305 Works

Sonobuoy seismic data on the Chukchi Shelf and Chukchi Borderland, Arctic Ocean, acquired by the R/V Marcus G. Langseth in 2011 (MGL1112).

Bernard Coakley & Ibrahim Ilhan
This 2011 R/V Langseth expedition collected MCS data across the transition from the Chukchi Shelf to the Chukchi Borderland as part of the project: Plate Boundaries around the Chukchi Borderland. The goals were to image the transition between these two continental blocks in order to constrain the history and timing of relative motion between them and to establish the time stratigraphy along seismic profiles. The survey collected multichannel seismic reflection data and sonobuoy data. This...

Major and trace element geochemistry of igneous and sedimentary rocks from Lingshan Island, China

Tengfei Zhou, Yaoqi Zhou, Nina Søager, Paul Holm, Hongyu Mu, Zhenkai Zhang, Zhao Liang & Yangjian Gu
This dataset contains whole rock major and trace element geochemistry of 22 igneous and 14 sedimentary samples from Lingshan Island. We also report zircon U-Pb ages for 5 of the 22 igneous samples, measured by LA-ICPMS.

Radiogenic isotope ratios (Sr, Nd, Pb, Hf) of volcanic rocks from the Galapagos Archipelago / Galapagos Islands

Karen Harpp & Dominique Weis
This dataset contains Sr, Nd, Pb, and Hf isotopic ratios of volcanic rocks from the Galapagos Archipelago, selected from across the region to be representative of the geochemical variation in the hotspot system. The goal of the project is twofold: a) to assemble a dataset of radiogenic isotope ratios performed at a high and consistent level of precision; and b) to compare radiogenic isotope ratios with recent Hawaii isotopic signatures (e.g., Weis et al., 2011)....

Sub-bottom Chirp profiler track lines (Shapefile format) from eastern Long Island Sound, 2018

Frank Nitsche
This shapefile shows the track lines of the sub-bottom Chirp profiler data set acquired in eastern Long Island Sound using an EdgeTech Chirp 424 system with a sweep frequency of 4-24kHz. The data set was collected using small boats in April 2018, and lines were run in north-south and east-west directions lines. The sub-bottom surveys were conducted in order to guide subsequent sediment coring. The shapefile is in ESRI SHP format. Funding was provided by...

Three-dimensional P- and S-wave velocity models for Axial Seamount from a joint inversion of earthquake arrival times for velocity and hypocentral parameters

William Wilcock & Christian Baillard
This data set consists of tomographic models of P-wave and S-wave seismic velocities at Axial Seamount obtained by a joint inversion for earthquake locations and velocity structure of input data comprising P-wave and S-wave arrival times for 3894 earthquakes recorded by the Ocean Observatories Initiative Cabled Array at Axial Seamount. The study that obtained these models is described in Baillard et al. (2019). The models are presented in the NonLinLoc format. NonLinLoc is documented in...

Gravity Free-Air Anomaly data (ASCII format), Emperor Seamounts and Hess Rise, R/V Falkor cruise FK190726 (2019, investigators Les Watling, John R. Smith, Fabio C. Tontini)

Les Watling, John Smith & Fabio Tontini
These processed free-air gravity anomaly data files were derived from raw gravity data acquired using a portable Lacoste & Romberg gravimeter with an Ultrasys control system. The data set consists of CSV line-data files of gravity anomalies at a 1 Hz sample rate and processed using POS-MV navigation. Each file contains column headers. The gravity values can be re-calculated or filtered using different techniques: A corresponding PDF document file contains the equations to re-calculate gravity....

Water, major and trace element systematics of mantle xenoliths from Savai‘i and Ta‘ū islands (Samoa)

Aaron Ashley, Michael Bizimis, Anne Peslier, Matthew Jackson & Jasper Konter
Major (by electron microprobe), trace element (by Laser Ablation ICPMS) and structural hydrogen (i.e. “water”; by polarized FTIR) concentrations of nominally anhydrous minerals and spinels from peridotite xenoliths of Savai‘i and Ta‘ū (Samoa). The goal of this data set is to constrain the effects of metasomatism and depletion on water systematics of the oceanic lithosphere.

Volcanic gas emissions along the Colombian Arc Segment of the Northern Volcanic Zone (CAS-NVZ)

Joao Lages, Zoraida Chacón, Viviana Burbano, Luisa Meza, Santiago Arellano, Marco Liuzzo, Gaetano Giudice, Alessandro Aiuppa, Marcello Bitetto & Cristian López
We here report new volcanic MultiGAS ground-based in-situ measurements of SO2, H2S, CO2, air temperature, relative humidity and pressure, and calculated volatile fluxes for Nevado del Ruiz, Galeras and Puracé, located in the Colombian Arc Segment of the Andean Northern Volcanic Zone.

