scholarly journals Petrography of Evaporite Facies from the Ipubi Member, Santana Formation (Araripe Basin)

2018 ◽  
Vol 41 (2) ◽  
pp. 606-613
Author(s):  
G. DUARTE ◽  
L. BORGHI
Keyword(s):  
Santana Formation

Exceptional preservation in calcareous nodules

1985 ◽  
Vol 311 (1148) ◽  
pp. 67-73 ◽  
Keyword(s):  
Lower Triassic ◽  
Environmental Indicators ◽  
Carnic Alps ◽  
Upper Cambrian ◽  
Exceptional Preservation ◽  
Alum Shale ◽  
Shale Formation ◽  
The Common ◽  
Santana Formation ◽  
Barstow Formation

Preservation of soft integument in calcareous nodules seems to be more widespread geographically and stratigraphically than hitherto realized. It cannot be recognized in the field, and to recover such material requires special etching techniques. Such preservation can be of exceptional quality, with fossils preserved three dimensionally either by secondary phosphatization or by silicification. Coating as well as the replacement of integument has been observed even within the same sample. Methodical search for such preservation may be based on the common denominators of depositional, geochemical, and environmental indicators in previously described occurrences. As such exceptionally preserved material may be rare within the samples, large quantities of rock have to be prepared. The examples described here are from anthraconitic limestones (Orsten) of the Upper Cambrian Alum Shale Formation in Sweden. They are now known from many localities and from different trilobite zones. In addition nodules from the Lower Cretaceous Santana Formation in Brazil, the Upper Devonian cephalopod limestone in the Carnic Alps, the Lower Triassic of Spitzbergen and the Miocene Barstow Formation in California have all yielded extremely fine material.

A new crested maniraptoran dinosaur from the Santana Formation (Lower Cretaceous) of Brazil

1996 ◽  
Vol 153 (1) ◽  
pp. 5-8 ◽  
Author(s):  
D. M. MARTILL ◽  
A. R. I. CRUICKSHANK ◽  
E. FREY ◽  
P. G. SMALL ◽  
M. CLARKE
Keyword(s):  
Lower Cretaceous ◽  
Santana Formation

scholarly journals Isotope and elemental geochemistry of black shale‐hosted fossiliferous concretions from the Cretaceous Santana Formation fossil Lagerstätte (Brazil)

Sedimentology ◽  
2016 ◽  
Vol 64 (1) ◽  
pp. 150-167 ◽  
Author(s):  
Ulrich Heimhofer ◽  
Patrick Meister ◽  
Stefano M. Bernasconi ◽  
Daniel Ariztegui ◽  
David M. Martill ◽  
...  
Keyword(s):  
Black Shale ◽  
Elemental Geochemistry ◽  
Santana Formation
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