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Biostratigraphic Study of the Paleocene–Eocene Boundary in Northern Tunisia, North Africa
Author(s) -
ZILI Lamia
Publication year - 2013
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.12157
Subject(s) - biozone , microfauna , foraminifera , paleontology , geology , benthic zone , period (music) , global boundary stratotype section and point , biostratigraphy , bathyal zone , section (typography) , oceanography , biology , ecology , fauna , physics , advertising , acoustics , business
A new section at Jebel Gorraa, in northern Tunisia, contains the Paleocene–Eocene transition interval. Sample analysis of the section delivers abundant and diverse microfauna of planktonic and benthic foraminifera. Biostratigraphically, the Acarinina sibaiyaensis index‐species is identified for the first time in this region, which allows us to specify the location of the Paleocene–Eocene boundary as well as the first E1 biozone of the lower Eocene. Samples from this biozone contain calcitic tests poorly preserved with an enrichment of iron oxide signifying a period of upheaval in local marine environments linked to the global warming of the Paleocene–Eocene Thermal Maximum (PETM), the marker for the P/E boundary.