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Lichenometry

Index Lichenometry

In archaeology, palaeontology, and geomorphology, lichenometry is a geomorphic method of geochronologic dating that uses lichen growth to determine the age of exposed rock, based on a presumed specific rate of increase in radial size over time. [1]

24 relations: Alps, American Antiquity, Archaeology, Climate change, Diameter, Geochronology, Geografiska Annaler, Geomorphology, Glacial period, Knut Fægri, Lichen, Moraine, Paleontology, Permafrost, Retreat of glaciers since 1850, Rhizocarpon, Rhizocarpon geographicum, Roland Beschel, Scree, Surface exposure dating, Thallus, Trim line, Tundra, Xanthoria.

Alps

The Alps (Alpes; Alpen; Alpi; Alps; Alpe) are the highest and most extensive mountain range system that lies entirely in Europe,The Caucasus Mountains are higher, and the Urals longer, but both lie partly in Asia.

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American Antiquity

The professional journal American Antiquity is published by the Society for American Archaeology, the largest organization of professional archaeologists of the Americas in the world.

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Archaeology

Archaeology, or archeology, is the study of humanactivity through the recovery and analysis of material culture.

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Climate change

Climate change is a change in the statistical distribution of weather patterns when that change lasts for an extended period of time (i.e., decades to millions of years).

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Diameter

In geometry, a diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circle.

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Geochronology

Geochronology is the science of determining the age of rocks, fossils, and sediments using signatures inherent in the rocks themselves.

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Geografiska Annaler

Geografiska Annaler is a scientific journal published by the Swedish Society for Anthropology and Geography.

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Geomorphology

Geomorphology (from Ancient Greek: γῆ, gê, "earth"; μορφή, morphḗ, "form"; and λόγος, lógos, "study") is the scientific study of the origin and evolution of topographic and bathymetric features created by physical, chemical or biological processes operating at or near the Earth's surface.

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Glacial period

A glacial period (alternatively glacial or glaciation) is an interval of time (thousands of years) within an ice age that is marked by colder temperatures and glacier advances.

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Knut Fægri

Knut Fægri (17 July 1909 – 10 December 2001) was a Norwegian botanist and palaeoecologist.

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Lichen

A lichen is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi in a symbiotic relationship.

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Moraine

A moraine is any glacially formed accumulation of unconsolidated glacial debris (regolith and rock) that occurs in both currently and formerly glaciated regions on Earth (i.e. a past glacial maximum), through geomorphological processes.

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Paleontology

Paleontology or palaeontology is the scientific study of life that existed prior to, and sometimes including, the start of the Holocene Epoch (roughly 11,700 years before present).

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Permafrost

In geology, permafrost is ground, including rock or (cryotic) soil, at or below the freezing point of water for two or more years.

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Retreat of glaciers since 1850

The retreat of glaciers since 1850 affects the availability of fresh water for irrigation and domestic use, mountain recreation, animals and plants that depend on glacier-melt, and, in the longer term, the level of the oceans.

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Rhizocarpon

Rhizocarpon is a genus of lichenized fungi in the family Rhizocarpaceae.

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Rhizocarpon geographicum

Rhizocarpon geographicum (the map lichen) is a species of lichen, which grows on rocks in mountainous areas of low air pollution.

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Roland Beschel

Roland Ernst Beschel (9 August 1928, Salzburg, Austria – 22 January 1971, Kingston, Ontario) was an Austrian botanist, lichenologist, professor, and herbarium director, known for his famous doctoral thesis and subsequent research on lichenometry.

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Scree

Scree is a collection of broken rock fragments at the base of crags, mountain cliffs, volcanoes or valley shoulders that has accumulated through periodic rockfall from adjacent cliff faces.

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Surface exposure dating

Surface exposure dating is a collection of geochronological techniques for estimating the length of time that a rock has been exposed at or near Earth's surface.

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Thallus

Thallus (plural: thalli), from Latinized Greek θαλλός (thallos), meaning "a green shoot" or "twig", is the undifferentiated vegetative tissue of some organisms in diverse groups such as algae, fungi, some liverworts, lichens, and the Myxogastria.

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Trim line

A trim line, also written as trimline, is a clear line on the side of a valley formed by a glacier.

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Tundra

In physical geography, tundra is a type of biome where the tree growth is hindered by low temperatures and short growing seasons.

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Xanthoria

Xanthoria is a genus of lichenized fungi in the family Teloschistaceae.

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Lichenometric dating.

References

[1] https://en.wikipedia.org/wiki/Lichenometry

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