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Ancient rocks reveal when rivers began pouring nutrients into the sea

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Summary
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84% Informative

New find comes courtesy of ancient rocks in China and South Africa .

Water chips away at rocks on land, removing minerals and washing them away.

Change in rock chemistry around that time provides the earliest known chemical evidence for the weathering of Earth ’s continents.

Earth formed about 4.54 billion years ago .

VR Score

91

Informative language

94

Neutral language

72

Article tone

semi-formal

Language

English

Language complexity

47

Offensive language

not offensive

Hate speech

not hateful

Attention-grabbing headline

not detected

Known propaganda techniques

not detected

Time-value

long-living

Source diversity

1

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no affiliate links

Rivers Sustained 3.5 Billion Years