Privileged planet: source of necessary metals (Introduction)
From planetesimals?:
https://www.sciencedaily.com/releases/2024/10/241011141553.htm
"Researchers have used the chemical fingerprints of zinc contained in meteorites to determine the origin of volatile elements on Earth. The results suggest that without 'unmelted' asteroids, there may not have been enough of these compounds on Earth for life to emerge.
"Volatiles are elements or compounds that change into vapour at relatively low temperatures. They include the six most common elements found in living organisms, as well as water. The zinc found in meteorites has a unique composition, which can be used to identify the sources of Earth's volatiles.
***
"Their results show that while these 'melted' planetesimals contributed about 70% of Earth's overall mass, they only provided around 10% of its zinc.
"According to the model, the rest of Earth's zinc came from materials that didn't melt and lose their volatile elements. Their findings suggest that unmelted, or 'primitive' materials were an essential source of volatiles for Earth.
"'We know that the distance between a planet and its star is a determining a factor in establishing the necessary conditions for that planet to sustain liquid water on its surface," said Martins, the study's lead author. "But our results show that there's no guarantee that planets incorporate the right materials to have enough water and other volatiles in the first place -- regardless of their physical state.'"
Comment: This study implies that receiving enough materials for life is a touch and go process, tenuous at best. This planet got it all. Chance or design? I pick design.
Complete thread:
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- Privileged Planet: how quantum effects of CO2 warm us -
David Turell,
2024-02-15, 16:55
- Privileged Planet: a reminder of the moon's contribution -
David Turell,
2024-02-08, 19:38
- Privileged Planet: another review -
David Turell,
2024-02-03, 04:12
- Privileged Planet: enough oxygen -
David Turell,
2024-01-18, 20:02
- Privileged Planet: core movements -
David Turell,
2024-01-07, 16:19
- Privileged Planet: deep plate studies -
David Turell,
2023-10-29, 18:59
- Privileged Planet: our rocks are different -
David Turell,
2023-10-19, 17:12
- Privileged Planet: how plants changed it -
David Turell,
2023-09-13, 17:12
- Privileged Planet: hot period forty million years ago -
David Turell,
2023-09-03, 17:06
- Privileged Planet: life before plate tectonics -
David Turell,
2023-06-17, 15:22
- Privileged Planet: became a watery planet quickly -
David Turell,
2023-06-14, 17:40
- Privileged Planet: shorter days in the past -
David Turell,
2023-06-12, 20:33
- Privileged Planet: the role of iron rich rocks -
David Turell,
2023-06-11, 19:05
- Privileged Planet: contribution of amazing ancient moss -
David Turell,
2023-05-09, 23:17
- Privileged Planet: how our planet cleans itself -
David Turell,
2023-04-08, 02:58
- Privileged Planet: plate tectonics add water -
David Turell,
2023-04-01, 16:55
- Privileged Planet: Inner inner core -
David Turell,
2023-02-22, 15:23
- Privileged Planet: Internal temperature extremely hot -
David Turell,
2023-02-18, 19:25
- Privileged Planet: great oxidation event came earlier -
David Turell,
2023-02-12, 16:34
- Privileged Planet: moon causes magnetosphere tides -
David Turell,
2023-02-06, 17:19
- Privileged Planet: outer solar system supplied our water -
David Turell,
2023-02-04, 16:15
- Privileged Planet: life makes soil from rock -
David Turell,
2023-02-02, 16:06
- Privileged Planet: source of volatile elements -
David Turell,
2023-01-29, 19:43
- Privileged Planet: fairly constant temperature range -
David Turell,
2023-01-28, 17:05
- Privileged Planet: inner core rotation? -
David Turell,
2023-01-23, 18:30
- Privileged Planet: life transformed early Earth -
David Turell,
2023-01-16, 18:22
- Privileged Planet: much of our water present at start -
David Turell,
2022-12-17, 15:14
- Privileged Planet: nitrogen cycle -
David Turell,
2022-09-20, 17:53
- Privileged Planet: how continents were formed -
David Turell,
2022-09-20, 16:09
- Privileged Planet: how continents were formed -
David Turell,
2022-08-12, 18:54
- Privileged Planet: red giant contributions -
David Turell,
2019-12-10, 18:48
- Privileged Planet: continental drift -
David Turell,
2019-02-18, 15:22
- Privileged Planet: another summary of evidence -
dhw,
2018-12-23, 09:36
- Privileged Planet: another summary of evidence -
David Turell,
2018-12-22, 19:29
- Privileged Planet: our sun is different than most stars -
David Turell,
2018-08-09, 00:32
- Privileged Planet: must have water -
David Turell,
2017-07-31, 18:29
- Privileged Planet: complete eclipses -
David Turell,
2017-06-27, 15:00
- Privileged Planet:Third book -
David Turell,
2014-03-14, 14:45
- Privileged Planet:Third book -
David Turell,
2014-03-07, 18:10
- Privileged Planet: Sunburn protection -
David Turell,
2014-03-07, 01:38
- Privileged Planet: New study -
Balance_Maintained,
2013-05-12, 06:08
- Privileged Planet: New study -
David Turell,
2013-05-11, 15:59
- Privileged Planet: New study -
xeno6696,
2012-05-01, 17:16
- Privileged Planet: New study -
dhw,
2012-05-01, 16:53
- Privileged Planet: Geologic carbon cycle -
David Turell,
2014-03-20, 16:56
- Privileged Planet: Lots of water -
David Turell,
2014-06-14, 14:45
- Privileged Planet: Dangerous Electrons blocked - David Turell, 2014-11-27, 14:48
- Privileged Planet: Lots of water -
David Turell,
2014-12-11, 15:09
- Privileged Planet: Self-made water? -
David Turell,
2014-12-17, 15:48
- Privileged Planet: Mineral evolution -
David Turell,
2015-02-21, 14:37
- Privileged Planet: hard to fnd one like us -
David Turell,
2015-06-01, 04:14
- Privileged Planet: formation of continents -
David Turell,
2015-06-27, 18:19
- Privileged Planet: particle protection -
David Turell,
2017-02-16, 21:22
- Privileged Planet: ocean microbe controls - David Turell, 2019-08-08, 00:06
- Privileged Planet: particle protection -
David Turell,
2017-02-16, 21:22
- Privileged Planet: formation of continents -
David Turell,
2015-06-27, 18:19
- Privileged Planet: hard to fnd one like us -
David Turell,
2015-06-01, 04:14
- Privileged Planet: Mineral evolution -
David Turell,
2015-02-21, 14:37
- Privileged Planet: Self-made water? -
David Turell,
2014-12-17, 15:48
- Privileged Planet: Lots of water - David Turell, 2021-03-10, 14:25
- Privileged Planet: carbon cycle under ice sheets -
David Turell,
2019-08-17, 14:50
- Privileged Planet: a brief summary of why it is -
David Turell,
2019-10-23, 21:58
- Privileged Planet: life's metabolism before oxygen -
David Turell,
2019-11-07, 18:19
- Privileged Planet: snowball Earth had a source of oxygen: - David Turell, 2019-12-04, 05:38
- Privileged Planet: life's metabolism before oxygen -
David Turell,
2019-11-07, 18:19
- Privileged Planet: a brief summary of why it is -
David Turell,
2019-10-23, 21:58
- Privileged Planet: Lots of water -
David Turell,
2014-06-14, 14:45
- Privileged Planet: New study -
dhw,
2012-04-26, 14:12