A new definition of the Paleocene Shallow Benthic Zones (SBP) by means of larger foraminiferal biohorizons, and their calibration with calcareous nannofossil biostratigraphy

被引：15

作者：

Papazzoni, Cesare Andrea ^{[1
]}

Fornaciari, Beatrice ^{[1
]}

Giusberti, Luca ^{[2
]}

Simonato, Michela ^{[2
]}

Fornaciari, Eliana ^{[2
]}

机构：

[1] Univ Modena & Reggio Emilia, Dipartimento Sci Chim & Geolog, Via Campi 103, I-41125 Modena, Italy

[2] Univ Padua, Dipartimento Geosci, Via Gradenigo 6, I-35131 Padua, Italy

来源：

MICROPALEONTOLOGY | 2023年 / 69卷 / 4-5期

关键词：

Biostratigraphy; Paleocene; larger foraminifera; calcareous nannofossils; SBP Zones; CNP Zones; EOCENE THERMAL MAXIMUM; SOUTHERN ALPS; MIDDLE PALEOCENE; SECTION; BOUNDARY; BIOCHRONOLOGY; BASIN; CHRONOSTRATIGRAPHY; BIOZONATION; RECORD;

D O I：

10.47894/mpal.69.4.02

中图分类号：

Q91 [古生物学];

学科分类号：

0709 ; 070903 ;

摘要：

Three key Paleocene deep-sea sections cropping out in northern Italy contain intercalations of calciturbiditic, larger foraminifera-bearing beds derived from shallow water environments. The reconstructed Southern Alps record obtained by splicing the three sections allowed a direct correlation of the shallow benthic SB and calcareous nannofossils CN Zones, leading new data about the Shallow Benthic biozonation for the Danian-Thanetian interval and proposing four new SBP (Shallow Benthic Paleocene) Zones (SBP1-4). Such revision relies on an innovative biostratigraphic approach based on larger foraminiferal biohorizons instead of marker species according to the traditional approach used since the introduction of the SB Zones. Based on our study, the SBP1/SBP2 boundary turns out to be about 2 Ma after the K/Pg crisis, highlighting a quite fast recovery of the complexity among foraminifera.

引用

页码：363 / 400

页数：38

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