glacial

glacial

A long period of time during which earth's climate cools, causing glaciers to expand out from the poles and mountains covering vast areas. The glacials of the Pleistocene Epoch mostly occurred in the northern hemisphere. See interglacial.

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Part of Speech: noun
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Industry/Domain: Anthropology
Category: Physical anthropology
Company: Palomar College
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Related terms

era glacial

Geography; Physical geography

Véase glacial.

movimiento glacial

Geography; Physical geography

Dos tipos:

deriva glacial

Geography; Physical geography

Término genérico para referirse a todos los depósitos glaciales y fluvioglaciales.

enfermedad endémica

Anthropology; Physical anthropology

A disease that remains at a more or less constant frequency of affected individuals in a population all of the time. Examples: hypertension, tooth decay, and malaria.

polimorfismo

Anthropology; Physical anthropology

A genetic trait controlled by more than one allele, each of which has a frequency of 1% or greater in the population gene pool. See balanced polymorphism.

termoluminiscencia (TL)

Anthropology; Physical anthropology

A radiometric dating method based on the fact that trace amounts of radioactive atoms, such as uranium and thorium, in some kinds of rock, soil, and clay produce constant low ...

modelo de asimilación

Anthropology; Physical anthropology

A hypothesis to explain the origin of modern Homo sapiens. It proposes that the first modern humans evolved in Africa, but when they migrated into other regions they did not ...

potasio-argón

Anthropology; Physical anthropology

A radiometric dating method based on the fact that potassium-40 in volcanic rock decays into argon-40 and calcium-40 at a known rate. The half-life of potassium-40 is ...

pedernal

Anthropology; Physical anthropology

A kind of hard, rock with a glassy opaque appearance. It was a favorite raw material for many prehistoric humans for the manufacture of tools such as knives and scraping ...

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Industry/Domain: Aerospace Category: Space flight

transbordador espacial

Nave espacial reutilizable con alas desarrollado por la Administración Nacional de Aeronáutica y del Espacio de Estados Unidos (NASA) para misiones de ...