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Eve of biomineralization: Controls on skeletal mineralogyстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 31 октября 2014 г.
- Авторы: Zhuravlev A.Yu, Wood R.A.
- Журнал: Geology
- Том: 36
- Номер: 12
- Год издания: 2008
- Издательство: Geological Society of America
- Местоположение издательства: United States
- Первая страница: 923
- Последняя страница: 926
- DOI: Carbonate mineralogies have oscillated between aragonite and calcite seas through geo- logical time, proposed to be due mainly to secular variation in the magnesium/calcium ratio driven by changing rates of ocean crust production. A quantitative compilati
- Аннотация: Carbonate mineralogies have oscillated between aragonite and calcite seas through geological time, proposed to be due mainly to secular variation in the magnesium/calcium ratio driven by changing rates of ocean crust production. A quantitative compilation of inorganic and biominerals from the onset of biomineralization (late Ediacaran–Middle Ordovician) reveals a correspondence between seawater chemistry and the first adopted mineralogy of skeletal clades. Ediacaran–Tommotian skeletons and inorganic precipitates were composed exclusively of aragonite or high-Mg calcite, but these were replaced by low-Mg calcite min- eralogies during the early Atdabanian, implying the onset of a calcite sea. This transition is empirically constrained by fluid inclusion data. Late Atbadanian–Botoman inorganic pre- cipitates returned to aragonite, with high-Mg calcite echinoderms and solitary tabulaconids and massive aragonitic tabulaconids originating during this interval. Middle Cambrian– Ordovician inorganic precipitates were low-Mg calcite, and the Ordovician radiation in skel- etal expression was due mostly to groups with low-Mg calcite mineralogies. These short-lived transitions can be most parsimoniously explained by minor oscillations of mMg:Ca around ~2 during this period, possibly combined with the progressive onset of greenhouse conditions during the mid-Late Cambrian.
- Добавил в систему: Журавлев Андрей Юрьевич
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Zhuravlev_Wood_2008_eve_of_biomineralization.pdf | Zhuravlev_Wood_2008_eve_of_biomineralization.pdf | 167,6 КБ | 24 октября 2014 [AYZhuravlev] |