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facies

N. The appearance or facial expression of an individual. It is used to describe a facial expression suggestive, diagnostic, or indicative of a specific diagnosis or condition. ...

facies

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A Dictionary of Plant Sciences (4 ed.)

Reference type:
Subject Reference
Current Version:
2019
Subject:
Science and technology, Life Sciences
Length:
4 words

... Aspect or...

facies

facies   Reference library

The Oxford Companion to the Earth

Reference type:
Subject Reference
Current Version:
2003

...(for example, ‘sandy facies’, ‘graptolitic facies’), or by a genetic term (for example, ‘deltaic facies’, ‘pelagic facies’, etc.). The usage is also extended to cover associations and packets of rock units rather than single strata. Several meanings have been attached to the word ‘facies’. It may refer to the petrology of a sediment: petrofacies e.g. quartz sandstone petrofacies; or it may refer to the lithology of the deposit: lithofacies , e.g. cross-bedded sandstone facies; to the inferred mode of deposition: e.g. aeolian facies ; to the included...

facies

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A Dictionary of Geology and Earth Sciences (5 ed.)

Reference type:
Subject Reference
Current Version:
2020

... 1. Sum total of features that reflect the specific environmental conditions under which a given rock was formed or deposited. The features may be lithologic, sedimentological, or faunal. In a sedimentary facies, mineral composition, sedimentary structures , and bedding characteristics are all diagnostic of a specific rock or lithofacies. 2. See metamorphic facies...

facies

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World Encyclopedia

Reference type:
Subject Reference
Current Version:
2004
Subject:
Encyclopedias
Length:
33 words

... In geology, all the features of a rock or that show the history of its formation. Geologists often distinguish age by facies. The term is also applied to gradations of igneous rock...

facies

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A Dictionary of Geography (5 ed.)

Reference type:
Subject Reference
Current Version:
2015

... The characteristics of a rock, such as fossil content, or chemical composition, which distinguish it from other formations and give some indication of its formation. Torsvik et al. (2004) J. Geol. Soc. 161, 4 present a facies review of Earth geography from 400 to 250...

facies

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A Dictionary of Dentistry

Reference type:
Subject Reference
Current Version:
2010
Subject:
Medicine and health, Dentistry
Length:
28 words

... n. The appearance or facial expression of an individual. It is used to describe a facial expression suggestive, diagnostic, or indicative of a specific diagnosis or...

facies

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Concise Medical Dictionary (10 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Medicine and health, Clinical Medicine
Length:
67 words

... n. 1. facial expression, often a guide to a patient’s state of health as well as emotions. The typical facies seen in a patient with enlarged adenoids is a vacant look, with the mouth drooping open. A Hippocratic facies is the sallow face, sagging and with listless staring eyes, that indicates approaching death. 2. (in anatomy) a specified surface of a bone or other body...

facies

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A Dictionary of Nursing (7 ed.)

Reference type:
Subject Reference
Current Version:
2017
Subject:
Medicine and health
Length:
53 words

...facies [ fay -shi-eez] n. facial expression, often a guide to a patient’s state of health as well as his emotions. adenoid f. a vacant look, with the mouth drooping open, seen in a patient with enlarged adenoids. Hippocratic f. the sallow face, sagging and with listless staring eyes, that indicates approaching death....

facies

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The Concise Oxford Dictionary of Archaeology (2 ed.)

Reference type:
Subject Reference
Current Version:
2009
Subject:
Archaeology, History
Length:
53 words

... [Ge] A part of a bigger unit or style that can be distinguished in some way on the basis of appearance or composition. Although the term was originally developed in the field of geology, it has increasing application in archaeology with reference to chronological or regional variants of bigger traditions or...

facies

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A Dictionary of Ecology (5 ed.)

Reference type:
Subject Reference
Current Version:
2015

... 1 Aspect or appearance. 2 The sum total of the features that reflect the specific environmental conditions under which a given rock was formed or deposited....

facies

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A Dictionary of Environment and Conservation (3 ed.)

