Isabela M. Cordeiro de Sousa
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View article: Sub-precessional pacing of ice conditions and organic carbon burial in the Ross Sea, Antarctica, during the mid-Pliocene Warm Period
Sub-precessional pacing of ice conditions and organic carbon burial in the Ross Sea, Antarctica, during the mid-Pliocene Warm Period Open
For over 200 ka during the mid-Pliocene Warm Period (mPWP), sustained high atmospheric pCO₂ (> 350 ppm) maintained global temperatures above pre-industrial levels. Nonetheless, as documented here, ice growth pulses occurred during this int…
View article: Cold spells over Greenland during the mid-Pliocene Warm Period
Cold spells over Greenland during the mid-Pliocene Warm Period Open
View article: Cold spells over Greenland during the mid-Pliocene Warm Period
Cold spells over Greenland during the mid-Pliocene Warm Period Open
The fate of the Greenland Ice Sheet (GIS) under global warming stress is still unascertained. From this viewpoint, GIS conditions during the mid-Pliocene Warm Period (mPWP; 3.264-3.025 Ma), an interval often referred to as a close analogue…
View article: Climate-controlled submarine landslides on the Antarctic continental margin
Climate-controlled submarine landslides on the Antarctic continental margin Open
Antarctica’s continental margins pose an unknown submarine landslide-generated tsunami risk to Southern Hemisphere populations and infrastructure. Understanding the factors driving slope failure is essential to assessing future geohazards.…
View article: Radiogenic isotope evidence for cold spells in southern Greenland during the warm mid-Pliocene
Radiogenic isotope evidence for cold spells in southern Greenland during the warm mid-Pliocene Open
The warm mid-Pliocene (3.25-3.05Ma) was the last time when Earth was warmer for a period longer than any Quaternary interglacial.According to recent studies, it was characterized by an atmospheric pCO 2 concentration close to 400 ppV and a…
View article: IODP Expedition 374, Hole U1523D - Well Logging Data
IODP Expedition 374, Hole U1523D - Well Logging Data Open
Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, …
View article: IODP Expedition 374, Hole U1521A - Well Logging Data
IODP Expedition 374, Hole U1521A - Well Logging Data Open
Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, …
View article: IODP Expedition 374, Hole U1523D - Well Logging Data
IODP Expedition 374, Hole U1523D - Well Logging Data Open
Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, …
View article: IODP Expedition 374, Hole U1521A - Well Logging Data
IODP Expedition 374, Hole U1521A - Well Logging Data Open
Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, …
View article: IODP Expedition 374, Hole U1522A - Well Logging Data
IODP Expedition 374, Hole U1522A - Well Logging Data Open
Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, …
View article: IODP Expedition 374, Hole U1522A - Well Logging Data
IODP Expedition 374, Hole U1522A - Well Logging Data Open
Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, …
View article: Mineralogy and chemical composition of ferromanganese crusts from the Cruzeiro do Sul Lineament - Rio Grande Rise, South Atlantic
Mineralogy and chemical composition of ferromanganese crusts from the Cruzeiro do Sul Lineament - Rio Grande Rise, South Atlantic Open
View article: Nova fronteira no uso de traçadores isotópicos para materiais e seres vivos: o uso de isótopos radiogênicos e não tradicionais
Nova fronteira no uso de traçadores isotópicos para materiais e seres vivos: o uso de isótopos radiogênicos e não tradicionais Open
View article: IODP Expedition 374 Core orientation
IODP Expedition 374 Core orientation Open
Core orientation data were measured downhole during advanced piston corer (APC) coring, either by Minex FlexIT or Icefield MI-5 core orientation tool. These tools measure magnetic strength and orientation, 3-axis accelerometer data, and to…
View article: IODP Expedition 374 Section-half images
IODP Expedition 374 Section-half images Open
Digital section images were taken of the flat face of split cores on the Section Half Imaging Logger (SHIL) using a linescan camera at a resolution of 20 lines/mm (50 micron pixels). Cores were imaged as soon as possible after splitting to…
View article: IODP Expedition 374 Inorganic carbon (coulometer)
IODP Expedition 374 Inorganic carbon (coulometer) Open
Inorganic carbon (carbonate) is determined by coulometry, which uses a photodetection cell to measure carbon dioxide evolved during sample acidification. Report includes percent inorganic carbon and calcium carbonate.
