Sulfur isotope patterns of oceanic crust on Macquarie Island-implications for global sulfur cycling G

• Other Authors: AADC (owner), AADC, DATA OFFICER (distributor), AADC, DATA OFFICER (custodian), AU/AADC > Australian Antarctic Data Centre, Australia (hasAssociationWith), Australian Antarctic Data Centre (publisher), Australian Antarctic Division (sponsor), DAVIDSON, GARRY (collaborator), DAVIDSON, GARRY (hasPrincipalInvestigator), DAVIDSON, GARRY (author), Davidson, G. (originator)
• Format: Dataset
• Language: unknown
• Published: Australian Ocean Data Network
• Subjects: geoscientificInformation; oceans; EARTH SCIENCE > SOLID EARTH > GEOCHEMISTRY > GEOCHEMICAL PROPERTIES > ISOTOPES; Sulfur isotope; Sulfur cycling; Oceanic crust; AMD/AU; CEOS; AMD; OCEAN > SOUTHERN OCEAN; SOUTHERN OCEAN > MACQUARIE ISLAND; GEOGRAPHIC REGION > POLAR; Macquarie Island; Southern Ocean
• Online Access: https://researchdata.edu.au/sulfur-isotope-patterns-cycling-g/2820576

Progress Code: completed Statement: Dates provided in temporal coverage are approximate only. Years are correct. Purpose S (sulfur isotopes) Bulk pyrite done: ie a wholerock sulfur isotope extraction was carried out. Sample wt: sample weight in g of powder aliquot used for wholerock sulfur isotope extraction. S+dish+filt: Weight of processed sample product plus the sample dish and S+dish+the extracting filter (g) dish corrn: a small weight correction required to account for water adhesion to the sample dish when removed from the dessicator. Ag2S: final weight in g of precipitated sulfide product, prior to isotopic determination. py-S ppm: calculated concentration of pyrite (or any disulfide) S in the wholerock sample, determined by gravimetric means. mono S ppm: calculated concentration of monosulfide S in the wholerock sample, determined by gravimetric means. dish (SO4): Weight of sample dish and sample for the sulfate S extraction step. SO4 g: weight of barite precipitate produced during a wholerock extraction. XRF geochem: identifies samples that also have wholerock chemistry by XRF (previously supplied metadata). MAG. SUSC.: Magnetic susceptibility of the original unprocessed sample in units of SI x 10-5E Metadata record for data from ASAC Project 2212 See the link below for public details on this project. From the abstracts of two of the references: --- Ocean Drilling Program hole 504B revealed an ocean crust hydrothermal sulphur anomaly on the dyke-lava transition, with implications for global sulphur sinks. Here we confirm the presence of the anomaly sporadically along 7.5km of dyke-basalt contact on the Macquarie Ridge at Macquarie Island, a 39-9.7 Ma slow-spreading setting. Background contact-zone pyrite S contents average 1845 ppm across ~50 m. However zones of small-scale brittle faulting that commonly occur on and above the dyke-basalt contact average between 5000 and 11000 ppm S (20-30 m widths). These consist of steep ridge-parallel faults and fault splays on the contact, overlain by up to ...