Video Experimental Relacionado

Updated: Mar 15, 2026

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

Los materiales primitivos del Sistema Solar y la Tierra comparten una abundancia inicial (142) Nd

A Bouvier¹, M Boyet²

¹University of Western Ontario, Department of Earth Sciences, Centre for Planetary Science and Exploration, London, Ontario N6A 3K7, Canada.

|September 16, 2016

Resumen

La composición de la Tierra primitiva se alinea con las inclusiones refractarias ricas en calcio y aluminio (CAI), lo que sugiere una relación Sm / Nd cóndrica. Esto resuelve el desplazamiento de neodimio-142 (142Nd) sin necesidad de depósitos ocultos.

Área de la Ciencia:

Cosmoquímica: Investigación de la evolución isotópica del sistema solar temprano utilizando la sistemática samario-neodimio (Sm-Nd).
Ciencia planetaria: Restringir la evolución temprana de los planetesimales y los planetas a través del análisis isotópico.
Geoquímica: Análisis de las variaciones del neodimio-142 (142Nd) para comprender la formación y diferenciación planetaria.

Sus antecedentes:

Las variaciones de neodimio-142 (142Nd) ofrecen información sobre la evolución planetaria temprana, que se deriva de la distribución inicial del disco y la desintegración de samario-146 (146Sm) de corta duración.
Estudios anteriores observaron un desplazamiento en la abundancia de 142Nd entre los meteoritos condríticos y la Tierra, con interpretaciones que incluyen variaciones nucleosintéticas o diferenciación temprana de la Tierra.
Las inclusiones refractarias ricas en calcio y aluminio (CAI) y las condritas de enstatita son materiales clave para reconstruir la composición isotópica del Sistema Solar temprano.

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

Scattering And Absorption of Light in Planetary Regoliths

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

Videos de Conceptos Relacionados

Conditions on Early Earth

Conditions on Early Earth

Around 4 billion years ago, oceans began to condense on earth while volcanic eruptions released nitrogen, carbon dioxide, methane, ammonia, and hydrogen into the primordial atmosphere. However, organisms with the characteristics of life were not initially present on earth. Scientists have used experimentation to determine how organisms evolved that could grow, reproduce, and maintain an internal environment.

Conditions on Early Earth

Conditions on Early Earth

Kepler's Third Law of Planetary Motion

Kepler's Third Law of Planetary Motion

In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. In 1909, he formulated his first two laws based on the observations of his forebears, Nikolaus Copernicus and Tycho Brahe. However, in 1918, he published his third law of planetary motion, which gives a precise mathematical relationship between a planet's average distance from the Sun and the amount of time it takes to revolve around the Sun. It...

Kepler's First Law of Planetary Motion

Kepler's First Law of Planetary Motion

In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. He formulated his first two laws based on the observations of his forebears, Nikolaus Copernicus and Tycho Brahe.
Polish astronomer Nikolaus Copernicus put forth a theory that stated a heliocentric model for the solar system. According to this heliocentric theory, all the planets, including Earth, orbit the Sun in circular orbits.
On the other hand,...

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...

Elements: Chemical Symbols and Isotopes

Elements: Chemical Symbols and Isotopes

A chemical symbol is an abbreviation used to indicate an element or an atom of an element. For example, the symbol for mercury is Hg. The same symbol is used to indicate one atom of mercury (microscopic domain) or to label a container of many atoms of the element mercury (macroscopic domain).
Some symbols are derived from the common English name of the element; others are abbreviations of the name in another language — Latin, Greek or German. For example, the symbol for aluminum (common name)...