“金(jin)(jin)釘(ding)(ding)(ding)(ding)子(zi)”作(zuo)為一(yi)(yi)種俗稱(cheng)其來由是(shi)(shi)因為:大(da)約19世(shi)紀,美(mei)國東西部鐵(tie)路(lu)大(da)動脈接軌時,為了(le)紀念這(zhe)個事件(jian),在接軌處釘(ding)(ding)(ding)(ding)了(le)一(yi)(yi)枚用金(jin)(jin)子(zi)打造的鐵(tie)路(lu)道釘(ding)(ding)(ding)(ding),簡稱(cheng)“GSSP”,而(er)在地(di)(di)(di)(di)質(zhi)上(shang)的全球界線層型剖(pou)面(mian)(mian)(mian)點的簡稱(cheng)也是(shi)(shi)“GSSP”,所以(yi)(yi)通(tong)(tong)俗稱(cheng)為“金(jin)(jin)釘(ding)(ding)(ding)(ding)子(zi)”剖(pou)面(mian)(mian)(mian)。黃(huang)泥塘“金(jin)(jin)釘(ding)(ding)(ding)(ding)子(zi)”就是(shi)(shi)距今4.6億年(nian)左右一(yi)(yi)段全球標(biao)準地(di)(di)(di)(di)層剖(pou)面(mian)(mian)(mian),地(di)(di)(di)(di)質(zhi)年(nian)代是(shi)(shi)在奧(ao)陶紀中(zhong)部的那一(yi)(yi)段時間,通(tong)(tong)俗地(di)(di)(di)(di)講(jiang)“金(jin)(jin)釘(ding)(ding)(ding)(ding)子(zi)”就是(shi)(shi)一(yi)(yi)把(ba)尺(chi)(chi)子(zi),而(er)這(zhe)里指的尺(chi)(chi)子(zi)不象我(wo)們平時用來量(liang)衣(yi)服、量(liang)身(shen)長(chang)的尺(chi)(chi)子(zi),這(zhe)里指的尺(chi)(chi)子(zi)是(shi)(shi)衡(heng)量(liang)地(di)(di)(di)(di)質(zhi)年(nian)代的一(yi)(yi)把(ba)尺(chi)(chi)子(zi),也就是(shi)(shi)說要判斷(duan)全世(shi)界所有那個年(nian)代的地(di)(di)(di)(di)層都必(bi)須(xu)把(ba)我(wo)們常山(shan)黃(huang)泥塘“金(jin)(jin)釘(ding)(ding)(ding)(ding)子(zi)”剖(pou)面(mian)(mian)(mian)當作(zuo)尺(chi)(chi)子(zi)去比較,以(yi)(yi)此為標(biao)準,來推斷(duan)分析其它各地(di)(di)(di)(di)的地(di)(di)(di)(di)質(zhi)年(nian)代,所以(yi)(yi)它是(shi)(shi)全球標(biao)準地(di)(di)(di)(di)層剖(pou)面(mian)(mian)(mian)。
據專(zhuan)家考(kao)證,黃(huang)泥(ni)(ni)塘“金釘子”剖(pou)面4.6億年(nian)以前是一片海洋(yang),隨著地(di)球的(de)(de)運動,地(di)殼(ke)的(de)(de)演變,河床(chuang)的(de)(de)抬高,這(zhe)里已形成陸地(di),海洋(yang)里的(de)(de)許多生(sheng)物死亡后形成了(le)化(hua)(hua)石(shi),目(mu)前在黃(huang)泥(ni)(ni)塘“金釘子”景區內(nei)(nei)可以找到多種(zhong)生(sheng)物化(hua)(hua)石(shi),其中筆石(shi)化(hua)(hua)石(shi)、牙形刺生(sheng)物化(hua)(hua)石(shi)、腕(wan)足類(lei)生(sheng)物化(hua)(hua)石(shi)、三葉蟲生(sheng)物化(hua)(hua)石(shi)為(wei)主要的(de)(de)四種(zhong)化(hua)(hua)石(shi),還有少量的(de)(de)腹足類(lei)生(sheng)物化(hua)(hua)石(shi),多年(nian)來南京古生(sheng)物研(yan)究所(suo)和(he)浙江省(sheng)地(di)調(diao)院的(de)(de)專(zhuan)家多次來此考(kao)察,已將(jiang)各種(zhong)化(hua)(hua)石(shi)標本采集起來作(zuo)為(wei)科學研(yan)究用。在縣城文峰廣場地(di)質博物館內(nei)(nei)也有展出。
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