10.1594/PANGAEA.973164Wu, XinyingXinyingWu0009-0009-2826-3156Shenzhen Municipal Science and Technology Innovation CouncilHu, YueYueHuShenzhen Municipal Science and Technology Innovation CouncilNan, JingboJingboNanShenzhen Municipal Science and Technology Innovation CouncilYao, WeiqiWeiqiYaoShenzhen Municipal Science and Technology Innovation CouncilPANGAEA2024Biogenic bloomLate MioceneMarine bariteproductivity proxiesUpwellingSample code/labelDEPTH, sediment/rockAgeAccumulation rate, massBariteAccumulation rate, bariteOpal, biogenic silicaAccumulation rate, biogenic silicaCalcium carbonateAccumulation rate, calcium carbonate massBariumAluminiumBarium excessProductivity of carbonDrilling/drill rigDSDP/ODP/IODP sample designationAge model, Gradstein et al. (2020) GTS2020CalculatedSequential leaching method according to Eagle et al. (2003) and Paytan et al. (1993)Opal extraction according to Mortlock et al. (1989) and Lyle et al. (2019)Inductively Coupled Plasma - Optical Emission Spectrometry (ICP-OES)Inductively Coupled Plasma Mass Spectrometer (ICP-MS), Varian, Varian 820 ESAccording to Dymond et al. (1992)Leg121Joides Resolution1988-06-15T23:50:00/1988-06-24T13:30:00Dataset10.1594/PANGAEA.973162312 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalThe multi-proxies (BAR, bio-SiO2 MAR, and CaCO3 MAR) of productivity in Ocean Drilling Program (ODP) Leg 121 Site 758 Hole A (5°23.05'N, 90°21.67'E) during the late Miocene. Based on the biostratigraphic zones, we convert sediment depths to absolute ages on the Geologic Time Scale 2020 timescale (Gradstein et al., 2020; doi:10.1016/C2020-1-02369-3). We extract barite from marine sediments using the modified sequential leaching method (Eagle et al., 2003; doi:10.1029/2002PA000793; Paytan et al., 1993, doi:10.1038/366445a0) and examine the size and morphology of barite crystals by a scanning electron microscopy coupled with energy dispersive X-ray spectroscopy (SEM-EDX). We use the modified method after Mortlock et al. (1989, doi:10.1016/0198-0149(89)90092-7) and Lyle et al. (2019, doi:10.5194/cp-15-1715-2019) to extract biogenic opal from marine sediments. For the carbonate extraction, we digest sediments with 1.5 ml hydrofluoric acid and 0.5 ml concentrated nitric acid in a 50-ml Teflon tube at 180°C for 12 hours. After digestion, we evaporate all the acids on a 150°C electric heating plate. The sample reacts with 1 ml concentrated nitric acid and 1 ml Milli-Q water at 150°C for 12 hours. The supernatants are diluted to 40 g and are further prepared for Inductively Coupled Plasma Optical Emission Spectrometry analysis. We calculate mass accumulation rate (MAR) as a function of linear sedimentation rate (cm/ka) and dry bulk density (g/cm³). Sedimentation rates are obtained from the known reference points from the chronostratigraphic framework. The ODP reports obtain dry bulk density data (Peirce & Weissel, 1989; doi:10.2973/odp.proc.ir.121.115.1989). The accumulation rates of biogenic components (i.e., BAR, CaCO3 MAR, and bio-SiO2 MAR) are calculated as the product of MAR and the weight percent of biogenic components (wt%) in sediments. In the meantime, we analyze Baexcess to estimate export productivity (Pnew) following the algorithm equation after Dymond et al., 1992; doi:10.1029/92PA00181.90.36125.3842Indian OceanNational Key Research and Development Program of Chinahttps://doi.org/10.13039/5011000121662022YFF0802900National Natural Science Foundation of Chinahttps://doi.org/10.13039/50110000180942376049Natural Science Foundation of Guangdong Provincehttps://doi.org/10.13039/5011000034532024A1515012537Shenzhen Municipal Science and Technology Innovation Councilhttps://doi.org/10.13039/50110001580520231114150312001