Petruny MS Thesis TDP Site 23: Late/Upper Campanian, Tanzania
collected by Tanzania Drilling Project Expedition 2007

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Radotruncana calcarata
Globotruncanidae
Globotruncanita ventricosa
Globotruncanita elevata (Brotzen 1934)
Globotruncana ventricosa
Coccolithophyceae - Braarudosphaerales - Polycyclolithaceae
Uniplanarius trifidus (Stradner 1961)
Uniplanarius sissinghii Perch-Nielsen 1986
see common names

Geography
Country:Tanzania State/province:Lindi
Coordinates: 10.0° South, 39.7° East (view map)
Paleocoordinates:26.9° South, 31.0° East
Basis of coordinate:stated in text
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Campanian 10 m.y. bin:Cretaceous 7
Key time interval:Late/Upper Campanian
Age range of interval:83.60000 - 72.10000 m.y. ago
Stratigraphy
Geological group:Kilwa Formation:Nangurukuru
Lithology and environment
Primary lithology:bioturbation lithified muddy,calcareous siltstone
Secondary lithology: lithified silty sandstone
Lithology description: The principal lithologies from the surface to 64.10 m are pale blue to grayish blue-green, massive, calcareous claystones with relatively common small bioturbation mottling and bioclasts. The interval from 57.10 m to 64.10 m presents significant cementation as well as frequent layers (1–10 cm thick) of light gray, medium- to fine-grained, massive sandstones with sharp, irregular contacts (Fig. 5i). On the other hand, the bottom of the hole (64.10–90.70 m) consists of greenish gray and light bluish gray, weakly-bedded, massive siltstones–sandy siltstones, where mm- to cm-sized, bioturbation burrows are relatively abundant. These burrows are mostly elongate or oval and bedding-parallel, but simple sub-vertical burrows are also present. Small bioclasts are common in this interval.
Environment:offshore Tectonic setting:passive margin
Glacial or sequence phase:regressive
Taphonomy
Modes of preservation:body,original calcite,replaced with calcite
Size of fossils:microfossils
Abundance in sediment:common
Collection methods and comments
Collection methods:core,smear slide,field collection
Reason for describing collection:biostratigraphic analysis
Museum repositories:USNM
Collectors:Tanzania Drilling Project Expedition Collection dates:2007
Metadata
Database number:179879
Authorizer:M. Uhen Enterer:L. Petruny
Modifier:L. Petruny Research group:marine invertebrate,micropaleontology,taphonomy
Created:2016-07-03 17:22:58 Last modified:2016-07-03 18:03:36
Access level:the public Released:2016-07-03 17:22:58
Creative Commons license:CC BY
Reference information

Primary reference:
59255. Á J. Berrocoso, K. G. MacLeod, B. T. Huber, J. A. Lees, I. Wendler, P. R. Bown, A. K. Mweneinda, C. I. Londoño, and J. M. Singano. 2010. Lithostratigraphy, biostratigraphy and chemostratigraphy of Upper Cretaceous sediments from southern Tanzania: Tanzania drilling project sites 21-26. Journal of African Earth Sciences 57:47-69 [M. Uhen/L. Petruny]