ERDDAP > info > bcodmo_dataset_806957

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Acces- sible	Title	Sum- mary	ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
		data	graph		files	public	Table 2. Elemental ratios and partition coefficients for CaCO3 in deepsea conditions: Mg, S, Sr, and Ba between crystallized solids and fluid.		I   M	background			BCO-DMO	bcodmo_dataset_806957

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	access_formats	String	.htmlTable,.csv,.json,.mat,.nc,.tsv
attribute	NC_GLOBAL	acquisition_description	String	X-ray diffraction (XRD) Powdered samples were examined for mineral presence using a Rigaku Ultima III X-ray Diffraction (XRD) System at the Institute of Imaging and Analytical Technologies (i2AT) at Mississippi State University. These analyses were conducted at 40 kV and 40 mA. Elemental analysis of experimental aragonite crystals and experimental fluids with ICP-MS Crystals were dissolved and solutions were analyzed by ICP-MS. Experimental fluids were also analyzed with ICP-MS, as well. Analyses were conducted on an Agilent 7900 quadrupole ICP-MS equipped with a glass nebulizer at the University of Rochester (Rochester, NY). Prior to analysis, fluid samples were diluted with 2% trace metal grade HNO3 (Fisher) in the volume proportion of 1:100. Aragonite crystals were dissolved in HNO3 in the mass proportion of 1:1000. Experimental fluid samples were analyzed using a 5-point calibration curve (one blank and four standards). Seawater standards were prepared by diluting a seawater certificate reference material (CRM-SW; High-Purity Standards) to a final concentration of ~300, 200, 150, and 80 ppm. Experimental crystals were analyzed using a 5-point calibration curve (one blank and four standards). Calcium carbonate standards were prepared by dissolving and diluting the original MACS-3 powder to a final concentration of ~111, 55, 27, and 11 ppm. Because S concentration was not reported in the certificate of analysis provided by the USGS, we added a small amount of sulfur single element standard (Inorganic Ventures) to a final concentration of ~1.5, 0.75, 0.375, and 0.150 ppm, in each MACS-3 standard we prepared. Samples, blanks, and standards were also spiked with 2 ppb indium, which was used as the internal standard to check for possible instrumental drift during each analytical session. The instrument was tuned at the beginning of each analytical session (two analytical sessions in two consecutive days). 24Mg, 34S, 43Ca, 88Sr, 138Ba, and 238U were analyzed.\u00a0 Integration times were the following: 0.3 s for 24Mg; 0.12 s for 43Ca, 88Sr, and 138Ba; 0.99 s for 238U. The calibration curve was run before analyzing each set of samples. For each element analyzed, the correlation among standards was 0.9923 or better. Elements were identified using three peaks. Each analysis included three replicates, with 100 sweeps/replicate. The carrier gas (argon) flow was set at 1.15 L/min. In addition, we used helium flow of 4.2 milliliters per minute in the collision reaction cell in the ICP-MS to minimize oxide interference. At the end of each tuning, oxides and doubly-charged ion interferences were below 0.8% and 1.4%, respectively. Data were computed automatically during the run using the Agilent Mass Hunter 4.1 workstation software v. C.01.01. Results XRD spectra identified the presence of aragonite and monohydrocalcite (Table 2). Only aragonite crystallized at intermediate pressure (110 bars). Calculations of fluid carbonate chemistry were conducted with a CO2SYS spreadsheet (Lewis and Wallace, 1998) \u00a0and presented in Table 1. There, measured pH and total alkalinity (TA) were used to calculate the concentration of CO32-, which together with Ca2+ is necessary to calculate fluid saturation states with respect to aragonite (Omega-Ar). Precipitation started at saturation state, which exceeds that of artificial seawater (ASW) by the factor of ~25. Over the course of the experiments, Omega-Ar decreased back to 2, i.e. Omega-Ar value of ASW prior to the addition of Na2CO3. Table 2 contains E/Ca of experimental products (solids and liquids) as well as the Doener-Hoskins apparent partition coefficients between solid and fluid (KE). Fluid composition changed during individual experiments, and therefore, values of KE were calculated using the Doener-Hoskins relationship: \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0KE= log(1+ mE^aragonite /mE^fluid) / log(1+ mCa^aragonite /mCa^fluid)\u00a0 \u00a0 (1) where m^aragonite is the total number of moles of element (i.e., Mg, S, Sr, Ba, or U) or Ca in the final precipitate, and m^fluid is the total number of moles of element or Ca in the final fluid (Doerner and Hoskins, 1925). Software products used: XRD: Jade and Microsoft Excel ICP-MS: Agilent Mass Hunter 4.1 workstation software v. C.01.01 and Microsoft Excel
