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在北京天安门广场西侧的人民大会堂门前的巨大立柱包裹着红色的石灰岩,如果你走近细看,就会发现其表面布满了层层叠加的细纹,这就是产于蓟县元古代地层中的叠层石。叠层石是地球上最原始的生命活动记录载体之一,最早期的叠层石起源可追溯到非洲南部的布拉瓦约白云岩(Bulawayo Dolomite),距今已有28亿年了。叠层石,顾名思义,就是大量的蓝菌
A large pillar in front of the Great Hall of the People at the west side of Beijing’s Tiananmen Square wraps red limestone. If you look closely, you will find that the surface is covered with layers of fine lines, which is produced in the Yuan and ancestors of Jixian Stratum in the laminated stone. Stratosphere is one of the most primitive life record carriers on earth. The earliest strata originated from Bulawayo Dolomite in southern Africa, dating back more than 2.8 billion years ago. Laminated stone, as the name suggests, is a large number of blue bacteria