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Dr. Sheila Nöth 《Facies》1998,38(1):165-173
Summary Scanning Electron Microscopy on conodonts from the Middle Triassic “Trochitenkalk” from Northwest Germany with CAI values
ranging from 1 to 5 revealed structural alterations during progressive diagenesis. Conodonts with low CAI values of 1.5 already
show syntaxial recrystallization of apatite on the conodont surface. Aggrading crystallization of the internal structure occurs
in conodonts with CAI=5. The usually short-prismatic and blocky syntaxial crystallites become increasingly longer and an overall
increase in crystallite size takes place. Conodonts from the telemagmatically heated sediments overlying the intrusive body
of the Vlotho Massiv are often corroded, i.e., they have pocked, frosted to pitted surfaces with dolomite rhomb overgrowths,
indicating contact with ascending dolomitizing brines. 相似文献
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