Biostratigraphic Interpretation of Lutut Beds, Kerek Formation, Based on Foraminifera Fossils
Lutut Beds are the sandstone beds exposed in the northwest margin of Kendeng Basin, which contain abundant metamorphic-quartz grains, frequent recycled sedimentary quartz, and reworked bioclasts. Lutut Beds are not shown on the regional geological map and are often neglected in determining the geolo...
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UIR PRESS
2023
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ftunivislamriau2:oai:ojs.pkp.sfu.ca:article/12462 2023-11-05T03:44:41+01:00 Biostratigraphic Interpretation of Lutut Beds, Kerek Formation, Based on Foraminifera Fossils Kurniasih, Anis Adha, Ikhwannur Dalimunthe, Hasnan Lutfi Setyawan, Reddy Khorniawan, Wahyu Budhi Qadaryati, Nurakhmi Jayanti, Anita Galih Ringga Wijaya, Fadyaz Pugu 2023-06-23 application/pdf https://journal.uir.ac.id/index.php/JGEET/article/view/12462 https://doi.org/10.25299/jgeet.2023.8.2.12462 eng eng UIR PRESS https://journal.uir.ac.id/index.php/JGEET/article/view/12462/5307 https://journal.uir.ac.id/index.php/JGEET/article/view/12462 doi:10.25299/jgeet.2023.8.2.12462 Copyright (c) 2023 Journal of Geoscience, Engineering, Environment, and Technology http://creativecommons.org/licenses/by-sa/4.0 Journal of Geoscience, Engineering, Environment, and Technology; Vol. 8 No. 2 (2023): JGEET Vol 08 No 02 : June (2023); 105 - 111 2541-5794 2503-216X foraminifera Lutut Beds reworked bioclasts Geology info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article 2023 ftunivislamriau2 https://doi.org/10.25299/jgeet.2023.8.2.12462 2023-10-10T19:11:31Z Lutut Beds are the sandstone beds exposed in the northwest margin of Kendeng Basin, which contain abundant metamorphic-quartz grains, frequent recycled sedimentary quartz, and reworked bioclasts. Lutut Beds are not shown on the regional geological map and are often neglected in determining the geological history of Kendeng Basin. However, they have significant roles because it was deposited on the basin edge, which may carry important keys. This study aims to discover the larger and smaller foraminifera fossils contained in the Lutut Beds. Outcrop samples were collected in Kali Lutut and its surrounding area, including Lutut Beds and its overlying layers. Larger foraminifera was identified within 3 of 11 thin sections, mostly of Order Rotaliida, which occur as reworked bioclasts. The smaller foraminifera was barely found in most samples except for the samples from the overlying layers of Lutut Beds. The study reveals that Lutut Beds were deposited during Early to Middle Miocene, marked by the occurrence of Miogypsina sp. and Miogypsinoides sp. and also contains reworked Eocene – Early Oligocene larger foraminifera such as Nummulites sp., Discocyclina sp., and Dictyoconus sp. Besides, the overlying layer of Lutut Beds is identified to be deposited in the Middle Miocene to Pliocene based on the occurence of smaller planktonic foraminifera, Sphaeroidinella subdehiscens. The bathymetric interpretation based on smaller benthic foraminifera showed that Lutut Beds were deposited in the upper-middle bathyal zone. We also believe that the larger benthic foraminifera fossils in Lutut Beds were transported along the slope from its original life position. Accordingly, it is considered as allochthonous fossils. Article in Journal/Newspaper Planktonic foraminifera e-Journal UIR (Journal Pers - Universitas Islam Riau) Journal of Geoscience, Engineering, Environment, and Technology 8 2 105 111 |
institution |
Open Polar |
collection |
e-Journal UIR (Journal Pers - Universitas Islam Riau) |
op_collection_id |
ftunivislamriau2 |
language |
English |
topic |
foraminifera Lutut Beds reworked bioclasts Geology |
spellingShingle |
foraminifera Lutut Beds reworked bioclasts Geology Kurniasih, Anis Adha, Ikhwannur Dalimunthe, Hasnan Lutfi Setyawan, Reddy Khorniawan, Wahyu Budhi Qadaryati, Nurakhmi Jayanti, Anita Galih Ringga Wijaya, Fadyaz Pugu Biostratigraphic Interpretation of Lutut Beds, Kerek Formation, Based on Foraminifera Fossils |