attribute	NC_GLOBAL	awards_0_award_nid	String	554980
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-0939564
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward?AWD_ID=0939564
attribute	NC_GLOBAL	awards_0_funder_name	String	NSF Division of Ocean Sciences
attribute	NC_GLOBAL	awards_0_funding_acronym	String	NSF OCE
attribute	NC_GLOBAL	awards_0_funding_source_nid	String	355
attribute	NC_GLOBAL	awards_0_program_manager	String	David L. Garrison
attribute	NC_GLOBAL	awards_0_program_manager_nid	String	50534
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	Trace elements in CaCO3 and fluid Table 2. Elemental ratios and partition coefficients for CaCO3 in deepsea conditions (Mg, S, Sr, and Ba between crystallized solids and fluid) PI: R. Gabitov (Miss. State) version date: 2020-03-25 (*) - KE Doener-Hoskins values cannot be used for aragonite-fluid partitioning because other carbonate minerals precipitated in those runs. Runs: ASW = Artificial SeaWater (Instant Ocean); other fluid samples are from the end of experiments; LP = low pressure run; RPI = runs performed at Rensselaer Polytechnic Institute Minerals: Ar = aragonite; MHC = monohydrocalcite; CaCO3-II = monoclinic calcium carbonate.
attribute	NC_GLOBAL	Conventions	String	COARDS, CF-1.6, ACDD-1.3
attribute	NC_GLOBAL	creator_email	String	info at bco-dmo.org
attribute	NC_GLOBAL	creator_name	String	BCO-DMO
attribute	NC_GLOBAL	creator_type	String	institution
attribute	NC_GLOBAL	creator_url	String	https://www.bco-dmo.org/
attribute	NC_GLOBAL	data_source	String	extract_data_as_tsv version 2.3 19 Dec 2019
attribute	NC_GLOBAL	date_created	String	2020-03-25T19:25:25Z
attribute	NC_GLOBAL	date_modified	String	2020-04-09T12:58:47Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.26008/1912/bco-dmo.806957.1
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/806957
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	unknown
attribute	NC_GLOBAL	instruments_0_dataset_instrument_description	String	Custom designed pressure chamber used to simulate the high-pressure conditions at the seafloor for this set of experiments (designed at Rensselaer Polytech Institute, Department of Earth and Environmental Sciences).
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	806964
attribute	NC_GLOBAL	instruments_0_description	String	No relevant match in BCO-DMO instrument vocabulary.
attribute	NC_GLOBAL	instruments_0_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/999/
attribute	NC_GLOBAL	instruments_0_instrument_name	String	unknown
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	575
attribute	NC_GLOBAL	instruments_0_supplied_name	String	high-pressure apparatus
attribute	NC_GLOBAL	instruments_1_acronym	String	XRD
attribute	NC_GLOBAL	instruments_1_dataset_instrument_description	String	Located at  at Mississippi State University
attribute	NC_GLOBAL	instruments_1_dataset_instrument_nid	String	806976
attribute	NC_GLOBAL	instruments_1_description	String	Instruments that identify crystalline solids by measuring the characteristic spaces between layers of atoms or molecules in a crystal.
attribute	NC_GLOBAL	instruments_1_instrument_name	String	X-ray diffractometer
attribute	NC_GLOBAL	instruments_1_instrument_nid	String	625931
attribute	NC_GLOBAL	instruments_1_supplied_name	String	Rigaku Ultima III X-ray Diffraction (XRD) System at the Institute of Imaging and Analytical Technologies (i2AT)
attribute	NC_GLOBAL	instruments_2_acronym	String	ICP-OES
attribute	NC_GLOBAL	instruments_2_dataset_instrument_nid	String	806975
attribute	NC_GLOBAL	instruments_2_description	String	Also referred to as an Inductively coupled plasma atomic emission spectroscope (ICP-AES). These instruments pass nebulised samples into an inductively-coupled gas plasma (8-10000 K) where they are atomised and excited. The de-excitation optical emissions at characteristic wavelengths are spectroscopically analysed. It is often used in the detection of trace metals.
