Major and trace elements in snow and ice from Deming Lake, MN, USA (2022-2023) ...

• Main Authors: Rico, Kathryn, Ostrander, Chadlin, Heard, Andrew, Swanner, Elizabeth
• Format: Dataset
• Language: unknown
• Published: PANGAEA 2024
• Subjects: lake; Lake sediment; lake water; Precambrian analog; snow-ice; trace elements; Event label; LATITUDE; LONGITUDE; Lake, water depth; DEPTH, ice/snow; Depth, ice/snow, top/minimum; Depth, ice/snow, bottom/maximum; DATE/TIME; Lithium; Magnesium; Aluminium; Phosphorus; Calcium; Scandium; Titanium; Vanadium; Chromium; Manganese; Iron; Cobalt; Nickel; Copper; Zinc; Strontium; Yttrium; Molybdenum; Cadmium; Barium; Lanthanum; Cerium; Praseodymium; Neodymium; Samarium; Europium; Gadolinium; Terbium; Dysprosium; Holmium; Erbium; Thulium; Ytterbium; Lutetium; Thallium; Lead; ice core
• Online Access: https://dx.doi.org/10.1594/pangaea.971079; https://doi.pangaea.de/10.1594/PANGAEA.971079

A core of ice from the center of the lake was obtained in March 2023 using a Kovacs Mark V coring system. The core barrel extracts a 14 cm diameter ice core and returned a ~40 cm-long ice core topped with ~5 cm of snow cover. This core was transported back to the field station in a clean plastic bag. Visual examination of the core revealed the presence of 3 layers: a ~5 cm unconsolidated snow layer at the top; a ~20 cm opaque layer identified as deriving from snow and referred to hereafter as 'snow ice'; and a ~20 cm transparent layer identified as frozen lake water or 'lake ice'. The outer layer of the ice core was washed liberally with methanol and Milli-Q water prior to sampling, and all samples from the ice core specifically avoided the outer surface of the core that was in direct contact with the coring system. Five discrete sample layers, one from the unconsolidated snow and two each from the snow ice and lake ice, were collected from this core by manual separation with a ceramic chisel. These ...