Magneto-biostratigraphy and paleoenvironments of the Miocene freshwater sediments of the Sarajevo-Zenica Basin

K. Sant; N. Andrić; O. Mandic; V. Demir; D. Pavelić; Lj Rundić; H. Hrvatović; L. Matenco; W. Krijgsman

doi:10.1016/j.palaeo.2018.06.009

Magneto-biostratigraphy and paleoenvironments of the Miocene freshwater sediments of the Sarajevo-Zenica Basin

K. Sant^*, N. Andrić, O. Mandic, V. Demir, D. Pavelić, Lj Rundić, H. Hrvatović, L. Matenco, W. Krijgsman

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

The Sarajevo-Zenica Basin of Bosnia-Herzegovina was part of the Dinaride Lake System, a large network of Miocene long-lived freshwater basins in southeastern Europe. The basin contains a thick sedimentary succession of carbonates, coals and mixed siliciclastic deposits that reflects the paleoclimatic and tectonic evolution of the region. In this study, we present novel integrated (magneto-bio)stratigraphic and sedimentological data and reconstruct the paleoenvironmental evolution of the Sarajevo-Zenica Basin during its two main evolutionary phases (thrusting and extension). The basal “Oligo-Miocene” freshwater paleoenvironments are characterized by alternating palustrine, shallow lacustrine and distal fluvial phases. The base level fluctuations are largely controlled by syn-sedimentary pulses of tectonic loading during the final phase of thrusting in the Internal Dinarides. The majority of this succession is considered early Miocene in age, which contrasts with previous Oligocene age estimates. The subsequent extensional phase initiated not later than ~18.4 Ma. This coarsening upward sequence of lacustrine carbonates, silts, sands and conglomerates is correlated between 17.2 and 15 Ma (C5Cr-C5Br) by means of integrated bio-magnetostratigraphy. During this upper extensional phase, subsidence and sediment influx was generally controlled by activity along the basin bounding normal fault, overruling smaller scale climatic influences. We conclude that the existence of the long-lived Sarajevo lake is coeval with other Dinaric and southern Pannonian lakes, and overlaps in time with the Miocene Climatic Optimum. Sedimentation in the Sarajevo-Zenica basin terminated at ~15–14 Ma which concurs with both the end of the climatic optimum as well as the cessation of extension in the Dinarides. These results will help to better quantify the paleoclimatic changes in the Dinaride Lake System as well as the regional tectono-sedimentary events, such as potential migrations of deformation across the Dinarides.

Original language	English
Pages (from-to)	48-69
Number of pages	22
Journal	Palaeogeography, Palaeoclimatology, Palaeoecology
Volume	506
DOIs	https://doi.org/10.1016/j.palaeo.2018.06.009
Publication status	Published - 1 Oct 2018

Funding

Special thanks go to the helpful staff of the Bosnian Geological Society, in particular to Alojz Filipović and Ćazim Šarić for their warm support during the entire field campaign. Besides this, we are indebted to Jolien Ooms, Seán Morley and Haris Hodžić (Brown Coal Mine Kakanj) for their field assistance, and Roel van Elsas and Leonard Blik for lab support. Klaudia Kuiper is thanked for the cooperation in the 40 Ar/ 39 Ar laboratory. We are also grateful for advice by Cor Langereis concerning paleomagnetic statistics, and by Mark Dekkers on rock magnetic details. This research was financially supported through the Netherlands Geosciences Foundation (ALW) with funding from the Netherlands Organization for Scientific Research (NWO) by VICI grant 865.10.011 of WK. NA was financed by the Netherlands Research Centre for Integrated Solid Earth Science (ISES). In addition, the Ministry of Education and Science of the Republic of Serbia financially supported NA and LjR via project number OI176019 and OI176015 , respectively. We are grateful for the constructive feedback received from Miguel Garces and an anonymous reviewer. Appendix A

