This rock contained chalcedonic cement before it underwent diagenesis, a process where low temperatures and low pressures alter the content of sediments before they finally lithify, or turn into rock.
在经历成岩作用之前,有燧石质的胶结成分。成岩作用过程中,低温抵压改变沉积物的成分,而后固结成岩。
This rock contained chalcedonic cement before it underwent diagenesis, a process where low temperatures and low pressures alter the content of sediments before they finally lithify, or turn into rock.
在经历成岩作用之前,有燧石质的胶结成分。成岩作用过程中,低温抵压改变沉积物的成分,而后固结成岩。
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