View article: IODP Expedition 374 Scanning electron microscope images
IODP Expedition 374 Scanning electron microscope images Open
Microscopic images of discrete samples were acquired using a scanning electron microscope (SEM) and captured as image files. These files were uploaded along with a brief description and a record of the microscopic conditions when the image…
View article: IODP Expedition 374 Natural gamma radiation
IODP Expedition 374 Natural gamma radiation Open
Natural gamma radiation (NGR) data in the ~0.1 to 3.0 MeV range were measured using eight custom-designed sodium iodide (thallium) [NaI(Tl)] detectors arranged along the core measurement axis at 20 cm intervals. The NGR system uses layers …
View article: IODP Expedition 374 Salinity
IODP Expedition 374 Salinity Open
Salinity was measured on interstitial water (IW) samples using an optical refractometer.
View article: IODP Expedition 374 Core summary
IODP Expedition 374 Core summary Open
Report includes detailed core data: drilling and coring depths, advancement, recovered core length measured on the catwalk and final curated length, core recovery, and sections cut.
View article: IODP Expedition 374 Magnetic susceptibility (point or contact system)
IODP Expedition 374 Magnetic susceptibility (point or contact system) Open
Magnetic susceptibility was measured on section halves on the Section Half Multisensor Logger (SHMSL) using a Bartington MS2 meter and either a MS2E or MS2K probe. Because all JRSO cores meet minimum size requirements for these two probes,…
View article: IODP Expedition 374 Thermal conductivity
IODP Expedition 374 Thermal conductivity Open
Thermal conductivity was measured using the heated needle method in either full-space needle configuration (soft/saturated sediments) or half-space needle configuration (harder materials) of a TeKa Berlin TK-04 thermal conductivity meter. …
View article: IODP Expedition 374 ICP-AES elemental analysis (interstitial water)
IODP Expedition 374 ICP-AES elemental analysis (interstitial water) Open
Elemental concentration in interstitial water samples was measured by inductively coupled plasma - atomic emission spectroscopy (ICP-AES). Data are presented by element-wavelength pair (e.g., more than one calcium line may be reported). El…
View article: IODP Expedition 374 Magnetic susceptibility (KappaBridge)
IODP Expedition 374 Magnetic susceptibility (KappaBridge) Open
Bulk magnetic susceptibility and anisotropy of magnetic susceptibility (AMS) were measured on discrete samples using an Agico KLY-4 KappaBridge susceptibility meter. Report includes individual and average principal susceptibilities, inclin…
View article: IODP Expedition 374 P-wave velocity caliper (section/discrete)
IODP Expedition 374 P-wave velocity caliper (section/discrete) Open
P-wave velocity data were measured on undisturbed section halves (JRSO-defined x-axis) and/or discrete cube and cylinder samples (x, y, or z-axis) using pairs of piezoelectric transducers mounted on a caliper system. Report includes P-wave…
View article: IODP Expedition 374 Micropaleontology
IODP Expedition 374 Micropaleontology Open
Paleontological data were collected using microscopes and recorded in the JRSO description software. All data for a species group (e.g., diatoms or nannofossils) were collected in a Microsoft Excel worksheet by hole. A zip file of the enti…
View article: IODP Expedition 374 Bulk Density (GRA)
IODP Expedition 374 Bulk Density (GRA) Open
Gamma ray attenuation (GRA) data were acquired using a Cs-137 collimated source and a sodium iodide (thallium), or NaI(Tl), scintillation detector. The signal was calibrated using water and aluminum standards to provide a proxy for bulk de…
View article: IODP Expedition 374 Gas safety report
IODP Expedition 374 Gas safety report Open
This composite report returns data from two different gas chromatograph configurations (GC3 and NGA). Each row combines data from several measurements made on the same sample at the same time for a particular headspace or vacutainer sample…
View article: IODP Expedition 374 Photomicrographs
IODP Expedition 374 Photomicrographs Open
Microscopic images of discrete samples were acquired using stereo and upright light microscopes and captured on digital cameras. Image files were uploaded along with a brief description and a record of the microscopic and lighting conditio…
View article: IODP Expedition 374 Section-half images
IODP Expedition 374 Section-half images Open
Digital section images were taken of the flat face of split cores on the Section Half Imaging Logger (SHIL) using a linescan camera at a resolution of 20 lines/mm (50 micron pixels). Cores were imaged as soon as possible after splitting to…