Keywords

Chronology
Dinarides
Lacustrine basin
Paleoclimate
Syn-sedimentary extension

Access to Document

10.1016/j.palaeo.2018.06.009

1-s2.0-S0031018218301445-mainFinal published version, 7.82 MBLicence: Taverne

Cite this

@article{205e24b14e31497cb3419182583814d5,

title = "Magneto-biostratigraphy and paleoenvironments of the Miocene freshwater sediments of the Sarajevo-Zenica Basin",

abstract = "The Sarajevo-Zenica Basin of Bosnia-Herzegovina was part of the Dinaride Lake System, a large network of Miocene long-lived freshwater basins in southeastern Europe. The basin contains a thick sedimentary succession of carbonates, coals and mixed siliciclastic deposits that reflects the paleoclimatic and tectonic evolution of the region. In this study, we present novel integrated (magneto-bio)stratigraphic and sedimentological data and reconstruct the paleoenvironmental evolution of the Sarajevo-Zenica Basin during its two main evolutionary phases (thrusting and extension). The basal “Oligo-Miocene” freshwater paleoenvironments are characterized by alternating palustrine, shallow lacustrine and distal fluvial phases. The base level fluctuations are largely controlled by syn-sedimentary pulses of tectonic loading during the final phase of thrusting in the Internal Dinarides. The majority of this succession is considered early Miocene in age, which contrasts with previous Oligocene age estimates. The subsequent extensional phase initiated not later than ~18.4 Ma. This coarsening upward sequence of lacustrine carbonates, silts, sands and conglomerates is correlated between 17.2 and 15 Ma (C5Cr-C5Br) by means of integrated bio-magnetostratigraphy. During this upper extensional phase, subsidence and sediment influx was generally controlled by activity along the basin bounding normal fault, overruling smaller scale climatic influences. We conclude that the existence of the long-lived Sarajevo lake is coeval with other Dinaric and southern Pannonian lakes, and overlaps in time with the Miocene Climatic Optimum. Sedimentation in the Sarajevo-Zenica basin terminated at ~15–14 Ma which concurs with both the end of the climatic optimum as well as the cessation of extension in the Dinarides. These results will help to better quantify the paleoclimatic changes in the Dinaride Lake System as well as the regional tectono-sedimentary events, such as potential migrations of deformation across the Dinarides.",

keywords = "Chronology, Dinarides, Lacustrine basin, Paleoclimate, Syn-sedimentary extension",

author = "K. Sant and N. Andri{\'c} and O. Mandic and V. Demir and D. Paveli{\'c} and Lj Rundi{\'c} and H. Hrvatovi{\'c} and L. Matenco and W. Krijgsman",

year = "2018",

month = oct,

day = "1",

doi = "10.1016/j.palaeo.2018.06.009",

language = "English",

volume = "506",

pages = "48--69",

journal = "Palaeogeography, Palaeoclimatology, Palaeoecology",

issn = "0031-0182",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Magneto-biostratigraphy and paleoenvironments of the Miocene freshwater sediments of the Sarajevo-Zenica Basin

AU - Sant, K.

AU - Andrić, N.

AU - Mandic, O.

AU - Demir, V.

AU - Pavelić, D.

AU - Rundić, Lj

AU - Hrvatović, H.

AU - Matenco, L.

AU - Krijgsman, W.

