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Climate: Past, Present & Future

Paleoclimate

LOESS IN TRANSLATION

LOESS IN TRANSLATION

Loess is a mineral, aeolian deposit with a range of definitions in literature, which class it as either a sediment, soil, or rock. Some classic texts suggest that “loess is not just the accumulation of dust” [1], and it must include additional processes such as loessification, calcification, pedogenesis, and in-situ weathering. The definition adopted depends on the scientific background and the qu ...[Read More]

Desert loess: formation, distribution, geoscientific value

Desert loess: formation, distribution, geoscientific value

Loess is an aeolian (wind-driven) silty sediment covering over 10% of the Earth’s land surface; it occurs predominantly in the mid-latitudes. On a global scale, loess is among the most widespread unconsolidated sediments, and of crucial importance for agricultural regions where loess deposits are known to form fertile soils because of its ability to store water and retain nutrients. Loess is compr ...[Read More]

Magnetic minerals: storytellers of environmental and climatic conditions

Magnetic minerals: storytellers of environmental and climatic conditions

Name of proxy Environmental Magnetism (also known as enviromagnetics) Type of record Environment and climate proxy Paleoenvironment Sedimentary environments (for the most part) Period of time investigated Present times to millions of years (depending on the preservation conditions) How does it work? Magnetism is a physical property that results from the behaviour of elementary particles in any sub ...[Read More]

How glowing sediment can help to decipher the Earth’s past climate !

How glowing sediment can help to decipher the Earth’s past climate !

The last 2.5 Million years of the Earth’s history (termed Quaternary) are characterised by climatic cycles oscillating between warm (interglacial) and cold (glacial) periods. To be able to fully understand and interpret past climate variations the development of accurate and precise chronological techniques is crucial. Optically stimulated luminescence (OSL) dating is a strong geochronological too ...[Read More]