Petruny MS Thesis TDP Site 32 (Cretaceous of Tanzania)

Where: Lindi, Tanzania (10.0° S, 39.7° E: paleocoordinates 26.9° S, 31.0° E)

• coordinate stated in text

When: R. calcarata foram zone, Nangurukuru Formation (Kilwa Group), Late/Upper Campanian (83.5 - 70.6 Ma)

• formation-level stratigraphic resolution

Environment/lithology: offshore; lithified, silty claystone and lithified grainstone

• Lithologies from the surface to 14 m consist of pale yellowish orange, well-lithified, massive grainstones (Fig. 10), which are similar to those recovered in the upper 9.27 m of TDP Site 28 (Figs. 4 and 5a). Core TDP32/6 shows massive, silty claystones, mixed withdrill-mud and fragments of the overlying grainstones, possibly derived from hole caving. Together, this upper section might represent part of a large slump system off the west side of Kitulo Hill

•(Pearson et al., 2004). All underlying sediments (cores TDP32/7–23) form a monotonous sequence of slightly-laminated, olive gray claystones and greenish gray, silty claystones (Figs. 5c and 10), with sulfate–carbonate vein fractures limited to cores TDP32/7– 10. Occasional inoceramid debris is present, but no bioturbation is visible.

Size class: microfossils

Preservation: original calcite, replaced with calcite

Collected by Tanzania Drilling Project Expedition in 2008; reposited in the UNSM

Collection methods: bulk, core, smear slide,

Primary reference: À J. Berrocoso, B. T. Huber, K. G. MacLeod, M. R. Petrizzo, J. A. Lees, I. Wendler, H. Coxall, A. K. Mweneinda, F. Falzoni, H. Birch, J. M. Singano, S. Haynes, L. Cotton, J. Wendler, P. R. Bown, S. A. Robinson, and J. Gould. 2012. Lithostratigraphy, biostratigraphy and chemostratigraphy of Upper Cretaceous and Paleogene sediments from southern Tanzania: Tanzania Drilling Project Sites 27-35. Journal of African Earth Sciences 70:36-57 [M. Uhen/L. Petruny]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 179315: authorized by Mark Uhen, entered by Loren Petruny on 11.06.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

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Foraminifera
  -
Radotruncana calcarata
Coccolithophyceae
 Eiffellithales - Eiffellithaceae
Eiffellithus paralellus, Eiffellithus eximius
Eiffellithus eximius Stover 1966