PY - 2018/10/1

Y1 - 2018/10/1

N2 - The Sarajevo-Zenica Basin of Bosnia-Herzegovina was part of the Dinaride Lake System, a large network of Miocene long-lived freshwater basins in southeastern Europe. The basin contains a thick sedimentary succession of carbonates, coals and mixed siliciclastic deposits that reflects the paleoclimatic and tectonic evolution of the region. In this study, we present novel integrated (magneto-bio)stratigraphic and sedimentological data and reconstruct the paleoenvironmental evolution of the Sarajevo-Zenica Basin during its two main evolutionary phases (thrusting and extension). The basal “Oligo-Miocene” freshwater paleoenvironments are characterized by alternating palustrine, shallow lacustrine and distal fluvial phases. The base level fluctuations are largely controlled by syn-sedimentary pulses of tectonic loading during the final phase of thrusting in the Internal Dinarides. The majority of this succession is considered early Miocene in age, which contrasts with previous Oligocene age estimates. The subsequent extensional phase initiated not later than ~18.4 Ma. This coarsening upward sequence of lacustrine carbonates, silts, sands and conglomerates is correlated between 17.2 and 15 Ma (C5Cr-C5Br) by means of integrated bio-magnetostratigraphy. During this upper extensional phase, subsidence and sediment influx was generally controlled by activity along the basin bounding normal fault, overruling smaller scale climatic influences. We conclude that the existence of the long-lived Sarajevo lake is coeval with other Dinaric and southern Pannonian lakes, and overlaps in time with the Miocene Climatic Optimum. Sedimentation in the Sarajevo-Zenica basin terminated at ~15–14 Ma which concurs with both the end of the climatic optimum as well as the cessation of extension in the Dinarides. These results will help to better quantify the paleoclimatic changes in the Dinaride Lake System as well as the regional tectono-sedimentary events, such as potential migrations of deformation across the Dinarides.

AB - The Sarajevo-Zenica Basin of Bosnia-Herzegovina was part of the Dinaride Lake System, a large network of Miocene long-lived freshwater basins in southeastern Europe. The basin contains a thick sedimentary succession of carbonates, coals and mixed siliciclastic deposits that reflects the paleoclimatic and tectonic evolution of the region. In this study, we present novel integrated (magneto-bio)stratigraphic and sedimentological data and reconstruct the paleoenvironmental evolution of the Sarajevo-Zenica Basin during its two main evolutionary phases (thrusting and extension). The basal “Oligo-Miocene” freshwater paleoenvironments are characterized by alternating palustrine, shallow lacustrine and distal fluvial phases. The base level fluctuations are largely controlled by syn-sedimentary pulses of tectonic loading during the final phase of thrusting in the Internal Dinarides. The majority of this succession is considered early Miocene in age, which contrasts with previous Oligocene age estimates. The subsequent extensional phase initiated not later than ~18.4 Ma. This coarsening upward sequence of lacustrine carbonates, silts, sands and conglomerates is correlated between 17.2 and 15 Ma (C5Cr-C5Br) by means of integrated bio-magnetostratigraphy. During this upper extensional phase, subsidence and sediment influx was generally controlled by activity along the basin bounding normal fault, overruling smaller scale climatic influences. We conclude that the existence of the long-lived Sarajevo lake is coeval with other Dinaric and southern Pannonian lakes, and overlaps in time with the Miocene Climatic Optimum. Sedimentation in the Sarajevo-Zenica basin terminated at ~15–14 Ma which concurs with both the end of the climatic optimum as well as the cessation of extension in the Dinarides. These results will help to better quantify the paleoclimatic changes in the Dinaride Lake System as well as the regional tectono-sedimentary events, such as potential migrations of deformation across the Dinarides.

KW - Chronology

KW - Dinarides

KW - Lacustrine basin

KW - Paleoclimate

KW - Syn-sedimentary extension

UR - http://www.scopus.com/inward/record.url?scp=85049555940&partnerID=8YFLogxK

U2 - 10.1016/j.palaeo.2018.06.009

DO - 10.1016/j.palaeo.2018.06.009

M3 - Article

AN - SCOPUS:85049555940

SN - 0031-0182

VL - 506

SP - 48

EP - 69

JO - Palaeogeography, Palaeoclimatology, Palaeoecology

JF - Palaeogeography, Palaeoclimatology, Palaeoecology

ER -

Magneto-biostratigraphy and paleoenvironments of the Miocene freshwater sediments of the Sarajevo-Zenica Basin

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this