Details
| Original language | English |
|---|---|
| Pages (from-to) | 283-297 |
| Number of pages | 15 |
| Journal | Newsletters on stratigraphy |
| Volume | 57 |
| Issue number | 3 |
| Early online date | 5 Apr 2024 |
| Publication status | Published - 11 Jul 2024 |
Abstract
The Oxfordian is characterized by two pronounced ca. 2‰ positive carbon isotope excursions (CIE) within the Lower and Middle Oxfordian referred as the EOxE and the MOxE, respectively. The EOxE and MOxE have been recorded from various marine and terrestrial organic and inorganic substrates and represent “shorter-term” (<1 Myr) variations modulating the prolonged uppermost Callovian-Middle Oxfordian carbon isotope increasing values. These chemostratigraphic markers have been interpreted to reflect climate fluctuations, changes in marine carbonate production, and long-term sea-level rise. A new high-resolution inorganic δ13Ccarb record from bulk-carbonate, is obtained from a scientific borehole (Konrad 101 core) located in the Lower Saxony Basin (LSB) and allow the recognition of the MOxE. In its counterpart, the EOxE is missing from the record due to a stratigraphic hiatus in the core, which is potentially associated with the well-documented sea-level lowstand characterizing the Callovian/Oxfordian transition. The MOxE record is interpreted to reflect synchronous changes in the global marine dissolved inorganic carbon pool, probably in response of weakening of shelf current intensity along the northern Tethyan margin and a sea-level rise, so it is linked to regionally enhanced organic carbon burial or increased carbonate carbon accumulation. This is the first high-resolution bulk-carbonate record of the MOxE within shallow-marine carbonate Sub-Boreal Realm. Our dataset emphasizes the global significance of the Middle Oxfordian carbon-cycle disturbance and confirms its recognition as a chemostratigraphic reference marker.
Keywords
- Carbon stable isotope, Chemostratigraphy, Korallenoolith, MOxE, Upper Jurassic
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Geology
- Earth and Planetary Sciences(all)
- Stratigraphy
Sustainable Development Goals
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Newsletters on stratigraphy, Vol. 57, No. 3, 11.07.2024, p. 283-297.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - First high-resolution shallow-marine bulk-carbonate record of the Middle Oxfordian Event in the Sub-Boreal Realm, Lower Saxony Basin, Germany
AU - Zhang, Deyan
AU - Krencker, François Nicolas
AU - Huck, Stefan
AU - Ulke, Philipp
AU - Schramm, Michael
AU - Heimhofer, Ulrich
N1 - Publisher Copyright: © 2024 Gebrüder Borntraeger, Stuttgart, Germany.
PY - 2024/7/11
Y1 - 2024/7/11
N2 - The Oxfordian is characterized by two pronounced ca. 2‰ positive carbon isotope excursions (CIE) within the Lower and Middle Oxfordian referred as the EOxE and the MOxE, respectively. The EOxE and MOxE have been recorded from various marine and terrestrial organic and inorganic substrates and represent “shorter-term” (<1 Myr) variations modulating the prolonged uppermost Callovian-Middle Oxfordian carbon isotope increasing values. These chemostratigraphic markers have been interpreted to reflect climate fluctuations, changes in marine carbonate production, and long-term sea-level rise. A new high-resolution inorganic δ13Ccarb record from bulk-carbonate, is obtained from a scientific borehole (Konrad 101 core) located in the Lower Saxony Basin (LSB) and allow the recognition of the MOxE. In its counterpart, the EOxE is missing from the record due to a stratigraphic hiatus in the core, which is potentially associated with the well-documented sea-level lowstand characterizing the Callovian/Oxfordian transition. The MOxE record is interpreted to reflect synchronous changes in the global marine dissolved inorganic carbon pool, probably in response of weakening of shelf current intensity along the northern Tethyan margin and a sea-level rise, so it is linked to regionally enhanced organic carbon burial or increased carbonate carbon accumulation. This is the first high-resolution bulk-carbonate record of the MOxE within shallow-marine carbonate Sub-Boreal Realm. Our dataset emphasizes the global significance of the Middle Oxfordian carbon-cycle disturbance and confirms its recognition as a chemostratigraphic reference marker.
AB - The Oxfordian is characterized by two pronounced ca. 2‰ positive carbon isotope excursions (CIE) within the Lower and Middle Oxfordian referred as the EOxE and the MOxE, respectively. The EOxE and MOxE have been recorded from various marine and terrestrial organic and inorganic substrates and represent “shorter-term” (<1 Myr) variations modulating the prolonged uppermost Callovian-Middle Oxfordian carbon isotope increasing values. These chemostratigraphic markers have been interpreted to reflect climate fluctuations, changes in marine carbonate production, and long-term sea-level rise. A new high-resolution inorganic δ13Ccarb record from bulk-carbonate, is obtained from a scientific borehole (Konrad 101 core) located in the Lower Saxony Basin (LSB) and allow the recognition of the MOxE. In its counterpart, the EOxE is missing from the record due to a stratigraphic hiatus in the core, which is potentially associated with the well-documented sea-level lowstand characterizing the Callovian/Oxfordian transition. The MOxE record is interpreted to reflect synchronous changes in the global marine dissolved inorganic carbon pool, probably in response of weakening of shelf current intensity along the northern Tethyan margin and a sea-level rise, so it is linked to regionally enhanced organic carbon burial or increased carbonate carbon accumulation. This is the first high-resolution bulk-carbonate record of the MOxE within shallow-marine carbonate Sub-Boreal Realm. Our dataset emphasizes the global significance of the Middle Oxfordian carbon-cycle disturbance and confirms its recognition as a chemostratigraphic reference marker.
KW - Carbon stable isotope
KW - Chemostratigraphy
KW - Korallenoolith
KW - MOxE
KW - Upper Jurassic
UR - http://www.scopus.com/inward/record.url?scp=85201285024&partnerID=8YFLogxK
U2 - 10.1127/nos/2024/0807
DO - 10.1127/nos/2024/0807
M3 - Article
AN - SCOPUS:85201285024
VL - 57
SP - 283
EP - 297
JO - Newsletters on stratigraphy
JF - Newsletters on stratigraphy
SN - 0078-0421
IS - 3
ER -