Last glacial climate oscillations and sudden environmental changes investigated in stalagmites from southwest Sulawesi, western Pacific
We investigated two stalagmites from the Saripa Cave and Bumi Cave in southern Sulawesi, Indonesia, using high-precision U-series dating and high-resolution trace element and C-O-Sr isotope analysis. The growth record (from 10.4 +/- 0.1 ka to 77.4 +/- 0.9 ka) of the Saripa Cave stalagmite (SR04-ST3)...
Published in: | TURKISH JOURNAL OF EARTH SCIENCES |
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Scientific and Technical Research Council of Turkey - TUBITAK
2020
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ftunivqespace:oai:espace.library.uq.edu.au:UQ:6e0b481 2023-05-15T16:30:13+02:00 Last glacial climate oscillations and sudden environmental changes investigated in stalagmites from southwest Sulawesi, western Pacific Unal Imer, Ezgi Uysal, Ibrahim Tonguc St Pierre, Emma Zhao, Jian-Xin Shulmeister, James 2020-01-01 https://espace.library.uq.edu.au/view/UQ:6e0b481 eng eng Scientific and Technical Research Council of Turkey - TUBITAK doi:10.3906/yer-1905-20 issn:1300-0985 issn:1303-619X orcid:0000-0002-2413-6178 orcid:0000-0001-5863-9462 DP0663274 DP077308 Not set Trace-Element Holocene Speleothems Isotopic Composition Millennial-Scale Late Pleistocene Drip Water Warm Pool Cave Monsoon Record 1900 Earth and Planetary Sciences Journal Article 2020 ftunivqespace https://doi.org/10.3906/yer-1905-20 2020-12-08T07:52:18Z We investigated two stalagmites from the Saripa Cave and Bumi Cave in southern Sulawesi, Indonesia, using high-precision U-series dating and high-resolution trace element and C-O-Sr isotope analysis. The growth record (from 10.4 +/- 0.1 ka to 77.4 +/- 0.9 ka) of the Saripa Cave stalagmite (SR04-ST3) is fragmented with two major (at the top: 10.4-11.6 ka and middle: 43.8-44.7 ka sections of the stalagmite) and some short (middle and bottom sections) growth phases, interrupted by long-lasting growth hiatuses. Both the timing of the growth phases and the delta O-18 values for different growth phases are correlated with those of cold/dry (similar to 22 ka and 43.8-44.7 ka) and wet/warm periods (e.g., Greenland Interstadials 12, 14, and 21) in the northern hemisphere speleothem records, displaying both anti-phase and in-phase relationships with the northern hemisphere records. This observation is unique in the Western Pacific tropical region, mostly likely because the Saripa Cave is located within the region of the latitudinally migrating Intertropical Convergence Zone (ITCZ), whereby the rainfall seasons may have changed through time depending on the mean latitude of the ITCZ. The Saripa Cave stalagmite contains textural laminae, which are here interpreted as a record of rapid environmental changes, possibly caused by volcanic eruptions at around 22.55 ka and 44.73 ka BP. The Bumi Cave record (stalagmite BC-09-3-C), on the other hand, presents very little variation in stable isotope and trace element compositions between 26.8 ka and 18.5 ka and does not seem to be influenced by any possible volcanic activity. More detailed future studies investigating millimeter- to submillimeter-scale geochemical time-series constrained by accurate ages in speleothems can be useful in unfolding the effects of eruptions and provide parallel records of climate and sudden environmental changes. Article in Journal/Newspaper Greenland The University of Queensland: UQ eSpace Greenland Pacific TURKISH JOURNAL OF EARTH SCIENCES 29 2 221 241 |
institution |
Open Polar |
collection |
The University of Queensland: UQ eSpace |
op_collection_id |
ftunivqespace |
language |
English |
topic |
Trace-Element Holocene Speleothems Isotopic Composition Millennial-Scale Late Pleistocene Drip Water Warm Pool Cave Monsoon Record 1900 Earth and Planetary Sciences |
spellingShingle |
Trace-Element Holocene Speleothems Isotopic Composition Millennial-Scale Late Pleistocene Drip Water Warm Pool Cave Monsoon Record 1900 Earth and Planetary Sciences Unal Imer, Ezgi Uysal, Ibrahim Tonguc St Pierre, Emma Zhao, Jian-Xin Shulmeister, James Last glacial climate oscillations and sudden environmental changes investigated in stalagmites from southwest Sulawesi, western Pacific |
