Video Experimental Relacionado

Updated: Oct 17, 2025

Simulation of the Planetary Interior Differentiation Processes in the Laboratory

Simulation of the Planetary Interior Differentiation Processes in the Laboratory

Published on: November 15, 2013

Edad y composición de los basaltos jóvenes en la Luna, medidos a partir de muestras devueltas por Chang'e-5

Xiaochao Che¹, Alexander Nemchin^1,2, Dunyi Liu^1,3

¹The Beijing SHRIMP Center, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China.

Science (New York, N.Y.)

|October 7, 2021

Resumen

Los jóvenes basaltos lunares de Oceanus Procellarum, fechados hace 1.96 mil millones de años, ofrecen nuevos conocimientos sobre la evolución térmica de la Luna y la historia de los impactos. El análisis no revela ninguna fuente de manto profundo para estas erupciones volcánicas de última etapa.

Área de la Ciencia:

Geología y geoquímica lunares
Ciencias planetarias
Cronología y evolución térmica de los cuerpos terrestres

Sus antecedentes:

Los datos orbitales recientes identificaron unidades volcánicas jóvenes, específicamente lavas de basalto, en Oceanus Procellarum en la Luna.
Esta región se caracteriza por concentraciones elevadas de elementos productores de calor como el potasio, el torio y el uranio.
La misión Chang'e-5 recogió con éxito muestras de estos jóvenes basaltos lunares para su análisis en el laboratorio terrestre.

Objetivo del estudio:

Para determinar la edad exacta de las unidades volcánicas más jóvenes de la Luna.
Para analizar las composiciones químicas y mineralógicas de estas muestras de basalto lunar.
Para restringir la cronología del impacto lunar y entender la evolución térmica de la Luna.

Principales métodos:

Datación radiométrica de las muestras de basalto lunar devueltas.
Análisis químico para determinar la composición elemental.
Análisis mineralógico para identificar los minerales constituyentes.

Principales resultados:

Las lavas lunares analizadas fueron fechadas en 1963 ± 57 millones de años.
Se determinaron las composiciones químicas y mineralógicas detalladas de estos jóvenes basaltos.
No se encontraron pruebas de altas concentraciones de elementos productores de calor en el manto lunar profundo como fuente de estas lavas.

Conclusiones:

La edad de estos basaltos proporciona una nueva restricción crucial para la cronología del impacto dentro del Sistema Solar interior.
Los hallazgos desafían los modelos existentes de evolución térmica lunar y magmatismo.
Se necesitan explicaciones alternativas para explicar la prolongada actividad magmática en la Luna, ya que el manto profundo no parece estar enriquecido con elementos productores de calor.

Más Videos Relacionados

Metal-silicate Partitioning at High Pressure and Temperature: Experimental Methods and a Protocol to Suppress Highly Siderophile Element Inclusions

Metal-silicate Partitioning at High Pressure and Temperature: Experimental Methods and a Protocol to Suppress Highly Siderophile Element Inclusions

Published on: June 13, 2015

Isolation of Quartz Grains for Optically Stimulated Luminescence OSL Dating of Quaternary Sediments for Paleoenvironmental Research

Isolation of Quartz Grains for Optically Stimulated Luminescence OSL Dating of Quaternary Sediments for Paleoenvironmental Research

Published on: August 2, 2021

Videos de Conceptos Relacionados

Gravity between Spherical Bodies

Gravity between Spherical Bodies

Newton's law of gravitation describes the gravitational force between any two point masses. However, for extended spherical objects like the Earth, the Moon, and other planets, the law holds with an assumption that masses of spherical objects are concentrated at their respective centers.
This assumption can be proved easily by showing that the expression for gravitational potential energy between a hollow sphere of mass (M) and a point mass (m) is the same as it would be for a pair of extended...

Qualitative Analysis

Qualitative Analysis

For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
For instance, group IV...

Gravimetry: Inorganic And Organic Precipitating Agents

Gravimetry: Inorganic And Organic Precipitating Agents

In gravimetry, the precipitant is chosen carefully to obtain a pure solid that can be easily filtered. Common inorganic precipitants can be used to determine several cations and anions. In some cases, the formation of the same precipitate can be used to determine the cation and the anion. For example, the reaction of barium and chromate ions to give barium chromate is used to determine both barium and chromate. However, precipitates such as hydroxides, oxalates, and metal ammonium phosphates...

Gravitation

Gravitation

In the years before Newton, a general belief prevailed that different laws governed objects in the sky than objects on Earth. When Kepler wrote down the three laws of planetary motion, explaining in detail the geometrical properties of the planetary orbits around the Sun, there was no immediate idea to discern their connection with more fundamental laws. It was Isaac Newton who, in 1665–66, figured out the connection between planetary motion, the motion of the moon around the Earth, and...

Radioactive Decay and Radiometric Dating

Radioactive Decay and Radiometric Dating

Radioactivity is a spontaneous disintegration of an unstable nuclide and is a random process, as all the nuclei in the sample do not decay simultaneously. The number of disintegrations per unit time is called the activity (A), which is directly proportional to the number of nuclei in the sample. The decay constant (λ) is an average probability of decay per nucleus in unit time.

Simple Harmonic Motion and Uniform Circular Motion

Simple Harmonic Motion and Uniform Circular Motion

While simple harmonic motion and uniform circular motion may be two separate concepts, they correlate and interlink with each other. Simple harmonic motion is an oscillatory motion in a system where the net force can be described by Hooke's law, while uniform circular motion is the motion of an object in a circular path at constant speed.
There is an easy way to produce simple harmonic motion by using uniform circular motion. For instance, consider a ball attached to a uniformly rotating...