Event Logs from ROV SuBastian Dives conducted during R/V Falkor expedition FK190211 (2019)

Samantha Joye
This data set was acquired with a Schmidt Ocean Institute EventLogger during ROV SuBastian dives on R/V Falkor expedition FK190211 conducted in 2019 (Chief Scientist: Dr. Samantha Joye). These data files are of Text File (ASCII) format and provide documentation of the ROV dive activities. Data were acquired as part of the collaborative research: Microbial carbon cycling and its interactions with sulfur and nitrogen transformations in Guaymas Basin hydrothermal sediments. Ship time was provided by...

Gridded multibeam bathymetry data from the Central Indian Ridge

Rajendra Drolia & Dennis DeMets
These multibeam bathymetry grids were generated from swath data collected in May-July 2001 aboard ORV Sagar Kanya during cruise SK165. This gridded data set was processed and published as part of an US-Indian international collaboration project (investigators Chuck DeMets and R.K. Drolia). The 59-beam Hydrosweep swath sonar system operated at a frequency of 15.5 kHz and produced a cross-track swath that is 70 m to 200 m wide. The cross-track horizontal resolution was about 140...

ROV SuBastian Scientific Computer System (SCS) Data from R/V Falkor expedition FK190106 (2019)

Erik Cordes
This data set was acquired with the ROV SuBastian Scientific Computer System (SCS) during R/V Falkor expedition FK190106 conducted in 2019 (Chief Scientist: Dr. Erik Cordes). These data files are of Text File (ASCII) format and include Vehicle Navigation, Oxygen Sensor, CTD and Temperature probe data that have not been processed. Data were acquired as part of the project: Collaborative research: Quantifying the biological, chemical, and physical linkages between chemosynthetic communities and the surrounding deep...

ROV SuBastian Scientific Computer System (SCS) Data from R/V Falkor expedition FK181210 (2018)

Richard Camilli
This data set was acquired with the ROV SuBastian Scientific Computer System (SCS) during R/V Falkor expedition FK181210 conducted in 2018 (Chief Scientist: Dr. Richard Camilli). These data files are of Text File (ASCII) format and include Vehicle Navigation, Oxygen Sensor, CTD and Temperature probe data that have not been processed.

Magnetic data from the Central Indian Ridge acquired during cruise SK125 (1997)

Rajendra Drolia & Dennis DeMets
These magnetic data files were collected in 1997 aboard ORV Sagar Kanya during cruise SK125. The data set was analyzed and published as part of an US-Indian international collaboration project (investigators Chuck DeMets and R.K. Drolia). The data files are in MGD77 ASCII format and were generated as part of the project called US-India Cooperative Research: A Multibeam Survey of the Equatorial Carlsberg and Central Indian Ridges and Their Fracture Zones, 3N-10S. Funding sources included...

Compilation of Fe chemistry of serpentine minerals

Lisa Mayhew & Eric Ellison
A database of total Fe and Fe oxidation state chemistry of serpentine minerals. This database includes ~1300 individual data points and serpentine mineral geochemical data is paired to bulk rock Fe data whenever possible. The database includes descriptive characteristics of the systems from which the specimens were sampled.

Gridded bathymetry data (GMT netCDF format) for the Discovery Transform Fault and possible nano-plate

Jeffrey McGuire & Monica Wolfson-Schwehr
This multibeam gridded bathymetry data set was collected using an EM300 swath sonar system during R/V Thomas Thompson cruise TN214. The primary goal of the cruise was to deploy 40 ocean bottom seismometers (OBS) and 7 seafloor geodesy tripods at the Quebrada/Discovery/Gofar (QDG) transform fault system on the equatorial East Pacific Rise. There were three target survey areas for high-resolution seafloor mapping: the Discovery and Quebrada transform faults, and a potentially rotating nano-plate just north...

Stable isotopes of calcite-filled veins and Ar-Ar of associated basalts

Yishai Weinstein & Perach Nuriel
This data set contains (1) δ18O and δ13C measurements of vein-filling calcite from the northern segment of the Dead Sea Transform (DST) fault, measured by Isotope Dilution Mass Spectrometry at the Stable Isotopes lab of the University of Queensland; (2) Ar-Ar data of volcanic rocks from the Golan Heights, east of the DST, measured on basalt groundmass at the WiscAr laboratory at the University of Wisconsin-Madison, USA.

Detrital zircon U-Pb geochronology of the Chesterian incised valley filling, Hugoton Embayment, Kansas and two time-equivalent units in northwestern Arkansas

Wei Wang & Tandis Bidgoli
Here we report 1037 new concordant detrital zircon U-Pb ages from nine samples of uppper Mississippian sandstone collected from core in southwestern Kansas and from outcrops in northwestern Arkansas. The sandstones are characterized by major age clusters corresponding to the Grenville (900-1300 Ma) and Taconic-Acadian (350-500 Ma) orogenies and minor older age groups.