topic_facet |
foraminifera Lutut Beds reworked bioclasts Geology |
description |
Lutut Beds are the sandstone beds exposed in the northwest margin of Kendeng Basin, which contain abundant metamorphic-quartz grains, frequent recycled sedimentary quartz, and reworked bioclasts. Lutut Beds are not shown on the regional geological map and are often neglected in determining the geological history of Kendeng Basin. However, they have significant roles because it was deposited on the basin edge, which may carry important keys. This study aims to discover the larger and smaller foraminifera fossils contained in the Lutut Beds. Outcrop samples were collected in Kali Lutut and its surrounding area, including Lutut Beds and its overlying layers. Larger foraminifera was identified within 3 of 11 thin sections, mostly of Order Rotaliida, which occur as reworked bioclasts. The smaller foraminifera was barely found in most samples except for the samples from the overlying layers of Lutut Beds. The study reveals that Lutut Beds were deposited during Early to Middle Miocene, marked by the occurrence of Miogypsina sp. and Miogypsinoides sp. and also contains reworked Eocene – Early Oligocene larger foraminifera such as Nummulites sp., Discocyclina sp., and Dictyoconus sp. Besides, the overlying layer of Lutut Beds is identified to be deposited in the Middle Miocene to Pliocene based on the occurence of smaller planktonic foraminifera, Sphaeroidinella subdehiscens. The bathymetric interpretation based on smaller benthic foraminifera showed that Lutut Beds were deposited in the upper-middle bathyal zone. We also believe that the larger benthic foraminifera fossils in Lutut Beds were transported along the slope from its original life position. Accordingly, it is considered as allochthonous fossils. |
format |
Article in Journal/Newspaper |
author |
Kurniasih, Anis Adha, Ikhwannur Dalimunthe, Hasnan Lutfi Setyawan, Reddy Khorniawan, Wahyu Budhi Qadaryati, Nurakhmi Jayanti, Anita Galih Ringga Wijaya, Fadyaz Pugu |
author_facet |
Kurniasih, Anis Adha, Ikhwannur Dalimunthe, Hasnan Lutfi Setyawan, Reddy Khorniawan, Wahyu Budhi Qadaryati, Nurakhmi Jayanti, Anita Galih Ringga Wijaya, Fadyaz Pugu |
author_sort |
Kurniasih, Anis |
title |
Biostratigraphic Interpretation of Lutut Beds, Kerek Formation, Based on Foraminifera Fossils |
title_short |
Biostratigraphic Interpretation of Lutut Beds, Kerek Formation, Based on Foraminifera Fossils |
title_full |
Biostratigraphic Interpretation of Lutut Beds, Kerek Formation, Based on Foraminifera Fossils |
title_fullStr |
Biostratigraphic Interpretation of Lutut Beds, Kerek Formation, Based on Foraminifera Fossils |
title_full_unstemmed |
Biostratigraphic Interpretation of Lutut Beds, Kerek Formation, Based on Foraminifera Fossils |
title_sort |
biostratigraphic interpretation of lutut beds, kerek formation, based on foraminifera fossils |
publisher |
UIR PRESS |
publishDate |
2023 |
url |
https://journal.uir.ac.id/index.php/JGEET/article/view/12462 https://doi.org/10.25299/jgeet.2023.8.2.12462 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Journal of Geoscience, Engineering, Environment, and Technology; Vol. 8 No. 2 (2023): JGEET Vol 08 No 02 : June (2023); 105 - 111 2541-5794 2503-216X |
op_relation |
https://journal.uir.ac.id/index.php/JGEET/article/view/12462/5307 https://journal.uir.ac.id/index.php/JGEET/article/view/12462 doi:10.25299/jgeet.2023.8.2.12462 |
op_rights |
Copyright (c) 2023 Journal of Geoscience, Engineering, Environment, and Technology http://creativecommons.org/licenses/by-sa/4.0 |
op_doi |
https://doi.org/10.25299/jgeet.2023.8.2.12462 |
container_title |
Journal of Geoscience, Engineering, Environment, and Technology |
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8 |
container_issue |
2 |
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105 |
op_container_end_page |
111 |
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1781705241566117888 |