Tsohon Harry Rocks

Tsohon Harry Rocks tsari ne guda uku, gami da tarin da kuma gungume, wanda ke Handfast Point, a Tsibirin Purbeck a Dorset, kudancin Ingila. Sun nuna mafi gabashin yankin Jurassic Coast, Gidan Tarihin Duniya na UNESCO.

 Wurin da yake 
Tsohon Harry Rocks yana tsaye a gabashin Studland, kimanin kilomita 2.5 (4  arewa maso gabashin Swanage, kuma kimanin kilomita 5 (8  kudu da manyan garuruwan Poole da Bournemouth. A kudu akwai tsaunuka na Ballard Down, yawancin su mallakar National Trust ne. Ana iya kallon duwatsun daga sashin Dorset na South West Coast Path. [ana buƙatar ƙa'ida][]

 Kafawa 
Chalk na Tsohon Harry Rocks ya kasance wani ɓangare na dogon lokaci na Chalk tsakanin Purbeck da Isle of Wight, amma ya kasance a matsayin tudu bayan manyan sassan wannan sutura sun lalace. Yayin da tudun ya sha wahala daga aikin hydraulic (a tsari inda iska da ruwa aka tilasta su cikin ƙananan tsagewa ta hanyar ƙarfin teku, wanda ke haifar da fadada tsagewa), koguna na farko, sannan arches sun kafa. A saman arches rushe bayan da aka raunana da ruwan sama da iska, barin disconnected stacks. Ɗaya daga cikin waɗannan tarin an san shi da Tsohon Harry . Tsohon Matar Harry wani tarin ne wanda aka lalata ta hanyar lalatawa da abrasion, har sai kasa ta kasance mai rauni sosai saman ya fadi, ya bar wani tushe. Ayyukan hydraulic shine babban dalilin rushewa (ƙarfin shear na raƙuman ruwa) wanda ya lalata dutsen kuma ya sa ya faɗi. [ana buƙatar ƙa'ida][]

 Ilimin ƙasa 
Yankunan Ballard Down suna daga cikin Portsdown Chalk Formation, wanda ke dauke da wasu ƙungiyoyi na flint, kuma an kafa su shekaru miliyan 84-72 da suka gabata a zamanin Campanian na Late Cretaceous .  An lalata igiyoyin dutse a hankali a cikin ƙarni, wasu daga cikin ɗakunan da suka gabata sun faɗi (Matar Harry ta asali ta faɗi a cikin 1509), yayin da aka kafa sabbin ta hanyar karya ƙananan isthmuses. A fadin ruwa zuwa gabas, The Needles on the Isle of Wight yawanci suna bayyane. Wadannan kuma suna daga cikin wannan rukuni kuma 'yan dubban shekaru da suka gabata ne kawai aka haɗa su da Ballard Down.

Don samar da tarin, teku a hankali ya rushe tare da haɗin gwiwa da jiragen gado inda mai laushi ya haɗu da dutse mai laushi na dutsen dutse don ƙirƙirar kogo. Wannan daga ƙarshe ya lalace don ƙirƙirar bakan. Daga baya akwatin ya rushe don barin tarin Tsohon Harry da matarsa, Babu Mutumin Land (babban dutse a ƙarshen dutsen) da kuma rata na St Lucas' Leap.

Tsohon Harry an kafa shi ne ta hanyar hanyoyin rushewa, wanda zai cire tarin, yayin da sabbin tarin suka bunkasa. Wasu mutane suna so su adana duwatsu kuma su kare su daga hanyoyin rushewa da suka kafa Tsohon Harry. National Trust, wanda ke da tarin har abada, suna da gogewa wajen kula da bakin teku, kuma sun gano cewa "aiki tare da matakai na halitta shine mafi kyawun hanyar".

 Labari 
Akwai labaru daban-daban game da sunan duwatsu. Wani labari ya ce Iblis (wanda aka fi sani da "Tsohon Harry") ya kwanta a kan duwatsu. Wani labari na gida ya ce an sanya wa duwatsun suna bayan Harry Paye, sanannen ɗan fashi na Poole, wanda jirginsa ya ɓoye a bayan duwatsu yana jiran 'yan kasuwa masu wucewa. Duk da haka wani labari ya nuna cewa wani hari na Viking na ƙarni na tara ya rushe ta hanyar guguwa kuma daya daga cikin wadanda suka nitse, Earl Harold, ya zama ginshiƙi na chalk.

An watsar da toka na marubucin H G Wells a cikin ruwa daga Old Harry Rocks . West, Anthony. H.G. Wells: Aspects of a Life, p. 153. London: Hutchinson & Co, 1984. .

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