Sedimentation rates were not inferred from cores P5 and P6 due to distortions by slumping.Measurements were made on bulk sediment without authigenic carbonate phases, and thus the majority of carbon in the samples is organic carbon produced by primary producers.Samples were then rinsed with Milli-Q water 6 to 8 times to remove the acetic acid.Acidified samples were then freeze-dried again, re-homogenized and stored for ¹⁴C and ¹³C analysis. The d¹³C values of all the acidified samples used for radiocarbon analyses were approximately -20 to -22‰, as expected from marine (primary producers) derived organic matter.In Guaymas, private industry, government and the public schools are busy partnering to prepare students with the skills required to be able to benefit from future investment in the sector in the form of skilled and good paying jobs.Students in the area have the opportunity participate in courses in Applied Mathematics, Metrology and basic CNC machining skills.
Since 2011, there has been a vacuum heat-treatment facility in Empalme at The Offshore Group’s Bella Vista Industrial Park.
Gravity coring and microbial community analysis will target cold non-hydrothermal sediments as well as off-axis hydrothermally-influenced sediments.
The gravity coring campaign and the geochemistry/microbiology studies are coordinated with heatflow measurements and extensive 2D seismic analysis and high-resolution 3D seismic mapping by other planned Mexican and German cruises.
Sediment cores were obtained by Piston coring (using commercial PVC core liners) onboard R/V El Puma.
The sediment cores were recovered during the RV El Puma cruise in October 2014.
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Samples selected for radiocarbon analyses were freeze-dried, homogenized, and acidified to remove Ca CO₃, allowing for the analysis of remaining organic matter, and preventing the distortion of radiocarbon ages by methane-derived carbonates.