Dec
I-Bluestone wuhlobo oluthile lwetshe lesanti elinezingqimba ezilinganayo elingahlukaniswa libe ama-slabs amancane, abushelelezi. Igama elithi “bluestone” laqanjwa emuva maphakathi nawo-1800s lapho iningi lamatshe libonakala liluhlaza okwesibhakabhaka. or eluhlaza okwesibhakabhaka-mpunga. Ngaphandle kwegama, i-bluestone ingabuye itholakale ezinhlobonhlobo zemibala ehlanganisa ama-shades aluhlaza, onsundu, onsomi, ompunga othuli, opinki, noma obomvu. I-New York futhi Pennsylvania ukuphela kwemithombo ye-bluestone ekhiqizwe ngokwentengiso ku I-united states. Ihlala isikhathi eside, igcina umbala wayo, futhi imelana nokuqhekeka ngaphansi kwezinguquko zomoya, njengokuguquguquka kwezinga lokushisa nokucindezela. Izimayini ze-Bluestone eNew York State zaqala e-Ulster County maphakathi nekhulu le-19 futhi selokhu zembiwa ukuze zisetshenziswe emigwaqweni yezinyawo, emigwaqweni yokwakha, ezitebhisini, nakwezinye izinhlelo zokusebenza zokwakha.
I-bluestone yaseNew York yafakwa phakathi nesikhathi lapho ulwandle lwasendulo lumboza iningi leNew York yanamuhla. Imifudlana ithutha izinhlamvu ezilingana nesihlabathi ezakha itshe futhi yazibeka endaweni engashoni yolwandle/i-deltaic, eyaziwa ngokuthi i-Catskill Delta. Nakuba i-bluestone yakhiwa kule ndawo yasolwandle ephansi, engashoni, ingxenye enkulu yetshe yavela ekugugulekeni kwezintaba ezaziyizintaba zase-Acadian, ezazisendaweni manje osekuyizintaba zezintaba zaseNyakatho-mpumalanga.
Ukuhlola i-bluestone kunzima kakhulu kunezinhlobo eziningi zamatshe lapho izimbobo ezimbalwa ezibekwe kahle zizoveza ulwazi oluwusizo. Idiphozithi yekhwalithi ephezulu ye-bluestone ivamise ukuba nomkhawulo ngokwezinga futhi ayiqhubeki ngokwemvelo, ngakho akuhlali kubiza ukusebenzisa izimbobo eziyinhloko ukuze uthole amadiphozithi amasha.