综合一区欧美国产,99国产麻豆免费精品,九九精品黄色录像,亚洲激情青青草,久久亚洲熟妇熟,中文字幕av在线播放,国产一区二区卡,九九久久国产精品,久久精品视频免费

Global EditionASIA 中文雙語(yǔ)Fran?ais
China
Home / China / Innovation

Chinese scientists discover how Earth's deep mantle water made planet habitable

Xinhua | Updated: 2025-12-12 15:32
Share
Share - WeChat

GUANGZHOU -- Chinese scientists have uncovered a crucial mechanism explaining how Earth may have stored vast quantities of water in its infancy, shedding new light on the planet's dramatic evolution from a fiery ball of magma to the life-nurturing world of today.

Researchers from the Guangzhou Institute of Geochemistry under the Chinese Academy of Sciences have experimentally demonstrated that the planet's deep mantle could have acted as a massive reservoir for water over four billion years ago, according to the study published on Friday in the journal Science.

"Where did the water go when Earth's early magma oceans crystallized? For the deepest mantle, the answer has been elusive," the journal stated in an editorial summary.

The key lies in bridgmanite, the dominant mineral in the lower mantle. While previously thought to have limited water storage capacity, the Chinese team has discovered that the mineral actually exhibits a powerful, temperature-dependent ability to trap water.

They recreated the extreme conditions of the lower mantle -- high pressure and scorching temperatures up to approximately 4,100 degrees Celsius -- using a sophisticated diamond anvil cell apparatus combined with laser heating.

Their findings reveal a paradox: the hotter the environment, the more efficiently bridgmanite captures and stores water molecules during its formation from cooling magma.

This process could have locked away in the solid mantle an amount of water equivalent to between 0.08 and 1 times the volume of all modern oceans, according to the study.

This primordial "water stockpile" has been gradually cycled back to the surface through volcanic activities, contributing to the formation of a blue, habitable planet.

Top
BACK TO THE TOP
English
Copyright 1994 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
 
门源| 湘西| 离岛区| 衢州市| 惠东县| 张掖市| 图木舒克市| 隆回县| 晋中市| 宁河县| 修文县| 鸡东县| 平罗县| 高淳县| 马尔康县| 仪征市| 隆安县| 台北县| 明光市| 江陵县| 遵义县| 洛南县| 宝鸡市| 昭觉县| 绥阳县| 安乡县| 富裕县| 榆中县| 清流县| 迭部县| 太湖县| 宾川县| 昆山市| 都匀市| 神农架林区| 太谷县| 花莲县| 佛教| 江油市| 遂溪县| 贞丰县|