遺址發(fa)現(xian)文物近(jin)千件,其中(zhong)陶器(qi)475件,石(shi)器(qi)169件,骨器(qi)六七十件,銅器(qi)14件。陶器(qi)有(you)(you)夾沙和硬(ying)陶兩種,前者皆手制,后者輪(lun)制,且有(you)(you)花(hua)紋(wen)(wen)。陶器(qi)很少完整(zheng),其中(zhong)以網(wang)墜為多(duo)。石(shi)器(qi)有(you)(you)斧、錛(ben)、鑿(zao)(zao)、刀、鏃、錐、環、紡輪(lun)、磨(mo)石(shi)等。石(shi)刀全部穿孔(kong)(kong)(kong),有(you)(you)單(dan)(dan)孔(kong)(kong)(kong)、雙(shuang)孔(kong)(kong)(kong),也有(you)(you)磨(mo)槽后穿孔(kong)(kong)(kong)的。骨角器(qi)有(you)(you)針、錐、紡輪(lun)、磨(mo)石(shi)等。石(shi)刀全部穿孔(kong)(kong)(kong),有(you)(you)單(dan)(dan)孔(kong)(kong)(kong)、雙(shuang)孔(kong)(kong)(kong),也有(you)(you)磨(mo)槽后穿孔(kong)(kong)(kong)的。骨角器(qi)有(you)(you)針、錐、紡輪(lun)、穿孔(kong)(kong)(kong)獸(shou)(shou)牙、穿孔(kong)(kong)(kong)骨片等。銅器(qi)有(you)(you)斧、鋮、刀、鑿(zao)(zao)、環、魚鉤和裝飾品(pin),還(huan)發(fa)現(xian)半(ban)塊(kuai)陶范(fan),范(fan)上(shang)花(hua)紋(wen)(wen)與一把(ba)銅斧花(hua)紋(wen)(wen)相吻合。此外,遺址中(zhong)有(you)(you)四處發(fa)現(xian)谷物,出(chu)土時均(jun)成黑色。經有(you)(you)關部門(men)鑒定,出(chu)土谷物屬于粳稻類型(xing)。還(huan)有(you)(you)大(da)量(liang)獸(shou)(shou)骨出(chu)土。
經(jing)中國科學院(yuan)考古研究所實(shi)驗(yan)室放射性碳素測(ce)定(ding),海門口出土圓木樁(zhuang),距今已3115±90年(公元(yuan)前1150±90年)。經(jing)過樹(shu)輪較正后的數據(ju)為公元(yuan)前1335±155年。
海門(men)口遺(yi)址出土(tu)文物(wu),屬(shu)銅(tong)(tong)石并(bing)用時期(qi)文化,這(zhe)一遺(yi)址的(de)(de)發(fa)現(xian),反映(ying)出云(yun)南(nan)(nan)原始社(she)會末期(qi)之社(she)會面貌,說明當時這(zhe)里已(yi)形成一個濱水(shui)的(de)(de)村落,村落房屋為一種干欄(lan)建筑,與近代云(yun)南(nan)(nan)一些少數民族房屋相似。遺(yi)址發(fa)現(xian)的(de)(de)器(qi)(qi)物(wu),具(ju)有洱海地(di)(di)(di)區(qu)新石器(qi)(qi)文化若干特征,無(wu)論石器(qi)(qi)或骨器(qi)(qi),都磨得整(zheng)齊精致(zhi),陶器(qi)(qi)開始出現(xian)輪制(zhi)痕跡,說明整(zheng)個社(she)會生產(chan)力有了飛躍的(de)(de)進步。特別值得注意的(de)(de)是(shi)(shi),發(fa)現(xian)的(de)(de)14件銅(tong)(tong)器(qi)(qi)中(zhong)有斧(fu)(fu)、刀、鑿裝(zhuang)飾品(pin)和魚鉤,還有制(zhi)造銅(tong)(tong)斧(fu)(fu)的(de)(de)范,標志著當地(di)(di)(di)冶(ye)金(jin)(jin)術的(de)(de)發(fa)展。這(zhe)些銅(tong)(tong)器(qi)(qi)雖然粗糙、簡單,但后來云(yun)南(nan)(nan)光輝(hui)燦爛的(de)(de)青(qing)銅(tong)(tong)文化是(shi)(shi)從這(zhe)里開始的(de)(de)。由于生產(chan)工具(ju)的(de)(de)改造,農業(ye)、畜牧(mu)業(ye)和漁獵均(jun)很(hen)發(fa)達。遺(yi)址中(zhong)發(fa)現(xian)的(de)(de)粳稻大概一直是(shi)(shi)遠古時期(qi)云(yun)南(nan)(nan)地(di)(di)(di)區(qu)栽培(pei)主要稻種。從測定(ding)的(de)(de)遺(yi)址形成時間看,當時云(yun)南(nan)(nan)剛(gang)剛(gang)跨進階級社(she)會的(de)(de)大門(men),而我(wo)國中(zhong)原地(di)(di)(di)區(qu)正處(chu)在殷商晚(wan)期(qi)。截止目(mu)前(qian)所知,海門(men)口遺(yi)址是(shi)(shi)云(yun)南(nan)(nan)銅(tong)(tong)石并(bing)用文化早(zao)發(fa)源地(di)(di)(di),標志著云(yun)南(nan)(nan)地(di)(di)(di)區(qu)利(li)用金(jin)(jin)屬(shu)的(de)(de)開始。