Geochemical and Sr–Nd isotopic variations in a deep-sea sediment core from Eastern Indian Ocean: Constraints on dust provenances, paleoclimate and volcanic eruption history in the last 300,000years

Abstract

Geochemical and Sr-Nd isotopic variations in a deep-sea sediment core from eastern Indian Ocean: Constraints on dust provenances, palaeoclimate and volcanic eruption history in the last 300,000 years, Marine Geology (2015Geology ( ), doi: 10.1016Geology ( /j.margeo.2015 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.A C C E P T E D M A N U S C R I P T ka section than in the older section, which might be associated with increased ACCEPTED MANUSCRIPT A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPTAustralian continental aridity towards more recent time.

New Record of Dust Input and Provenance During Glacial Periods in Western Australia Shelf (IODP Expedition 356, Site U1461) from the Middle to Late Pleistocene

“…A marked isotopic boundary is present around 15 • S, separating the Australian shelf from the Indonesian region. Samples around Indonesia (North Sumatra and Java Banda Arc) show very high radiogenic Nd signatures due to the volcanism (εNd max = 0.7, [89]). In contrast, the northwestern and western coast of Australia are characterized by low εNd (min = −27.2 [2,10]).…”

“…Nd isotopic composition of the surface sediments in Indo-Pacific[10,26,[83][84][85][86][87][88][89]. Black star indicates the location of Site U1461.…”

Mesozoic Northward Subduction Along the SE Asian Continental Margin Inferred from Magmatic Records in the South China Sea

“…The εNd(t) values of the NEBs span a narrow range from +2.90 to +2.93 and plot close to the edge of the Indian Ridge MORB field, being lower than those of the East Pacific Rise and SCS MORB, with corresponding Mesoproterozoic TDM2 model ages (1.055-1.077 Ga) similar to those of the granodiorites they are associated with. [23,60,61]; Late Jurassic and Early Cretaceous granites in South China continent [62]; SCS oceanic plagiogranite [63]; the East Pacific Rise (EPR), SCS, and Indian Ridge (IR) MORB [64]; Cretaceous adakites in the Lower Yangtze River Belt [65]; oceanic-crust-derived adakites subducted around the Pacific during the Cenozoic [66][67][68]; and Indian Ocean sediments [69][70][71]. [23,60,61]; Late Jurassic and Early Cretaceous granites in South China continent [62]; SCS oceanic plagiogranite [63]; the East Pacific Rise (EPR), SCS, and Indian Ridge (IR) MORB [64]; Cretaceous adakites in the Lower Yangtze River Belt [65]; oceanic-crust-derived adakites subducted around the Pacific during the Cenozoic [66][67][68]; and Indian Ocean sediments [69][70][71].…”

Studia Quaternaria

“…It is very important to study the palaeoclimate dynamics by using deep-sea sediments, because a climate response in the corals and sediments may be different. Some examples of these few deep-sea core studies are Steinke et al (2014), Liu et al (2015) and Ardi (2018). Steinke et al (2014) used deep-sea sediments taken from the northwestern Sumba Island to identify the upwelling variability off southern Indonesia based on shell Mg/Ca of the planktonic foraminiferal species.…”

“…Steinke et al (2014) used deep-sea sediments taken from the northwestern Sumba Island to identify the upwelling variability off southern Indonesia based on shell Mg/Ca of the planktonic foraminiferal species. On the other hand, Liu et al (2015) used deep-sea sediments collected to the south of the Sumba Island to reconstruct dust contributions from the Australian continent and volcanic eruptions history over the last 300,000 years in the region. Ardi (2018) used planktonic foraminifera assemblage to reconstruct the palaeoclimate and palaeoceanographical conditions from the Late Pleistocene in the southern off Sumba Island.…”