Reference type:
Subject Reference
Current Version:
2017

... The characteristics of a sediment or sedimentary rock unit, such as mineralogy , colour, texture , and fossil content, which are indicative of the conditions when the rock...

facies

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A Dictionary of Public Health (2 ed.)

Reference type:
Subject Reference
Current Version:
2018

...facies The facial appearance and/or expression. The word is used in the context of the facial appearance or expression typical of specific diseases, such as the protuberant staring eyes and anxious expression often associated with hyperthyroidism. ...

facies association

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A Dictionary of Geology and Earth Sciences (5 ed.)

Reference type:
Subject Reference
Current Version:
2020

... association A group of sedimentary facies used to define a particular sedimentary environment. For example, all the facies found in a fluviatile environment may be grouped together to define a fluvial facies...

facies sequence

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A Dictionary of Geology and Earth Sciences (5 ed.)

Reference type:
Subject Reference
Current Version:
2020

... sequence A vertical succession of facies ; such sequences often fine or coarsen upwards, and may be repeated many times in a cyclic manner due to the migration of the facies through time and...

facies fossils

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A Dictionary of Geology and Earth Sciences (5 ed.)

Reference type:
Subject Reference
Current Version:
2020

... fossils Fossil organisms that are restricted to particular lithologies , reflecting the original environments of...

groundwater facies

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A Dictionary of Geology and Earth Sciences (5 ed.)

Reference type:
Subject Reference
Current Version:
2020

...facies A groundwater of particular character and chemistry. The concept of hydrochemical facies is based on the assumption that the chemical composition of groundwater at any point reflects a tendency towards chemical equilibrium with the matrix rocks under the prevailing conditions. See chebotarev sequence...

metamorphic facies

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A Dictionary of Geology and Earth Sciences (5 ed.)

Reference type:
Subject Reference
Current Version:
2020

...metamorphic facies . Any change in the mineral assemblage observed in a particular rock composition represents a mineralogical response to changing metamorphic conditions and thus would define a new facies. The metamorphic conditions represented by a particular facies can be deduced from experimental studies of the overlapping pressure–temperature stability fields of mineral assemblages in that facies. However, the definition of a facies is purely descriptive and based entirely on the mineral assemblages observed. The concept of metamorphic facies was first...

eclogite facies

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A Dictionary of Geology and Earth Sciences (5 ed.)

Reference type:
Subject Reference
Current Version:
2020

...facies A set of metamorphic mineral assemblages produced by metamorphism of basic igneous rocks under high-pressure, moderate-temperature conditions and typically characterized by the development of the mineral assemblage pyrope garnet and omphacite (an Na-rich, high-pressure pyroxene ). Other rocks of contrasting composition, e.g. shales or limestones , are not known to show mineral assemblages characteristic of the high pressures and moderate temperatures involved. Eclogite facies can form when a slab of oceanic crust is subducted ...

amphibolite facies

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A Dictionary of Geology and Earth Sciences (5 ed.)

Reference type:
Subject Reference
Current Version:
2020

...facies A set of metamorphic mineral assemblages produced by the metamorphism of a wide range of starting rock types under the same metamorphic conditions and typically characterized by the development of the mineral assemblage andesine ( plagioclase )– hornblende in rocks of basic igneous composition. Other rocks of contrasting composition, e.g. shales or limestones , would each develop their own specific mineral assemblage, even though they are all being metamorphosed under the same conditions. The variation of mineral assemblage with...

granulite facies

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A Dictionary of Geology and Earth Sciences (5 ed.)

Reference type:
Subject Reference
Current Version:
2020

...facies A set of metamorphic mineral assemblages produced by metamorphism of a wide range of starting rock types under the same metamorphic conditions and typically characterized by the development, in rocks of basic igneous composition, of the mineral assemblage clinopyroxene – plagioclase – orthopyroxene – quartz . Other rocks of contrasting composition, for instance shales or limestones , would each develop their own specific mineral assemblage, even though they were all being metamorphosed under the same conditions. The variation of...

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