Sediment coring and analysis

Knowledge graph centered on Sediment coring and analysis with 67 nodes and 131 connections. Top connected: Crested Butte, East River, Geochemical exports to river from the intra-meande, Organic matter decomposition, groundwater hydrology.

Method synopsis

Collection of sediment cores using slide hammer or bucket auger, followed by sieving, grinding, and geochemical analysis including iron oxide extraction.

Synthesized from method descriptions across 1 paper using this protocol.

Procedure from a recent peer-reviewed implementation

Steps below were extracted from the most recent peer-reviewed implementation of this protocol in the corpus — Geochemical exports to river from the intra-meander hyporheic zone under transient hydrologic conditions: East River Mountainous Watershed, Colorado (2018), Water Resources Research. Implementations in other papers (listed below) may differ.

1. Collect sediment samples
   Sediments were collected within 60 cm of each MCP piezometer at approximately 15-cm depth intervals using either a 2-inch (5-cm) diameter slide hammer corer or bucket auger. Sediments were sealed into Mylar bags with oxygen absorbers and stored at 4°C.
   Quantities: Samples collected within 60 cm of each of 5 piezometers, at 15-cm depth intervalsDuration: At the end of each sampling dayConditions: Field moist conditions, stored at 4°C
   Equipment: 2-inch (5-cm) diameter slide hammer corer, bucket auger, Mylar bags, oxygen absorbers
2. Process sediment samples
   Samples were homogenized and sieved through a 2-mm sieve under field moist conditions. A subsample of the <2-mm fraction was air-dried at room temperature and ball-milled using tungsten-carbide balls to a fine powder. Total free iron oxide content was determined by extracting finely ground sediment with 0.3 M sodium citrate, 0.1 M sodium bicarbonate, and sodium dithionite at 80°C on duplicate samples.
   Quantities: <2-mm fraction processed, duplicate samples for iron oxide analysisDuration: Not specifiedConditions: Field moist conditions for sieving, room temperature for air-drying, 80°C for iron extraction
   Equipment: 2-mm sieve, tungsten-carbide balls, ball mill

Typical Equipment

• 2-inch (5-cm) diameter slide hammer corer
• bucket auger
• 2-mm sieve
• tungsten-carbide balls

Output Measurements

• total carbon
• total inorganic carbon
• free iron oxide content
• sediment properties

Papers Using This Protocol (1)

Places Where Used