attribute	NC_GLOBAL	instruments_2_instrument_name	String	Inductively Coupled Plasma Optical Emission Spectrometer
attribute	NC_GLOBAL	instruments_2_instrument_nid	String	639924
attribute	NC_GLOBAL	instruments_2_supplied_name	String	Agilent 7900 quadrupole ICP-MS equipped with a glass nebulizer at the University of Rochester (Rochester, NY)
attribute	NC_GLOBAL	keywords	String	2sd, analysis, Ba_Ca, Ba_Ca_2sd, bco, bco-dmo, biological, chemical, data, dataset, dmo, erddap, kba, Kba_2sd, kmg, KMg_2sd, KS_2sd, ksr, KSr_2sd, management, Mg_Ca, Mg_Ca_2sd, minerals, oceanography, office, preliminary, press, run, S_Ca, S_Ca_2sd, Sr_Ca, Sr_Ca_2sd
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/806957/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/806957
attribute	NC_GLOBAL	param_mapping	String	{'806957': {}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/806957/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	Mississippi State University
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	MSU
attribute	NC_GLOBAL	people_0_person_name	String	Rinat Gabitov
attribute	NC_GLOBAL	people_0_person_nid	String	743432
attribute	NC_GLOBAL	people_0_role	String	Principal Investigator
attribute	NC_GLOBAL	people_0_role_type	String	originator
attribute	NC_GLOBAL	people_1_affiliation	String	University of Rochester
attribute	NC_GLOBAL	people_1_person_name	String	Chiara Borrelli
attribute	NC_GLOBAL	people_1_person_nid	String	743434
attribute	NC_GLOBAL	people_1_role	String	Co-Principal Investigator
attribute	NC_GLOBAL	people_1_role_type	String	originator
attribute	NC_GLOBAL	people_2_affiliation	String	Rensselaer Polytechnic Institute
attribute	NC_GLOBAL	people_2_affiliation_acronym	String	RPI
attribute	NC_GLOBAL	people_2_person_name	String	Karyn Rogers
attribute	NC_GLOBAL	people_2_person_nid	String	661573
attribute	NC_GLOBAL	people_2_role	String	Co-Principal Investigator
attribute	NC_GLOBAL	people_2_role_type	String	originator
attribute	NC_GLOBAL	people_3_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_3_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_3_person_name	String	Nancy Copley
attribute	NC_GLOBAL	people_3_person_nid	String	50396
attribute	NC_GLOBAL	people_3_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_3_role_type	String	related
attribute	NC_GLOBAL	project	String	Deep Sea Geochem CaCO3
attribute	NC_GLOBAL	projects_0_acronym	String	Deep Sea Geochem CaCO3
attribute	NC_GLOBAL	projects_0_description	String	Biologically-mediated CaCO3 precipitation widely occurs in aquatic systems and is often directly linked to the metabolic activity of microorganisms, which could significantly affect the local environment. An example is oxidation of methane and reduction of sulfate mediated by a consortium of Bacteria and Archaea. In order to investigate geochemistry of CaCO3precipitated abiotically and under microbial activity experimental work was initiated.  The abiotic experiments were performed at different temperatures and pressures (nitrogen and nitrogen-methane mixture).  Further geochemical analyses will allow evaluating of the effect of total pressure and methane partial pressure on the geochemistry of CaCO3. Sulfate reducing bacterial (Desulfovibrio salexigens) was successfully cultured and precipitation experiments on microbially mediated CaCO3 are in progress. This work is relevant to C-DEBI Research Theme I (Activity in the Deep Subseafloor Biosphere: function & rates of global biogeochemical processes) because carbonate growth rate is linked to microbial activity and the rate of methane oxidation.
attribute	NC_GLOBAL	projects_0_end_date	String	2014-09
attribute	NC_GLOBAL	projects_0_name	String	Biologically induced methane oxidation and precipitation of carbonate minerals: An experimental study
attribute	NC_GLOBAL	projects_0_project_nid	String	743426
attribute	NC_GLOBAL	projects_0_project_website	String	https://www.darkenergybiosphere.org/award/biologically-induced-methane-oxidation-and-precipitation-of-carbonate-minerals-an-experimental-study/
attribute	NC_GLOBAL	projects_0_start_date	String	2014-05
attribute	NC_GLOBAL	publisher_name	String	Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute	NC_GLOBAL	publisher_type	String	institution
attribute	NC_GLOBAL	sourceUrl	String	(local files)
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	summary	String	Trace elements in CaCO3 and fluid. Table 2. Elemental ratios and partition coefficients for CaCO3 in deepsea conditions: Mg, S, Sr, and Ba between crystallized solids and fluid.
attribute	NC_GLOBAL	title	String	Table 2. Elemental ratios and partition coefficients for CaCO3 in deepsea conditions: Mg, S, Sr, and Ba between crystallized solids and fluid.
