1. Coastal and Marine Hazards and Resources
  2. Geoscience Data System
  3. Dataset 41299

Dataset description: Geochemistry of sediment and organic matter in drainages burned by the Altas and Nuns wildfires in October 2017 and of nearshore seabed sediment in north San Francisco Bay from March to April 2018

Fine-grained sediment was collected from the banks of Napa River, Sonoma Creek, and tributaries in March 2018 and from shallow nearshore areas of the northern reach of San Francisco Bay in April 2018. Bulk sediment was dated using activities of short-lived cosmogenic radionuclides (beryllium-7, cesium-137, and lead-210). Contents of potentially toxic metals and source-rock-indicative elements, including rare earth elements, were quantified in the fine fraction of sediment (particles less than 0.063 mm diameter). Ratios of stable carbon-13/carbon-12 isotopes and total carbon to total nitrogen were determined in sedimentary organic matter.
Version1
Keywordsrocks and deposits, toxic trace element contamination, rare earth elements, fires, geochemistry, isotopic analysis, mass spectroscopy
Data typesGeology, Chemistry
Formatcomma-delimited text
Amount0.01 MB

Contacts

Contact
Renee K Takesue
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Location of materials and files

Public files
Metadatahttps://cmgds.marine.usgs.gov/metadata/pcmsc/DataReleases/ScienceBase/DR_P9VDTDSC/SanFranciscoNorthBayWildfireStreamNearshoreSedimentGeochemistry2018_metadata.xml
Outline - Questions and answers - Text - XML

Activities and equipment

ActivityEquipment
2018-623-FAHand-grab sample
no sampling device used
2018-624-FAPonar grab sampler