Petruny MS Thesis TDP Site 24 (Cretaceous to of Tanzania)

Where: Lindi, Tanzania (10.0° S, 39.6° E: paleocoordinates 29.1° S, 29.3° E)

• coordinate stated in text

When: Lindi Formation (Kilwa Group), Early/Lower Turonian to Early/Lower Turonian (93.5 - 89.3 Ma)

Environment/lithology: offshore; lithified, bioturbated siltstone and lithified, silty sandstone

• The dominant lithologies from the surface to 62 m (core TDP24/26) are mm- to cm-thick, interbedded, dark gray siltstones and fine-grained sandstones. A few layers (cm-thick) of light brown, fine-grained sandstones occur in the top portion of the section (from the surface to 11 m). Bioturbation and bioclasts are rare through this interval. Well-lithified, sandy siltstones with common cross-cutting, sulfate–carbonate veins and fractures occur

•from 62 m to 65 m (core TDP24/27) (Fig. 8). From 65 m to the bottom of the hole, light gray, lithified, coarse-grained sandstones with woody debris and rip-up clasts are interbedded with greenish gray siltstones. The sandstone beds have sharp, irregular basal contacts, while small bioturbation mottling is only visible in the siltstone layers.

Size class: microfossils

Preservation: original calcite, replaced with calcite

Collected by Tanzania Drilling Project Expedition in 2007; reposited in the USNM

Collection methods: core, smear slide,

Primary reference: 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]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 179882: authorized by Mark Uhen, entered by Loren Petruny on 03.07.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Coccolithophyceae
 Braarudosphaerales - Polycyclolithaceae
Eprolithus moratus
Eprolithus moratus Stover 1966
 Eiffellithales - Chiastozygaceae
Staurolithites gausorhethium
 Prymnesiophycidae - Prymnesiophycidae
Lithraphidites acutus
Lithraphidites acutus Verbeek and Manivit 1977
 Stephanolithiales - Stephanolithiaceae
Corollithion kennedyi
 Arkhangelskiales - Arkhangelskiellaceae
Arkhangelskiella antecessor
 Podorhabdales - Cretarhabdaceae
Helenea chiastia
Helenea chiastia Worsley 1971
Foraminifera
 Globigerinoidea - Globorotaliidae
"Rotalipora cushmani" = Globorotalia cushmani
"Rotalipora cushmani" = Globorotalia cushmani Morrow 1934
 Globigerinaceae - Marginotruncanidae
Whiteinella archaeocretacea
  -
Planomalina buxtorfi
 Globigerinina - Hedbergellidae
Helvetoglobotruncana praehelvetica
 Globigerinina - Rotaliporidae
Rotalipora montsalvensis, Rotalipora ticinensis, Thalmanninella greenhornensis, Thalmanninella globotruncanoides