“金釘(ding)子(zi)”作(zuo)為一種俗(su)稱(cheng)(cheng)其來由是(shi)(shi)因為:大(da)約19世紀,美國東西(xi)部鐵路大(da)動脈接軌時,為了(le)紀念這(zhe)個事(shi)件,在接軌處釘(ding)了(le)一枚用金子(zi)打造的(de)(de)鐵路道釘(ding),簡(jian)稱(cheng)(cheng)“GSSP”,而(er)在地(di)(di)(di)(di)質(zhi)上(shang)的(de)(de)全(quan)球界線層(ceng)(ceng)型剖(pou)(pou)面(mian)點的(de)(de)簡(jian)稱(cheng)(cheng)也是(shi)(shi)“GSSP”,所以通俗(su)稱(cheng)(cheng)為“金釘(ding)子(zi)”剖(pou)(pou)面(mian)。黃泥(ni)塘“金釘(ding)子(zi)”就(jiu)是(shi)(shi)距今4.6億年(nian)左(zuo)右一段全(quan)球標(biao)準(zhun)地(di)(di)(di)(di)層(ceng)(ceng)剖(pou)(pou)面(mian),地(di)(di)(di)(di)質(zhi)年(nian)代(dai)是(shi)(shi)在奧陶紀中(zhong)部的(de)(de)那一段時間(jian),通俗(su)地(di)(di)(di)(di)講“金釘(ding)子(zi)”就(jiu)是(shi)(shi)一把尺(chi)(chi)(chi)子(zi),而(er)這(zhe)里指(zhi)(zhi)的(de)(de)尺(chi)(chi)(chi)子(zi)不象(xiang)我們平時用來量(liang)衣服(fu)、量(liang)身(shen)長(chang)的(de)(de)尺(chi)(chi)(chi)子(zi),這(zhe)里指(zhi)(zhi)的(de)(de)尺(chi)(chi)(chi)子(zi)是(shi)(shi)衡量(liang)地(di)(di)(di)(di)質(zhi)年(nian)代(dai)的(de)(de)一把尺(chi)(chi)(chi)子(zi),也就(jiu)是(shi)(shi)說要判斷(duan)全(quan)世界所有(you)那個年(nian)代(dai)的(de)(de)地(di)(di)(di)(di)層(ceng)(ceng)都(dou)必(bi)須把我們常(chang)山黃泥(ni)塘“金釘(ding)子(zi)”剖(pou)(pou)面(mian)當作(zuo)尺(chi)(chi)(chi)子(zi)去比(bi)較,以此為標(biao)準(zhun),來推斷(duan)分析其它各地(di)(di)(di)(di)的(de)(de)地(di)(di)(di)(di)質(zhi)年(nian)代(dai),所以它是(shi)(shi)全(quan)球標(biao)準(zhun)地(di)(di)(di)(di)層(ceng)(ceng)剖(pou)(pou)面(mian)。
據專(zhuan)家考證,黃泥塘(tang)“金釘子”剖面4.6億年以前是一(yi)片(pian)海(hai)洋(yang)(yang),隨著(zhu)地球(qiu)的(de)(de)(de)運動,地殼的(de)(de)(de)演變,河(he)床的(de)(de)(de)抬高,這里已(yi)(yi)形成(cheng)(cheng)陸地,海(hai)洋(yang)(yang)里的(de)(de)(de)許多(duo)生(sheng)物(wu)(wu)(wu)死(si)亡后形成(cheng)(cheng)了化(hua)石(shi)(shi),目前在(zai)黃泥塘(tang)“金釘子”景(jing)區內(nei)可以找(zhao)到多(duo)種(zhong)(zhong)生(sheng)物(wu)(wu)(wu)化(hua)石(shi)(shi),其中筆石(shi)(shi)化(hua)石(shi)(shi)、牙形刺生(sheng)物(wu)(wu)(wu)化(hua)石(shi)(shi)、腕足(zu)類生(sheng)物(wu)(wu)(wu)化(hua)石(shi)(shi)、三葉蟲生(sheng)物(wu)(wu)(wu)化(hua)石(shi)(shi)為(wei)主要的(de)(de)(de)四種(zhong)(zhong)化(hua)石(shi)(shi),還有少(shao)量的(de)(de)(de)腹足(zu)類生(sheng)物(wu)(wu)(wu)化(hua)石(shi)(shi),多(duo)年來(lai)南(nan)京古生(sheng)物(wu)(wu)(wu)研究所(suo)和浙江省地調院的(de)(de)(de)專(zhuan)家多(duo)次來(lai)此(ci)考察,已(yi)(yi)將(jiang)各種(zhong)(zhong)化(hua)石(shi)(shi)標本采集(ji)起來(lai)作為(wei)科學研究用(yong)。在(zai)縣(xian)城(cheng)文峰廣(guang)場地質博(bo)物(wu)(wu)(wu)館內(nei)也有展出。
天(tian)馬街道黃泥塘村
杭金(jin)衢(qu)高速常山出口往南7公里