Details
| Original language | English |
|---|---|
| Pages (from-to) | 786-790 |
| Number of pages | 5 |
| Journal | GEOLOGY |
| Volume | 47 |
| Issue number | 8 |
| Early online date | 6 Jun 2019 |
| Publication status | Published - 1 Aug 2019 |
Abstract
In the aftermath of major Phanerozoic biocrises, diverse metazoan-dominated reef ecosystems were commonly replaced by microbial carbonate-producing communities. Apart from the loss of metazoan competitors, the factors causing pervasive microbial carbonate production in shallow-water platform settings are not completely understood. Amongst others, outstanding warm temperatures coupled with low-oxygen waters were proposed as possible triggers. This study focuses on late Aptian shallow marine carbonates deposited on the Apennine carbonate platform (ACP) in the central Tethys. By establishing an integrated high-resolution chemostratigraphic framework for two sections of the ACP, the coeval onset of pervasive bacinelloid growth is discovered, indicating a platform-wide shift from a metazoan- dominated ecosystem to microbial carbonate production. The initial phase of microbial proliferation coincides with the final stage of the so-called late Aptian "cold snap" and the subsequent temperature increase, which was paralleled by a significant sea-level rise. Our results contrast with observations from the early Aptian Oceanic Anoxic Event 1a, where a similar shift toward microbial "bacinelloid" carbonate production has been linked to exceptionally warm conditions and hypoxia.
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In: GEOLOGY, Vol. 47, No. 8, 01.08.2019, p. 786-790.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Platform-wide shift to microbial carbonate production during the late Aptian
AU - Schmitt, Katharina Elena
AU - Heimhofer, Ulrich
AU - Frijia, G.
AU - Huck, Stefan
N1 - Funding information: We thank Christiane Wenske (Leibniz University Hannover) for laboratory assistance, and FritzLukas Stoepke (Leibniz University Hannover) for thinsection preparation. Financial support from German Research Foundation (DFG) projects HU 2258/21 (Huck) and HE 4467/81 (Heimhofer) is gratefully acknowledged. Furthermore, we would like to thank K. Föllmi, H. Weissert, and two anonymous reviewers for their critical comments and constructive contributions. We thank Christiane Wenske (Leibniz University Hannover) for laboratory assistance, and Fritz-Lukas Stoepke (Leibniz University Hannover) for thin-section preparation. Financial support from German Research Foundation (DFG) projects HU 2258/2-1 (Huck) and HE 4467/8-1 (Heimhofer) is gratefully acknowledged. Furthermore, we would like to thank K. F?llmi, H. Weissert, and two anonymous reviewers for their critical comments and constructive contributions.
PY - 2019/8/1
Y1 - 2019/8/1
N2 - In the aftermath of major Phanerozoic biocrises, diverse metazoan-dominated reef ecosystems were commonly replaced by microbial carbonate-producing communities. Apart from the loss of metazoan competitors, the factors causing pervasive microbial carbonate production in shallow-water platform settings are not completely understood. Amongst others, outstanding warm temperatures coupled with low-oxygen waters were proposed as possible triggers. This study focuses on late Aptian shallow marine carbonates deposited on the Apennine carbonate platform (ACP) in the central Tethys. By establishing an integrated high-resolution chemostratigraphic framework for two sections of the ACP, the coeval onset of pervasive bacinelloid growth is discovered, indicating a platform-wide shift from a metazoan- dominated ecosystem to microbial carbonate production. The initial phase of microbial proliferation coincides with the final stage of the so-called late Aptian "cold snap" and the subsequent temperature increase, which was paralleled by a significant sea-level rise. Our results contrast with observations from the early Aptian Oceanic Anoxic Event 1a, where a similar shift toward microbial "bacinelloid" carbonate production has been linked to exceptionally warm conditions and hypoxia.
AB - In the aftermath of major Phanerozoic biocrises, diverse metazoan-dominated reef ecosystems were commonly replaced by microbial carbonate-producing communities. Apart from the loss of metazoan competitors, the factors causing pervasive microbial carbonate production in shallow-water platform settings are not completely understood. Amongst others, outstanding warm temperatures coupled with low-oxygen waters were proposed as possible triggers. This study focuses on late Aptian shallow marine carbonates deposited on the Apennine carbonate platform (ACP) in the central Tethys. By establishing an integrated high-resolution chemostratigraphic framework for two sections of the ACP, the coeval onset of pervasive bacinelloid growth is discovered, indicating a platform-wide shift from a metazoan- dominated ecosystem to microbial carbonate production. The initial phase of microbial proliferation coincides with the final stage of the so-called late Aptian "cold snap" and the subsequent temperature increase, which was paralleled by a significant sea-level rise. Our results contrast with observations from the early Aptian Oceanic Anoxic Event 1a, where a similar shift toward microbial "bacinelloid" carbonate production has been linked to exceptionally warm conditions and hypoxia.
UR - http://www.scopus.com/inward/record.url?scp=85070770351&partnerID=8YFLogxK
U2 - 10.1130/g46325.1
DO - 10.1130/g46325.1
M3 - Article
AN - SCOPUS:85070770351
VL - 47
SP - 786
EP - 790
JO - GEOLOGY
JF - GEOLOGY
SN - 0091-7613
IS - 8
ER -