topic_facet |
Trace-Element Holocene Speleothems Isotopic Composition Millennial-Scale Late Pleistocene Drip Water Warm Pool Cave Monsoon Record 1900 Earth and Planetary Sciences |
description |
We investigated two stalagmites from the Saripa Cave and Bumi Cave in southern Sulawesi, Indonesia, using high-precision U-series dating and high-resolution trace element and C-O-Sr isotope analysis. The growth record (from 10.4 +/- 0.1 ka to 77.4 +/- 0.9 ka) of the Saripa Cave stalagmite (SR04-ST3) is fragmented with two major (at the top: 10.4-11.6 ka and middle: 43.8-44.7 ka sections of the stalagmite) and some short (middle and bottom sections) growth phases, interrupted by long-lasting growth hiatuses. Both the timing of the growth phases and the delta O-18 values for different growth phases are correlated with those of cold/dry (similar to 22 ka and 43.8-44.7 ka) and wet/warm periods (e.g., Greenland Interstadials 12, 14, and 21) in the northern hemisphere speleothem records, displaying both anti-phase and in-phase relationships with the northern hemisphere records. This observation is unique in the Western Pacific tropical region, mostly likely because the Saripa Cave is located within the region of the latitudinally migrating Intertropical Convergence Zone (ITCZ), whereby the rainfall seasons may have changed through time depending on the mean latitude of the ITCZ. The Saripa Cave stalagmite contains textural laminae, which are here interpreted as a record of rapid environmental changes, possibly caused by volcanic eruptions at around 22.55 ka and 44.73 ka BP. The Bumi Cave record (stalagmite BC-09-3-C), on the other hand, presents very little variation in stable isotope and trace element compositions between 26.8 ka and 18.5 ka and does not seem to be influenced by any possible volcanic activity. More detailed future studies investigating millimeter- to submillimeter-scale geochemical time-series constrained by accurate ages in speleothems can be useful in unfolding the effects of eruptions and provide parallel records of climate and sudden environmental changes. |
format |
Article in Journal/Newspaper |
author |
Unal Imer, Ezgi Uysal, Ibrahim Tonguc St Pierre, Emma Zhao, Jian-Xin Shulmeister, James |
author_facet |
Unal Imer, Ezgi Uysal, Ibrahim Tonguc St Pierre, Emma Zhao, Jian-Xin Shulmeister, James |
author_sort |
Unal Imer, Ezgi |
title |
Last glacial climate oscillations and sudden environmental changes investigated in stalagmites from southwest Sulawesi, western Pacific |
title_short |
Last glacial climate oscillations and sudden environmental changes investigated in stalagmites from southwest Sulawesi, western Pacific |
title_full |
Last glacial climate oscillations and sudden environmental changes investigated in stalagmites from southwest Sulawesi, western Pacific |
title_fullStr |
Last glacial climate oscillations and sudden environmental changes investigated in stalagmites from southwest Sulawesi, western Pacific |
title_full_unstemmed |
Last glacial climate oscillations and sudden environmental changes investigated in stalagmites from southwest Sulawesi, western Pacific |
title_sort |
last glacial climate oscillations and sudden environmental changes investigated in stalagmites from southwest sulawesi, western pacific |
publisher |
Scientific and Technical Research Council of Turkey - TUBITAK |
publishDate |
2020 |
url |
https://espace.library.uq.edu.au/view/UQ:6e0b481 |
geographic |
Greenland Pacific |
geographic_facet |
Greenland Pacific |
genre |
Greenland |
genre_facet |
Greenland |
op_relation |
doi:10.3906/yer-1905-20 issn:1300-0985 issn:1303-619X orcid:0000-0002-2413-6178 orcid:0000-0001-5863-9462 DP0663274 DP077308 Not set |
op_doi |
https://doi.org/10.3906/yer-1905-20 |
container_title |
TURKISH JOURNAL OF EARTH SCIENCES |
container_volume |
29 |
container_issue |
2 |
container_start_page |
221 |
op_container_end_page |
241 |
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1766019941194006528 |