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CORALLINE ALGAE FROM THE MIOCENE MAHAKAM DELTA (EAST KALIMANTAN, SOUTHEAST ASIA)

2015; Society for Sedimentary Geology; Volume: 30; Issue: 1 Linguagem: Inglês

10.2110/palo.2013.055

1938-5323

Anja Rösler, V. PRETKOVI, Vibor Novak, Willem Renema, Juan C. Braga,

Geological Studies and Exploration

Research Article| January 01, 2015 CORALLINE ALGAE FROM THE MIOCENE MAHAKAM DELTA (EAST KALIMANTAN, SOUTHEAST ASIA) ANJA RÖSLER; ANJA RÖSLER 1 Departamento de Estratigrafía y Paleontología, Facultad de Ciencias, Campus Fuentenueva s.n., Universidad de Granada, 18002 Granada, Spain e-mail: roeslanja@gmail.com Search for other works by this author on: GSW Google Scholar VEDRANA PRETKOVIĆ; VEDRANA PRETKOVIĆ 1 Departamento de Estratigrafía y Paleontología, Facultad de Ciencias, Campus Fuentenueva s.n., Universidad de Granada, 18002 Granada, Spain Search for other works by this author on: GSW Google Scholar VIBOR NOVAK; VIBOR NOVAK 2 Naturalis Biodiversity Center, Department of Geology, P.O. Box 9517, 2300 RA Leiden, The Netherlands Search for other works by this author on: GSW Google Scholar WILLEM RENEMA; WILLEM RENEMA 2 Naturalis Biodiversity Center, Department of Geology, P.O. Box 9517, 2300 RA Leiden, The Netherlands Search for other works by this author on: GSW Google Scholar JUAN C. BRAGA JUAN C. BRAGA 1 Departamento de Estratigrafía y Paleontología, Facultad de Ciencias, Campus Fuentenueva s.n., Universidad de Granada, 18002 Granada, Spain Search for other works by this author on: GSW Google Scholar PALAIOS (2015) 30 (1): 83–93. https://doi.org/10.2110/palo.2013.055 Article history received: 10 Jun 2013 accepted: 27 Feb 2014 first online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation ANJA RÖSLER, VEDRANA PRETKOVIĆ, VIBOR NOVAK, WILLEM RENEMA, JUAN C. BRAGA; CORALLINE ALGAE FROM THE MIOCENE MAHAKAM DELTA (EAST KALIMANTAN, SOUTHEAST ASIA). PALAIOS 2015;; 30 (1): 83–93. doi: https://doi.org/10.2110/palo.2013.055 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyPALAIOS Search Advanced Search Abstract Miocene crustose coralline algae (CCA) from Southeast Asia are poorly known, although the Miocene is the epoch of the onset of the biodiversity hotspot in the region and CCA are crucial to understanding the evolutionary history of reef building. To fill this knowledge gap, CCA from early and middle Miocene reefs and related carbonates in the Kutai Basin in East Kalimantan (Borneo, Indonesia) have been studied. The Kutai Basin was dominated by siliciclastic sediments of the proto-Mahakam Delta. Locally, carbonate buildups occur lateral to, or within, the deltaic succession. CCA in the Kutai Basin occur in carbonate beds that were deposited in a low-energy shallow-water platform setting and in association with coral reefs, encrusting the corals or bioclasts. Two main CCA assemblages are recognized herein: (1) a shallow-water assemblage (S-assemblage), dominated by Neogoniolithon spp., thick crusts of Spongites spp., and Hydrolithon spp.; and (2) the D-assemblage, which consists mainly of thin crusts of Lithothamnion spp., Mesophyllum spp., and Sporolithon spp., and is interpreted to have developed in darker waters. Light reduction in reefs in the proto-Mahakam Delta is interpreted to reflect either increased water depth or higher turbidity resulting from higher siliciclastic input. Assemblages with intermediate composition (I-assemblages) also occur. Common CCA with large cell fusions and groups of heterocysts, typical features of modern reef CCA, in the S-assemblages in the middle Miocene of East Kalimantan reflect the initiation of the reef-building CCA flora in the Indo-Pacific region. The occurrence of this kind of CCA confirms the biogeographic differentiation of a tropical reef flora. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.