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Impact-induced and diagenetic changes in minerals in the sandy ejecta of the Kärdla crater,NW Estonia
impact craters ejecta shock metamorphism C-rich particles stable carbon isotopes
2009/10/22
The sand-rich ejecta containing a considerable amount of mineral grains with impact-induced features was studied in five boreholes drilled around the Kärdla impact meteorite structure. Quartz gra...
Diagenetic changes in Concholepas concholepas shells (Gastropoda,Muricidae) in the hyper-arid conditions of Northern Chile – implications for palaeoenvironmental reconstructions
Diagenetic changes Concholepas concholepas shells hyper-arid conditions
2010/1/19
Variations in the chemical composition of fossil biogenic carbonates, and in particular of mollusc shells, have been used in a range of palaeoenvironmental reconstructions. It is of primary importance...