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	analysis		String
attribute	analysis	bcodmo_name	String	unknown
attribute	analysis	description	String	The type of analysis: solids; fluids; or KE (Doener-Hoskins partition coefficients between solid and fluid)
attribute	analysis	long_name	String	Analysis
attribute	analysis	units	String	unitless
variable	run		String
attribute	run	bcodmo_name	String	exp_id
attribute	run	description	String	experimental run identifier
attribute	run	long_name	String	Run
attribute	run	units	String	unitless
variable	press		short
attribute	press	_FillValue	short	32767
attribute	press	actual_range	short	1, 345
attribute	press	bcodmo_name	String	pressure
attribute	press	description	String	pressure
attribute	press	long_name	String	Press
attribute	press	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/PRESPR01/
attribute	press	units	String	bars
variable	minerals		String
attribute	minerals	bcodmo_name	String	unknown
attribute	minerals	description	String	minerals identified with X-ray diffraction technique: aragonite; monoclinic carbonate (CaCO3-II)
attribute	minerals	long_name	String	Minerals
attribute	minerals	units	String	unitless
variable	Mg_Ca		float
attribute	Mg_Ca	_FillValue	float	NaN
attribute	Mg_Ca	actual_range	float	8.284, 22360.0
attribute	Mg_Ca	bcodmo_name	String	unknown
attribute	Mg_Ca	description	String	magnesium to calcium ratio in carbonate crystals (solids) or in fluid at end of experiment
attribute	Mg_Ca	long_name	String	Mg Ca
attribute	Mg_Ca	units	String	millimole per mole of calcium
variable	Mg_Ca_2sd		float
attribute	Mg_Ca_2sd	_FillValue	float	NaN
attribute	Mg_Ca_2sd	actual_range	float	0.414, 1118.0
attribute	Mg_Ca_2sd	bcodmo_name	String	unknown
attribute	Mg_Ca_2sd	description	String	two standard deviations from the mean of magnesium to calcium ratio
attribute	Mg_Ca_2sd	long_name	String	Mg Ca 2sd
attribute	Mg_Ca_2sd	units	String	millimole per mole of calcium
variable	S_Ca		float
attribute	S_Ca	_FillValue	float	NaN
attribute	S_Ca	actual_range	float	7.042, 11956.0
attribute	S_Ca	bcodmo_name	String	unknown
attribute	S_Ca	description	String	sulfur to calcium ratio in carbonate crystals (solids) or in fluid at end of experiment
attribute	S_Ca	long_name	String	S Ca
attribute	S_Ca	units	String	millimole per mole of calcium
variable	S_Ca_2sd		float
attribute	S_Ca_2sd	_FillValue	float	NaN
attribute	S_Ca_2sd	actual_range	float	0.352, 598.0
attribute	S_Ca_2sd	bcodmo_name	String	unknown
attribute	S_Ca_2sd	description	String	two standard deviations from the mean of sulfur to calcium ratio
attribute	S_Ca_2sd	long_name	String	S Ca 2sd
attribute	S_Ca_2sd	units	String	micromole per mole of calcium
variable	Sr_Ca		float
attribute	Sr_Ca	_FillValue	float	NaN
attribute	Sr_Ca	actual_range	float	8.17, 16.676
attribute	Sr_Ca	bcodmo_name	String	unknown
attribute	Sr_Ca	description	String	strontium to calcium ratio in carbonate crystals (solids) or in fluid at end of experiment
attribute	Sr_Ca	long_name	String	Sr Ca
attribute	Sr_Ca	units	String	millimole per mole of calcium
variable	Sr_Ca_2sd		float
attribute	Sr_Ca_2sd	_FillValue	float	NaN
attribute	Sr_Ca_2sd	actual_range	float	0.408, 0.834
attribute	Sr_Ca_2sd	bcodmo_name	String	unknown
attribute	Sr_Ca_2sd	description	String	two standard deviations from the mean of strontium to calcium ratio
attribute	Sr_Ca_2sd	long_name	String	Sr Ca 2sd
attribute	Sr_Ca_2sd	units	String	millimole per mole of calcium
variable	Ba_Ca		float