Phase Relations of a Depleted Peridotite fluxed by a CO2-H2O fluid

Sriparna Saha & Rajdeep Dasgupta
This data set comprises starting composition, phase assemblage, phase proportions and electron micro-probe analyses for experimental phases published in Saha and Dasgupta (2019). It describes the high pressure (2-4GPa) phase relations for (CO2-H2O) volatile-bearing peridotite system with Mg#92.

Near-Bottom ROV SuBastian Dive Photographs from R/V Falkor expedition FK190211 (2019)

Samantha Joye
This data set was acquired with a Digital Camera on the ROV SuBastian Scientific Computer System (SCS) during R/V Falkor expedition FK190211 conducted in 2019 (Chief Scientist: Dr. Samantha Joye). These data files are of JPEG Image format and include photograph data that have not been processed. Data were acquired as part of the collaborative research: Microbial carbon cycling and its interactions with sulfur and nitrogen transformations in Guaymas Basin hydrothermal sediments. Ship time was...

Processed multi-channel seismic profile images (PNG format) for 0-75 Ma equatorial Atlantic ocean floor acquired in 2015 as part of the TransAtlanticILAB project

Satish Singh & Pranav Audhkhasi
These processed MCS image files are part of a seismic investigation of seafloor, basement and layer 2A for the African plate in the equatorial Atlantic ocean from 0-75 Ma (investigator Satish Singh). The data is cited in Audhkhasi and Singh (2019). The multi-channel seismic data was acquired in individual sequences starting from sequence 1 (eastern most) to sequence 14 (western most) using a 12 km long streamer. Three ridge-orthogonal profiles were acquired, each composed of...

Humic acids and soil organic matter in three forest types in Taiwan

Hsueh-Ching Wang, Guanglong Tian, Chiou-Pin Chen, Ed-Haun Chang, Chiao-Ying Chou, Chyi-Rong Chiou & Chih-Yu Chiu
In this study, we used solid-state 13C NMR spectroscopy, photometric analyses, and chemical fractionation to examine carbon (C) components and lability of SOM in a Japanese cedar (Cryptomeria japonica) forest and bamboo (Phyllostachys edulis) plantation reforested on a cutover primary broadleaf forest in Taiwan

Clumped Isotope Calibration Data from Breitenbach et al. 2018, reprocessed as part of a community calibration effort

Sierra Petersen, Sebastian Breitenbach & David Hodell
Clumped isotope calibration data from 14 published studies were compiled and reprocessed from the base level (raw voltages or small delta values) using updated IUPAC parameters defining the composition of international standards (VPDB, VSMOW) and 17O fractionation, updated theoretical equilibrium values, and newly calculated acid digestion fractionation (AFF) corrections. This EarthChem dataset archives all reprocessed data originally from Breitenbach et al. (2018, GCA), presented in the synthesis publication.

Acoustic backscatter gridded data for the Lido inlet, Venice Lagoon, (2011 survey)

Nicola Pizzeghello
This high-resolution (0.5m resolution) gridded backscatter data set was collected during September and October 2011 in the Lido inlet (Venice Lagoon) using a Kongsberg Simrad EM 3002 MBES system. The operational frequency for this survey was set at 300 kHz. A Kongsberg Seatex Seapath 300 positioning system, with NRTK correction for the first part of the survey and with OMNISTAR Land corrections for the second part of the survey, was used for ship positioning. The...

Navigation data from the Shatsky Rise and Hawaiian Seamounts acquired during R/V Thomas G. Thompson expedition TN037 (1994)

William Sager & Adam Klaus
This data set was acquired with a Navigation System during R/V Thomas G. Thompson expedition TN037 conducted in 1994 (Investigators: William Sager and Adam Klaus). The data file is in Text File (ASCII) format. Data were acquired as part of the project: Site Survey and Geophysical Study of the Origin and Evolution of Shatsky Rise. Funding was provided by NSF award: OCE93-14229.

Melt inclusions and host olivine of Archean komatiites

Alexander Sobolev, Evgeny Asafov, Andrey Gurenko, Nicholas Arndt, Valentina Batanova, Maxim Portnyagin, Dieter Garbe-Schönberg, Allan Wilson & Gary Byerly
Major, trace elements, H2O contents and hydrogen isotopes composition of melt inclusions and compositions of host olivine phenocrysts from komatiites of Barberton (3.3 Gyr), Belingwe (2.7 Gyr) and Abitibi (2.7 Gyr) greenstone belts. Using hydrogen isotopes, we show that the mantle sources of these melts contained excess H2O which implies that a deep mantle hydrated reservoir has been present in the Earth's interior at least since the Paleoarchean. The reconstructed initial hydrogen isotope composition of...

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