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Why did the earliest rock samples date from 800 Million Years After Earth formed?
Wiki User
∙ 7y ago
earth cooled suffciently
Wiki User
∙ 8y ago
Wiki User
∙ 11y agoEarth Cooled Sufficiently
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Why moon is called natural satellites?
Because it was not man-made. The moon was formed a few million years after the earth and almsot 4 billion years before our earliest ancestors.
The origins of the mineral sample were?
The origins of most mineral samples were terrestrial. This means that they were naturally formed on Earth, and were not extra-terrestrial.
Holes drilled several kilometers into earth's crust provide direct evidence about earth's interior in the form of?
Rock Samples.
Was the earth formed 50 million years ago?
The current best estimate for the age of the Earth is approximately 4.6 billion years, so it is much older than 50 million years!
What era was earth first formed Cenozoic Mesozoic Paleozoic or Precambrian PLEASE HELP?
The earth first formed at the beginning of the Precambrian supereon which spans a very large period of time from 4,567 million years ago, through to 542 million years ago.The beginning of the Precambrian where Earth formed is known as the Hadean eon, stretching from 4.7 Ga (billion years ago) and ended roughly 3.8 billion years ago.
Why do the earliest rock samples date from 800 million years after Earth formed?
IT took the earth this long to cool enough to form rocks
When did the earliest organisims appear on Earth?
Nobody really knows when the earliest organisms were on Earth. It was definitely more than a million years ago.
Why is moon called a natural satellite?
Because it was not man-made. The moon was formed a few million years after the earth and almsot 4 billion years before our earliest ancestors.
Why moon is called natural satellites?
Because it was not man-made. The moon was formed a few million years after the earth and almsot 4 billion years before our earliest ancestors.
What is the earliest period in Earth's history?
The answer is debated amongst geologists, astrologists and palaeontologists - the earliest period in life's history is the Archean eon, when the first proto-cells were thought to have formed. The earliest period there, is the Eoarchean - 4200 - 4400 million years ago. However, the earliest eon is the Hadean, which encompasses the formation of the Earth as celestial body 4600 million years ago, up to 4200 million years ago. The earth was formed by accretion (gravitational attraction of smaller bodies, to form a central object of greater mass, thus attracting more smaller bodies, and so on), within 10 - 20 million years, so, other than describing this period of Earth's history as 'Proto-Earth', there isn't really a way of classifying even earlier stages, unless you are willing to look into the stages of accretion in forming planets. (The earliest stage would probably be a 'proto-planetary disk' stage, which was itself formed as a by-product of the formation of the sun, followed by a kilometre-wide planetisimal, and then a Mars sized 'embryo', growing progressively. In this sense, the Earth and the Sun are descended from the same Giant Molecular Cloud, or GMC.)
Geologist think Earth's continents began to form?
About 500 million years after Earth formed
The origins of the mineral sample were?
The origins of most mineral samples were terrestrial. This means that they were naturally formed on Earth, and were not extra-terrestrial.
What happen 800 million years after Earth formed to allowed rocks to form?
Earth cooled sufficiently
What is the earliest span of time in earth history?
The answer is debated amongst geologists, astrologists and palaeontologists - the earliest period in life's history is the Archean eon, when the first proto-cells were thought to have formed. The earliest period there, is the Eoarchean - 4200 - 4400 million years ago. However, the earliest eon is the Hadean, which encompasses the formation of the Earth as celestial body 4600 million years ago, up to 4200 million years ago. The earth was formed by accretion (gravitational attraction of smaller bodies, to form a central object of greater mass, thus attracting more smaller bodies, and so on), within 10 - 20 million years, so, other than describing this period of Earth's history as 'Proto-Earth', there isn't really a way of classifying even earlier stages, unless you are willing to look into the stages of accretion in forming planets. (The earliest stage would probably be a 'proto-planetary disk' stage, which was itself formed as a by-product of the formation of the sun, followed by a kilometre-wide planetisimal, and then a Mars sized 'embryo', growing progressively. In this sense, the Earth and the Sun are descended from the same Giant Molecular Cloud, or GMC.)
Where did precious metals come from?
ScienceDaily (Sep. 7, 2011) - Ultra high precision analyses of some of the oldest rock samples on Earth by researchers at the University of Bristol provides clear evidence that the planet's accessible reserves of precious metals are the result of a bombardment of meteorites more than 200 million years after Earth was formed.
Holes drilled several kilometers into earth's crust provide direct evidence about earth's interior in the form of?
Rock Samples.
When was the Yangtze river made?
It was formed by by the movement of earth's crust about 40 million years ago.