attribute	Ba_Ca	_FillValue	float	NaN
attribute	Ba_Ca	actual_range	float	3.73, 27.7
attribute	Ba_Ca	bcodmo_name	String	unknown
attribute	Ba_Ca	description	String	barium to calcium ratio in carbonate crystals (solids) or in fluid at end of experiment
attribute	Ba_Ca	long_name	String	Ba Ca
attribute	Ba_Ca	units	String	millimole per mole of calcium
variable	Ba_Ca_2sd		float
attribute	Ba_Ca_2sd	_FillValue	float	NaN
attribute	Ba_Ca_2sd	actual_range	float	0.187, 1.4
attribute	Ba_Ca_2sd	bcodmo_name	String	unknown
attribute	Ba_Ca_2sd	description	String	two standard deviations from the mean of barium to calcium ratio
attribute	Ba_Ca_2sd	long_name	String	Ba Ca 2sd
attribute	Ba_Ca_2sd	units	String	micromole per mole of calcium
variable	KMg		float
attribute	KMg	_FillValue	float	NaN
attribute	KMg	actual_range	float	0.848, 3.37
attribute	KMg	bcodmo_name	String	unknown
attribute	KMg	description	String	Doener-Hoskins partition coefficients of magnesium multiplied by 1000
attribute	KMg	long_name	String	KMG
attribute	KMg	units	String	unitless
variable	KMg_2sd		float
attribute	KMg_2sd	_FillValue	float	NaN
attribute	KMg_2sd	actual_range	float	0.0167, 0.129
attribute	KMg_2sd	bcodmo_name	String	unknown
attribute	KMg_2sd	description	String	two standard deviations from the mean of Doener-Hoskins partition coefficients of magnesium multiplied by 1000
attribute	KMg_2sd	long_name	String	KMG 2SD
attribute	KMg_2sd	units	String	unitless
variable	KS		float
attribute	KS	_FillValue	float	NaN
attribute	KS	actual_range	float	1.31, 3.85
attribute	KS	bcodmo_name	String	unknown
attribute	KS	description	String	Doener-Hoskins partition coefficients of sulfur multiplied by 1000
attribute	KS	long_name	String	KS
attribute	KS	units	String	unitless
variable	KS_2sd		float
attribute	KS_2sd	_FillValue	float	NaN
attribute	KS_2sd	actual_range	float	0.169, 0.406
attribute	KS_2sd	bcodmo_name	String	unknown
attribute	KS_2sd	description	String	two standard deviations from the mean of Doener-Hoskins partition coefficients of sulfur multiplied by 1000
attribute	KS_2sd	long_name	String	KS 2SD
attribute	KS_2sd	units	String	unitless
variable	KSr		float
attribute	KSr	_FillValue	float	NaN
attribute	KSr	actual_range	float	0.769, 1.197
attribute	KSr	bcodmo_name	String	unknown
attribute	KSr	description	String	Doener-Hoskins partition coefficients of strontium
attribute	KSr	long_name	String	KSR
attribute	KSr	units	String	unitless
variable	KSr_2sd		float
attribute	KSr_2sd	_FillValue	float	NaN
attribute	KSr_2sd	actual_range	float	0.048, 0.1
attribute	KSr_2sd	bcodmo_name	String	unknown
attribute	KSr_2sd	description	String	two standard deviations from the mean of Doener-Hoskins partition coefficients of strontium
attribute	KSr_2sd	long_name	String	KSR 2SD
attribute	KSr_2sd	units	String	unitless
variable	KBa		float
attribute	KBa	_FillValue	float	NaN
attribute	KBa	actual_range	float	1.12, 2.23
attribute	KBa	bcodmo_name	String	unknown
attribute	KBa	description	String	Doener-Hoskins partition coefficients of barium
attribute	KBa	long_name	String	KBa
attribute	KBa	units	String	unitless
variable	Kba_2sd		float
attribute	Kba_2sd	_FillValue	float	NaN
attribute	Kba_2sd	actual_range	float	0.127, 0.591
attribute	Kba_2sd	bcodmo_name	String	unknown
attribute	Kba_2sd	description	String	two standard deviations from the mean of Doener-Hoskins partition coefficients of barium
attribute	Kba_2sd	long_name	String	Kba 2sd
attribute	Kba_2sd	units	String	unitless

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.