Mid to late Holocene water level and inferred climate changes of Lake Salda (SW Anatolia/Turkey): evidence from high-resolution seismic and sediment-core records

Asen Sabuncu*, Kürşad Kadir Eriş, Gülsen Uçarkuş, Dursun Acar, Erdem Kırkan, Nurettin Yakupoğlu, Sena Akçer Ön, Nurgul Balcı

*Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: ???type-name???Makalebilirkişi

Özet

The sedimentary sequence in Lake Salda has been first documented in detail by analyses of high-resolution seismic profiles and sediment cores together with onshore outcrops along the present shoreline of the lake. Such a multi-proxy approach provides a strong record of changing lake levels and depositional conditions in Lake Salda during the mid to late Holocene. The accurate determination of water-level oscillation and climate conditions relies on the confident deduction from 14C-dated onshore outcrops and sediment cores, which provide calibration for the chronostratigraphic units within high-resolution seismic records. The existence of a dry climate period during the transition from the middle to late Holocene caused the lake level to decrease until 1690 cal years BP. This prominent climate deterioration induced coastal progradation in the lake as inferred from the deltaic sequences in the high-resolution seismic record and favored stromatolite formation, given its oligotrophic water condition. The resultant lowstand of lake level during the late Holocene timely coincided with the Roman Climatic Optimum when a prominent erosional truncation surface and channel incision were formed as observed from the seismic profiles. The late Holocene, during 1690–1050 cal years BP, is represented by a transgressive condition due to lake-level increase, giving rise to a retreat of the deltaic deposit further inland. The ongoing deepening of the lake by contributions of both climate and tectonic activity during the last 650 cal years BP produced Gilbert-type fan deltas along the shoreline and a transgressive sedimentary unit with typical onlapping architecture in the seismic reflection profiles.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)241-263
Sayfa sayısı23
DergiJournal of Paleolimnology
Hacim70
Basın numarası3
DOI'lar
Yayın durumuYayınlandı - Eki 2023

Bibliyografik not

Publisher Copyright:
© 2023, The Author(s), under exclusive licence to Springer Nature B.V.

Finansman

This study was part of Asen Sabuncu’ Ph.D. thesis and supported by the Higher Education Council of Turkey (YOK, 100/2000 Ph.D. Scholarship). We want to thank all fieldwork members who attended campaigns in 2014 and 2017. We are also thankful to Ayşe Kaşlılar (Uppsala University) and Emin Demirbağ (İstanbul Technical University) for assisting to developed seismogram scripts, IHS for their academic donations, undergraduate students for their help during the core analyses. We thank the reviewers for taking the time and effort necessary to review the manuscript. We sincerely appreciate all valuable comments and suggestions, which helped us to improve the quality of the manuscript This study was part of Asen Sabuncu’ Ph.D. thesis and supported by the Higher Education Council of Turkey (YOK, 100/2000 Ph.D. Scholarship). We want to thank all fieldwork members who attended campaigns in 2014 and 2017. We are also thankful to Ayşe Kaşlılar (Uppsala University) and Emin Demirbağ (İstanbul Technical University) for assisting to developed seismogram scripts, IHS for their academic donations, undergraduate students for their help during the core analyses. We thank the reviewers for taking the time and effort necessary to review the manuscript. We sincerely appreciate all valuable comments and suggestions, which helped us to improve the quality of the manuscript This study has been supported by the Scientific and Technological Research Council of Turkey (TÜBİTAK, Project Number: 113Y408), Istanbul Technical University Research Fund (ITU-BAP, Project Number: 41244).

FinansörlerFinansör numarası
Higher Education Council of Turkey
Türkiye Bilimsel ve Teknolojik Araştırma Kurumu113Y408
Uppsala Universitet
Istanbul Teknik Üniversitesi
Bilimsel Araştırma Projeleri Birimi, İstanbul Teknik Üniversitesi41244

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