圆洞石头的原因- - - - - -地球科学堆栈交换江南电子竞技平台江南体育网页版 最近30从www.hoelymoley.com 2023 - 07 - 07 - t21:43:46z //www.hoelymoley.com/feeds/question/8267 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/8267 6 圆洞石头的原因 Nickpick //www.hoelymoley.com/users/6210 2016 - 06 - 26 - t17:28:08z 2020 - 01 - 25 - t15:03:49z < p >我拿起这块石头形式英格兰南部海岸的海滩(切开)。怎么可能有这样的圆孔?大量的石头看起来相似。< / p > < p > < a href = " https://i.stack.imgur.com/nFjU4.jpg " rel = " noreferrer " > < img src = " https://i.stack.imgur.com/nFjU4.jpg " alt = "石头洞”> < / > < / p > //www.hoelymoley.com/questions/8267/-/8272 # 8272 1 戈登斯坦格回答的圆洞石头的原因 戈登斯坦格 //www.hoelymoley.com/users/4507 2016 - 06 - 27 - t01:49:52z 2016 - 06 - 27 - t01:49:52z < p >有两个过程。第一个是任何孔的形成,如侵蚀的软岩的一部分,如燧石(二氧化硅)周围形成有机的东西,或软岩。同时,划带重点如管虫、腹足类、棘皮动物自然腔开始。第二个过程是湍流(波驱动?)冲刷和扩大孔的沙粒。这一过程包括圆形涡流会侵蚀一个不规则腔为圆形腔。< / p > //www.hoelymoley.com/questions/8267/-/8296 # 8296 6 user824回答的圆洞石头的原因 user824 //www.hoelymoley.com/users/0 2016 - 06 - 29 t18:19:07z 2016 - 06 - 29 t20:29:02z < p >你的图像看起来非常类似于岩石我们这里西海岸的温哥华岛。我们有一些岩石无聊的双壳类,将有效地钻到岩石脱落和侵蚀成一个形状类似于你在展示什么。< a href = " https://en.wikipedia.org/wiki/Pholadidae " rel = " noreferrer " > https://en.wikipedia.org/wiki/Pholadidae < / >或< a href = " https://the-hazel-tree.com/2013/08/21/piddocks-anything-but-boring/ " rel = " noreferrer " > https://the-hazel-tree.com/2013/08/21/piddocks-anything-but-boring/ < / > < / p > < p >还有钻入岩石的棘皮动物,Strongylocentrotus purpuratus, < a href = " https://en.wikipedia.org/wiki/Strongylocentrotus_purpuratus " rel = " noreferrer " > https://en.wikipedia.org/wiki/Strongylocentrotus_purpuratus < / > < a href = " https://bmscblog.wordpress.com/2013/01/09/holey-rocks/ " rel = " noreferrer " > https://bmscblog.wordpress.com/2013/01/09/holey-rocks/ < / >,但这些生物的漏洞往往是大于你展示形象。< / p > < p >我相信孔是由某种形式一个无聊的双壳类。< / p > //www.hoelymoley.com/questions/8267/-/9091 # 9091 3 艾莉森Venugoban回答的圆洞石头的原因 艾莉森Venugoban //www.hoelymoley.com/users/6963 2016 - 11 - 12 - t13:03:08z 2016 - 11 - 12 - t20:52:52z < p >你发现有一个漂亮的岩石已经被一群piddocks无聊。Piddocks与椭圆形小双壳类动物贝壳镶好牙齿。他们使用齿壳岩石中挖掘洞穴。强壮的身体的一部分,称为“脚”,抓住石头表面,有助于旋转壳,创建一个圆形搜索行动。随着时间的推移,随着piddock的增长,其浅挖掘更深。piddock生活在这个安全的隧道和一个虹吸不止于边缘的隧道,它使用过滤食品如海水浮游植物。< / p > < p >个人piddocks生活八年左右,所以一些岩石在他们的殖民地定居可以充斥着相当深刻的希望。壳非常脆弱,一旦动物死后壳是容易折断了海洋的行动-这意味着你不可能找到一个整体piddock壳,除非它还嵌在石头。但他们离开的例子在岩石上手工活,和随着时间的推移,这些岩石被冲到海滩上。以下是一些照片的piddock的岩石钻孔。 Some still have the piddocks hiding inside! And the third shows a piddock outside of its protective tunnel.

