceanographic implications

Cooke¹,

Nelson

Crundwell

et al. 2004

New Zealand Journal of Geology and Geophysics

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“…Further independent evidence supporting the more recently published fission track ages comes from two astronomically calibrated age estimates of 340 ± 7 ka for Rangitawa Tephra in deep-sea cores (Nelson 1988;Black et al 1988;Kohn et al 1992;Hesse 1994;Pillans et al in press). The correlation of the tephra in the cores with Rangitawa Tephra was achieved through electron microprobe analysis of glass shards (Kohn et al (1992) forDSDP Site 594 and Hesse (1994) for core .…”

Section: G Vucetich Waikanaementioning

confidence: 72%

“…The correlation of the tephra in the cores with Rangitawa Tephra was achieved through electron microprobe analysis of glass shards (Kohn et al (1992) forDSDP Site 594 and Hesse (1994) for core . Further, the age of Rangitawa Tephra at DSDP Site 594 is tightly constrained by the positions of several well-established biostratigraphic datums (Black et al 1988) which are globally recognised (Berggren et al 1980) and place the tephra close to the oxygen isotope stage 9/10 boundary.…”

Section: G Vucetich Waikanaementioning

confidence: 99%

Letter to the editor

Vella

Vucetich²,

Kohn

et al. 1996

New Zealand Journal of Geology and Geophysics

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“…ka onset reported elsewhere (Wyrwoll and Miller, 2001). In contrast, the dust flux from E26.1 decreased significantly following the LGM, suggesting westerly airflow over southeastern Australia moved southward and became more humid after the LGM (Hesse, 1994;Hesse and McTainsh, 1999).…”

Section: Geochronologymentioning

confidence: 87%

Integration of ice‐core, marine and terrestrial records for the Australian Last Glacial Maximum and Termination: a contribution from the OZ INTIMATE group

Turney

Haberle

Fink

et al. 2006

J Quaternary Science

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The degree to which Southern Hemisphere climatic changes during the end of the last glacial period and early Holocene (30-8 ka) were influenced or initiated by events occurring in the high latitudes of the Northern Hemisphere is a complex issue. There is conflicting evidence for the degree of hemispheric 'teleconnection' and an unresolved debate as to the principle forcing mechanism(s). The available hypotheses are difficult to test robustly, however, because the few detailed palaeoclimatic records in the Southern Hemisphere are widely dispersed and lack duplication. Here we present climatic and environmental reconstructions from across Australia, a key region of the Southern Hemisphere because of the range of environments it covers and the potentially important role regional atmospheric and oceanic controls play in global climate change. We identify a general scheme of events for the end of the last glacial period and early Holocene but a detailed reconstruction proved problematic. Significant progress in climate quantification and geochronological control is now urgently required to robustly investigate change through this period.

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The record of continental dust from Australia in Tasman Sea Sediments

Cited by 240 publications

References 41 publications

Textural variations in Neogene pelagic carbonate ooze at DSDP Site 593, southern Tasman Sea, and their paleoceanographic implications

Textural variations in Neogene pelagic carbonate ooze at DSDP Site 593, southern Tasman Sea, and their paleoceanographic implications

Letter to the editor

Integration of ice‐core, marine and terrestrial records for the Australian Last Glacial Maximum and Termination: a contribution from the OZ INTIMATE group

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