gyttja


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gyttja

[′yi‚ch+ä]
(geology)
A fresh-water anaerobic mud containing an abundance of organic matter; capable of supporting aerobic life.
References in periodicals archive ?
BC Sample Depth below Material of sample description surface (m) P-2/[d.sub.3] 1.60-1.64 Peat P-2/[d.sub.2] 1.26-1.30 Peat P-2/[d.sub.1] 1.10-1.14 Peat J-3 1.05-1.10 Charcoal J-3/o-1 2.08-2.18 Detritus gyttja (a)) Oxford program OxCal v4.2.4 Bronk Ramsey and Lee (2013).
Lake sediments from the Eemian Interglacial occur in the basement of the Raszynka valley; they represent sediments of a landlocked basin filled with gyttja. These sediments were covered by Holocene peats, aggradate muds and fluvial sands.
The highest percentage of As anomalies is in gyttja layer (41.7% of its samples), it is followed by silt (22.2%); the same lithological units are even more abundant in Mo anomalies: 100 and 97.2%, respectively (Fig.
Karaca A, Turgay O, Tamer N (2006) Effects of a humic deposit (gyttja) on soil chemical and microbiological properties and heavy metal availability.
The analysed sediments consisted of brownish gyttja of high organic matter content (loss-of-ignition (LOI) 60-86%) and high porosity (95-98% of water).
In buried conditions patches of peat and gyttja were sealed and preserved up to the present, offering material for radiocarbon dating.
Stratigraphy: Characteristic of limnic sediments, in silt, clay, gyttja, and marl.
Surficial organic deposits are not common on the Ohio till plain; however, three houses in the north Columbus neighborhood of Sharon Woods had to be leveled owing to structural damage from sinking into peat and gyttja. We investigated the factors that contributed to the damage, which developed after nearly 15 to 30 years of stability.
Basal sediments of the cores were inorganic clays or sand and gravel; after the transition to organic sediments at [approximately]10 000 yr BP the sediment changed to fine-detritus gyttja and varied little through the remaining length of the cores.
At most of these sites there is a sharp contact between gyttja and silt or clay at the base of the Younger Dryas, whereas the transition from silt or clay to gyttja near the end of the Younger Dryas spans several centimetres.