发现火星岩石沉积或来自古代海洋—新闻

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font: 12px 宋体; float: right"> 选择字号：<span onclick="showsize(12)" style="background-color: #587c19; color: #fff; font-size: 12px; cursor: pointer">小</span> <span onclick="showsize(14)" style="background-color: #587c19; color: #fff; font-size: 12px; cursor: pointer">中</span> <span onclick="showsize(16)" style="background-color: #587c19; color: #fff; font-size: 12px; cursor: pointer"> 大</span> </div> </td> </tr> <tr> <td align="center"> <div id="content1" style=" padding:15px; text-align: left; line-height: 24px; word-wrap: break-word;word-break:break-all" class="f14"> <table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td height="20"> </td> </tr> <tr> <td align="center" valign="middle" class="style1" style="font-size: 13px; color: #333333; font-family: 宋体; line-height: 20px"> <b>香港理工大学与中国空间技术研究院等</b></td> </tr> <tr> <td align="center" class="style1" style="font-size: 22px; color: #587c19; font-family: 黑体; line-height: 30px"> 发现火星岩石沉积或来自古代海洋</td> </tr> <tr> <td align="center" valign="middle" class="style1" style="font-size: 13px; color: #333333; font-family: 宋体; line-height: 20px"> <b></b></td> </tr> </table> <p > </p><html> <head></head> <body> <p style=";; margin: 0px 0px 26px; text-align: justify; word-break: break-all;">港理工大学吴波与中国空间技术研究院北京卫星环境工程研究所研究员董杰等合作，研究认为火星表面发现的沉积矿床或来自35亿年前的一个古代海洋，这为火星上存在与乌托邦区域南部近岸带（或海岸线）相符的特征，以及火星历史早期曾有一个短暂存在的海洋提供了进一步证据。相关研究11月8日发表于《科学报告》。</p> <p style=";; margin: 0px 0px 26px; text-align: justify; word-break: break-all;">“祝融号”火星车于2021年5月在火星着陆，之后便一直在北方荒原分析火星表面的沉积物——北方荒原是火星北半球的一个低地平原。之前的研究显示，该地区的物质可能源于洪水和海洋沉积物，相比火山活动留下的物质，这些细颗粒物尺寸与这一环境更相符。</p> <p style=";; margin: 0px 0px 26px; text-align: justify; word-break: break-all;">吴波和合作者分析了轨道器和“祝融号”火星车取回的数据，估计了火星表面年龄和乌托邦平原南部发现物质的矿物组成。他们发现了独特的地形特征，如与近岸带相符的槽和沉积通道，表明约36.8亿年前可能有一次与洪水有关的形成事件。在这个情景下，短暂存在的冰冻海洋形成了一条海岸线，海洋表面可能结冰并在34.2亿年前消失。</p> <p style=";; margin: 0px 0px 26px; text-align: justify; word-break: break-all;">研究者表示，“祝融号”火星车的原位测量数据无法作为古代海洋存在的直接证据，但发现乌托邦平原南部可能曾有大量水体增进了人们对火星气候演化的认识，为未来火星任务提供了潜在着陆点，以进一步研究可能存在的古代水体及其对塑造火星地质特征的作用。</p> <p style=";; margin: 0px 0px 26px; text-align: justify; word-break: break-all;">相关论文信息：</p> <p class="lastPadding" style=";; margin: 0px 0px 26px; text-align: justify; word-break: break-all;">https://doi.org/10.1038/s41598-024-75507-w</p> </body> </html><div> </div><div style="text-indent:0em;font-weight:bold;font-size:13px;border:solid 1px #333 ;padding:10px;" class="bq">版权声明：凡本网注明“来源：中国科学报、科学网、科学新闻杂志”的所有作品，网站转载，请在正文上方注明来源和作者，且不得对内容作实质性改动；微信公众号、头条号等新媒体平台，转载请联系授权。邮箱：shouquan@stimes.cn。</div> <div style="border-bottom: solid 1px #bfc89d; vertical-align: bottom; width: 100%; height: 20px"> </div> <div style="width: 100%; height: 20px; text-align: center; margin:10px">  <script src="/html/js/share.js" type="text/javascript"></script>  </div> </div> </td> </tr> </table> </td> </tr> </table> <div style="line-height: 10px; height: 10px; clear: both;">  </div> <div style=" vertical-align: bottom; width: 100%; text-align:right"> <div style="float:left"> </div> <form action="/html/mail.aspx" method="post" id="myform" style="float:right"> <span onclick="javascript:window.print()" style="cursor: pointer; 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发现火星岩石沉积或来自古代海洋—新闻—科学网