Miocene isotope zones, paleotemperatures, and carbon maxima events at intermediate water‐depth, Site 593, Southwest Pacific

Cooke, Penelope J.; Nelson, Campbell S.; Crundwell, Martin P.

doi:10.1080/00288300809509846

Cited by 25 publications

(32 citation statements)

References 95 publications

(116 reference statements)

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“…Establishment of this large meridional δ 13 C gradient suggests that the permanent production of SCIW has occurred at least since the early Miocene. This finding does not conform to the previous inferences on the SCIW production and intensity at other South Pacific/Southern Ocean deep-sea sites, including a temporary increase in the SCIW velocity or corrosivity during the MMCO (as inferred from stable isotope data and the orange-colored oxidized unit in contact with an unconformity at Site 593; Cooke et al, 2008;Flower and Kennett, 1995), and the establishment of the maximum verticalmeridional δ 13 C gradient due to intensified SCIW and PDW during the middle Miocene δ 18 O shift or MMCO (Flower and Kennett, 1995;. Because these previous models were chiefly interpreted as reflecting the growth of EAIS, our new view for pre-MMCO establishment of SCIW is important.…”

Section: Implications For Miocene Sciw Studycontrasting

confidence: 66%

Chemostratigraphic documentation of a complete Miocene intermediate-depth section in the Southern Ocean: Ocean Drilling Program Site 1120, Campbell Plateau off New Zealand

et al. 2011

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Section: Implications For Miocene Sciw Studycontrasting

confidence: 66%

Chemostratigraphic documentation of a complete Miocene intermediate-depth section in the Southern Ocean: Ocean Drilling Program Site 1120, Campbell Plateau off New Zealand

et al. 2011

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“…1) and proxy estimates, which validated large-scale decline of CO 2 in the Oligocene until ~24 Ma 11,12 . The buildup of organic carbon-rich sediments during the Early-Middle Miocene Climate Optimum (MMCO) augmented the inorganic carbon isotopic value of foraminiferal calcite 13 , resulting in carbon maxima (CM) events (CM1-7) as recorded by global deep-water benthic δ 13 C archives (Fig. 1).…”

mentioning

confidence: 99%

“…The isotope data interpreted from 10 , is an amalgam of more than 40 Deep Sea Drilling Project (DSDP) and Ocean Drilling Program (ODP) sites and demonstrates several peaks and steps that corroborate to occurrences of global warming and cooling and the expansion and decay of ice sheets. The timing of globally-recognized Middle Miocene Climate Optimum (MMCO), Late Oligocene warming, Miocene glacial events (Mi1-Mi7) and carbon maxima (CM) events based on the analysis of benthic foraminifera are interpreted from 13 . Thick red line represents the reconstruction of proxy-based partial pressure of atmospheric carbon dioxide (pCO 2 ) that has been interpreted from 63 .…”

mentioning

confidence: 99%

The emergence of Miocene reefs in South China Sea and its resilient adaptability under varying eustatic, climatic and oceanographic conditions

Mathew

Makhankova

Menier

et al. 2020

Sci Rep

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During the Miocene, extensive carbonate deposition thrived over wide latitudinal ranges in SoutheastAsia despite perturbations of the global climate and thermohaline circulation that affected the Asian continent. nevertheless, the mechanisms of its emergence, adaptability in siliciclastic-dominated margins and demise, especially in southern South china Sea (ScS), are largely speculative and remains enigmatic along with a scarcity of constraints on paleoclimatic and palaeoceanographic conditions. Here we show, through newly acquired high-resolution geophysical data and accurate stratigraphic records based on strontium isotopic dating, the evolution of these platforms from ~15.5-9.5 Ma is initially tied to tectonics and eustasy, and ultimately, after ~9.5 Ma, to changes in the global climate patterns and consequent palaeoceanographic conditions. our results demonstrate at least two paleodeltas that provided favourable substratum of elevated sand bars, which conditioning the emergence of the buildups that inadvertently mirrored the underlying strata. We show unprecedented evidences for ocean current fluctuations linked to the intensification of the Asian summer monsoon winds resulting in the formation of drifts and moats, which extirpated the platforms through sediment removal and starvation. this work highlights the imperative role of palaeoceanography in creating favourable niches for reefal development that can be applicable to carbonate platforms elsewhere.A gargantuan modification of the planetary climate system and the thermohaline circulation patterns occurred in the Cenozoic with the inflection point being diffused from exceptionally critical tectonic processes that affected Asia 1,2 . At ca. 24 Ma, in close proximity to the Oligocene-Miocene boundary, the continent experienced a transformation of climatic processes from a latitudinal zonal circulation pattern to a monsoon-dominated configuration along with the evanescing of an extensively prevalent subtropical-aridity across Asia and the inception of aridity that was exclusively restricted to the hinterland of eastern Asia 3 . The Asian continent experienced a dynamic climate transition that was instigated by the Paleocene-Eocene collision of the Indian Plate with Asia and the resulting progressive uplift of the Tibetan Plateau (TP). This caused an array of feedbacks that significantly strengthened monsoon-inducing atmospheric circulation with each of its major orogenic pulses 4 (i.e., at (i) ca. and (iii) ca. 15-10 Ma [refer to Fig. 1 for (ii) and (iii)]). Over a span of ~30 Ma, the stepwise exhumation of the TP governed an accelerated amplification of firstly, the Indian Summer Monsoon (ISM) and the Somali Jet with the initial pulse of uplift; secondly, the Southeast Asian Monsoon, the East Asian Summer Monsoon (EASM) and the East Asian Winter Monsoon (EAWM) with 40% uplift of the TP; and lastly, the further intensification of the EASM and EAWM with 80% uplift of the TP 5,6 (Fig. 1). This last uplift

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“…6) indicates a progression from slope to shelf paleodepths overtime. Additionally, sea level oscillations during the late Miocene are prevalent, in particular sea level fall in the Messinian (New Zealand Kapitean Stage) (Hodell et al, 1986;Cooke et al, 2008).…”

Section: Implicating Methane Hydratesmentioning

confidence: 99%

Miocene tubular concretions in East Coast Basin, New Zealand: Analogue for the subsurface plumbing of cold seeps

2010

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Miocene isotope zones, paleotemperatures, and carbon maxima events at intermediate water‐depth, Site 593, Southwest Pacific

Abstract: Oxygen and carbon isotopic stratigraphies are

Cited by 25 publications

References 95 publications

Chemostratigraphic documentation of a complete Miocene intermediate-depth section in the Southern Ocean: Ocean Drilling Program Site 1120, Campbell Plateau off New Zealand

Chemostratigraphic documentation of a complete Miocene intermediate-depth section in the Southern Ocean: Ocean Drilling Program Site 1120, Campbell Plateau off New Zealand

The emergence of Miocene reefs in South China Sea and its resilient adaptability under varying eustatic, climatic and oceanographic conditions

Miocene tubular concretions in East Coast Basin, New Zealand: Analogue for the subsurface plumbing of cold seeps

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