The Danebury Iron Age meteorite-An H5 ordinary chondrite "find" from Hampshire, England
The Danebury Iron Age meteorite-An H5 ordinary chondrite "find" from Hampshire, England
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丹恩伯里铁器时代陨石——从英国汉普郡“发现”的 H5 普通球粒陨石
DOI：
10.1111/maps.12301
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发表时间：
2014
影响因子：
2.2
通讯作者：
Pillinger C
中科院分区：
文献类型：
--
作者：
Pillinger C
1989年，在对英国汉普郡铁器时代山堡丹尼伯里的金属加工碎片进行鉴定时，一个30克的样本首次被确认为陨石，已被归类为H5普通球粒陨石。它到达地球的时间为2350±1120年，与恢复现场人类活动最多的时期同步。尽管它在陆地上居住了相当长的时间，但标本的内部非常新鲜，风化指数为W1/2。然而，没有证据表明人类干预了它的保存。它近乎原始的状态被解释为它在史前人类为储存粮食而挖的白垩坑的回填期间偶然被埋葬。这一偶然发现对陨石在高pH值地区的生存具有有趣的影响，因为当地地质导致了天然石灰含量的增加。
What remains of a 30 g sample, first recognized as a meteorite in 1989 during characterization of metalworking debris from Danebury, an Iron Age hillfort, in Hampshire, England, has been classified as an H5 ordinary chondrite. Its arrival on Earth has been dated as 2350 ± 120 yr BP, making it contemporary with the period of maximum human activity at the recovery site. Despite its considerable terrestrial residence age, the interior of the specimen is remarkably fresh with a weathering index of W1/2. There is, however, no evidence of human intervention in its preservation. Its near‐pristine state is explained in terms of its serendipitous burial during the back‐fill of a pit dug into chalk by prehistoric people for the storage of grain. This chance discovery has interesting ramifications for the survival of meteorites in areas having a high pH because of a natural lime content arising as a result of the local geology.