Facies and fauna of the Pennsylvanian Buckhorn Asphalt Quarry deposit: a review and new data on an important Palaeozoic fossil Lagerstätte with aragonite preservation
Facies and fauna of the Pennsylvanian Buckhorn Asphalt Quarry deposit: a review and new data on an important Palaeozoic fossil Lagerstätte with aragonite preservation
复制标题
宾夕法尼亚州鹿角沥青采石场矿床的相和动物群:对具有文石保存的重要古生代化石矿床的回顾和新数据
DOI:
10.1007/s10347-009-0181-9
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发表时间:
2009
期刊:
影响因子:
1.8
通讯作者:
Yancey
中科院分区:
文献类型:
--
作者:
Nützel;Yancey
The Pennsylvanian Buckhorn Asphalt Quarry contains the best-preserved Palaeozoic mollusc fauna in the world. Early impregnation of mixed siliciclastic–carbonate rocks (mudstones, pack to grainstones, shell beds, and conglomerates) with hydrocarbons prevented aragonite destruction (“Impregnation FossilLagerstätte”). The exceptional preservation comprises shell microstructures, microornaments and early ontogenetic shells. Most gastropods had planktotrophic larval development indicating a high primary production although the remains of phytoplankton are very rare in this and other Late Palaeozoic deposits. Deposition occurred close to a shallow-water coastal area. Mass flow processes (density currents) triggered by storms were involved in the transport mechanisms of some units. Shells of benthic molluscs yield the most diverse known Palaeozoic microboring assemblage, indicating at least partly euphotic conditions. The invertebrate fauna comprises about 160 species and is dominated by molluscs, which is unusual for a Palaeozoic deposit, suggesting that aragonite dissolution produces a major bias in the fossil record. However, most mollusc genera in the Buckhorn deposit are also known from other Pennsylvanian occurrences as recrystallised shells. This shows that preservation bias via preferential aragonite dissolution may be overestimated.
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影响因子:
64.8
作者:
J. Wendt
通讯作者:
J. Wendt
DOI:
--
发表时间:
1994
期刊:
影响因子:
--
作者:
E. K. Yoo
通讯作者:
E. K. Yoo
影响因子:
56.9
作者:
F. G. Stehli
通讯作者:
F. G. Stehli
影响因子:
1.4
作者:
J. E. Sorauf;G. Webb
通讯作者:
G. Webb
DOI:
--
发表时间:
1987
期刊:
影响因子:
--
作者:
U. Brand
通讯作者:
U. Brand