//www.hoelymoley.com/questions/8267/-/16237 # 16237 0 大卫迪回答的圆洞石头的原因 大卫迪 //www.hoelymoley.com/users/15163 2019 - 02 - 12 - t11:55:43z 2019 - 02 - 12 - t12:13:45z < p >这看起来像石化水果。两叶你将看到一个更轻的圆片,附件区这种水果的亲本植株/种子了。< / p >

It's probably fruit, as a seed would have had different shape, and it would seem to have fallen at a time of extremely hot weather becoming quickly dehydrated after being invaded by some form of herbivore. I would discount bivalve activity but a terra based gastropod may have been the perpetrator before the fruit became petrified.

//www.hoelymoley.com/questions/8267/-/17054 # 17054 0 Orgorg回答的圆洞石头的原因 Orgorg //www.hoelymoley.com/users/16980 2019 - 05 - 26 - t16:28:25z 2020 - 01 - 25 - t05:59:12z < p >我曾经发现他们中的许多人在灰色页岩石灰石岩石湖泊冲激着美国东北部。< / p > < p >小时候我们被告知,他们被称为“幸运石头”。如果我们发现一个是幸运的。我们被告知,美国原住民用来发现和使用它们的权重的渔网。< / p > < p >我总是认为一个古老的水生植物已在泥浆和数百万年,植物恶化,留下了化石。随着时间的推移,植物化石被毁了,留下一个洞的植物。< / p >

Some times we would find small pieces of underwater plant fossils on the shore also. Sometimes we would find plant fossils in a shale rock cliffs as the shale breaks away.

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 //www.hoelymoley.com/questions/8267/-/19073 # 19073 0 user18607回答的圆洞石头的原因 user18607 //www.hoelymoley.com/users/0 2020 - 01 - 25 - t12:58:17z 2020 - 01 - 25 - t15:03:49z < p >靠窗外:< / p > < p >我怀疑OP的石头是无聊的生物的结果。它相当是一个< a href = " https://en.wikipedia.org/wiki/Chert /媒体/文件:Flint_with_weathered_crust.JPG”rel = " nofollow noreferrer " >白垩纪燧石的< / >白垩悬崖(如果存在)或在海滩上的海洋中被淘汰了。非常丰富的地区(和其他地方,如波罗的海)。这里包括@Orgong第二个例子,我认为这是一个燧石,太(也许不是cretacous),只是因为他们是如此的丰富。都可以检查是否打开。如果他们只显示一个白色的皮质内(外层)和非晶态和任何灰色到黑色的阴影,它显然是一个燧石。< / p > < p >燧石是沉积岩的无定形氧化硅硅分泌生物。如果你打开一个大你甚至可以找到一个完整的< a href = " https://depositsmag.com/2017/11/02/humble-flint-sea-urchins-and-the-stories-they-tell/ " rel = " nofollow noreferrer " >化石骨架的海胆< / >。它们形成结节的沉淀物,有时在分米的视野,结合邻居在这个过程中,形成板块,无论如何可以拥有任意形状包括凹或有破洞。流程详细描述例如< a href = " https://ocw.mit.edu/courses/earth -大气-和-行星sciences/12 - 110 -沉积-地质-弹簧- 2007/lecture notes/ch6.pdf”rel = " nofollow noreferrer " > < / >。< / p > < p >旁注:非常好东西练习石头凿石。使用一个密集的圆形砂岩作为一个一磅重的东西。 And keep an easy wrist. It is all about the speed and angle, not the force. And do practice on a blanket to collect all the small flakes and chips or people will cut their feet when they wade through the remains of the workshop :-)
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